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Fendrich V, Zahn A. [Localization diagnostics and operative strategy for the first intervention in sporadic primary hyperparathyroidism]. Chirurgie (Heidelb) 2023:10.1007/s00104-023-01868-z. [PMID: 37121961 DOI: 10.1007/s00104-023-01868-z] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 03/21/2023] [Indexed: 05/02/2023]
Abstract
Primary hyperparathyroidism (pHPT) is a frequent endocrine disease, the incidence of which is clearly increasing. In addition to the classical symptoms of bone pain, osteoporosis and renal calculi, nonspecific complaints, such as listlessness and exhaustion, anxiety states and depressive symptoms also often occur. The diagnosis is simple and is carried out by determination of calcium and parathormone (PTH) serum levels. The majority of parathyroid adenomas can be localized by ultrasound and Tc-99m-MIBI scintigraphy. The indications for surgery can normally already be identified by the laboratory biochemical detection. Surgery is the only curative treatment of pHPT and is normally successful. In addition to bilateral exploration, a focused parathyroidectomy can be planned. The success of surgery can be intraoperatively documented by the determination of intraoperative Quick PTH (IOPTH).
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Affiliation(s)
- V Fendrich
- Klinik für Endokrine Chirurgie, Schön Klinik Hamburg Eilbek, Hamburg, Deutschland.
| | - A Zahn
- Klinik für Endokrine Chirurgie, Schön Klinik Hamburg Eilbek, Hamburg, Deutschland
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Fendrich V, Zahn A. [Hereditary medullary thyroid cancer]. Chirurgie (Heidelb) 2023; 94:393-399. [PMID: 36799965 DOI: 10.1007/s00104-023-01824-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] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/19/2023] [Indexed: 02/18/2023]
Abstract
Parafollicular C cells progress via C cell hyperplasia to medullary thyroid cancer (MTC), which can be present even in the first years of life in multiple endocrine neoplasia (MEN) type 2A and 2B patients. Basal calcitonin and carcinoembryonic antigen (CEA) are useful tumor markers for the diagnosis and monitoring. The prognosis depends on the stage when the disease is diagnosed and there is a good genotype-phenotype correlation with the RET proto-oncogene, which can be used for estimation of the risk. The risk-stratified prophylactic thyroidectomy plays a decisive role in the prognosis of known gene mutation carriers.
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Affiliation(s)
- V Fendrich
- Klinik für Endokrine Chirurgie, Schön Klinik Eilbek, Dehnhaide 120, 22081, Hamburg, Deutschland.
| | - A Zahn
- Klinik für Endokrine Chirurgie, Schön Klinik Eilbek, Dehnhaide 120, 22081, Hamburg, Deutschland
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Sehouli J, Oskay-Öczelik G, Zocholl D, Klemt AS, Bangemann N, Albrecht O, Strittmatter HJ, Wimberger P, Kaczerowsky A, Lorenz R, Ruhwedel W, Fehm T, Zahn A, Tome O, Markert M, Hager D, Zorr A, Keller M, Rittmeister H, Grabowski J. 1573P Developing a patient-related predictive model for the occurrence of CINV (NOGGO-EMRISK trial): Prospective, multicentre study in Germany. Ann Oncol 2022. [DOI: 10.1016/j.annonc.2022.07.1666] [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: 11/01/2022] Open
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Neumann M, Ruppel E, Unger S, Zahn A, Ludwig-Peitsch WK. Kombinierte Immuncheckpoint-Inhibition bei inoperablem Gingivamelanom. Laryngorhinootologie 2020; 99:239-242. [DOI: 10.1055/a-1089-3956] [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: 10/24/2022]
Affiliation(s)
- M. Neumann
- Klinik für Dermatologie und Phlebologie, Vivantes-Klinikum im Friedrichshain, Berlin
