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Krejzar Z, Sila D, Waldauf P, Kuriscak E, Mokrejs P, Spatenkova V. Impact of frailty, biomarkers and basic biochemical parameters on outcomes of comatose patients in status epilepticus: a single-center prospective pilot study. BMC Neurol 2024; 24:46. [PMID: 38279084 PMCID: PMC10811840 DOI: 10.1186/s12883-024-03537-y] [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: 10/30/2023] [Accepted: 01/14/2024] [Indexed: 01/28/2024] Open
Abstract
BACKGROUND Status epilepticus (SE) is a severe acute condition in neurocritical care with high mortality. Searching for risk factors affecting the prognosis in SE remains a significant issue. The primary study's aim was to test the predictive values of the Clinical Frailty Scale (CFS) and the Modified 11-item Frailty Index (mFI-11), the biomarkers and basic biochemical parameters collected at ICU on the Glasgow Outcome Scale (GOS) assessed at hospital discharge (hosp), and three months later (3 M), in comatose patients with SE. The secondary aim was to focus on the association between the patient's state at admission and the duration of mechanical ventilation, the ICU, and hospital stay. METHODS In two years single-centre prospective pilot study enrolling 30 adult neurocritical care patients with SE classified as Convulsive SE, A.1 category according to the International League Against Epilepsy (ILAE) Task Force without an-/hypoxic encephalopathy, we evaluated predictive powers of CFS, mFI-11, admission Status Epilepticus Severity Score (STESS), serum protein S100, serum Troponin T and basic biochemical parameters on prognosticating GOS using univariate linear regression, logistic regression and Receiver Operating Characteristic (ROC) analysis. RESULTS Our study included 60% males, with a mean age of 57 ± 16 years (44-68) and a mean BMI of 27 ± 5.6. We found CFS, mFI-11, STESS, and age statistically associated with GOS at hospital discharge and three months later. Among the biomarkers, serum troponin T level affected GOS hosp (p = 0.027). Serum C-reactive protein significance in prognosticating GOS was found by logistic regression (hosp p = 0.008; 3 M p = 0.004), and serum calcium by linear regression (hosp p = 0.028; 3 M p = 0.015). In relation to secondary outcomes, we found associations between the length of hospital stay and each of the following: age (p = 0.03), STESS (p = 0.009), and serum troponin T (p = 0.029) parameters. CONCLUSIONS This pilot study found promising predictive powers of two frailty scores, namely CFS and mFI-11, which were comparable to age and STESS predictors regarding the GOS at hospital discharge and three months later in ICU patients with SE. Among biomarkers and biochemical parameters, only serum troponin T level affected GOS at hospital discharge.
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Affiliation(s)
- Zdenek Krejzar
- Department of Neurology, First Faculty of Medicine, Charles University in Prague, Katerinska 1660/32, Prague 2, 121 08, Czech Republic
- Centrum of Anaesthesiology, Resuscitation and Intensive Care, Regional Hospital, Husova 357/10, Liberec, 46001, Czech Republic
| | - David Sila
- Centrum of Anaesthesiology, Resuscitation and Intensive Care, Regional Hospital, Husova 357/10, Liberec, 46001, Czech Republic
- Emergency Medical Services, Klasterni 954/5, Liberec, 460 01, Czech Republic
- Faculty of Health Studies, Technical University in Liberec, Studentska 1402/2, 461 17, Liberec 1, Czech Republic
| | - Petr Waldauf
- Department of Anaesthesiology and Resuscitation, Third Faculty of Medicine, Charles University in Prague, Ruska 10, Prague, 100 00, Czechia
- University Hospital Kralovske Vinohrady, 110 34 Prague 10, Srobarova, 1050, Czech Republic
| | - Eduard Kuriscak
- Institute of Physiology, First Faculty of Medicine, Charles University in Prague, Albertov 5, Prague, 128 00, Czech Republic
| | - Petr Mokrejs
- Department of Neurology, First Faculty of Medicine, Charles University in Prague, Katerinska 1660/32, Prague 2, 121 08, Czech Republic
- Emergency Medical Services, Klasterni 954/5, Liberec, 460 01, Czech Republic
| | - Vera Spatenkova
- Faculty of Health Studies, Technical University in Liberec, Studentska 1402/2, 461 17, Liberec 1, Czech Republic.
