1
|
Westhoff M, Del Villar SG, Voelker TL, Thai PN, Spooner HC, Costa AD, Sirish P, Chiamvimonvat N, Dickson EJ, Dixon RE. BIN1 knockdown rescues systolic dysfunction in aging male mouse hearts. Nat Commun 2024; 15:3528. [PMID: 38664444 PMCID: PMC11045846 DOI: 10.1038/s41467-024-47847-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/02/2023] [Accepted: 04/15/2024] [Indexed: 04/28/2024] Open
Abstract
Cardiac dysfunction is a hallmark of aging in humans and mice. Here we report that a two-week treatment to restore youthful Bridging Integrator 1 (BIN1) levels in the hearts of 24-month-old mice rejuvenates cardiac function and substantially reverses the aging phenotype. Our data indicate that age-associated overexpression of BIN1 occurs alongside dysregulated endosomal recycling and disrupted trafficking of cardiac CaV1.2 and type 2 ryanodine receptors. These deficiencies affect channel function at rest and their upregulation during acute stress. In vivo echocardiography reveals reduced systolic function in old mice. BIN1 knockdown using an adeno-associated virus serotype 9 packaged shRNA-mBIN1 restores the nanoscale distribution and clustering plasticity of ryanodine receptors and recovers Ca2+ transient amplitudes and cardiac systolic function toward youthful levels. Enhanced systolic function correlates with increased phosphorylation of the myofilament protein cardiac myosin binding protein-C. These results reveal BIN1 knockdown as a novel therapeutic strategy to rejuvenate the aging myocardium.
Collapse
Affiliation(s)
- Maartje Westhoff
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Silvia G Del Villar
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Taylor L Voelker
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Phung N Thai
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
| | - Heather C Spooner
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Alexandre D Costa
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Padmini Sirish
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
| | - Nipavan Chiamvimonvat
- Division of Cardiovascular Medicine, Department of Internal Medicine, University of California, Davis, Davis, CA, USA
- Department of Veterans Affairs, Northern California Health Care System, Mather, CA, USA
- Department of Pharmacology, University of California Davis, Davis, CA, USA
| | - Eamonn J Dickson
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA
| | - Rose E Dixon
- Department of Physiology and Membrane Biology, University of California Davis, Davis, CA, USA.
| |
Collapse
|
2
|
Ledl C, Frank U, Dziewas R, Arnold B, Bähre N, Betz CS, Braune S, Deitmer T, Diesener P, Fischer AS, Hamzic S, Iberl G, Konradi J, Löhler J, Platz T, Rohlfes C, Westhoff M, Winkler S, Wirth R, Graf S. [Curriculum "Tracheostomy management in dysphagia therapy"]. HNO 2024:10.1007/s00106-024-01454-7. [PMID: 38578463 DOI: 10.1007/s00106-024-01454-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 04/06/2024]
Abstract
The number of tracheotomized patients with dysphagia and their need for treatment are continuously increasing in clinical and community settings. The revised version of the directive on home care and community-based intensive care of the Federal Joint Committee (G-BA) requires that tracheotomized patients are regularly evaluated with the aim of identifying and promoting the therapeutic potential after hospital discharge. Dysphagia treatment plays a crucial role as without improvement of severe dysphagia there is practically no possibility for decannulation. Tracheotomized patients with dysphagia are treated by speech and language therapists (SLT); however, the contents of tracheostomy management (TM) are not obligatory in the speech and language therapeutic training curricula, so that there is a need for further education and treatment standards must be secured. Therefore, the German Interdisciplinary Society for Dysphagia (DGD) in cooperation with the participating German medical and therapeutic societies developed a postgraduate curriculum for TM. This should serve as the basis for contents in TM and qualification of therapists within the framework of the delegation of medical services. The goals of the TM curriculum are the definition of theoretical and practical contents of TM, the qualification to perform TM according to current standards of care and quality assurance. The curriculum defines two qualification levels (user and trainer), entry requirements, curricular contents, examination and qualification criteria as well as transitional regulations for SLTs already experienced in TM.
Collapse
Affiliation(s)
- C Ledl
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland.
- Schön Klinik Bad Aibling, Bad Aibling, Deutschland.
| | - U Frank
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Swallowing Research Lab, Universität Potsdam, Potsdam, Deutschland
| | - R Dziewas
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Deutsche Gesellschaft für Neurologie, Berlin, Deutschland
- Deutsche Gesellschaft für NeuroIntensiv- und Notfallmedizin, Jena, Deutschland
- Klinik für Neurologie und neurologische Frührehabilitation, Klinikum Osnabrück, Osnabrück, Deutschland
| | - B Arnold
- Deutscher Berufsverband für Phoniatrie und Pädaudiologie, Berlin, Deutschland
| | - N Bähre
- Deutsche Interdisziplinäre Gesellschaft für Außerklinische Beatmung, Freiburg, Deutschland
| | - C S Betz
- Deutsche Gesellschaft für Hals-Nasen-Ohren Heilkunde, Kopf- und Hals-Chirurgie, Bonn, Deutschland
- Klinik und Poliklinik für HNO-Heilkunde, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Deutschland
| | - S Braune
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- St. Franziskus-Hospital Münster, Münster, Deutschland
| | - T Deitmer
- Deutsche Gesellschaft für Hals-Nasen-Ohren Heilkunde, Kopf- und Hals-Chirurgie, Bonn, Deutschland
| | - P Diesener
- Deutsche Interdisziplinäre Gesellschaft für Außerklinische Beatmung, Freiburg, Deutschland
- Dysphagie-Netzwerk-Südwest e. V., Überlingen, Deutschland
- Dysphagie- und Kanülensprechstunde Hegau-Jugendwerk Gailingen, Gailingen, Deutschland
- Rehaklinik Zihlschlacht, Zihlschlacht-Sitterdorf, Schweiz
| | - A S Fischer
- Juristische Fakultät, Forschungsstelle Medizinrecht, Ludwig-Maximilians-Universität, München, Deutschland
| | - S Hamzic
- Deutscher Bundesverband für akademische Sprachtherapie und Logopädie, Moers, Deutschland
- Universitätsklinikum Gießen und Marburg, Campus Gießen, Neurologische Klinik, Justus-Liebig-Universität, Gießen, Deutschland
| | - G Iberl
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
| | - J Konradi
- Deutscher Bundesverband für akademische Sprachtherapie und Logopädie, Moers, Deutschland
- Institut für Physikalische Therapie, Prävention und Rehabilitation, Universitätsmedizin der Johannes-Gutenberg-Universität Mainz, Mainz, Deutschland
| | - J Löhler
- Deutscher Berufsverband der HNO-Ärzte, Neumünster, Deutschland
| | - T Platz
- Deutsche Gesellschaft für Neurorehabilitation, Berlin, Deutschland
- Institut für Neurorehabilitation und Evidenzbasierung, An-Institut der Universität Greifswald, BDH-Klinik Greifswald, Greifswald, Deutschland
- AG Neurorehabilitation, Universitätsmedizin Greifswald, Greifswald, Deutschland
| | - C Rohlfes
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- BDH-Klinik Hessisch Oldendorf, Hessisch Oldendorf, Deutschland
| | - M Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- Zentrum für Pneumologie und Thoraxchirurgie, Lungenklinik Hemer, Hemer, Deutschland
| | - S Winkler
- Deutscher Bundesverband für Logopädie, Frechen, Deutschland
| | - R Wirth
- Deutsche Gesellschaft für Geriatrie, Berlin, Deutschland
- Klinik für Altersmedizin, Marien Hospital Herne, Universitätsklinikum der Ruhr-Universität Bochum, Bochum, Deutschland
| | - S Graf
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Deutsche Gesellschaft für Phoniatrie und Pädaudiologie, Göttingen, Deutschland
- Universitätsklinik für Hör‑, Stimm- und Sprachstörungen, Medizinische Universität Innsbruck, Innsbruck, Österreich
| |
Collapse
|
3
|
Ledl C, Frank U, Dziewas R, Arnold B, Bähre N, Betz CS, Braune S, Deitmer T, Diesener P, Fischer AS, Hamzic S, Iberl G, Konradi J, Löhler J, Platz T, Rohlfes C, Westhoff M, Winkler S, Wirth R, Graf S. [Curriculum "Tracheostomy management in dysphagia therapy"]. Nervenarzt 2024; 95:342-352. [PMID: 38277047 PMCID: PMC11014872 DOI: 10.1007/s00115-023-01598-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 12/05/2023] [Indexed: 01/27/2024]
Abstract
The number of tracheotomized patients with dysphagia and their need for treatment are continuously increasing in clinical and community settings. The revised version of the directive on home care and community-based intensive care of the Federal Joint Committee (G-BA) requires that tracheotomized patients are regularly evaluated with the aim of identifying and promoting the therapeutic potential after hospital discharge. Dysphagia treatment plays a crucial role as without improvement of severe dysphagia there is practically no possibility for decannulation. Tracheotomized patients with dysphagia are treated by speech and language therapists (SLT); however, the contents of tracheostomy management (TM) are not obligatory in the speech and language therapeutic training curricula, so that there is a need for further education and treatment standards must be secured. Therefore, the German Interdisciplinary Society for Dysphagia (DGD) in cooperation with the participating German medical and therapeutic societies developed a postgraduate curriculum for TM. This should serve as the basis for contents in TM and qualification of therapists within the framework of the delegation of medical services. The goals of the TM curriculum are the definition of theoretical and practical contents of TM, the qualification to perform TM according to current standards of care and quality assurance. The curriculum defines two qualification levels (user and trainer), entry requirements, curricular contents, examination and qualification criteria as well as transitional regulations for SLTs already experienced in TM.
Collapse
Affiliation(s)
- C Ledl
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland.
- Schön Klinik Bad Aibling, Bad Aibling, Deutschland.
| | - U Frank
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Swallowing Research Lab, Universität Potsdam, Potsdam, Deutschland
| | - R Dziewas
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Deutsche Gesellschaft für Neurologie, Berlin, Deutschland
- Deutsche Gesellschaft für NeuroIntensiv- und Notfallmedizin, Jena, Deutschland
- Klinik für Neurologie und neurologische Frührehabilitation, Klinikum Osnabrück, Osnabrück, Deutschland
| | - B Arnold
- Deutscher Berufsverband für Phoniatrie und Pädaudiologie, Berlin, Deutschland
| | - N Bähre
- Deutsche Interdisziplinäre Gesellschaft für Außerklinische Beatmung, Freiburg, Deutschland
| | - C S Betz
- Deutsche Gesellschaft für Hals-Nasen-Ohren Heilkunde, Kopf- und Hals-Chirurgie, Bonn, Deutschland
- Klinik und Poliklinik für HNO-Heilkunde, Universitätsklinikum Hamburg-Eppendorf, Hamburg, Deutschland
| | - S Braune
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- St. Franziskus-Hospital Münster, Münster, Deutschland
| | - T Deitmer
- Deutsche Gesellschaft für Hals-Nasen-Ohren Heilkunde, Kopf- und Hals-Chirurgie, Bonn, Deutschland
| | - P Diesener
- Deutsche Interdisziplinäre Gesellschaft für Außerklinische Beatmung, Freiburg, Deutschland
- Dysphagie-Netzwerk-Südwest e. V., Überlingen, Deutschland
- Dysphagie- und Kanülensprechstunde Hegau-Jugendwerk Gailingen, Gailingen, Deutschland
- Rehaklinik Zihlschlacht, Zihlschlacht-Sitterdorf, Schweiz
| | - A S Fischer
- Juristische Fakultät, Forschungsstelle Medizinrecht, Ludwig-Maximilians-Universität, München, Deutschland
| | - S Hamzic
- Deutscher Bundesverband für akademische Sprachtherapie und Logopädie, Moers, Deutschland
- Universitätsklinikum Gießen und Marburg, Campus Gießen, Neurologische Klinik, Justus-Liebig-Universität, Gießen, Deutschland
| | - G Iberl
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
| | - J Konradi
- Deutscher Bundesverband für akademische Sprachtherapie und Logopädie, Moers, Deutschland
- Institut für Physikalische Therapie, Prävention und Rehabilitation, Universitätsmedizin der Johannes-Gutenberg-Universität Mainz, Mainz, Deutschland
| | - J Löhler
- Deutscher Berufsverband der HNO-Ärzte, Neumünster, Deutschland
| | - T Platz
- Deutsche Gesellschaft für Neurorehabilitation, Berlin, Deutschland
- Institut für Neurorehabilitation und Evidenzbasierung, An-Institut der Universität Greifswald, BDH-Klinik Greifswald, Greifswald, Deutschland
- AG Neurorehabilitation, Universitätsmedizin Greifswald, Greifswald, Deutschland
| | - C Rohlfes
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- BDH-Klinik Hessisch Oldendorf, Hessisch Oldendorf, Deutschland
| | - M Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin, Berlin, Deutschland
- Zentrum für Pneumologie und Thoraxchirurgie, Lungenklinik Hemer, Hemer, Deutschland
| | - S Winkler
- Deutscher Bundesverband für Logopädie, Frechen, Deutschland
| | - R Wirth
- Deutsche Gesellschaft für Geriatrie, Berlin, Deutschland
- Klinik für Altersmedizin, Marien Hospital Herne, Universitätsklinikum der Ruhr-Universität Bochum, Bochum, Deutschland
| | - S Graf
- Deutsche interdisziplinäre Gesellschaft für Dysphagie, München, Deutschland
- Deutsche Gesellschaft für Phoniatrie und Pädaudiologie, Göttingen, Deutschland
- Universitätsklinik für Hör‑, Stimm- und Sprachstörungen, Medizinische Universität Innsbruck, Innsbruck, Österreich
| |
Collapse
|
4
|
Fedida D, Sastre D, Dou Y, Westhoff M, Eldstrom J. Evaluating sequential and allosteric activation models in IKs channels with mutated voltage sensors. J Gen Physiol 2024; 156:e202313465. [PMID: 38294435 PMCID: PMC10829594 DOI: 10.1085/jgp.202313465] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/16/2023] [Revised: 11/30/2023] [Accepted: 01/03/2024] [Indexed: 02/01/2024] Open
Abstract
The ion-conducting IKs channel complex, important in cardiac repolarization and arrhythmias, comprises tetramers of KCNQ1 α-subunits along with 1-4 KCNE1 accessory subunits and calmodulin regulatory molecules. The E160R mutation in individual KCNQ1 subunits was used to prevent activation of voltage sensors and allow direct determination of transition rate data from complexes opening with a fixed number of 1, 2, or 4 activatable voltage sensors. Markov models were used to test the suitability of sequential versus allosteric models of IKs activation by comparing simulations with experimental steady-state and transient activation kinetics, voltage-sensor fluorescence from channels with two or four activatable domains, and limiting slope currents at negative potentials. Sequential Hodgkin-Huxley-type models approximately describe IKs currents but cannot explain an activation delay in channels with only one activatable subunit or the hyperpolarizing shift in the conductance-voltage relationship with more activatable voltage sensors. Incorporating two voltage sensor activation steps in sequential models and a concerted step in opening via rates derived from fluorescence measurements improves models but does not resolve fundamental differences with experimental data. Limiting slope current data that show the opening of channels at negative potentials and very low open probability are better simulated using allosteric models of activation with one transition per voltage sensor, which implies that movement of all four sensors is not required for IKs conductance. Tiered allosteric models with two activating transitions per voltage sensor can fully account for IKs current and fluorescence activation kinetics in constructs with different numbers of activatable voltage sensors.
