National Repository of Grey Literature 17 records found  1 - 10next  jump to record: Search took 0.01 seconds. 
The clinical significance of measuring the distensibility of the carotid artery
Chlumský, Jaromír ; Kvapil, Milan (advisor) ; Kittnar, Otomar (referee) ; Aschermann, Michael (referee) ; Spáčil, Jiří (referee)
The clinical significance of measuring the distensibility of the carotid artery Powered by TCPDF (www.tcpdf.org)
Advanced heart failure in the 21st century: new physiological insights and new therapeutic avenues
Boilson, Barry Anthony ; Aschermann, Michael (advisor) ; Vítovec, Jiří (referee) ; Ošťádal, Petr (referee)
Countries with developed economies are currently facing an epidemic of heart failure (HF) and the prognosis of patients with advanced HF remains extremely poor. One of the therapeutic options for patients with advanced HF is heart transplant. The number of cardiac transplants performed in USA and other states each year has stagnated despite an increasing number of cases of end-stage heart failure each year, primarily due to limited donor supply. Therefore, novel therapies for cardiac replacement (such as left ventricular assist devices, LVADs), other cardiac assistance devices including arrhythmia treatment (cardiac resynchronization therapy, CRT or implantable cardiac defibrillators (ICDs) have been tested and are being used in clinical practice. Moreover, stem cell therapy has been tested as well as a role of endogenous progenitor cells has been explored. However, effects of the novel therapeutic approaches or their combination on pathophysiology of HF as well the involvement of endogenous progenitor cells are incompletely understood, which requires further research. The main aims of the thesis with corresponding main hypotheses were three as follows. First, to study the physiological effects of LVADs on pulmonary vascular resistance and the incidence and clinical tolerance of ventricular...
The coronary atherosclerosis regression during hypolipidemic therapy
Kovárník, Tomáš ; Aschermann, Michael (advisor) ; Rokyta, Richard (referee) ; Pudil, Radek (referee)
Background: There is no study focusing on changes of coronary atherosclerosis during dual hypolipidemic therapy with statin and ezetimibe. Methods: 107 patients with stable angina were enrolled and the final analysis was performed in 89 patients. Randomization was 1:1 to the group A (atorvastatin 80mg and ezetimibe 10mg) and to the standard group S. Treatment period was 12 months. Results: Changes of percent atheroma volume (PAV) were -0,4% in group A and + 1,4% in group S, p=0,014. Combine atherosclerosis regression (increase of lumen volume together with decrease of PAV) was found more frequent in group A (40,5%) than the group S (14,9%), p=0,007. The target LDLc level < 2mmol/l, presence of at least four of five atherosclerotic risk factors, and decrease of VCAM level were independent predictors for plaque regression. There were no significant differences in plaque composition between the two groups over the duration of the study. However during analysis the two groups together, fibrous and fibro-fatty tissues decreased and dense calcification and necrotic core increased during follow-up. Conclusion: The dual hypolipidemic therapy starts atherosclerosis regression. Despite significant decrease of lipid levels the continuous plaque shift from fibro and fibro-fatty to necrotic with calcification...
Some aspects of pathophysiology of pulmonary arterial hypertension and its epidemiology in the Czech Republic
Jansa, Pavel ; Aschermann, Michael (advisor) ; Widimský, Jiří (referee) ; Čerbák, Roman (referee)
1 Univerzita Karlova v Praze 1. lékařská fakulta Některé aspekty patofyziologie plicní arteriální hypertenze a její výskyt v České republice Some aspects of pathophysiology of pulmonary arterial hypertension and its epidemiology in the Czech Republic MUDr. Pavel Jansa Praha 2011 2 Abstract Pulmonary arterial hypertension (PAH) is a group of diseases characterized by a progressive increase of resistance and pressure in pulmonary vascular bed. In all types of PAH the same four pathological processes are reported: vasoconstriction, inflammation, thrombosis and remodelling. The genetic background is essential for the development of PAH. We aimed to investigate the role of polymorphisms of endothelial nitric oxide synthase (eNOS) genes in PAH. We studied 142 PAH patients and 189 healthy subjects. We examined 3 polymorphisms of the eNOS gene, including the Glu298Asp polymorphism, 27-base pair (bp) variable numbers of tandem repeats (VNTR) and -786 T/C promoter gene polymorphism. Prevalence of 27-bp VNTR allele A was higher in patients with PAH compared with healthy controls. Patients with PAH associated with connective tissue diseases had higher prevalence of AA genotype compared with other PAH subgroups. The Glu298Asp polymorphism and -786 T/C polymorphism are not associated with PAH. Thrombotic arteriopathy is...