- Department of Anaesthesiology and Resuscitation, Third Faculty of Medicine, Charles University in Prague, Ruska 10, Prague, 100 00, Czechia.
- University Hospital Kralovske Vinohrady, 110 34 Prague 10, Srobarova, 1050, Czech Republic.
- Institute of Physiology, First Faculty of Medicine, Charles University in Prague, Albertov 5, Prague, 128 00, Czech Republic.
- Neurocenter, Neurointensive Care Unit, Regional Hospital, Husova 357/10, Liberec, 46001, Czech Republic.
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Spatenkova V, Bednar R, Melichova A, Kuriscak E. Yoga Breathing (Maheshwarananda's Modified Bhujangini Pranayama): A Randomized Study in Hypobaric Hypoxemia at 3,650 m Elevation. Int J Yoga Therap 2023; 33:Article 11. [PMID: 38031898 DOI: 10.17761/2023-d-22-00070] [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] [Indexed: 12/01/2023]
Abstract
Hypobaric hypoxemia represents a risk factor for body integrity and challenges its homeostasis. We examined whether practicing Maheshwarananda's modified bhujangini pranayama yoga breathing technique would influence hypobaric hypoxemia at an altitude of 3,650 m. An international randomized two-period, two-sequence crossover intervention study was conducted in September 2019 in the Himalayas. We compared 5-minute testing periods of pranayama breathing with normal resting breathing in 20 subjects divided randomly into two groups of 10 individuals; all had a daily practice of Maheshwarananda's modified bhujangini pranayama and were nonsmokers, lacto vegetarians, and alcohol abstainers. We measured the arterial saturation by pulse oximetry (SpO2; our primary outcome variable), end-tidal carbon dioxide partial pressure (EtCO2), respiratory rate, and heart rate at two altitudes: (1) 378 m (T0); and (2) 3,650 m (T1 = 2nd day, T2 = 4th day at the camp) immediately after finishing each testing period. We also monitored the presence of acute mountain sickness using the Lake Louise Scoring System. Mean SpO2 at 3,650 m increased right after the yoga breathing exercise from 88.60% to 90.35% at T1, and from 88.35% to 90.60% at T2 (T1 p = 0.007, T2 p = 0.004). No significant changes were observed in heart rate or EtCO2. The mean rate of normal control resting breathing was 13/min; the mean rate was 7/min during the yoga breathing. Right after Maheshwarananda's modified bhujangini pranayama hypobaric hypoxemia decreased as measured by SpO2, whereas EtCO2 and heart rate stayed comparable with the control resting breathing.
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Affiliation(s)
- Vera Spatenkova
- Faculty of Health Studies, Technical University of Liberec; Neurointensive Care Unit, Neurocenter, Regional Hospital, Liberec; and Institute of Physiology, First Medical Faculty, Charles University, Prague, Czech Republic
| | - Roman Bednar
- Department of Physiotherapy, Balneology and Medical Rehabilitation, University Hospital with Polyclinic of F. D. Roosevelt, Banská Bystrica, Slovakia
| | - Anna Melichova
- Faculty of Health Care, Slovak Medical University, Banská Bystrica, Slovakia
| | - Eduard Kuriscak
- Institute of Physiology, First Medical Faculty, Charles University, Prague, Czech Republic
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Spatenkova V, Bradac O, Mareckova Z, Suchomel P, Hradil J, Kuriscak E, Halacova M. Incidence of surgical site infections after cervical spine surgery: results of a single-center cohort study adhering to multimodal preventive wound control protocol. Eur J Orthop Surg Traumatol 2023; 33:1997-2004. [PMID: 36102993 PMCID: PMC10276122 DOI: 10.1007/s00590-022-03379-9] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/26/2022] [Accepted: 08/28/2022] [Indexed: 06/15/2023]
Abstract
PURPOSE The incidence of surgical site infections is considered a relevant indicator of perioperative and postoperative care quality. The aim of this study is to analyze and evaluate SSIs after elective cervical spine surgery under the guidance of our preventive multimodal wound protocol. METHODS A monocentric observational cohort study analyzed 797 patients who underwent cervical spine surgery from 2005 to 2010 (mean age 51.58 ± 11.74 year, male 56.09%, mean BMI 26.87 ± 4.41, ASA score 1-2 in 81.68% of patients), fulfilling the entry criteria: (1) cervical spine surgery performed by neurosurgeons (degenerative disease 85.19%, trauma 11.04%, tumor 3.76%), (2) elective surgery, (3) postoperative care in our neurointensive care unit. Our preventive wound