Collapse
Affiliation(s)
- David Fedida
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Daniel Sastre
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Ying Dou
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Maartje Westhoff
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Jodene Eldstrom
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| |
Collapse
|
5
|
Westhoff M, Keßler M, Baumbach JI. Alveolar gradients in breath analysis. A pilot study with comparison of room air and inhaled air by simultaneous measurements using ion mobility spectrometry. J Breath Res 2023; 17:046009. [PMID: 37611565 DOI: 10.1088/1752-7163/acf338] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2023] [Accepted: 08/23/2023] [Indexed: 08/25/2023]
Abstract
Analyzing exhaled breath samples, especially using a highly sensitive method such as MCC/IMS (multi-capillary column/ion mobility spectrometry), may also detect analytes that are derived from exogenous production. In this regard, there is a discussion about the optimal interpretation of exhaled breath, either by considering volatile organic compounds (VOCs) only in exhaled breath or by additionally considering the composition of room air and calculating the alveolar gradients. However, there are no data on whether the composition and concentration of VOCs in room air are identical to those in truly inhaled air directly before analyzing the exhaled breath. The current study aimed to determine whether the VOCs in room air, which are usually used for the calculation of alveolar gradients, are identical to the VOCs in truly inhaled air. For the measurement of inhaled air and room air, two IMS, each coupled with an MCC that provided a pre-separation of the VOCs, were used in parallel. One device was used for sampling room air and the other for sampling inhaled air. Each device was coupled with a newly invented system that cleaned room air and provided a clean carrier gas, whereas formerly synthetic air had to be used as a carrier gas. In this pilot study, a healthy volunteer underwent three subsequent runs of sampling of inhaled air and simultaneous sampling and analysis of room air. Three of the selected 11 peaks (P4-unknown, P5-1-Butanol, and P9-Furan, 2-methyl-) had significantly higher intensities during inspiration than in room air, and four peaks (P1-1-Propanamine, N-(phenylmethylene), P2-2-Nonanone, P3-Benzene, 1,2,4-trimethyl-, and P11-Acetyl valeryl) had higher intensities in room air. Furthermore, four peaks (P6-Benzaldehyde, P7-Pentane, 2-methyl-, P8-Acetone, and P10-2-Propanamine) showed inconsistent differences in peak intensities between inhaled air and room air. To the best of our knowledge, this is the first study to compare simultaneous sampling of room air and inhaled air using MCC/IMS. The simultaneous measurement of inhaled air and room air showed that using room air for the calculation of alveolar gradients in breath analysis resulted in different alveolar gradient values than those obtained by measuring truly inhaled air.
Collapse
Affiliation(s)
- M Westhoff
- Department of Pneumology, Sleep and Respiratory Medicine, Hemer Lung Clinic, Theo-Funccius-Str. 1, 58675 Hemer, Germany
- Witten/Herdecke University, Alfred-Herrhausen-Str. 50, 58448 Witten, Germany
| | - M Keßler
- University of Applied Sciences Münster, Hüfferstrasse 27, 48149 Münster, Germany
- B. Braun Melsungen AG, Branch Dortmund, Center of Competence Breath Analysis, Otto-Hahn-Str. 15, 44227 Dortmund, Germany
| | - J I Baumbach
- Technical University Dortmund, Faculty Bio- and Chemical Engineering, Emil-Figge-Str. 70, 44227 Dortmund, Germany
| |
Collapse
|
6
|
Westhoff M, Hardebusch T, Litterst P, Breithecker A, Haas M, Kuniss M, Neumann T, Guth S, Wiedenroth CB. Successful simultaneous stenting of a pulmonary artery and vein in pulmonary vascular stenosis due to silicosis. Case report and literature review. Front Cardiovasc Med 2023; 10:1108768. [PMID: 37229232 PMCID: PMC10203551 DOI: 10.3389/fcvm.2023.1108768] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/26/2022] [Accepted: 03/16/2023] [Indexed: 05/27/2023] Open
Abstract
A 58-year-old patient was admitted to the emergency department due to severe respiratory insufficiency. Anamnesis revealed that the patient had experienced increasing stress dyspnea for a few months. Upon imaging, an acute pulmonary embolism was excluded, but peribronchial and hilar soft tissue proliferation with compression of central parts of the pulmonary circulation was found. The patient had a history of silicosis. The histology report showed tumor-free lymph node particles with prominent anthracotic pigment and dust depositions without evidence of IgG4-associated disease. The patient was administered steroid therapy and underwent simultaneous stenting of the left interlobular pulmonary artery and the upper right pulmonary vein. As a result, a significant improvement in symptoms and physical performance was achieved. The diagnosis of inflammatory or, in particular, fibrosing mediastinal processes can be challenging and important clinical symptoms must be taken into account, especially if the pulmonary vasculature is involved. In such cases, the possibility of interventional procedures should be examined in addition to drug therapy options.
Collapse
Affiliation(s)
- M. Westhoff
- Department of Pulmonology, Klinik für Pneumologie, Schlaf und Beatmungsmedizin, Lungenklinik Hemer, Zentrum für Pneumologie und Thoraxchirurgie, Hemer, Germany
- Universität Witten/Herdecke University, Witten, Germany
| | - T. Hardebusch
- Department of Pulmonology, Klinik für Pneumologie, Schlaf und Beatmungsmedizin, Lungenklinik Hemer, Zentrum für Pneumologie und Thoraxchirurgie, Hemer, Germany
| | - P. Litterst
- Department of Pulmonology, Klinik für Pneumologie, Schlaf und Beatmungsmedizin, Lungenklinik Hemer, Zentrum für Pneumologie und Thoraxchirurgie, Hemer, Germany
| | - A. Breithecker
- Department of Radiology, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - M. Haas
- Department of Cardiology, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - M. Kuniss
- Department of Cardiology, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - T. Neumann
- Department of Cardiology, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - S. Guth
- Department of Thoracic Surgery, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| | - C. B. Wiedenroth
- Department of Thoracic Surgery, Kerckhoff Heart and Thorax Center, Bad Nauheim, Germany
| |
Collapse
|
7
|
Voelker TL, Del Villar SG, Westhoff M, Costa AD, Coleman AM, Hell JW, Horne MC, Dickson EJ, Dixon RE. Acute phosphatidylinositol 4,5 bisphosphate depletion destabilizes sarcolemmal expression of cardiac L-type Ca 2+ channel Ca V1.2. Proc Natl Acad Sci U S A 2023; 120:e2221242120. [PMID: 36976770 PMCID: PMC10083594 DOI: 10.1073/pnas.2221242120] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/29/2023] Open
Abstract
CaV1.2 channels are critical players in cardiac excitation-contraction coupling, yet we do not understand how they are affected by an important therapeutic target of heart failure drugs and regulator of blood pressure, angiotensin II. Signaling through Gq-coupled AT1 receptors, angiotensin II triggers a decrease in PIP2, a phosphoinositide component of the plasma membrane (PM) and known regulator of many ion channels. PIP2 depletion suppresses CaV1.2 currents in heterologous expression systems but the mechanism of this regulation and whether a similar phenomenon occurs in cardiomyocytes is unknown. Previous studies have shown that CaV1.2 currents are also suppressed by angiotensin II. We hypothesized that these two observations are linked and that PIP2 stabilizes CaV1.2 expression at the PM and angiotensin II depresses cardiac excitability by stimulating PIP2 depletion and destabilization of CaV1.2 expression. We tested this hypothesis and report that CaV1.2 channels in tsA201 cells are destabilized after AT1 receptor-triggered PIP2 depletion, leading to their dynamin-dependent endocytosis. Likewise, in cardiomyocytes, angiotensin II decreased t-tubular CaV1.2 expression and cluster size by inducing their dynamic removal from the sarcolemma. These effects were abrogated by PIP2 supplementation. Functional data revealed acute angiotensin II reduced CaV1.2 currents and Ca2+ transient amplitudes thus diminishing excitation-contraction coupling. Finally, mass spectrometry results indicated whole-heart levels of PIP2 are decreased by acute angiotensin II treatment. Based on these observations, we propose a model wherein PIP2 stabilizes CaV1.2 membrane lifetimes, and angiotensin II-induced PIP2 depletion destabilizes sarcolemmal CaV1.2, triggering their removal, and the acute reduction of CaV1.2 currents and contractility.
Collapse
Affiliation(s)
- Taylor L Voelker
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Silvia G Del Villar
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Maartje Westhoff
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Alexandre D Costa
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Andrea M Coleman
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Johannes W Hell
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Mary C Horne
- Department of Pharmacology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Eamonn J Dickson
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| | - Rose E Dixon
- Department of Physiology and Membrane Biology, School of Medicine, University of California Davis, Davis, CA 95616
| |
Collapse
|
8
|
Westhoff M, del Villar SG, Voelker TL, Dickson EJ, Dixon RE. Altered Cav1.2 trafficking contributes to β-adrenergic receptor hypo-responsivity in the aging myocardium. Biophys J 2022. [DOI: 10.1016/j.bpj.2021.11.2224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
|
9
|
Kluge S, Janssens U, Welte T, Weber-Carstens S, Schälte G, Salzberger B, Gastmeier P, Langer F, Welper M, Westhoff M, Pfeifer M, Hoffmann F, Böttiger BW, Marx G, Karagiannidis C. Recommendations for treatment of critically ill patients with COVID-19 : Version 3 S1 guideline. Anaesthesist 2021; 70:19-29. [PMID: 33245382 PMCID: PMC7694585 DOI: 10.1007/s00101-020-00879-3] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/06/2023]
Abstract
Since December 2019 a novel coronavirus (severe acute respiratory syndrome coronavirus 2, SARS-CoV-2) has rapidly spread around the world resulting in an acute respiratory illness pandemic. The immense challenges for clinicians and hospitals as well as the strain on many healthcare systems has been unprecedented.The majority of patients present with mild symptoms of coronavirus disease 2019 (COVID-19); however, 5-8% become critically ill and require intensive care treatment. Acute hypoxemic respiratory failure with severe dyspnea and an increased respiratory rate (>30/min) usually leads to intensive care unit (ICU) admission. At this point bilateral pulmonary infiltrates are typically seen. Patients often develop a severe acute respiratory distress syndrome (ARDS).So far, remdesivir and dexamethasone have shown clinical effectiveness in severe COVID-19 in hospitalized patients. The main goal of supportive treatment is to ascertain adequate oxygenation. Invasive mechanical ventilation and repeated prone positioning are key elements in treating severely hypoxemic COVID-19 patients.Strict adherence to basic infection control measures (including hand hygiene) and correct use of personal protection equipment (PPE) are essential in the care of patients. Procedures that lead to formation of aerosols should be carried out with utmost precaution and preparation.