| | - E. Ruppel
- Klinik für Dermatologie und Phlebologie, Vivantes-Klinikum im Friedrichshain, Berlin
| | - S. Unger
- Klinik für Dermatologie und Phlebologie, Vivantes-Klinikum im Friedrichshain, Berlin
| | - A. Zahn
- Klinik für Dermatologie und Phlebologie, Vivantes-Klinikum im Friedrichshain, Berlin
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Neumann M, Ruppel E, Unger S, Zahn A, Ludwig-Peitsch W. Kombinierte Immuncheckpoint-Inhibition bei inoperablem Gingivamelanom. Akt Dermatol 2019. [DOI: 10.1055/a-0828-3546] [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: 10/27/2022]
Abstract
ZusammenfassungSchleimhautmelanome sind seltene Formen von Melanomen mit einer ungünstigen Prognose. Bei Fehlen von therapierelevanten Mutationen und Inoperabilität stellt die Therapie mit Immuncheckpoint-Inhibitoren eine aussichtsreiche Option dar. Die Kombination aus dem PD-1-Antikörper Nivolumab und dem CTLA4-Antikörper Ipilimumab ist effektiver, jedoch auch erheblich toxischer als die Monotherapie mit PD-1-Antikörpern. Wir berichten über eine 57-jährige Patientin mit einem lymphogen metastasierten inoperablen Gingivamelanom im Stadium IIID, die mit einer Kombination aus Nivolumab und Ipilimumab behandelt wurde und hierunter multiple autoimmunvermittelte Nebenwirkungen einschließlich eines Schubs einer rheumatoiden Arthritis, einer Autoimmunkolitis, einer Autoimmunthyreoiditis und einer Autoimmunhepatitis entwickelte. Diese konnten mithilfe von systemischen Steroiden und symptomatischer Therapie beherrscht werden und es konnte eine anhaltende partielle Remission bei guter Lebensqualität erzielt werden. Unser Fall liefert ein Beispiel für den erfolgreichen Einsatz von Immuncheckpoint-Inhibitoren bei seltenen Melanom-Entitäten, veranschaulicht jedoch auch die Bedeutung von intensivem Monitoring besonders bei Patienten mit zugrunde liegenden Autoimmunerkrankungen.
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Affiliation(s)
- M. Neumann
- Klinik für Dermatologie und Phlebologie, Vivantes Klinikum im Friedrichshain, Berlin
| | - E. Ruppel
- Klinik für Dermatologie und Phlebologie, Vivantes Klinikum im Friedrichshain, Berlin
| | - S. Unger
- Klinik für Dermatologie und Phlebologie, Vivantes Klinikum im Friedrichshain, Berlin
| | - A. Zahn
- Klinik für Dermatologie und Phlebologie, Vivantes Klinikum im Friedrichshain, Berlin
| | - W. Ludwig-Peitsch
- Klinik für Dermatologie und Phlebologie, Vivantes Klinikum im Friedrichshain, Berlin
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Lelieveld J, Bourtsoukidis E, Brühl C, Fischer H, Fuchs H, Harder H, Hofzumahaus A, Holland F, Marno D, Neumaier M, Pozzer A, Schlager H, Williams J, Zahn A, Ziereis H. The South Asian monsoon-pollution pump and purifier. Science 2018; 361:270-273. [PMID: 29903882 DOI: 10.1126/science.aar2501] [Citation(s) in RCA: 20] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 05/30/2018] [Indexed: 11/02/2022]
Abstract
Air pollution is growing fastest in monsoon-affected South Asia. During the dry winter monsoon, the fumes disperse toward the Indian Ocean, creating a vast pollution haze, but their fate during the wet summer monsoon has been unclear. We performed atmospheric chemistry measurements by aircraft in the Oxidation Mechanism Observations campaign, sampling the summer monsoon outflow in the upper troposphere between the Mediterranean and the Indian Ocean. The measurements, supported by model calculations, show that the monsoon sustains a remarkably efficient cleansing mechanism by which contaminants are rapidly oxidized and deposited to Earth's surface. However, some pollutants are lofted above the monsoon clouds and chemically processed in a reactive reservoir before being redistributed globally, including to the stratosphere.