control protocol management focused mainly on antibiotic prophylaxis, wound hygiene regime, and drainage equipment. All wound complications and surgical site infections were monitored up for 1 year after surgery. RESULTS We had only 2 (0.25%) patients with SSI after cervical spine surgery-one organ/space infection (osteomyelitis, primary due to liquorrhea) after anterior surgical approach, and one deep surgical site infection (due to dehiscence) after posterior approach. We had 17 (2.13%) patients with some wound complications (secretion 7, dehiscence 4, hematoma 1, edema 3, and liquorrhea 2) that were not classified as SSI according to the CDC guidelines. CONCLUSION Concerning our study population of patients undergoing elective cervical surgery, with ASA scores 1-2 in 81.68% of our patients, the incidence of SSI was 0.14% after anterior surgical approach, 1.4% after posterior surgical approach, and 0.25% altogether in the referred cohort.
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Affiliation(s)
- Vera Spatenkova
- Neurocenter, Neurointensive Care Unit, Regional Hospital, Husova 357/10, 46063 Liberec, Czech Republic
- Department of Anaesthesia and Intensive Care, 3 Medical Faculty, Charles University, Srobarova 50, 100 34 Prague, Czech Republic
- Institute of Physiology, First Medical Faculty, Charles University in Prague, Albertov 5, 12800 Prague 2, Czech Republic
- Faculty of Health Studies, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec 1, Czech Republic
| | - Ondrej Bradac
- Department of Neurosurgery, 2nd Faculty of Medicine, Charles University in Prague and Motol University Hospital, V Úvalu 84/1, 150 06 Prague, Czech Republic
| | - Zuzana Mareckova
- Neurocenter, Department of Neurosurgery, Regional Hospital, Husova 357/10, 46063 Liberec, Czech Republic
| | - Petr Suchomel
- Faculty of Health Studies, Technical University of Liberec, Studentská 1402/2, 461 17 Liberec 1, Czech Republic
- Neurocenter, Department of Neurosurgery, Regional Hospital, Husova 357/10, 46063 Liberec, Czech Republic
| | - Jan Hradil
- Neurocenter, Department of Neurosurgery, Regional Hospital, Husova 357/10, 46063 Liberec, Czech Republic
| | - Eduard Kuriscak
- Institute of Physiology, First Medical Faculty, Charles University in Prague, Albertov 5, 12800 Prague 2, Czech Republic
| | - Milada Halacova
- Department of Clinical Pharmacology, Na Homolce Hospital, Roentgenova 37/2, 150 30 Prague 5, Czech Republic
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Spatenkova V, Zvercova I, Jindrisek Z, Veverkova I, Kuriscak E. Comparison of nursing students’ performance of cardiopulmonary resuscitation between 1 semester and 3 semesters of manikin simulations in the Czech Republic: a non-randomized controlled study. J Educ Eval Health Prof 2023; 20:9. [PMID: 36997317 PMCID: PMC10129870 DOI: 10.3352/jeehp.2023.20.9] [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] [Figures] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Accepted: 03/19/2023] [Indexed: 06/19/2023]
Abstract
PURPOSE This study aimed to assess the effect of simulation teaching in critical care courses in a nursing study program on the quality of chest compressions of cardiopulmonary resuscitation (CPR). METHODS An observational cross-sectional study was conducted at the Faculty of Health Studies at the Technical University of Liberec. The success rate of CPR was tested in exams comparing 2 groups of students, totaling 66 different individuals, who completed half a year (group 1: intermediate exam with model simulation) or 1.5 years (group 2: final theoretical critical care exam with model simulation) of undergraduate nursing critical care education taught completely with a Laerdal SimMan 3G simulator. The quality of CPR was evaluated according to 4 components: compression depth, compression rate, time of correct frequency, and time of correct chest release. RESULTS Compression depth was significantly higher in group 2 than in group 1 (P=0.016). There were no significant differences in the compression rate (P=0.210), time of correct frequency (P=0.586), or time of correct chest release (P=0.514). CONCLUSION Nursing students who completed the final critical care exam showed an improvement in compression depth during CPR after 2 additional semesters of critical care teaching compared to those who completed the intermediate exam. The above results indicate that regularly scheduled CPR training is necessary during critical care education for nursing students.