Collapse
Affiliation(s)
- S Kluge
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Germany.
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany.
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Germany.
- ARDS Netzwerk Deutschland, Berlin, Germany.
- Klinik für Intensivmedizin, Universitätsklinikum Hamburg-Eppendorf, Martinistr. 52, 20246, Hamburg, Germany.
| | - U Janssens
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Germany
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- ARDS Netzwerk Deutschland, Berlin, Germany
| | - T Welte
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Germany
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Germany
- ARDS Netzwerk Deutschland, Berlin, Germany
| | - S Weber-Carstens
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Germany
- ARDS Netzwerk Deutschland, Berlin, Germany
| | - G Schälte
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Germany
| | - B Salzberger
- Deutsche Gesellschaft für Infektiologie (DGI), Munich, Germany
| | - P Gastmeier
- Deutsche Gesellschaft für Hygiene und Mikrobiologie (DGHM), Münster, Germany
| | - F Langer
- Gesellschaft für Thrombose und Hämostaseforschung (GTH), Cologne, Germany
| | - M Welper
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Germany
| | - M Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Germany
| | - M Pfeifer
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Germany
| | - F Hoffmann
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- Deutsche Gesellschaft für Kinder- und Jugendmedizin (DGKJ), Berlin, Germany
| | - B W Böttiger
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- Deutscher Rat für Wiederbelebung (German Resuscitation Council, GRC), Ulm, Germany
| | - G Marx
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Germany
- ARDS Netzwerk Deutschland, Berlin, Germany
| | - C Karagiannidis
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Germany
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Germany
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Germany
- ARDS Netzwerk Deutschland, Berlin, Germany
| |
Collapse
|
10
|
Del Villar SG, Voelker TL, Westhoff M, Reddy GR, Spooner HC, Navedo MF, Dickson EJ, Dixon RE. β-Adrenergic control of sarcolemmal Ca V1.2 abundance by small GTPase Rab proteins. Proc Natl Acad Sci U S A 2021. [PMID: 33558236 DOI: 10.1073/pnas.2017937118/-/dcsupplemental] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/31/2023] Open
Abstract
The number and activity of Cav1.2 channels in the cardiomyocyte sarcolemma tunes the magnitude of Ca2+-induced Ca2+ release and myocardial contraction. β-Adrenergic receptor (βAR) activation stimulates sarcolemmal insertion of CaV1.2. This supplements the preexisting sarcolemmal CaV1.2 population, forming large "superclusters" wherein neighboring channels undergo enhanced cooperative-gating behavior, amplifying Ca2+ influx and myocardial contractility. Here, we determine this stimulated insertion is fueled by an internal reserve of early and recycling endosome-localized, presynthesized CaV1.2 channels. βAR-activation decreased CaV1.2/endosome colocalization in ventricular myocytes, as it triggered "emptying" of endosomal CaV1.2 cargo into the t-tubule sarcolemma. We examined the rapid dynamics of this stimulated insertion process with live-myocyte imaging of channel trafficking, and discovered that CaV1.2 are often inserted into the sarcolemma as preformed, multichannel clusters. Similarly, entire clusters were removed from the sarcolemma during endocytosis, while in other cases, a more incremental process suggested removal of individual channels. The amplitude of the stimulated insertion response was doubled by coexpression of constitutively active Rab4a, halved by coexpression of dominant-negative Rab11a, and abolished by coexpression of dominant-negative mutant Rab4a. In ventricular myocytes, βAR-stimulated recycling of CaV1.2 was diminished by both nocodazole and latrunculin-A, suggesting an essential role of the cytoskeleton in this process. Functionally, cytoskeletal disruptors prevented βAR-activated Ca2+ current augmentation. Moreover, βAR-regulation of CaV1.2 was abolished when recycling was halted by coapplication of nocodazole and latrunculin-A. These findings reveal that βAR-stimulation triggers an on-demand boost in sarcolemmal CaV1.2 abundance via targeted Rab4a- and Rab11a-dependent insertion of channels that is essential for βAR-regulation of cardiac CaV1.2.
Collapse
Affiliation(s)
- Silvia G Del Villar
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Taylor L Voelker
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Maartje Westhoff
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Gopireddy R Reddy
- Department of Pharmacology, School of Medicine, University of California, Davis, CA 95616
| | - Heather C Spooner
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Manuel F Navedo
- Department of Pharmacology, School of Medicine, University of California, Davis, CA 95616
| | - Eamonn J Dickson
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Rose E Dixon
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616;
| |
Collapse
|
11
|
Del Villar SG, Voelker TL, Westhoff M, Reddy GR, Spooner HC, Navedo MF, Dickson EJ, Dixon RE. β-Adrenergic control of sarcolemmal Ca V1.2 abundance by small GTPase Rab proteins. Proc Natl Acad Sci U S A 2021; 118:e2017937118. [PMID: 33558236 PMCID: PMC7896340 DOI: 10.1073/pnas.2017937118] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022] Open
Abstract
The number and activity of Cav1.2 channels in the cardiomyocyte sarcolemma tunes the magnitude of Ca2+-induced Ca2+ release and myocardial contraction. β-Adrenergic receptor (βAR) activation stimulates sarcolemmal insertion of CaV1.2. This supplements the preexisting sarcolemmal CaV1.2 population, forming large "superclusters" wherein neighboring channels undergo enhanced cooperative-gating behavior, amplifying Ca2+ influx and myocardial contractility. Here, we determine this stimulated insertion is fueled by an internal reserve of early and recycling endosome-localized, presynthesized CaV1.2 channels. βAR-activation decreased CaV1.2/endosome colocalization in ventricular myocytes, as it triggered "emptying" of endosomal CaV1.2 cargo into the t-tubule sarcolemma. We examined the rapid dynamics of this stimulated insertion process with live-myocyte imaging of channel trafficking, and discovered that CaV1.2 are often inserted into the sarcolemma as preformed, multichannel clusters. Similarly, entire clusters were removed from the sarcolemma during endocytosis, while in other cases, a more incremental process suggested removal of individual channels. The amplitude of the stimulated insertion response was doubled by coexpression of constitutively active Rab4a, halved by coexpression of dominant-negative Rab11a, and abolished by coexpression of dominant-negative mutant Rab4a. In ventricular myocytes, βAR-stimulated recycling of CaV1.2 was diminished by both nocodazole and latrunculin-A, suggesting an essential role of the cytoskeleton in this process. Functionally, cytoskeletal disruptors prevented βAR-activated Ca2+ current augmentation. Moreover, βAR-regulation of CaV1.2 was abolished when recycling was halted by coapplication of nocodazole and latrunculin-A. These findings reveal that βAR-stimulation triggers an on-demand boost in sarcolemmal CaV1.2 abundance via targeted Rab4a- and Rab11a-dependent insertion of channels that is essential for βAR-regulation of cardiac CaV1.2.
Collapse
Affiliation(s)
- Silvia G Del Villar
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Taylor L Voelker
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Maartje Westhoff
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Gopireddy R Reddy
- Department of Pharmacology, School of Medicine, University of California, Davis, CA 95616
| | - Heather C Spooner
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Manuel F Navedo
- Department of Pharmacology, School of Medicine, University of California, Davis, CA 95616
| | - Eamonn J Dickson
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616
| | - Rose E Dixon
- Department of Physiology and Membrane Biology, School of Medicine, University of California, Davis, CA 95616;
| |
Collapse
|
12
|
Abstract
The logistical and infectious peculiarities and requirements challenge the intensive care treatment teams aiming at a successful liberation of patients from long-term mechanical ventilation. Especially in the pandemic, it is therefore important to use all potentials for weaning and decannulation, respectively, in patients with prolonged weaning.Weaning centers represent units of intensive medical care with a particular specialization in prolonged weaning. They are an integral part of a continuous care concept for these patients. A systematic weaning concept in the pandemic includes structural, personnel, equipment, infectiological and hygienic issues. In addition to the S2k guideline "Prolonged weaning" this position paper hightlights a new classification in prolonged weaning and organizational structures required in the future for the challenging pandemic situation. Category A patients with high weaning potential require a structured respiratory weaning in specialized weaning units, so as to get the greatest possible chance to realize successful weaning. Patients in category B with low or currently nonexistent weaning potential should receive a weaning attempt after an intermediate phase of further stabilization in an out-of-hospital ventilator unit. Category C patients with no weaning potential require a permanent out-of-hospital care, alternatively finishing mechanical ventilation with palliative support.Finally, under perspective in the position paper the following conceivable networks and registers in the future are presented: 1. locally organized regional networks of certified weaning centers, 2. a central, nationwide register of weaning capacities accordingly the already existing DIVI register and 3. registration of patients in difficult or prolonged weaning.
Collapse
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Zentrum für Pneumologie und Thoraxchirurgie, Hemer
- Universität Witten-Herdecke, Witten
| | - J Geiseler
- Medizinische Klinik IV: Klinik für Pneumologie, Beatmungs- und Schlafmedizin, Klinikum Vest GmbH, Paracelsus-Klinik, Marl
| | - B Schönhofer
- Pneumologische Praxis und pneumologischer Konsildienst im Klinikum Agnes Karll Laatzen, Klinikum Region Hannover, Laatzen, Germany
| | - M Pfeifer
- Klinik und Poliklinik für Innere Medizin II, Universitätsklinik Regensburg, Regensburg
- Abteilung für Pneumologie, Fachklinik für Lungenerkrankungen Donaustauf, Donaustauf
- Krankenhaus Barmherzige Brüder, Klinik für Pneumologie und konservative Intensivmedizin, Regensburg
| | - D Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Akademisches Lehrkrankenhaus der Philipps-Universität Marburg, Schmallenberg
| | - M Bachmann
- Klinik für Intensiv- und Beatmungsmedizin, Asklepios-Klinik Harburg, Hamburg
| | - W Randerath
- Institut für Pneumologie an der Universität zu Köln, Köln
- Klinik für Pneumologie, Krankenhaus Bethanien, Solingen
| |
Collapse
|
13
|
Kluge S, Janssens U, Welte T, Weber-Carstens S, Schälte G, Spinner CD, Malin JJ, Gastmeier P, Langer F, Wepler M, Westhoff M, Pfeifer M, Rabe KF, Hoffmann F, Böttiger BW, Weinmann-Menke J, Kersten A, Berlit P, Haase R, Marx G, Karagiannidis C. [S2k Guideline - Recommendations for Inpatient Therapy of Patients with COVID-19]. Pneumologie 2021; 75:88-112. [PMID: 33450783 DOI: 10.1055/a-1334-1925] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/07/2023]
Abstract
Since December 2019, the novel coronavirus SARS-CoV-2 (Severe Acute Respiratory Syndrome - Corona Virus-2) has been spreading rapidly in the sense of a global pandemic. This poses significant challenges for clinicians and hospitals and is placing unprecedented strain on the healthcare systems of many countries. The majority of patients with Coronavirus Disease 2019 (COVID-19) present with only mild symptoms such as cough and fever. However, about 6 % require hospitalization. Early clarification of whether inpatient and, if necessary, intensive care treatment is medically appropriate and desired by the patient is of particular importance in the pandemic. Acute hypoxemic respiratory insufficiency with dyspnea and high respiratory rate (> 30/min) usually leads to admission to the intensive care unit. Often, bilateral pulmonary infiltrates/consolidations or even pulmonary emboli are already found on imaging. As the disease progresses, some of these patients develop acute respiratory distress syndrome (ARDS). Mortality reduction of available drug therapy in severe COVID-19 disease has only been demonstrated for dexamethasone in randomized controlled trials. The main goal of supportive therapy is to ensure adequate oxygenation. In this regard, invasive ventilation and repeated prone positioning are important elements in the treatment of severely hypoxemic COVID-19 patients. Strict adherence to basic hygiene, including hand hygiene, and the correct wearing of adequate personal protective equipment are essential when handling patients. Medically necessary actions on patients that could result in aerosol formation should be performed with extreme care and preparation.