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Affiliation(s)
- J Lelieveld
- Max Planck Institute for Chemistry, 55128 Mainz, Germany. .,The Cyprus Institute, 1645 Nicosia, Cyprus
| | | | - C Brühl
- Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - H Fischer
- Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - H Fuchs
- Institute for Energy and Climate Research, Research Center Jülich, 52425 Jülich, Germany
| | - H Harder
- Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - A Hofzumahaus
- Institute for Energy and Climate Research, Research Center Jülich, 52425 Jülich, Germany
| | - F Holland
- Institute for Energy and Climate Research, Research Center Jülich, 52425 Jülich, Germany
| | - D Marno
- Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - M Neumaier
- Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - A Pozzer
- Max Planck Institute for Chemistry, 55128 Mainz, Germany
| | - H Schlager
- Institute of Atmospheric Physics, Germany Aerospace Center, 82234 Oberpfaffenhofen, Germany
| | - J Williams
- Max Planck Institute for Chemistry, 55128 Mainz, Germany.,The Cyprus Institute, 1645 Nicosia, Cyprus
| | - A Zahn
- Karlsruhe Institute of Technology, 76021 Karlsruhe, Germany
| | - H Ziereis
- Institute of Atmospheric Physics, Germany Aerospace Center, 82234 Oberpfaffenhofen, Germany
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Zahn A, Lentz E, Hermes B. Minimal-invasive Zystenextirpation bei Steatocystoma multiplex. Akt Dermatol 2015. [DOI: 10.1055/s-0035-1558628] [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: 10/23/2022]
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Steinebrunner N, Sandig C, Sommerer C, Hinz U, Giese T, Stremmel W, Zahn A. Reduced residual gene expression of nuclear factor of activated T cells-regulated genes correlates with the risk of cytomegalovirus infection after liver transplantation. Transpl Infect Dis 2014; 16:379-86. [PMID: 24666466 DOI: 10.1111/tid.12206] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.9] [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: 07/23/2013] [Revised: 10/24/2013] [Accepted: 12/05/2013] [Indexed: 12/31/2022]
Abstract
BACKGROUND Pharmacokinetic monitoring of calcineurin inhibitors (CNIs) is unsatisfactory because, at comparable blood concentrations, side effects vary considerably. We recently confirmed the applicability of a pharmacodynamic (PD) assay that measures the suppression of CNI target genes, specifically the suppression of nuclear factor of activated T cells (NFAT)-regulated genes in liver transplant (LT) recipients. The aim of this prospective study was to prove the clinical reliability of this assay. Therefore, we quantified the residual gene expression (RGE) of NFAT-regulated genes and evaluated the association between the RGE of NFAT-regulated genes and the incidence of cytomegalovirus (CMV) infection. PATIENTS AND METHODS In 20 LT recipients, 10 patients on cyclosporine (CsA) and 10 patients on tacrolimus (Tac) therapy, who presented with CMV infection, the RGEs of interleukin-2, interferon-γ (IFNγ), and granulocyte-monocyte colony-stimulating factor were measured and compared with the RGEs of these cytokines in 40 healthy dose-matched LT controls. RESULTS CsA-treated CMV patients demonstrated a lower RGE of all NFAT-regulated genes compared with controls (30 ± 17 vs. 44 ± 20, P = 0.067). For IFNγ, the level of significance was reached (26 ± 17 vs. 43 ± 17, P = 0.0125). Daily CsA dosage, CsA baseline (C0 ) and 2 h (C2 ) concentrations were comparable (CsA dosage 169 mg/day vs. 165 mg/day; CsA C0 94 μg/L vs. 85 μg/L; CsA C2 389 μg/L vs. 381 μg/L). In addition, Tac-treated CMV patients demonstrated a lower RGE of all NFAT-regulated genes compared with controls (68 ± 25 vs. 84 ± 22, P = 0.0769). Analogous to CsA-treated CMV patients, the level of significance was reached for IFNγ (61 ± 24 vs. 88 ± 29, P = 0.0154). Daily Tac dosage and Tac 1.5 h concentrations (C1.5 ) were comparable in both groups (Tac dosage 4 mg/day vs. 4 mg/day; Tac C1.5 8 μg/L vs. 10 μg/L), whereas Tac C0 concentrations were significantly higher in controls (Tac C0 4 μg/L vs. 6 μg/L, P = 0.0276). CONCLUSION Measuring the RGE of NFAT-regulated genes is appropriate to assess the risk of infections in LT recipients. Measuring the RGE of IFNγ is particularly suitable to assess the risk of CMV infection. PD monitoring of CNIs in LT recipients is an approach to individualize immunosuppression, which may help to reduce infectious complications.