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Affiliation(s)
- Vera Spatenkova
- Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic
- Neurointensive Care Unit, Neurocenter, Regional Hospital, Liberec, Czech Republic
| | - Iveta Zvercova
- Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic
| | - Zdenek Jindrisek
- Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic
| | - Ivana Veverkova
- Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic
| | - Eduard Kuriscak
- Institute of Physiology, First Medical Faculty, Charles University Prague, Prague, Czech Republic
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Spatenkova V, Sila D, Halacova M, Hradil J, Krejzar Z, Kuriscak E. Individualized perioperative management in transoral spine surgery: a single-center cohort study evaluating surgical wound complications and wound infections. BMC Anesthesiol 2022; 22:123. [PMID: 35477359 PMCID: PMC9044798 DOI: 10.1186/s12871-022-01673-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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/04/2021] [Accepted: 04/19/2022] [Indexed: 11/23/2022] Open
Abstract
Background Transoral spine surgery is specific due to both its surgical approach and the spectrum of diseases it targets. Patients with high age and elevated clinical frailty scores are often involved, and there are reports of increased risks of surgical site infection (SSI) due to extended exposures requiring maxilotomy or mandibulotomy. Our case series describes surgical wound complications under the meticulous application of individualized perioperative multimodal management. Methods Our primary outcome was the occurrence of SSI and the secondary outcome was the occurrence of other noninfectious wound complications evaluated in 22 adult patients who consecutively underwent the transoral spine surgery from 2001 to 2018 (trauma – C2, cervical nonunion: 6 patients, 27%; tumor: 4 patients, 18%; osteomyelitis: 6 patients, 27%; other non-traumatic cases: 6 patients, 27%). Structuralized data comprising parameters related to nosocomial infections after spine surgery were continuously processed and put into specialized database of preventive multimodal nosocomial infection control protocol that was used as a main source of analyzed parameters. The mean age of studied cohort was 54.9 \documentclass[12pt]{minimal}
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\begin{document}$$\pm$$\end{document}± 5.22, and the mean clinical frailty score was 2.59 \documentclass[12pt]{minimal}
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\begin{document}$$\pm$$\end{document}± 1.07. There were 7 patients (32%) who only had the transoral approach and 15 patients (68%) having this approach followed by additional posterior approach. We observed SSI from all wound complications for up to one year after surgery. Results There were 4 (18%) superficial wound complications from transoral approach, but none of them were infected. We had 2 patients (13%) with deep wound infections after subsequent posterior approach, but only one (4.5%) was classified as SSI. Conclusions We describe the wound complications and the incidence of SSI in a series of 22 patients after the transoral surgery. Considering the average values of the clinical frailty score reaching 2.59, American Society of Anesthesiologists score of 2.73, and the BMI of 26.87, the transoral spine surgery did not seem to be a considerable risk for SSI in the analyzed cohort, provided preventive perioperative multimodal management is properly individualized and followed.
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Affiliation(s)
- Vera Spatenkova
- Neurocenter, Neurointensive Care Unit, Regional Hospital, Husova 357/10, 46063, Liberec, Czech Republic. .,First Medical Faculty, Institute of Physiology, Charles University, Prague, Czech Republic. .,Department of Anaesthesia and Intensive Care Medicine Third Medical Faculty, Charles University, Prague, Czech Republic. .,Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic.