Collapse
Affiliation(s)
- S Kluge
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN); Berlin.,Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin.,ARDS Netzwerk Deutschland, Berlin
| | - U Janssens
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN); Berlin.,Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,ARDS Netzwerk Deutschland, Berlin
| | - T Welte
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN); Berlin.,Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin.,ARDS Netzwerk Deutschland, Berlin
| | - S Weber-Carstens
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg.,ARDS Netzwerk Deutschland, Berlin
| | - G Schälte
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg
| | - C D Spinner
- Deutsche Gesellschaft für Infektiologie (DGI), Berlin
| | - J J Malin
- Deutsche Gesellschaft für Infektiologie (DGI), Berlin
| | - P Gastmeier
- Deutsche Gesellschaft für Hygiene und Mikrobiologie (DGHM), Münster
| | - F Langer
- Gesellschaft für Thrombose und Hämostaseforschung (GTH), Köln
| | - M Wepler
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg
| | - M Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin
| | - M Pfeifer
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin
| | - K F Rabe
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin
| | - F Hoffmann
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutsche Gesellschaft für Kinder- und Jugendmedizin (DGKJ), Berlin
| | - B W Böttiger
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutscher Rat für Wiederbelebung (German Resuscitation Council; GRC), Ulm
| | | | - A Kersten
- Deutsche Gesellschaft für Kardiologie (DGK)
| | - P Berlit
- Deutsche Gesellschaft für Neurologie (DGN)
| | - R Haase
- Patientenvertretung (individueller Betroffener)
| | - G Marx
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg.,ARDS Netzwerk Deutschland, Berlin
| | - C Karagiannidis
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN); Berlin.,Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin.,Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin.,ARDS Netzwerk Deutschland, Berlin
| |
Collapse
|
14
|
Kluge S, Janssens U, Welte T, Weber-Carstens S, Schälte G, Salzberger B, Gastmeier P, Langer F, Wepler M, Westhoff M, Pfeifer M, Hoffmann F, Böttiger BW, Marx G, Karagiannidis C. [German recommendations for treatment of critically ill patients with COVID-19-version 3]. Pneumologe (Berl) 2020; 17:406-425. [PMID: 33110402 PMCID: PMC7581953 DOI: 10.1007/s10405-020-00359-w] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/28/2023]
Abstract
Seit Dezember 2019 verbreitet sich das neuartige Coronavirus SARS-CoV‑2 (Severe Acute Respiratory Syndrome – Corona Virus-2) rasch im Sinne einer weltweiten Pandemie. Dies stellt Kliniker und Krankenhäuser vor große Herausforderungen und belastet die Gesundheitssysteme vieler Länder in einem nie dagewesenen Ausmaß. Die Mehrheit der Patienten zeigt lediglich milde Symptome der sogenannten Coronavirus Disease 2019 (COVID-19). Dennoch benötigen etwa 5–8 % eine intensivmedizinische Behandlung. Die akute hypoxämische respiratorische Insuffizienz mit Dyspnoe und hoher Atemfrequenz (>30/Min) führt in der Regel zur Aufnahme auf die Intensivstation. Oft finden sich dann bereits bilaterale pulmonale Infiltrate/Konsolidierungen oder auch Lungenembolien in der Bildgebung. Im weiteren Verlauf entwickeln viele Patienten ein Acute Respiratory Distress Syndrome (ARDS). Eine klinische Wirksamkeit einer medikamentösen Therapie bei schwerer COVID-Erkrankung (hospitalisierte Patienten) ist bisher für Remdesivir und Dexamethason nachgewiesen. Das Hauptziel der supportiven Therapie ist es eine ausreichende Oxygenierung sicherzustellen. Die invasive Beatmung und wiederholte Bauchlagerung sind dabei wichtige Elemente in der Behandlung von schwer hypoxämischen COVID-19 Patienten. Die strikte Einhaltung der Basishygiene, einschließlich der Händehygiene, sowie das korrekte Tragen von adäquater persönlicher Schutzausrüstung sind im Umgang mit den Patienten unabdingbar. Prozeduren, die zur Aerosolbildung führen könnten, sollten falls nötig, mit äußerster Sorgfalt und Vorbereitung durchgeführt werden.
Collapse
Affiliation(s)
- S. Kluge
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
- Klinik für Intensivmedizin, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246 Hamburg, Deutschland
| | - U. Janssens
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - T. Welte
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - S. Weber-Carstens
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - G. Schälte
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - B. Salzberger
- Deutsche Gesellschaft für Infektiologie (DGI), München, Deutschland
| | - P. Gastmeier
- Deutsche Gesellschaft für Hygiene und Mikrobiologie (DGHM), Münster, Deutschland
| | - F. Langer
- Gesellschaft für Thrombose und Hämostaseforschung (GTH), Köln, Deutschland
| | - M. Wepler
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - M. Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
| | - M. Pfeifer
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
| | - F. Hoffmann
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Kinder- und Jugendmedizin (DGKJ), Berlin, Deutschland
| | - B. W. Böttiger
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutscher Rat für Wiederbelebung (German Resuscitation Council; GRC), Ulm, Deutschland
| | - G. Marx
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - C. Karagiannidis
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| |
Collapse
|
15
|
Kluge S, Janssens U, Welte T, Weber-Carstens S, Schälte G, Salzberger B, Gastmeier P, Langer F, Wepler M, Westhoff M, Pfeifer M, Hoffmann F, Böttiger BW, Marx G, Karagiannidis C. [German recommendations for treatment of critically ill patients with COVID-19-version 3 : S1-guideline]. Anaesthesist 2020; 69:653-664. [PMID: 32833080 PMCID: PMC7444177 DOI: 10.1007/s00101-020-00833-3] [Citation(s) in RCA: 12] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/08/2023]
Abstract
Seit Dezember 2019 verbreitet sich das neuartige Coronavirus SARS-CoV‑2 (Severe Acute Respiratory Syndrome – Corona Virus-2) rasch im Sinne einer weltweiten Pandemie. Dies stellt Kliniker und Krankenhäuser vor große Herausforderungen und belastet die Gesundheitssysteme vieler Länder in einem nie dagewesenen Ausmaß. Die Mehrheit der Patienten zeigt lediglich milde Symptome der sogenannten Coronavirus Disease 2019 (COVID-19). Dennoch benötigen etwa 5–8 % eine intensivmedizinische Behandlung. Die akute hypoxämische respiratorische Insuffizienz mit Dyspnoe und hoher Atemfrequenz (>30/Min) führt in der Regel zur Aufnahme auf die Intensivstation. Oft finden sich dann bereits bilaterale pulmonale Infiltrate/Konsolidierungen oder auch Lungenembolien in der Bildgebung. Im weiteren Verlauf entwickeln viele Patienten ein Acute Respiratory Distress Syndrome (ARDS). Eine klinische Wirksamkeit einer medikamentösen Therapie bei schwerer COVID-Erkrankung (hospitalisierte Patienten) ist bisher für Remdesivir und Dexamethason nachgewiesen. Das Hauptziel der supportiven Therapie ist es eine ausreichende Oxygenierung sicherzustellen. Die invasive Beatmung und wiederholte Bauchlagerung sind dabei wichtige Elemente in der Behandlung von schwer hypoxämischen COVID-19 Patienten. Die strikte Einhaltung der Basishygiene, einschließlich der Händehygiene, sowie das korrekte Tragen von adäquater persönlicher Schutzausrüstung sind im Umgang mit den Patienten unabdingbar. Prozeduren, die zur Aerosolbildung führen könnten, sollten falls nötig, mit äußerster Sorgfalt und Vorbereitung durchgeführt werden.
Collapse
Affiliation(s)
- S Kluge
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland.
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland.
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland.
- ARDS Netzwerk Deutschland, Berlin, Deutschland.
- Klinik für Intensivmedizin, Universitätsklinikum Hamburg-Eppendorf, Martinistraße 52, 20246, Hamburg, Deutschland.
| | - U Janssens
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - T Welte
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - S Weber-Carstens
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - G Schälte
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - B Salzberger
- Deutsche Gesellschaft für Infektiologie (DGI), München, Deutschland
| | - P Gastmeier
- Deutsche Gesellschaft für Hygiene und Mikrobiologie (DGHM), Münster, Deutschland
| | - F Langer
- Gesellschaft für Thrombose und Hämostaseforschung (GTH), Köln, Deutschland
| | - M Wepler
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
| | - M Westhoff
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
| | - M Pfeifer
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
| | - F Hoffmann
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Kinder- und Jugendmedizin (DGKJ), Berlin, Deutschland
| | - B W Böttiger
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutscher Rat für Wiederbelebung (German Resuscitation Council; GRC), Ulm, Deutschland
| | - G Marx
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Anästhesiologie und Intensivmedizin (DGAI), Nürnberg, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| | - C Karagiannidis
- Deutsche Gesellschaft für Internistische Intensivmedizin und Notfallmedizin (DGIIN), Berlin, Deutschland
- Deutsche Interdisziplinäre Vereinigung für Intensiv- und Notfallmedizin (DIVI), Berlin, Deutschland
- Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin (DGP), Berlin, Deutschland
- ARDS Netzwerk Deutschland, Berlin, Deutschland
| |
Collapse
|
16
|
Pfeifer M, Ewig S, Voshaar T, Randerath W, Bauer T, Geiseler J, Dellweg D, Westhoff M, Windisch W, Schönhofer B, Kluge S, Lepper PM. [Position Paper for the State of the Art Application of Respiratory Support in Patients with COVID-19 - German Respiratory Society]. Pneumologie 2020; 74:337-357. [PMID: 32323287 PMCID: PMC7378547 DOI: 10.1055/a-1157-9976] [Citation(s) in RCA: 30] [Impact Index Per Article: 7.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
Against the background of the pandemic caused by infection with the SARS-CoV-2, the German Society for Pneumology and Respiratory Medicine (DGP e.V.), in cooperation with other associations, has designated a team of experts in order to answer the currently pressing questions about therapy strategies in dealing with COVID-19 patients suffering from acute respiratory insufficiency (ARI).The position paper is based on the current knowledge that is evolving daily. Many of the published and cited studies require further review, also because many of them did not undergo standard review processes.Therefore, this position paper is also subject to a continuous review process and will be further developed in cooperation with the other professional societies.This position paper is structured into the following five topics:1. Pathophysiology of acute respiratory insufficiency in patients without immunity infected with SARS-CoV-22. Temporal course and prognosis of acute respiratory insufficiency during the course of the disease3. Oxygen insufflation, high-flow oxygen, non-invasive ventilation and invasive ventilation with special consideration of infectious aerosol formation4. Non-invasive ventilation in ARI5. Supply continuum for the treatment of ARIKey points have been highlighted as core statements and significant observations. Regarding the pathophysiological aspects of acute respiratory insufficiency (ARI), the pulmonary infection with SARS-CoV-2 COVID-19 runs through three phases: early infection, pulmonary manifestation and severe hyperinflammatory phase.There are differences between advanced COVID-19-induced lung damage and those changes seen in Acute Respiratory Distress Syndromes (ARDS) as defined by the Berlin criteria. In a pathophysiologically plausible - but currently not yet histopathologically substantiated - model, two types (L-type and H-type) are distinguished, which correspond to an early and late phase. This distinction can be taken into consideration in the differential instrumentation in the therapy of ARI.The assessment of the extent of ARI should be carried out by an arterial or capillary blood gas analysis under room air conditions and must include the calculation of the oxygen supply (measured from the variables of oxygen saturation, the Hb value, the corrected values of the Hüfner number and the cardiac output). In principle, aerosols can cause transmission of infectious viral particles. Open systems or leakage systems (so-called vented masks) can prevent the release of respirable particles. Procedures in which the invasive ventilation system must be opened, and endotracheal intubation must be carried out are associated with an increased risk of infection.The protection of personnel with personal protective equipment should have very high priority because fear of contagion must not be a primary reason for intubation. If the specifications for protective equipment (eye protection, FFP2 or FFP-3 mask, gown) are adhered to, inhalation therapy, nasal high-flow (NHF) therapy, CPAP therapy or NIV can be carried out according to the current state of knowledge without increased risk of infection to the staff. A significant proportion of patients with respiratory failure presents with relevant hypoxemia, often also caused by a high inspiratory oxygen fraction (FiO2) including NHF, and this hypoxemia cannot be not completely corrected. In this situation, CPAP/NIV therapy can be administered under use of a mouth and nose mask or a respiratory helmet as therapy escalation, as long as the criteria for endotracheal intubation are not fulfilled.In acute hypoxemic respiratory insufficiency, NIV should be performed in an intensive care unit or in a comparable unit by personnel with appropriate expertise. Under CPAP/NIV, a patient can deteriorate rapidly. For this reason, continuous monitoring with readiness to carry out intubation must be ensured at all times. If CPAP/NIV leads to further progression of ARI, intubation and subsequent invasive ventilation should be carried out without delay if no DNI order is in place.In the case of patients in whom invasive ventilation, after exhausting all guideline-based measures, is not sufficient, extracorporeal membrane oxygenation procedure (ECMO) should be considered to ensure sufficient oxygen supply and to remove CO2.