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Affiliation(s)
- N Steinebrunner
- Department of Gastroenterology, University Hospital Heidelberg, Heidelberg, Germany
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Lee E, Zahn A, Baumann K. P-433 - The attitude of psychiatric staff towards religiosity/spirituality of patients and staff's integration of religious/spiritual contents into the therapy. Eur Psychiatry 2012. [DOI: 10.1016/s0924-9338(12)74600-x] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
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Lai SC, Baker AK, Schuck TJ, Slemr F, Brenninkmeijer CAM, van Velthoven P, Oram DE, Zahn A, Ziereis H. Characterization and source regions of 51 high-CO events observed during Civil Aircraft for the Regular Investigation of the Atmosphere Based on an Instrument Container (CARIBIC) flights between south China and the Philippines, 2005–2008. ACTA ACUST UNITED AC 2011. [DOI: 10.1029/2011jd016375] [Citation(s) in RCA: 19] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Lee E, Baumann K, Voderholzer U, Zahn A. P02-273 - Religion in psychiatry? The pilot study in Freiburg, Germany: the meaning of religion / spirituality in psychiatry from staff's perspective. Eur Psychiatry 2010. [DOI: 10.1016/s0924-9338(10)70899-3] [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] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 10/19/2022] Open
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Weigelt A, Hermann M, van Velthoven PFJ, Brenninkmeijer CAM, Schlaf G, Zahn A, Wiedensohler A. Influence of clouds on aerosol particle number concentrations in the upper troposphere. ACTA ACUST UNITED AC 2009. [DOI: 10.1029/2008jd009805] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Weigelt
- Physics Department; Leibniz Institute for Tropospheric Research; Leipzig Germany
| | - M. Hermann
- Physics Department; Leibniz Institute for Tropospheric Research; Leipzig Germany
| | | | | | - G. Schlaf
- Atmospheric Chemistry Division; Max Planck Institute for Chemistry; Mainz Germany
| | - A. Zahn
- Institute for Meteorology and Climate Research; Research Center Karlsruhe; Karlsruhe Germany
| | - A. Wiedensohler
- Physics Department; Leibniz Institute for Tropospheric Research; Leipzig Germany
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Nguyen HN, Martinsson BG, Wagner JB, Carlemalm E, Ebert M, Weinbruch S, Brenninkmeijer CAM, Heintzenberg J, Hermann M, Schuck T, van Velthoven PFJ, Zahn A. Chemical composition and morphology of individual aerosol particles from a CARIBIC flight at 10 km altitude between 50°N and 30°S. ACTA ACUST UNITED AC 2008. [DOI: 10.1029/2008jd009956] [Citation(s) in RCA: 25] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zahn A, Holzhaider J, Kriner E, Maier A, Kayikcioglu A. Foraging activity of Rhinolophus hipposideros on the Island of Herrenchiemsee, Upper Bavaria. Mamm Biol 2008. [DOI: 10.1016/j.mambio.2007.02.005] [Citation(s) in RCA: 16] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Zahn A, Rottenwallner A, Guttinger R. Population density of the greater mouse-eared bat (Myotis myotis), local diet composition and availability of foraging habitats. J Zool (1987) 2006. [DOI: 10.1111/j.1469-7998.2006.00081.x] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Puhan MA, Suarez A, Lo Cascio C, Zahn A, Heitz M, Braendli O. Didgeridoo playing as alternative treatment for obstructive sleep apnoea syndrome: randomised controlled trial. Clin Otolaryngol 2006. [DOI: 10.1111/j.1749-4486.2006.01184.x] [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: 11/27/2022]
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Abstract