| | - David Sila
- Anaesthesia and Intensive Care Department, Regional Hospital Liberec, Liberec, Czech Republic
| | - Milada Halacova
- Department of Clinical Pharmacology, Na Homolce Hospital, Prague, Czech Republic
| | - Jan Hradil
- Neurocenter, Department of Neurosurgery, Regional Hospital Liberec, Liberec, Czech Republic
| | - Zdenek Krejzar
- Anaesthesia and Intensive Care Department, Regional Hospital Liberec, Liberec, Czech Republic.,Department of Neurology First Medical Faculty, Charles University, Prague, Czech Republic
| | - Eduard Kuriscak
- First Medical Faculty, Institute of Physiology, Charles University, Prague, Czech Republic
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Mlcek M, Meani P, Cotza M, Kowalewski M, Raffa GM, Kuriscak E, Popkova M, Pilato M, Arcadipane A, Ranucci M, Lorusso R, Belohlavek J. Atrial Septostomy for Left Ventricular Unloading During Extracorporeal Membrane Oxygenation for Cardiogenic Shock: Animal Model. JACC Cardiovasc Interv 2021; 14:2698-2707. [PMID: 34949394 DOI: 10.1016/j.jcin.2021.09.011] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/19/2021] [Revised: 08/11/2021] [Accepted: 09/14/2021] [Indexed: 10/19/2022]
Abstract
OBJECTIVES The aim of this study was to quantify and understand the unloading effect of percutaneous balloon atrial septostomy (BAS) in acute cardiogenic shock (CS) treated with venoarterial (VA) extracorporeal membranous oxygenation (ECMO). BACKGROUND In CS treated with VA ECMO, increased left ventricular (LV) afterload is observed that commonly interferes with myocardial recovery or even promotes further LV deterioration. Several techniques for LV unloading exist, but the optimal strategy and the actual extent of such procedures have not been fully disclosed. METHODS In a porcine model (n = 11; weight 56 kg [53-58 kg]), CS was induced by coronary artery balloon occlusion (57 minutes [53-64 minutes]). Then, a step-up VA ECMO protocol (40-80 mL/kg/min) was run before and after percutaneous BAS was performed. LV pressure-volume loops and multiple hemoglobin saturation data were evaluated. The Wilcoxon rank sum test was used to assess individual variable differences. RESULTS Immediately after BAS while on VA ECMO support, LV work decreased significantly: pressure-volume area, end-diastolic pressure, and stroke volume to ∼78% and end-systolic pressure to ∼86%, while superior vena cava and tissue oximetry did not change. During elevating VA ECMO support (40-80 mL/kg/min) with BAS vs without BAS, we observed 1) significantly less mechanical work increase (122% vs 172%); 2) no end-diastolic volume increase (100% vs 111%); and 3) a considerable increase in end-systolic pressure (134% vs 144%). CONCLUSIONS In acute CS supported by VA ECMO, atrial septostomy is an effective LV unloading tool. LV pressure is a key component of LV work load, so whenever LV work reduction is a priority, arterial pressure should carefully be titrated low while maintaining organ perfusion.
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Affiliation(s)
- Mikulas Mlcek
- Department of Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic.
| | - Paolo Meani
- Department of Cardiovascular Anesthesia and Intensive Care Unit, IRCCS Policlinico San Donato, Milan, Italy; Cardio-Thoracic Surgery Department, Heart & Vascular Centre, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Mauro Cotza
- Department of Cardiovascular Anesthesia and Intensive Care Unit, IRCCS Policlinico San Donato, Milan, Italy
| | - Mariusz Kowalewski
- Cardio-Thoracic Surgery Department, Heart & Vascular Centre, Maastricht University Medical Centre, Maastricht, the Netherlands
| | - Giuseppe Maria Raffa
- Cardio-Thoracic Surgery Department, Heart & Vascular Centre, Maastricht University Medical Centre, Maastricht, the Netherlands; Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, IRCCS-ISMETT, Palermo, Italy
| | - Eduard Kuriscak
- Department of Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Michaela Popkova
- Department of Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic
| | - Michele Pilato
- Intensive Care Unit, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, Mediterranean Institute for Transplantation and Advanced Specialized Therapies, Palermo, Italy
| | - Antonio Arcadipane
- Intensive Care Unit, Department for the Treatment and Study of Cardiothoracic Diseases and Cardiothoracic Transplantation, Mediterranean Institute for Transplantation and Advanced Specialized Therapies, Palermo, Italy