Advanced heart failure in the 21st century: new physiological insights and new therapeutic avenues
Boilson, Barry Anthony ; Aschermann, Michael (advisor) ; Vítovec, Jiří (referee) ; Ošťádal, Petr (referee)
Countries with developed economies are currently facing an epidemic of heart failure (HF) and the prognosis of patients with advanced HF remains extremely poor. One of the therapeutic options for patients with advanced HF is heart transplant. The number of cardiac transplants performed in USA and other states each year has stagnated despite an increasing number of cases of end-stage heart failure each year, primarily due to limited donor supply. Therefore, novel therapies for cardiac replacement (such as left ventricular assist devices, LVADs), other cardiac assistance devices including arrhythmia treatment (cardiac resynchronization therapy, CRT or implantable cardiac defibrillators (ICDs) have been tested and are being used in clinical practice. Moreover, stem cell therapy has been tested as well as a role of endogenous progenitor cells has been explored. However, effects of the novel therapeutic approaches or their combination on pathophysiology of HF as well the involvement of endogenous progenitor cells are incompletely understood, which requires further research. The main aims of the thesis with corresponding main hypotheses were three as follows. First, to study the physiological effects of LVADs on pulmonary vascular resistance and the incidence and clinical tolerance of ventricular...
Some aspects of pathophysiology of pulmonary arterial hypertension and its epidemiology in the Czech Republic
Jansa, Pavel ; Aschermann, Michael (advisor) ; Widimský, Jiří (referee) ; Čerbák, Roman (referee)
1 Univerzita Karlova v Praze 1. lékařská fakulta Některé aspekty patofyziologie plicní arteriální hypertenze a její výskyt v České republice Some aspects of pathophysiology of pulmonary arterial hypertension and its epidemiology in the Czech Republic MUDr. Pavel Jansa Praha 2011 2 Abstract Pulmonary arterial hypertension (PAH) is a group of diseases characterized by a progressive increase of resistance and pressure in pulmonary vascular bed. In all types of PAH the same four pathological processes are reported: vasoconstriction, inflammation, thrombosis and remodelling. The genetic background is essential for the development of PAH. We aimed to investigate the role of polymorphisms of endothelial nitric oxide synthase (eNOS) genes in PAH. We studied 142 PAH patients and 189 healthy subjects. We examined 3 polymorphisms of the eNOS gene, including the Glu298Asp polymorphism, 27-base pair (bp) variable numbers of tandem repeats (VNTR) and -786 T/C promoter gene polymorphism. Prevalence of 27-bp VNTR allele A was higher in patients with PAH compared with healthy controls. Patients with PAH associated with connective tissue diseases had higher prevalence of AA genotype compared with other PAH subgroups. The Glu298Asp polymorphism and -786 T/C polymorphism are not associated with PAH. Thrombotic arteriopathy is...