BACKGROUND AND AIMS We examined the hypothesis of an anti-inflammatory effect of phosphatidylcholine in ulcerative colitis. METHODS A phase IIA, double blind, randomised, placebo controlled study was performed in 60 patients with chronic active, non steroid dependent, ulcerative colitis, with a clinical activity index (CAI) of > or = 4. Retarded release phosphatidylcholine rich phospholipids and placebo were administered at a dose of 6 g daily over three months. The primary end point was a change in CAI towards clinical remission (CAI < or = 3) or CAI improvement by > or = 50%. Secondary end points included > or = 50% changes in endoscopic activity index (EAI), histology, and quality of life scores. RESULTS Induction of clinical remission (CAI < or = 3) as the primary outcome variable was attained by 16 (53%) patients in the phosphatidylcholine treated group compared with three (10%) in the placebo group (p<0.00001). The rate of clinical remission and CAI improvement was 90% in the phosphatidylcholine group and only 10% in the placebo group. A median drop of seven points in the CAI score (70% improvement) was recorded in the phosphatidylcholine group compared with no change in the placebo group. Secondary end point analysis revealed concomitant drops in EAI and histology scores (p = 0.00016 and p = 0.0067 compared with placebo, respectively). Improvement in quality of life was reported by 16 of 29 evaluated patients in the phosphatidylcholine group compared with two of 30 in the placebo group (p = 0.00005). CONCLUSION Retarded release oral phosphatidylcholine is effective in alleviating inflammatory activity caused by ulcerative colitis.
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Affiliation(s)
- W Stremmel
- Department of Gastroenterology, University Hospital Heidelberg, Im Neuenheimer Feld 410, 69120 Heidelberg, Germany.
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Brenninkmeijer, CAM, Slemr F, Koeppel C, Scharffe DS, Pupek M, Lelieveld J, Crutzen P, Zahn A, Sprung D, Fischer H, Hermann M, Reichelt M, Heintzenberg J, Schlager H, Ziereis H, Schumann U, Dix B, Platt U, Ebinghaus R, Martinsson B, Ciais P, Filippi D, Leuenberger M, Oram D, Penkett S, van Velthoven P, Waibel A. Analyzing atmospheric trace gases and aerosols using passenger aircraft. ACTA ACUST UNITED AC 2005. [DOI: 10.1029/2005eo080001] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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Zahn A, Langhans CD, Hoffner S, Haberkorn U, Rating D, Haass M, Enck P, Stremmel W, Rühl A. Measurement of gastric emptying by 13C-octanoic acid breath test versus scintigraphy in diabetics. Z Gastroenterol 2003; 41:383-90. [PMID: 12772050 DOI: 10.1055/s-2003-39331] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
In this prospective study, we compared the assessment of gastric emptying by the 13C-octanoic acid breath test to gastric emptying scintigraphy in diabetics. We also examined the relationship between gastric emptying parameters and gastric symptoms and cardiovascular autonomic function. The 13C-octanoic acid breath test and scintigraphy were performed simultaneously in 24 diabetics with a solid test meal (1 egg, doubly labelled with 91 mg 13C-octanoic acid and 50 MBq 99mTechnetium-Nanocoll, 60 g white bread, 5 g margarine and 150 ml water). At fifteen-minute intervals, breath samples were taken over 4 hours and examined by mass spectrometry. In parallel, scintigraphy was performed for 2 hours at one minute intervals. Using breath test data, gastric emptying half time (t (1/2) ), lag-phase (t lag ) and gastric emptying coefficient (GEC) were calculated. Subsequently, the correlation of these results with the equivalent data from scintigraphy were determined employing a regression method. To detect a cardiovascular autonomic neuropathy, a 24-h ECG recording was performed. The prevalence of gastrointestinal symptoms in our collective was assessed by a standardized questionnaire. There was a highly significant positive correlation of both 13C-octanoic acid breath test t (1/2) and scintigraphic t (1/2) (r = 0.8257; p < 0.0001) and 13C-octanoic acid breath test t lag and scintigraphic t lag (r = 0.6302; p < 0.001). The sensitivity of the 13C-octanoic acid breath test was 1 and the specificity was 0.73. In our study, there was no significant association of cardiovascular and gastrointestinal autonomic neuropathy. Furthermore, there was no significant relationship between the prevalence of gastrointestinal symptoms and gastric emptying disorders. We conclude that the 13C-octanoic acid breath test represents a suitable method to measure disordered gastric emptying in diabetics due to its highly significant positive correlation to scintigraphy and due to its validity. It is not possible to predict diabetic gastroparesis on the basis of other autonomic function disorders or because of dyspeptic symptoms.