| | - Marco Ranucci
- Department of Cardiovascular Anesthesia and Intensive Care Unit, IRCCS Policlinico San Donato, Milan, Italy
| | - Roberto Lorusso
- Department of Cardiovascular Anesthesia and Intensive Care Unit, IRCCS Policlinico San Donato, Milan, Italy; Cardiovascular Research Institute Maastricht, Maastricht University, Maastricht, the Netherlands
| | - Jan Belohlavek
- Department of Physiology, First Faculty of Medicine, Charles University, Prague, Czech Republic; 2nd Department of Medicine, Department of Cardiovascular Medicine, First Faculty of Medicine, Charles University and General University Hospital in Prague, Prague, Czech Republic
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Spatenkova V, Bednar R, Oravcova G, Melichova A, Kuriscak E. Yogic breathing in hypobaric environment: breathing exercising and its effect on hypobaric hypoxemia and heart rate at 3,650-m elevation. J Exerc Rehabil 2021; 17:270-278. [PMID: 34527639 PMCID: PMC8413908 DOI: 10.12965/jer.2142324.162] [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] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/02/2021] [Accepted: 07/01/2021] [Indexed: 11/22/2022] Open
Abstract
High altitude sojourn is a risk factor for hypobaric hypoxemia and subsequent altitude sickness. The aim of this study was to analyze the effect of new type of yogic breathing—Maheshwarananda’s new Modified Bhujangini Pranayama performed by active yoga practitioners—on the arterial haemoglobin saturation of oxygen (measured by the pulse oximetry - SpO2) and the heart rate compared to normal spontaneous resting breathing. A pilot prospective study was conducted in the Himalayas at an altitude of 3,650 m. We monitored SpO2 and pulse rate in 34 experienced yoga practitioners. Within the 3 measurement days at the altitude of 3,650 m, the mean value of SpO2 increased from 89.11± 4.78 to 93.26±4.44 (P<0.001) after the yogic breathing exercise. No significant changes were observed in pulse rate (P<0.230) measured before and after yogic breathing. The new Yogic breathing—Maheshwarananda’s Modified Bhujangini Pranayama—is increasing the arterial haemoglobin saturation compared to normal resting spontaneous breathing. The heart rate was not affected by this type of yogic breathing.
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Affiliation(s)
- Vera Spatenkova
- Faculty of Health Studies, Technical University of Liberec, Liberec, Czech Republic.,Neurointensive Care Unit, Neurocenter, Regional Hospital, Liberec, Czech Republic.,Institute of Physiology, First Medical Faculty, Charles University in Prague, Praha, Czech Republic
| | - Roman Bednar
- Department of Physiotherapy Balneology and Medical Rehabilitation, University Hospital with Polyclinic of F. D. Roosevelt, Banska Bystrica, Slovakia Republic
| | - Gabriela Oravcova
- Clinic of Pneumology and Phtiseology, Martin University Hospital, Martin, Slovakia Republic
| | - Anna Melichova
- Faculty of Health Care, Banska Bystrica, Slovak Medical University, Banska Bystrica, Slovakia Republic
| | - Eduard Kuriscak
- Institute of Physiology, First Medical Faculty, Charles University in Prague, Praha, Czech Republic
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Kuriscak E, Wunsch Z, Marsalek P. Voltage sensitive currents and information processing by single neurons. BMC Neurosci 2015. [PMCID: PMC4697532 DOI: 10.1186/1471-2202-16-s1-p158] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Abstract
We investigate an artificial neural network model with a modified Hebb rule. It is an auto-associative neural network similar to the Hopfield model and to the Willshaw model. It has properties of both of these models. Another property is that the patterns are sparsely coded and are stored in cycles of synchronous neural activities. The cycles of activity for some ranges of parameter increase the capacity of the model. We discuss basic properties of the model and some of the implementation issues, namely optimizing of the algorithms. We describe the modification of the Hebb learning rule, the learning algorithm, the generation of patterns, decomposition of patterns into cycles and pattern recall.
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Affiliation(s)
- Julius Stroffek
- Charles University Prague, Department of Pathological Physiology, U nemocnice 5, CZ-128 53 Praha 2, Czech Republic.
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