Collapse
Affiliation(s)
- M Pfeifer
- Klinik und Poliklinik für Innere Medizin II, Universitätsklinik Regensburg, Regensburg
- Abteilung für Pneumologie, Fachklinik für Lungenerkrankungen Donaustauf
- Krankenhaus Barmherzige Brüder, Klinik für Pneumologie und konservative Intensivmedizin, Regensburg
| | - S Ewig
- Thoraxzentrum Ruhrgebiet, Department of Respiratory and Infectious Diseases, EVK Herne and Augusta-Krankenanstalt Bochum, Bochum
| | - T Voshaar
- Schwerpunkt Pneumologie, Allergologie, Klinische Immunologie, Zentrum für Schlaf- und Beatmungsmedizin, Krankenhaus Bethanien, Moers
| | - W Randerath
- Institut für Pneumologie an der Universität zu Köln, Köln
- Klinik für Pneumologie, Krankenhaus Bethanien, Solingen
| | - T Bauer
- Lungenklinik Heckeshorn, Helios Klinikum Emil von Behring GmbH, Berlin
| | - J Geiseler
- Medizinische Klinik IV: Klinik für Pneumologie, Beatmungs- und Schlafmedizin, Klinikum Vest GmbH, Paracelsus-Klinik, Marl
| | - D Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Akademisches Lehrkrankenhaus der Philipps-Universität Marburg, Schmallenberg Grafschaft
| | - M Westhoff
- Klinik für Pneumologie, Lungenklinik Hemer, Hemer
- Universität Witten-Herdecke, Witten
| | - W Windisch
- Universität Witten-Herdecke, Witten
- Klinik für Pneumologie, Klinikum Köln-Merheim, Kliniken der Stadt Köln, Lehrstuhl für Pneumologie der Universität Witten-Herdecke, Köln
| | - B Schönhofer
- Pneumologische Praxis und pneumologischer Konsildienst im Klinikum Agnes Karll Laatzen, Klinikum Region Hannover, Laatzen
| | - S Kluge
- Klinik für Intensivmedizin, Universitätsklinikum Hamburg-Eppendorf, Hamburg
| | - P M Lepper
- Innere Medizin V - Pneumologie, Allergologie, Beatmungs- und Umweltmedizin, Universitätsklinikum des Saarlandes, Homburg/Saar
| |
Collapse
|
17
|
Wiesner B, Bachmann M, Blum TG, Forchheim S, Geiseler J, Kassin A, Kretzschmar E, Weber-Carstens S, Westhoff M, Witzenrath M, Grohé C. [Responsibilities of Weaning Centers during the COVID-19 Pandemic Outbreak - Recommendations for the Assignment of ICU Capacities in COVID-19 Patients as shown by the Berlin-Brandenburg POST-SAVE-Model]. Pneumologie 2020; 74:358-365. [PMID: 32294763 PMCID: PMC7356087 DOI: 10.1055/a-1153-9710] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Die enorme Zunahme von Patienten mit schwerer respiratorischer Insuffizienz aufgrund der COVID19-Pandemie erfordert einen systematischen Ansatz zur Optimierung der Betreuung von beatmeten Patienten. Ein standardisierter Algorithmus namens „SAVE“ wurde in Berlin entwickelt, um Patienten mit COVID-19-Infektion, die eine invasive Beatmung benötigen, zu lenken. Um Bettenkapazitäten auf den Intensivstationen sicherzustellen, muss eine konstante Patientenentlassung gewährleistet sein. Ein strukturierter Entlassungsprozess der Patienten nach der Akutbehandlung ist dringend erforderlich. In einem nächsten Schritt haben wir einen Triage-Algorithmus entwickelt, um Patienten auf SAVE-Intensivstationen zu identifizieren, die das Potenzial haben, von der Beatmung entwöhnt zu werden und in dafür spezialisierte Einrichtungen zu verlegen. Dieser Prozess ist das POST-SAVE-Konzept. In der vorliegenden Arbeit werden die Algorithmen dargestellt, einschließlich der Verwendung einer standardisierten digitalen Datenbank, der Verwendung geschulter Lotsen zur Erleichterung der Kommunikation zwischen SAVE-Intensivstationen und Weaningeinheiten und der Etablierung eines prospektiven Datenregisters, um Patienten dauerhaft hinsichtlich ihres Weaningpotenzials reevaluieren zu können.
Collapse
Affiliation(s)
| | - M Bachmann
- Asklepios Klinikum Harburg, Zentrum für Atemwegs- und Thoraxmedizin
| | - T-G Blum
- Lungenklinik Heckeshorn, Helios Klinikum Emil von Behring, Berlin
| | | | | | - A Kassin
- Evangelische Lungenklinik, Berlin
| | | | - S Weber-Carstens
- Charité-Universitätsmedizin Berlin, Klinik für Anästhesiologie m.S. operative Intensivmedizin
| | - M Westhoff
- Lungenklinik Hemer, Klinik für Pneumologie, Schlaf- und Beatmungsmedizin; Universität Witten-Herdecke
| | - M Witzenrath
- Charité-Universitätsmedizin Berlin, Medizinische Klinik mit Schwerpunkt Infektiologie und Pneumologie
| | - C Grohé
- Evangelische Lungenklinik, Berlin
| |
Collapse
|
18
|
Schönhofer B, Geiseler J, Dellweg D, Fuchs H, Moerer O, Weber-Carstens S, Westhoff M, Windisch W, Hirschfeld-Araujo J, Janssens U, Rollnik J, Rosseau S, Schreiter D, Sitter H. [Prolonged Weaning - S2k-Guideline Published by the German Respiratory Society]. Pneumologie 2019; 73:723-814. [PMID: 31816642 DOI: 10.1055/a-1010-8764] [Citation(s) in RCA: 27] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Mechanical ventilation (MV) is an essential part of modern intensive care medicine. MV is performed in patients with severe respiratory failure caused by insufficiency of respiratory muscles and/or lung parenchymal disease when/after other treatments, (i. e. medication, oxygen, secretion management, continuous positive airway pressure or nasal highflow) have failed.MV is required to maintain gas exchange and to buy time for curative therapy of the underlying cause of respiratory failure. In the majority of patients weaning from MV is routine and causes no special problems. However, about 20 % of patients need ongoing MV despite resolution of the conditions which precipitated the need for MV. Approximately 40 - 50 % of time spent on MV is required to liberate the patient from the ventilator, a process called "weaning."There are numberous factors besides the acute respiratory failure that have an impact on duration and success rate of the weaning process such as age, comorbidities and conditions and complications acquired in the ICU. According to an international consensus conference "prolonged weaning" is defined as weaning process of patients who have failed at least three weaning attempts or require more than 7 days of weaning after the first spontaneous breathing trial (SBT). Prolonged weaning is a challenge, therefore, an inter- and multi-disciplinary approach is essential for a weaning success.In specialised weaning centers about 50 % of patients with initial weaning failure can be liberated from MV after prolonged weaning. However, heterogeneity of patients with prolonged weaning precludes direct comparisons of individual centers. Patients with persistant weaning failure either die during the weaning process or are discharged home or to a long term care facility with ongoing MV.Urged by the growing importance of prolonged weaning, this Sk2-guideline was first published in 2014 on the initiative of the German Respiratory Society (DGP) together with other scientific societies involved in prolonged weaning. Current research and study results, registry data and experience in daily practice made the revision of this guideline necessary.The following topics are dealt with in the guideline: Definitions, epidemiology, weaning categories, the underlying pathophysiology, prevention of prolonged weaning, treatment strategies in prolonged weaning, the weaning unit, discharge from hospital on MV and recommendations for end of life decisions.Special emphasis in the revision of the guideline was laid on the following topics:- A new classification of subgroups of patients in prolonged weaning- Important aspects of pneumological rehabilitation and neurorehabilitation in prolonged weaning- Infrastructure and process organization in the care of patients in prolonged weaning in the sense of a continuous treatment concept- Therapeutic goal change and communication with relativesAspects of pediatric weaning are given separately within the individual chapters.The main aim of the revised guideline is to summarize current evidence and also expert based- knowledge on the topic of "prolonged weaning" and, based on the evidence and the experience of experts, make recommendations with regard to "prolonged weaning" not only in the field of acute medicine but also for chronic critical care.Important addressees of this guideline are Intensivists, Pneumologists, Anesthesiologists, Internists, Cardiologists, Surgeons, Neurologists, Pediatricians, Geriatricians, Palliative care clinicians, Rehabilitation physicians, Nurses in intensive and chronic care, Physiotherapists, Respiratory therapists, Speech therapists, Medical service of health insurance and associated ventilator manufacturers.
Collapse
Affiliation(s)
| | - J Geiseler
- Klinikum Vest, Medizinische Klinik IV: Pneumologie, Beatmungs- und Schlafmedizin, Marl
| | - D Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung Pneumologie II, Schmallenberg
| | - H Fuchs
- Universitätsklinikum Freiburg, Zentrum für Kinder- und Jugendmedizin, Neonatologie und pädiatrische Intensivmedizin, Freiburg
| | - O Moerer
- Universitätsmedizin Göttingen, Klinik für Anästhesiologie, Göttingen
| | - S Weber-Carstens
- Charité - Universitätsmedizin Berlin, Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Campus Virchow-Klinikum und Campus Mitte, Berlin
| | | | - W Windisch
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Universität Witten/Herdecke
| | | | - U Janssens
- St. Antonius-Hospital GmbH, Klinik für Innere Medizin und Internistische Intensivmedizin, Eschweiler
| | - J Rollnik
- BDH-Klinik Hessisch Oldendorf, Neurologisches Zentrum mit Intensivmedizin, Hessisch Oldendorf
| | - S Rosseau
- Klinik Ernst von Bergmann Bad Belzig gGmbH, Pneumologisches Beatmungszentrum, Bad Belzig
| | - D Schreiter
- Helios Park-Klinikum Leipzig, Klinik für Intensivmedizin, Leipzig
| | - H Sitter
- Philips-Universität Marburg, Institut für chirurgische Forschung, Marburg (Moderatioin für AWMF)
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | |
Collapse
|
19
|
Geiseler J, Westhoff M, Dellweg D, Voshaar T, Hetzel M, Pfeifer M. Positionspapier zu Ursachen und Diagnostik der Beatmungsabhängigkeit sowie zu praktischer Durchführung und Abrechnung des Weaning-Prozesses. Pneumologie 2019; 73:716-722. [DOI: 10.1055/a-1039-7143] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Affiliation(s)
- J. Geiseler
- Klinikum Vest, Medizinische Klinik IV, Pneumologie, Beatmungs- und Schlafmedizin, Marl
| | | | - D. Dellweg
- Fachkrankenhaus Kloster Grafschaft GmbH, Abteilung für Pneumologie II, Schmallenberg
| | - T. Voshaar
- Stiftung Krankenhaus Bethanien für die Grafschaft Moers, Akademisches Lehrkrankenhaus der Universität Duisburg-Essen, Moers
| | - M. Hetzel
- Klinik für Pneumologie, Internistische Intensivmedizin, Beatmungsmedizin und Allgemeine Innere Medizin, Krankenhaus vom Roten Kreuz Bad Cannstatt GmbH, Stuttgart
| | - M. Pfeifer
- Zentrum für Pneumologie, Klinik Donaustauf, Donaustauf
| |
Collapse
|
20
|
Westhoff M, Finger M, Perlowsky A, Kreppein U. Nicht-invasive Beatmung – Schritt für Schritt. Pneumologie 2019; 73:544-548. [DOI: 10.1055/a-0760-7092] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
|
21
|
Meyer FJ, Borst MM, Buschmann HC, Claussen M, Dumitrescu D, Ewert R, Friedmann-Bette B, Gläser S, Glöckl R, Haring K, Lehnigk B, Ochmann U, Preisser AM, Sorichter S, Westhoff M, Worth H. [Exercise Testing in Respiratory Medicine - DGP Recommendations]. Pneumologie 2018; 72:687-731. [PMID: 30304755 DOI: 10.1055/a-0637-8593] [Citation(s) in RCA: 8] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Abstract
This document replaces the DGP recommendations published in 1998 and 2013. Based on recent studies and a consensus conference, the indications, choice and performance of the adequate exercise testing method and its necessary technical and staffing setting are discussed. Detailed recommendations are provided: for blood gas analysis and right heart catheterization during exercise, walk tests, spiroergometry, and stress echocardiography. The correct use of different exercise tests is discussed for specific situations in respiratory medicine: exercise induced asthma, obesity, monitoring of rehabilitation or therapeutical interventions, preoperative risk stratification, and evaluation in occupational medicine.