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Affiliation(s)
- A Zahn
- Innere Medizin IV, Medizinische Klinik IV, Klinikum der Universität Heidelberg.
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Hermann M, Heintzenberg J, Wiedensohler A, Zahn A, Heinrich G, Brenninkmeijer CAM. Meridional distributions of aerosol particle number concentrations in the upper troposphere and lower stratosphere obtained by Civil Aircraft for Regular Investigation of the Atmosphere Based on an Instrument Container (CARIBIC) flights. ACTA ACUST UNITED AC 2003. [DOI: 10.1029/2001jd001077] [Citation(s) in RCA: 62] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- M. Hermann
- Institute for Tropospheric Research; Leipzig Germany
| | | | | | - A. Zahn
- Forschungszentrum Karlsruhe/Universität Karlsruhe; Karlsruhe Germany
| | - G. Heinrich
- Forschungszentrum Karlsruhe/Universität Karlsruhe; Karlsruhe Germany
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Zahn A, Brenninkmeijer CAM, Asman WAH, Crutzen PJ, Heinrich G, Fischer H, Cuijpers JWM, van Velthoven PFJ. Budgets of O3and CO in the upper troposphere: CARIBIC passenger aircraft results 1997-2001. ACTA ACUST UNITED AC 2002. [DOI: 10.1029/2001jd001529] [Citation(s) in RCA: 47] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- A. Zahn
- Atmospheric Chemistry Division; Max-Planck-Institute for Chemistry; Mainz Germany
| | | | - W. A. H. Asman
- Atmospheric Chemistry Division; Max-Planck-Institute for Chemistry; Mainz Germany
| | - P. J. Crutzen
- Atmospheric Chemistry Division; Max-Planck-Institute for Chemistry; Mainz Germany
| | - G. Heinrich
- Institute of Meteorology and Climate Research; Forschungszentrum Karlsruhe; Karlsruhe Germany
| | - H. Fischer
- Institute of Meteorology and Climate Research; Forschungszentrum Karlsruhe; Karlsruhe Germany
| | - J. W. M. Cuijpers
- Royal Netherlands Meteorological Institute (KNMI); De Bilt Netherlands
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Zahn A, Brenninkmeijer CAM, Maiss M, Scharffe DH, Crutzen PJ, Hermann M, Heintzenberg J, Wiedensohler A, Güsten H, Heinrich G, Fischer H, Cuijpers JWM, van Velthoven PFJ. Identification of extratropical two-way troposphere-stratosphere mixing based on CARIBIC measurements of O3, CO, and ultrafine particles. ACTA ACUST UNITED AC 2000. [DOI: 10.1029/1999jd900759] [Citation(s) in RCA: 55] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Abstract
Between 1990 and 1997 vegetative endocarditis was diagnosed in six neutered cats (three males, three females) aged between 3 and 9 years. Two cats were purebred (one Persian and one Tonkinese), the remaining four being domestic short haired cats. The diagnosis was made using echocardiography (five cases) or at necropsy (one case). Concurrent involvement of the aortic and mitral valve was noted in four cats, the aortic valve alone was affected in one case, and the tricuspid valve in another. A likely microbiological diagnosis was obtained in three cats: a Bartonella species in two cats based on positive blood culture and a Streptococcus species in one cat based on Gram stain of valve lesions at necropsy. In another cat, Gram-positive cocci were demonstrated histologically in tricuspid vegetations. Invariably, cats had signs of congestive heart failure (left-sided in five cats, right-sided in one), and this was the major factor contributing to mortality in four cases. Signs referable to sepsis were prominent in only two patients. Appropriate medical therapy, consisting of antimicrobials and drugs to treat congestive heart failure, resulted in survival for 5 and 11 months, respectively, in two cases. The other cats died within 2 weeks of diagnosis, including two which received aggressive treatment in hospital.