The coronary atherosclerosis regression during hypolipidemic therapy
Kovárník, Tomáš ; Aschermann, Michael (advisor) ; Rokyta, Richard (referee) ; Pudil, Radek (referee)
Background: There is no study focusing on changes of coronary atherosclerosis during dual hypolipidemic therapy with statin and ezetimibe. Methods: 107 patients with stable angina were enrolled and the final analysis was performed in 89 patients. Randomization was 1:1 to the group A (atorvastatin 80mg and ezetimibe 10mg) and to the standard group S. Treatment period was 12 months. Results: Changes of percent atheroma volume (PAV) were -0,4% in group A and + 1,4% in group S, p=0,014. Combine atherosclerosis regression (increase of lumen volume together with decrease of PAV) was found more frequent in group A (40,5%) than the group S (14,9%), p=0,007. The target LDLc level < 2mmol/l, presence of at least four of five atherosclerotic risk factors, and decrease of VCAM level were independent predictors for plaque regression. There were no significant differences in plaque composition between the two groups over the duration of the study. However during analysis the two groups together, fibrous and fibro-fatty tissues decreased and dense calcification and necrotic core increased during follow-up. Conclusion: The dual hypolipidemic therapy starts atherosclerosis regression. Despite significant decrease of lipid levels the continuous plaque shift from fibro and fibro-fatty to necrotic with calcification...
Effectiveness of treatment of chronic forms of atrial fibrillation by radiofrequency catheter ablation, application of preventive stimulation modes and hybrid therapies
Šedivá, Lucie ; Aschermann, Michael (advisor) ; Heinc, Petr (referee) ; Horký, Karel (referee)
Výsledky naší studie nám umožňují odpovědět na hlavní cíl studie: Pomocí paměťových záznamů z kardiostimulátoru jsme prokázali největší efektivitu na potlačení FS kombinovanou terapií, tedy radiofrekvenční katetrizační ablací a aktivovanými preventivními funkcemi kardiostimulátoru. Hodnocení celkové zátěže FS, které jsme měli umožněné díky paměťovým funkcím KS prokázalo výrazně lepší výsledky u skupiny C, 63% vyléčených ( FS=0), proti skupině B, která měla úspěšnost léčby 45% ( FS=0) a skupina A pouze 30% ( FS=0). Ad 1 Do naší studie byli zařazeni nemocní s chronickými typy FS, ze 150 nemocných bylo 39 nemocných ( 26%) ve stadiu permanentní FS, 111 nemocných (74%) mělo persistující FS, vyžadující pro výrazné potíže a hemodynamický dopad opakované kardioverze. Ve všech skupinách jsme prokazovali významné zlepšení ( ve skupině A mělo v závěru studie devět nemocných permanentní FS. Ve skupině B to byl jeden nemocný a ve skupině v C měli čtyři nemocní permanentní. Ve skupině C bylo nejvíce nemocných s nulovou zátěží FS ( celkem 24 nemocných). Ad 2 Posouzení kvality života-srovnání dotazníků před randomizací a po dvanácti měsících ukazuje nejlepší výsledek u skupiny C, i když u celého souboru došlo vlivem léčby ke zlepšení kvality života. Ad 3 V celém průběhu studie od aktivace preventivních algoritmů po...
The clinical significance of measuring the distensibility of the carotid artery
Chlumský, Jaromír ; Kvapil, Milan (advisor) ; Kittnar, Otomar (referee) ; Aschermann, Michael (referee) ; Spáčil, Jiří (referee)
The clinical significance of measuring the distensibility of the carotid artery Powered by TCPDF (www.tcpdf.org)
Implementation of organ support methods to acute cardiology and its influence on patients' survival.
Bělohlávek, Jan ; Aschermann, Michael (advisor) ; Rokyta, Richard (referee) ; Nečas, Emanuel (referee)
Acute cardiology cares for critically ill patients suffering from organ dysfunctions and failures, which have to be supported by both pharmacological and non-pharmacological, device-related organ support. The thesis deals with implementation of organ support methods to acute cardiology and its influence on patients' survival. Author implemented and scientifically analyzed benefits of ECMO (extracorporeal membrane oxygenation) both in generally critically ill, and in patients with severe right ventricular failure with cardiogenic shock. (...) These findings confirm crucial role of hemodynamic status in the prognosis of the critically ill patients. Noninvasive artificial mechanical ventilation and specialized outpatient facility were also implemented for early postdischarge care for patients, who survive critical illness. Continued extending of organ support measures is a key prerequisite for further cardiac centre developement.

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