Collapse
Affiliation(s)
- F J Meyer
- Lungenzentrum München (LZM Bogenhausen-Harlaching), Städtisches Klinikum München GmbH
| | - M M Borst
- Medizinische Klinik I, Caritas-Krankenhaus, Bad Mergentheim
| | - H-C Buschmann
- Klinik für Pneumologie und Allgemeine Innere Medizin, Brüderkrankenhaus St. Josef, Paderborn
| | - M Claussen
- LungenClinic Grosshansdorf, Großhansdorf
| | - D Dumitrescu
- Herzzentrum Uniklinik Köln, Klinik für Innere Medizin III
| | - R Ewert
- Klinik und Poliklinik für Innere Medizin B, Bereich Pneumologie/Infektiologie, Universitätsmedizin Greifswald
| | | | - S Gläser
- Klinik für Innere Medizin - Pneumologie, Vivantes Klinikum Spandau, Berlin
| | - R Glöckl
- Schön Klinik Berchtesgadener Land, Schönau am Königssee
| | - K Haring
- Lungenzentrum München (LZM Bogenhausen-Harlaching), Städtisches Klinikum München GmbH
| | - B Lehnigk
- Paracelsus-Harz-Klinik, Abt. Pneumologie OT Bad Suderode, Quedlinburg
| | - U Ochmann
- Institut für Arbeits-, Sozial- und Umweltmedizin, Klinikum der Universität München
| | - A M Preisser
- Zentralinstitut für Arbeitsmedizin und Maritime Medizin, Universitätsklinikum Hamburg-Eppendorf
| | - S Sorichter
- St. Josefskrankenhaus, Klinik für Pneumologie und Beatmungsmedizin, Freiburg
| | - M Westhoff
- Universität Witten-Herdecke, Klinik für Pneumologie, Lungenklinik Hemer
| | | |
Collapse
|
22
|
Thompson E, Eldstrom J, Westhoff M, McAfee D, Fedida D. The I Ks Channel Response to cAMP Is Modulated by the KCNE1:KCNQ1 Stoichiometry. Biophys J 2018; 115:1731-1740. [PMID: 30314657 DOI: 10.1016/j.bpj.2018.09.018] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/18/2018] [Revised: 09/08/2018] [Accepted: 09/20/2018] [Indexed: 12/29/2022] Open
Abstract
The delayed potassium rectifier current, IKs, is assembled from tetramers of KCNQ1 and varying numbers of KCNE1 accessory subunits in addition to calmodulin. This channel complex is important in the response of the cardiac action potential to sympathetic stimulation, during which IKs is enhanced. This is likely due to channels opening more quickly, more often, and to greater sublevel amplitudes during adrenergic stimulation. KCNQ1 alone is unresponsive to cyclic adenosine monophosphate (cAMP), and thus KCNE1 is required for a functional effect of protein kinase A phosphorylation. Here, we investigate the effect that KCNE1 has on the response to 8-4-chlorophenylthio (CPT)-cAMP, a membrane-permeable cAMP analog, by varying the number of KCNE1 subunits present using fusion constructs of IKs with either one (EQQQQ) or two (EQQ) KCNE1 subunits in the channel complex with KCNQ1. These experiments use both whole-cell and single-channel recording techniques. EQQ (2:4, E1:Q1) shows a significant shift in V1/2 of activation from 10.4 mV ± 2.2 in control to -2.7 mV ± 1.2 (p-value: 0.0024). EQQQQ (1:4, E1:Q1) shows a smaller change in response to 8-CPT-cAMP, 6.3 mV ± 2.3 to -3.2 mV ± 3.0 (p-value: 0.0435). As the number of KCNE1 subunits is reduced, the shift in the V1/2 of activation becomes smaller. At the single-channel level, a similar graded change in subconductance occupancy and channel activity is seen in response to 8-CPT-cAMP: the less E1, the smaller the response. However, both constructs show a significant reduction of a similar magnitude in the first latency to opening (EQQ control: 0.90 s ± 0.07 to 0.71 s ± 0.06, p-value: 0.0032 and EQQQQ control: 0.94 s ± 0.09 to 0.56 s ± 0.07, p-value < 0.0001). This suggests that there are both E1-dependent and E1-independent effects of 8-CPT-cAMP on the channel.
Collapse
Affiliation(s)
- Emely Thompson
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jodene Eldstrom
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Maartje Westhoff
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Donald McAfee
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - David Fedida
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada.
| |
Collapse
|
23
|
Hagmeyer L, Haidl P, Westhoff M, Schulte W, Randerath W, Lorenz J. Erfassung der pneumologisch-fachärztlichen Versorgungsstrukturen für Patienten mit interstitiellen Lungenerkrankungen in Nordrhein-Westfalen. Pneumologie 2018; 72:523-530. [DOI: 10.1055/a-0582-4098] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/16/2022]
Abstract
Zusammenfassung
Ziel der Studie Erfassung der Versorgungsrealität von interstitiellen Lungenerkrankungen (ILD) in Nordrhein-Westfalen.
Methodik Die Westdeutsche Gesellschaft für Pneumologie erfasste ILD-Schwerpunktstandorte mittels postalischer Abfrage. Struktur- und Prozessqualität wurden in einem Fragebogen evaluiert.
Ergebnisse 49 Standorte wurden registriert, 46 stellten ihre Standortdaten zur Verfügung (15 Facharztpraxen, 34 pneumologische Krankenhausabteilungen). Im Median werden in den Praxen im Jahr 360 ILD-Patienten gesehen (26 % Erstdiagnosen), in den Krankenhäusern 105 ILD-Patienten (63 % Erstdiagnosen). 10 Standorte stellen über 100 ILD-Erstdiagnosen pro Jahr. Die Praxen berichten im Median 50 Bronchoskopien im Jahr, die Krankenhäuser im Median 1396. 78 % der Standorte partizipieren an einer interdisziplinären ILD-Fallkonferenz.
Schlussfolgerung In Nordrhein-Westfalen existieren mehrere ILD-Versorgungsstandorte mit hoher Expertise. Ambulant erfolgt v. a. das Monitoring von ILD-Patienten, stationär werden eher komplexe ILD-Erstabklärungen oder ungewöhnliche Verläufe betreut. Standorte mit einem realen regionalen ILD-Versorgungsauftrag sollten in ihrer Weiterentwicklung gefördert werden.
Collapse
Affiliation(s)
- L. Hagmeyer
- Krankenhaus Bethanien Solingen, Klinik für Pneumologie und Allergologie, Zentrum für Schlaf- und Beatmungsmedizin, Solingen
| | - P. Haidl
- Fachkrankenhaus Kloster Grafschaft, Abteilung Pneumologie II, Schmallenberg-Grafschaft
| | - M. Westhoff
- Lungenklinik Hemer, Zentrum für Pneumologie und Thoraxchirurgie, Hemer
| | - W. Schulte
- St. Marienhospital der GFO Kliniken Bonn, Lungenzentrum, Pneumologie & Allergologie, Bonn
| | - W. Randerath
- Krankenhaus Bethanien Solingen, Klinik für Pneumologie und Allergologie, Zentrum für Schlaf- und Beatmungsmedizin, Solingen
| | - J. Lorenz
- Westdeutsche Gesellschaft für Pneumologie, Vorstand
| |
Collapse
|
24
|
Westhoff M, Kreppein U. Ouctome nach Beatmung bei akuter Exazerbation interstitieller Lungenerkrankungen. Pneumologie 2018. [DOI: 10.1055/s-0037-1619309] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- M Westhoff
- Abteilung Pneumologie, Lungenklinik Hemer
| | | |
Collapse
|
25
|
Westhoff M, Litterst P. Spiroergometrie bei CPFE. Pneumologie 2018. [DOI: 10.1055/s-0037-1619132] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/28/2022]
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Universität Witten-Herdecke
| | | |
Collapse
|
26
|
Westhoff M, Murray CI, Eldstrom J, Fedida D. Photo-Cross-Linking of I Ks Demonstrates State-Dependent Interactions between KCNE1 and KCNQ1. Biophys J 2017; 113:415-425. [PMID: 28746852 DOI: 10.1016/j.bpj.2017.06.005] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/02/2016] [Revised: 05/26/2017] [Accepted: 06/02/2017] [Indexed: 01/09/2023] Open
Abstract
The slow delayed rectifier potassium current (IKs) is a key repolarizing current during the cardiac action potential. It consists of four KCNQ1 α-subunits and up to four KCNE1 β-subunits, which are thought to reside within external clefts of the channel. The interaction of KCNE1 with KCNQ1 dramatically delays opening of the channel but the mechanisms by which this occur are not yet fully understood. Here, we have used unnatural amino acid photo-cross-linking to investigate the dynamic interactions that occur between KCNQ1 and KCNE1 during activation gating. The unnatural amino acid p-Benzoylphenylalanine was successfully incorporated into two residues within the transmembrane domain of KCNE1: F56 and F57. UV-induced cross-linking suggested that F56Bpa interacts with KCNQ1 in the open state, whereas F57Bpa interacts predominantly in resting channel conformations. When UV was applied at progressively more depolarized preopen holding potentials, cross-linking of F57Bpa with KCNQ1 was slowed, which indicates that KCNE1 is displaced within the channel's cleft early during activation, or that conformational changes in KCNQ1 alter its interaction with KCNE1. In E1R/R4E KCNQ1, a mutant with constitutively activated voltage sensors, F56Bpa and F57Bpa KCNE1 were cross-linked in open and closed states, respectively, which suggests that their actions are mediated mainly by modulation of KCNQ1 pore function.
Collapse
Affiliation(s)
- Maartje Westhoff
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Christopher I Murray
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - Jodene Eldstrom
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada
| | - David Fedida
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, British Columbia, Canada.
| |
Collapse
|
27
|
Thompson E, Eldstrom J, Westhoff M, McAfee D, Balse E, Fedida D. cAMP-dependent regulation of IKs single-channel kinetics. J Gen Physiol 2017; 149:781-798. [PMID: 28687606 PMCID: PMC5560775 DOI: 10.1085/jgp.201611734] [Citation(s) in RCA: 20] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/01/2016] [Accepted: 06/20/2017] [Indexed: 02/06/2023] Open
Abstract
The delayed potassium rectifier current, IKs , is composed of KCNQ1 and KCNE1 subunits and plays an important role in cardiac action potential repolarization. During β-adrenergic stimulation, 3'-5'-cyclic adenosine monophosphate (cAMP)-dependent protein kinase A (PKA) phosphorylates KCNQ1, producing an increase in IKs current and a shortening of the action potential. Here, using cell-attached macropatches and single-channel recordings, we investigate the microscopic mechanisms underlying the cAMP-dependent increase in IKs current. A membrane-permeable cAMP analog, 8-(4-chlorophenylthio)-cAMP (8-CPT-cAMP), causes a marked leftward shift of the conductance-voltage relation in macropatches, with or without an increase in current size. Single channels exhibit fewer silent sweeps, reduced first latency to opening (control, 1.61 ± 0.13 s; cAMP, 1.06 ± 0.11 s), and increased higher-subconductance-level occupancy in the presence of cAMP. The E160R/R237E and S209F KCNQ1 mutants, which show fixed and enhanced voltage sensor activation, respectively, largely abolish the effect of cAMP. The phosphomimetic KCNQ1 mutations, S27D and S27D/S92D, are much less and not at all responsive, respectively, to the effects of PKA phosphorylation (first latency of S27D + KCNE1 channels: control, 1.81 ± 0.1 s; 8-CPT-cAMP, 1.44 ± 0.1 s, P < 0.05; latency of S27D/S92D + KCNE1: control, 1.62 ± 0.1 s; cAMP, 1.43 ± 0.1 s, nonsignificant). Using total internal reflection fluorescence microscopy, we find no overall increase in surface expression of the channel during exposure to 8-CPT-cAMP. Our data suggest that the cAMP-dependent increase in IKs current is caused by an increase in the likelihood of channel opening, combined with faster openings and greater occupancy of higher subconductance levels, and is mediated by enhanced voltage sensor activation.
Collapse
Affiliation(s)
- Emely Thompson
- Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Jodene Eldstrom
- Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Maartje Westhoff
- Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Donald McAfee
- Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| | - Elise Balse
- Sorbonne Universités, UPMC Univ Paris 06, INSERM, UMR_S 1166, Unité de recherche sur les maladies cardiovasculaires, le métabolisme et la nutrition, Faculté de Médecine, Site Pitié-Salpêtrière, Paris, France
| | - David Fedida
- Department of Anesthesiology, Pharmacology, and Therapeutics, University of British Columbia, Vancouver, BC, Canada
| |
Collapse
|
28
|
Westhoff M, Litterst P, Kirchner G. Pneumocystis jirovecii bei pneumologischen Patienten ohne HIV-Infektion. Pneumologie 2017. [DOI: 10.1055/s-0037-1598567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- M Westhoff
- Lungenklinik Hemer, Klinik für Pneumologie, Schlaf- und Beatmungsmedizin; Universität Witten-Herdecke
| | | | - G Kirchner
- Gemeinschaftspraxis für Laboratoriumsmedizin am Hygiene-Institut
| |
Collapse
|
29
|
Westhoff M, Litterst P. Ventilationsparameter unter Adaptiver Servoventilation – Vergleich von Patienten mit Cheyne-Stokes-Atmung, zentraler und komplexer Schlafapnoe. Pneumologie 2017. [DOI: 10.1055/s-0037-1598286] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/20/2022]
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Universität Witten-Herdecke
| | | |
Collapse
|
30
|
Kreppein U, Litterst P, Westhoff M. [Hypercapnic respiratory failure. Pathophysiology, indications for mechanical ventilation and management]. Med Klin Intensivmed Notfmed 2016; 111:196-201. [PMID: 26902369 DOI: 10.1007/s00063-016-0143-2] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/21/2015] [Accepted: 01/13/2016] [Indexed: 01/04/2023]
Abstract
BACKGROUND Acute hypercapnic respiratory failure is mostly seen in patients with chronic obstructive pulmonary disease (COPD) and obesity hypoventilation syndrome (OHS). Depending on the underlying cause it may be associated with hypoxemic respiratory failure and places high demands on mechanical ventilation. OBJECTIVE Presentation of the current knowledge on indications and management of mechanical ventilation in patients with hypercapnic respiratory failure. MATERIAL AND METHODS Review of the literature. RESULTS Important by the selection of mechanical ventilation procedures is recognition of the predominant pathophysiological component. In hypercapnic respiratory failure with a pH < 7.35 non-invasive ventilation (NIV) is primarily indicated unless there are contraindications. In patients with severe respiratory acidosis NIV requires a skilled and experienced team and close monitoring in order to perceive a failure of NIV. In acute exacerbation of COPD ventilator settings need a long expiration and short inspiration time to avoid further hyperinflation and an increase in intrinsic positive end-expiratory pressure (PEEP). Ventilation must be adapted to the pathophysiological situation in patients with OHS or overlap syndrome. If severe respiratory acidosis and hypercapnia cannot be managed by mechanical ventilation therapy alone extracorporeal venous CO2 removal may be necessary. Reports on this approach in awake patients are available. CONCLUSION The use of NIV is the predominant treatment in patients with hypercapnic respiratory failure but close monitoring is necessary in order not to miss the indications for intubation and invasive ventilation. Methods of extracorporeal CO2 removal especially in awake patients need further evaluation.