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Affiliation(s)
- R Malik
- Veterinary Cardiovascular Unit, Department of Veterinary Clinical Sciences, The University of Sydney, New South Wales, Australia
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Schaller RJ, Huff JS, Zahn A. Comparison of a colorimetric end-tidal CO2 detector and an esophageal aspiration device for verifying endotracheal tube placement in the prehospital setting: a six-month experience. Prehosp Disaster Med 1997; 12:57-63. [PMID: 10166376 DOI: 10.1017/s1049023x00037237] [Citation(s) in RCA: 27] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Abstract
INTRODUCTION Hand held, colorimetric, end-tidal CO2 detector devices are being used to verify correct endotracheal tube (ETT) placement. The accuracy of these devices has been questioned in situations of cardiac arrest. The use of the esophageal detector device (EDD) is an easy alternative for detection of ETT placement, and may be more accurate in situations of cardiac arrest. HYPOTHESIS The use of the esophageal aspiration device in comparison with a colorimetric end-tidal CO2 detector is more accurate in detecting proper ETT placement and easier to use in the prehospital setting than is the colorimetric end-tidal CO2 detection device. METHODS This was prospective alternating weeks, 6-month study in a prehospital setting. Participants included all patients older than 18 years who were intubated by the Portsmouth, Virginia Emergency Medical Services (EMS) personnel from 01 July 1993 through 31 December 1993. The aspiration device used, also known as an esophageal detector device (EDD), was a 60 ml, luer-lock syringe attached to a 15 mm ETT adapter. Its efficacy was compared with an already accepted method of ETT position detection, the colorimetric end-tidal CO2 detector. Each device was used on alternating weeks, and correct ETT placement was determined by the receiving emergency department physician using standard techniques. Chi-square analysis and Fisher's Exact test were used to compare parameters, time of device use, and ease of use. Sensitivity and specificity were calculated, and provider preference was assessed using a survey instrument administered following completion of the study. RESULTS There were 49 patients who met the inclusion criteria, but six were excluded because of situational circumstances rendering use of the device a possible compromise of patient care. Twenty-five patients were in the EDD group, and 18 were in the end-tidal CO2 detector group. There was no statistically significant difference detected between groups for the gender ratio, underlying condition, CPR in progress, perceived difficulty of intubation, or percentage of nasotracheal intubation. The EDD was significantly easier to use (p < 0.005). There was no statistically significant difference in time required for use of end-tidal CO2 detector device versus the EDD. The sensitivity and specificity for correct tracheal placement using the EDD was 100%, and the sensitivity for correct tracheal placement using the end-tidal CO2 detector device was 78%. Use of the EDD was preferred over use of the end-tidal CO2 detector device by 75% of participating EMS providers. One case of nasotracheal intubation with an ETT placement above the cords raised the question of accuracy of this device in situations where direct visualization is not utilized. CONCLUSION The EDD was accurate in all cases of orotracheal intubation, and was easier to use than was end-tidal CO2 detector device. It was preferred by 75% of participating EMS providers. In cases in which the ETT may be above the vocal cords, caution must be used with interpreting the results obtained by use of the EDD.
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Affiliation(s)
- R J Schaller
- Department of Emergency Medicine, Eastern Virginia Medical School, Norfolk, USA
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Höbler HJ, Zahn A. Crystallographic investigations of glaucochroite in an fe—mn slag. Cryst Res Technol 1988. [DOI: 10.1002/crat.2170230115] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/06/2022]
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Emmerich H, Zahn A, Schmialek P. [On the activity of some dehydrogenases and transaminases of Tenebrio molitor under the influence of farnesyl methylether]. J Insect Physiol 1965; 11:1161-1168. [PMID: 5829264 DOI: 10.1016/0022-1910(65)90108-3] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/21/2023]
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Zahn A. Eine neue Behandlung des Ulcus ventriculi. Dtsch Med Wochenschr 1924. [DOI: 10.1055/s-0028-1133777] [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: 10/20/2022]
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