Collapse
Affiliation(s)
- U Kreppein
- Abteilung für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Theo-Funccius-Str. 1, 58675, Hemer, Deutschland
| | - P Litterst
- Abteilung für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Theo-Funccius-Str. 1, 58675, Hemer, Deutschland
| | - M Westhoff
- Abteilung für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer, Theo-Funccius-Str. 1, 58675, Hemer, Deutschland. .,Universität Witten/Herdecke, 58448, Witten, Deutschland.
| |
Collapse
|
31
|
Westhoff M, Kreppein U, Holinka G. Riesenaneurysma spurium des linken Vorhofs nach Pneumonektomie. Pneumologie 2016. [DOI: 10.1055/s-0036-1572208] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
|
32
|
Murray CI, Westhoff M, Eldstrom J, Thompson E, Emes R, Fedida D. Unnatural amino acid photo-crosslinking of the IKs channel complex demonstrates a KCNE1:KCNQ1 stoichiometry of up to 4:4. eLife 2016; 5. [PMID: 26802629 PMCID: PMC4807126 DOI: 10.7554/elife.11815] [Citation(s) in RCA: 49] [Impact Index Per Article: 6.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/24/2015] [Accepted: 01/22/2016] [Indexed: 12/20/2022] Open
Abstract
Cardiac repolarization is determined in part by the slow delayed rectifier current (IKs), through the tetrameric voltage-gated ion channel, KCNQ1, and its β-subunit, KCNE1. The stoichiometry between α and β-subunits has been controversial with studies reporting either a strict 2 KCNE1:4 KCNQ1 or a variable ratio up to 4:4. We used IKs fusion proteins linking KCNE1 to one (EQ), two (EQQ) or four (EQQQQ) KCNQ1 subunits, to reproduce compulsory 4:4, 2:4 or 1:4 stoichiometries. Whole cell and single-channel recordings showed EQQ and EQQQQ to have increasingly hyperpolarized activation, reduced conductance, and shorter first latency of opening compared to EQ - all abolished by the addition of KCNE1. As well, using a UV-crosslinking unnatural amino acid in KCNE1, we found EQQQQ and EQQ crosslinking rates to be progressively slowed compared to KCNQ1, which demonstrates that no intrinsic mechanism limits the association of up to four β-subunits within the IKs complex. DOI:http://dx.doi.org/10.7554/eLife.11815.001 The membrane that surrounds heart muscle cells contains specialized channels that can open and close to control the movements of charged ions into and out of the cell. This ion flow generates the electrical signals that stimulate the heart muscle to contract for each heart beat. Different ion channels influence different steps in the initiation and termination of each electrical signal. For example, the IKs ion channel complex helps to return the cell to a resting state so the heart muscle can relax. This allows chambers of the heart to fill with blood before the next beat pumps blood throughout the body. Mutations that affect IKs cause serious heart conditions that affect heart rhythm, such as Long QT Syndrome. The IKs complex consists of channels that are each made of four copies of a protein called KCNQ1, through which potassium ions exit the cell. This channel opens in response to changes in the voltage across the cell membrane (known as the “membrane potential”). A small protein subunit called KCNE1 also makes up part of the complex, but it was not clear how many KCNE1 molecules combine with KCNQ1 to form a working channel complex. Several previous studies have reported two different results: that the KCNQ1 channel complex only exists with two KCNE1 molecules, or that the association is flexible, allowing the complex to contain up to four KCNE1 subunits. Murray et al. have now constructed IKs fusion channels out of different numbers of KCNQ1 and KCNE1 molecules to investigate how different KCNQ1:KCNE1 ratios affect how the channel works. Measuring the responses of these modified channels in mammalian cells revealed that channels with four KCNE1 subunits conducted ions better than channels with one or two KCNE1s. The channels containing fewer KCNE1s also opened at lower membrane potentials and after a shorter delay following a change in the membrane potential. Further experiments also supported the theory that up to four independent KCNE1 subunits may be easily added to the IKs ion channel complex. Murray et al. suggest that by being able to form channel complexes containing different numbers of KCNE1 subunits, cells can more flexibly control the rate at which ions flow out of the heart cells to tune the electrical signals that trigger each heart beat. The next challenges will be to determine the composition of the IKs channel complex in adult heart cells and to investigate how the complex might change with disease. DOI:http://dx.doi.org/10.7554/eLife.11815.002
Collapse
Affiliation(s)
- Christopher I Murray
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Maartje Westhoff
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Jodene Eldstrom
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Emely Thompson
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - Robert Emes
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| | - David Fedida
- Department of Anesthesiology, Pharmacology and Therapeutics, University of British Columbia, Vancouver, Canada
| |
Collapse
|
33
|
Westhoff M, Schönhofer B, Neumann P, Bickenbach J, Barchfeld T, Becker H, Dubb R, Fuchs H, Heppner HJ, Janssens U, Jehser T, Karg O, Kilger E, Köhler HD, Köhnlein T, Max M, Meyer FJ, Müllges W, Putensen C, Schreiter D, Storre JH, Windisch W. [Noninvasive Mechanical Ventilation in Acute Respiratory Failure]. Pneumologie 2015; 69:719-756. [PMID: 26649598 DOI: 10.1055/s-0034-1393309] [Citation(s) in RCA: 50] [Impact Index Per Article: 5.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022]
Abstract
The non-invasive ventilation (NIV) is widespread in the clinical medicine and has attained meanwhile a high value in the clinical daily routine. The application of NIV reduces the length of ICU stay and hospitalization as well as mortality of patients with hypercapnic acute respiratory failure. Patients with acute respiratory failure in context of a cardiopulmonary edema should be treated in addition to necessary cardiological interventions with continuous positive airway pressure (CPAP) or NIV. In case of other forms of acute hypoxaemic respiratory failure it is recommended the application of NIV to be limited to mild forms of ARDS as the application of NIV in severe forms of ARDS is associated with higher rates of treatment failure and mortality. In weaning process from invasive ventilation the NIV reduces the risk of reintubation essentially in hypercapnic patients. A delayed intubation of patients with NIV failure leads to an increase of mortality and should therefore be avoided. With appropriate monitoring in intensive care NIV can also be successfully applied in pediatric patients with acute respiratory insufficiency. Furthermore NIV can be useful within palliative care for reduction of dyspnea and improving quality of life. The aim of the guideline update is, taking into account the growing scientific evidence, to outline the advantages as well as the limitations of NIV in the treatment of acute respiratory failure in daily clinical practice and in different indications.
Collapse
Affiliation(s)
| | | | - P Neumann
- Evangelisches Krankenhaus Göttingen-Weende gGmbH, Göttingen
| | | | - T Barchfeld
- Knappschaftskrankenhaus Dortmund, Klinikum Westfalen GmbH, Dortmund
| | - H Becker
- Asklepios Klinikum Barmbeck, Hamburg
| | - R Dubb
- Klinikum Stuttgart, Katharinenhospital, Stuttgart
| | - H Fuchs
- Uniklinik Freiburg, Freiburg
| | - H J Heppner
- Geriatrische Klinik, HELIOS Klinikum Schwelm, Schwelm
| | - U Janssens
- St.- Antonius-Hospital Eschweiler, Akad. Lehrkrankenhaus der RWTH Aachen, Eschweiler
| | - T Jehser
- Gemeinschaftskrankenhaus Havelhöhe, Berlin
| | - O Karg
- Asklepios Fachkliniken München-Gauting, Gauting
| | - E Kilger
- Ludwig-Maximilians-Universität, München
| | - H-D Köhler
- Fachkrankenhaus Klostergrafschaft, Schmallenberg
| | | | - M Max
- Centre Hospitalier de Luxembourg, Luxemburg
| | - F J Meyer
- Klinikum Harlaching, Städtisches Klinikum München, München
| | - W Müllges
- Universitätsklinikum Würzburg, Würzburg
| | | | - D Schreiter
- Universitätsklinikum Carl Gustav Carus an der Technischen Universität Dresden, Dresden
| | - J H Storre
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Köln
| | - W Windisch
- Lungenklinik, Kliniken der Stadt Köln gGmbH, Köln
| |
Collapse
|
34
|
Schönhofer B, Geiseler J, Dellweg D, Moerer O, Barchfeld T, Fuchs H, Karg O, Rosseau S, Sitter H, Weber-Carstens S, Westhoff M, Windisch W. S2k-Guideline "Prolonged Weaning". Pneumologie 2015; 69:595-607. [PMID: 26444135 DOI: 10.1055/s-0034-1392809] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
Abstract
All mechanically ventilated patients must be weaned from the ventilator at some stage. According to an International Consensus Conference the criteria for "prolonged weaning" are fulfilled if patients fail at least 3 weaning attempts (i. e. spontaneous breathing trial, SBT) or require more than 7 days of weaning after the first SBT. This occurs in about 15 - 20 % of patients.Because of the growing number of patients requiring prolonged weaning a German guideline on prolonged weaning has been developed. It is an initiative of the German Respiratory Society (Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin e. V., DGP) in cooperation with other societies (see acknowledgement) engaged in the field chaired by the Association of Scientific and Medical Societies in Germany (Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften, AWMF).This guideline deals with the definition, epidemiology, weaning categories, underlying pathophysiology, therapeutic strategies, the weaning unit, transition to out-of-hospital ventilation and therapeutic recommendations for end of life care. This short version summarises recommendations on prolonged weaning from the German guideline.
Collapse
Affiliation(s)
- B Schönhofer
- Prof. Dr. Bernd Schönhofer, Pneumologie, Internistische Intensivmedizin und Schlafmedizin KRH Klinikum Siloah-Oststadt-Heidehaus, Stadionbrücke 4, 30459 Hannover; E-Mail:
| | - J Geiseler
- Dr. Jens Geiseler, Asklepios Fachkliniken München-Gauting, Klinik für Intensiv-, Schlaf- und Beatmungsmedizin, Robert-Koch-Allee 2, 82131 Gauting; E-Mail:
| | - D Dellweg
- PD Dr. Dominic Dellweg, Fachkrankenhaus Kloster Grafschaft, Annostraße 1, 57392 Schmallenberg; E-Mail:
| | - O Moerer
- Prof. Dr. Onnen Moerer, Universitätsmedizin Göttingen, Klinik für Anästhesiologie, Zentrum Anästhesiologie, Rettungs- und Intensivmedizin, Robert-Koch Straße 40, 37075 Göttingen; E-Mail:
| | - T Barchfeld
- Dr. Thomas Barchfeld, Klinikum Westfalen GmbH, Knappschaftskrankenhaus Dortmund, Klinik für Pneumologie, Intensivmedizin und Schlafmedizin, Am Knappschaftskrankenhaus 1, 44309 Dortmund; E-Mail:
| | - H Fuchs
- Dr. Hans Fuchs, Zentrum für Kinder- und Jugendmedizin, Universitätsklinikum Freiburg, Mathildenstraße 1, 79106 Freiburg; E-Mail:
| | - O Karg
- Dr. Ortrud Karg, Asklepios Fachkliniken München-Gauting, Leitung Medizinische Krankenhausorganisation, Robert-Koch-Allee 2, 82131 Gauting; E-Mail:
| | - S Rosseau
- Dr. Simone Rosseau, Charité Universitätsmedizin Berlin, Charité - Campus Mitte, Medizinische Klinik mit Schwerpunkt Infektiologie und Pneumologie, Charitéplatz 1, 10117 Berlin; E-Mail:
| | - H Sitter
- PD Dr. Helmut Sitter, Philips-Universität Marburg, Institut für Chirurgische Forschung, Baldingerstraße, 35033 Marburg; E-Mail:
| | - S Weber-Carstens
- PD Dr. Steffen Weber-Carstens, Charité Universitätsmedizin Berlin, Klinik für Anästhesiologie mit Schwerpunkt operative Intensivmedizin, Campus Virchow-Klinikum, Augustenburger Platz 1, 13353 Berlin; E-Mail:
| | - M Westhoff
- Dr. Michael Westhoff, Lungenklinik Hemer, Klinik Pneumologie I, Theo-Funccius-Straße 1, 58675 Hemer; E-Mail:
| | - W Windisch
- Prof. Dr. Wolfram Windisch, Kliniken der Stadt Köln gGmbH, Abteilung Pneumologie, Ostmerheimer Straße 200, 51109 Köln; E-Mail:
| |
Collapse
|
35
|
Westhoff M, Brune J, Bach P. Visualisierung der Atemmuskelaktivität bei schwerer COPD mittels PET-CT. Pneumologie 2015. [DOI: 10.1055/s-0035-1544716] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
36
|
Litterst P, Westhoff M. Pneumonie: Kokken oder Koks? Pneumologie 2015. [DOI: 10.1055/s-0035-1544749] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
37
|
Westhoff M, Bach P. PET-CT bei Lungenfibrose. Pneumologie 2015. [DOI: 10.1055/s-0035-1544835] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
|
38
|
Abstract
Benign lesions as pulmonary hyalinizing granuloma may mimic a malign disease. A 63-year old patient complained dyspnea and a weight loss of 30 kg. CT-thorax scans showed a destructive and infiltrative pulmonary process with pleural thickening. Histologic examination of transbronchial and transthoracic biopsies as well as of biopsies taken by minithoracotomy was not conclusive. Due to further progression the patient underwent a left-sided pleuropneumonectomy despite a VO2 peak of 9 ml/kg/min. Histology revealed DIP-like infiltrations, a histiocytic reaction and hyaline granulomas. Among less than 100 published cases of pulmonary hyaline granuloma a comparable rapid progression with a total functional loss of the affected lung is not reported. Mostly hyalinizing granuloma presents with infiltrations, which may mimic lung cancer, or nodular lesions, partly with cavitations or calcifications. The etiology is unknown, a persistent immunologic response to an antigenic stimulus is discussed. Associations with infections, lymphomas, amyloidosis or IgG4-related disease are reported. Some cases have features of multifocal fibrosis. In the case reported none of these associations could be found. The prognosis of pulmonary hyaline granuloma is regarded as benign. There is no effective treatment yet. Once the diagnosis has been established a conservative approach as well as a resection of nodules and a therapeutic attempt with steroids are an option. Extensive resections as pleuropneumonectomy are an exception.
Collapse
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer
| | - P Litterst
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer
| | - M Albert
- Klinik für Thoraxchirurgie - Lungenklinik Hemer
| | - B Welim
- Institut für Pathologie, Hemer
| |
Collapse
|
39
|
Westhoff M. [Acute on chronic respiratory failure in interstitial pneumonias]. Med Klin Intensivmed Notfmed 2014; 110:188-96. [PMID: 25125234 DOI: 10.1007/s00063-014-0388-6] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/31/2014] [Revised: 03/20/2014] [Accepted: 05/11/2014] [Indexed: 12/11/2022]
Abstract
BACKGROUND Acute exacerbations of idiopathic interstitial pneumonias and exacerbations of pleuropulmonary disease in connective tissue diseases are associated with a high mortality. DIAGNOSTIC PROCEDURES They have to be differentiated from respiratory failure in patients with interstitial lung disease as a result of infections, pulmonary embolism, cardiac failure and drug toxicity, because the latter can be treated causally. The extent and the invasivity of diagnostic procedures have to be adopted to the patient's situation. A rapid diagnosis is important in order to initiate therapies (antibiotics, anticoagulation, immunosuppression) in treatable causes of exacerbations. IMPORTANCE OF VENTILATION The prognosis for patients who are under invasive mechanical ventilation in acute exacerbations of interstitial lung disease is poor. Especially in acute exacerbations of idiopathic pulmonary fibrosis (IPF), there is no general recommendation for either invasive or for noninvasive ventilation. In acute exacerbations of other subtypes of interstitial pneumonia, either idiopathic or as a pulmonary manifestation of connective tissue disease, and in all secondary exacerbations of idiopathic interstitial pneumonias which offer further treatment options, the decision about mechanical ventilation requires a differentiated assessment. LUNG TRANSPLANTATION In younger patients with interstitial lung disease and a progressive disease, indication for lung transplantation should be made early and before an exacerbation. If patients listed for lung transplantation experience an acute exacerbation, bridging-to-transplant has to be discussed with the transplant unit. In cases without further causal treatment options palliative care must be initiated.
Collapse
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Schlaf- und Beatmungsmedizin, Lungenklinik Hemer - Zentrum für Pneumologie und Thoraxchirurgie, Theo-Funccius-Str. 1, 58675, Hemer, Deutschland,
| |
Collapse
|
40
|
Westhoff M, Kreppein U, Gerke B, Sträter J, Behl L, Espinoza S, Schaper A, Kemmer HP. Tätigkeitsanalyse auf einer Weaningstation – Ergebnisse einer Pilotstudie. Pneumologie 2014. [DOI: 10.1055/s-0034-1367806] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
41
|
Westhoff M, Litterst P. OSAS und nicht-erholsamer Schlaf durch das Interface. Pneumologie 2014. [DOI: 10.1055/s-0034-1367962] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
42
|
Westhoff M, Litterst P, Albert M, Welim B. Hyaline Granulomatose der Lunge. Pneumologie 2014. [DOI: 10.1055/s-0034-1368005] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
|
43
|
Schönhofer B, Geiseler J, Dellweg D, Moerer O, Barchfeld T, Fuchs H, Karg O, Rosseau S, Sitter H, Weber-Carstens S, Westhoff M, Windisch W. [Prolonged weaning: S2k-guideline published by the German Respiratory Society]. Pneumologie 2014; 68:19-75. [PMID: 24431072 DOI: 10.1055/s-0033-1359038] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Mechanical ventilation (MV) is an essential part of modern intensive care medicine. MV is performed in patients with severe respiratory failure caused by insufficiency of the respiratory muscles and/or lung parenchymal disease when/after other treatments, i. e. oxygen, body position, secretion management, medication or non invasive ventilation have failed.In the majority of ICU patients weaning is routine and does not present any problems. Nevertheless 40-50 % of the time during mechanical ventilation is spent on weaning. About 20 % of patients need continued MV despite resolution of the conditions which originally precipitated the need for MV.There maybe a combination of reasons; chronic lung disease, comorbidities, age and conditions acquired in ICU (critical care neuromyopathy, psychological problems). According to an International Consensus Conference the criteria for "prolonged weaning" are fulfilled if patients fail at least three weaning attempts or require more than 7 days of weaning after the first spontaneous breathing trial. Prolonged weaning is a challenge. An inter- and multi-disciplinary approach is essential for weaning success. Complex, difficult to wean patients who fulfill the criteria for "prolonged weaning" can still be successfully weaned in specialised weaning units in about 50% of cases.In patients with unsuccessful weaning, invasive mechanical ventilation has to be arranged either at home or in a long term care facility.This S2-guideline was developed because of the growing number of patients requiring prolonged weaning. It is an initiative of the German Respiratory Society (Deutsche Gesellschaft für Pneumologie und Beatmungsmedizin e. V., DGP) in cooperation with other societies engaged in the field.The guideline is based on a systematic literature review of other guidelines, the Cochrane Library and PubMed.The consensus project was chaired by the Association of Scientific Medical Societies in Germany (Arbeitsgemeinschaft der Wissenschaftlichen Medizinischen Fachgesellschaften, AWMF) based on a formal interdisciplinary process applying the Delphi-concept. The guideline covers the following topics: Definitions, epidemiology, weaning categories, pathophysiology, the spectrum of treatment strategies, the weaning unit, discharge from hospital on MV and recommendations for end of life decisions. Special issues relating to paediatric patients were considered at the end of each chapter.The target audience for this guideline are intensivists, pneumologists, anesthesiologists, internists, cardiologists, surgeons, neurologists, pediatricians, geriatricians, palliative care clinicians, nurses, physiotherapists, respiratory therapists, ventilator manufacturers.The aim of the guideline is to disseminate current knowledge about prolonged weaning to all interested parties. Because there is a lack of clinical research data in this field the guideline is mainly based on expert opinion.
Collapse
|
44
|
Schönhofer B, Geiseler J, Dellweg D, Moerer O, Barchfeld T, Fuchs H, Karg O, Rosseau S, Sitter H, Weber-Carstens S, Westhoff M, Windisch W. Prolongiertes Weaning. Pneumologie 2014. [DOI: 10.1055/s-0033-1359038 10.1055/s-0033-1359038] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
|
45
|
Abstract
More and more differences in lung cancer are being detected between men and women. Lung cancer, at the beginning of the last century a rare disease in women, has a growing incidence in women, in particular in young females. Lung cancer is a leading cause of cancer death in women in developed countries with different histological types and adenocarcinomas are more frequent in women than in men. Cigarette smoking is the most prevalent cause of lung cancer in women, in addition susceptibility to carcinogens may differ between the sexes. As more non-smoking women than men develop lung cancer, it is likely that they are exposed to excessive environmental carcinogens such as second-hand-smoking, in-house-radon or cooking fumes. Furthermore, genetic and hormonal influences play a role in lung cancer etiology for women. Taken together, women have a better overall survival than men with lung cancer. Differences in molecular susceptibility patterns are observed between men and women, and show that molecular targets such as EGFR or ALK more frequent in women.
Collapse
Affiliation(s)
- M Serke
- Pneumologie, Lungenklinik Hemer, Hemer, Germany.
| | | | | |
Collapse
|
46
|
Westhoff M. [Implementation of the German S3-Guideline of non-invasive ventilation for acute respiratory failure in daily practice]. Dtsch Med Wochenschr 2013; 138:825-30. [PMID: 23589044 DOI: 10.1055/s-0033-1343101] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
BACKGROUND AND OBJECTIVE Application of non-invasive ventilation (NIV) in acute respiratory failure (ARF) since publication of the German S3 guideline in 2008. METHODS A questionnaire was sent to 145 regional hospitals representing 99 ICUs, asking for: responsibility for NIV, number of ICU-beds, awareness of the guideline and the detailed recommendations, its implementation, use of ventilators and interfaces, location of NIV application. RESULTS The response rate in relation to hospitals was 43.5%, 63 questionnaires were sent back (30 by internists, 33 by anesthesiologists). 97% of the participants reported to know the guideline; 20 (67%) of the internists and 16 (48,5%) of the anaesthesiologists who answered are aware of the detailed recommendations. 40 of 63 departments (63,5%) reported an increase of NIV since publication of the guideline. 22 of 33 (66%) anaesthesiologists and 18 of 30 (60%) internists reported to apply NIV in all forms of ARF. The others reported a differentiated application, mainly in pulmonary edema and hypercapnic respiratory failure, whereas NIV was rarely used in non-cardiac hypoxemic ARF. 92% of the participants used the guideline in decision-finding for NIV. Their decision was additionally influenced by clinical experience. In all clinics NIV took place on the ICU; furthermore in 6 medical clinics on specialized respiratory units. Mainly ICU-ventilators with NIV mode were used; 38% of the ICUs only held this type of ventilator. In 84 % full-face masks were preferred; 71% of the users only used a single type of mask. CONCLUSION The S3 guideline for NIV in ARF is well-known in intensive care in Germany, but not all are aware of the detailed re-commendations. The use of NIV in ARF has increased since publication of the guideline but nearly always follows additional clinical assessment in decision-making. In one third it is restricted to special indications, with very limited application in non-cardiac hypoxemic ARF. Full-face masks are preferred according to the guideline. All ICUs, that participated in the survey, hold ventilators for NIV.
Collapse
Affiliation(s)
- M Westhoff
- Klinik für Pneumologie, Intensiv- und Schlafmedizin, Lungenklinik Hemer.
| |
Collapse
|
47
|
Westhoff M. Implementierung der S3-Leitlinie zur nicht-invasiven Beatmung (NIV) bei akuter respiratorischer Insuffizienz (ARI) im klinischen Alltag - Ergebnisse einer regionalen Befragung. Pneumologie 2013. [DOI: 10.1055/s-0033-1334533] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
48
|
Westhoff M, Kempa AT, Brune J. Sarkoidose unter TNF-alpha Therapie. Pneumologie 2013. [DOI: 10.1055/s-0033-1334542] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
49
|
Westhoff M, Albert M, Holinka G, Waltert M, Krakor R. Aorto-aortaler Bypass zur Therapie des Postpneumonektomie-Syndroms. Pneumologie 2013. [DOI: 10.1055/s-0033-1334636] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
50
|
Westhoff M, Rühle K, Greiwing A, Schomaker R, Eschenbacher H, Siepmann M, Lehnigk B. Ventilatorische und metabolische (Laktat-)Schwellen. Dtsch Med Wochenschr 2013; 138:275-80. [DOI: 10.1055/s-0032-1332843] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
| | | | - A. Greiwing
- ZfS - Zentrum für Sportmedizin GmbH, Münster
| | | | | | | | - B. Lehnigk
- Krankenhaus Großhansdorf, Zentrum für Pneumologie und Thoraxchirurgie
| |
Collapse
|