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Gastrointestinal tract dysfunction in critical ill patients
Balihar, Karel ; Matějovič, Martin (advisor) ; Kula, Roman (referee) ; Martínek, Jan (referee)
Multiorgan dysfunction syndrom is the major driving pathophysiological mechanism of morbidity and mortality in critically ill patients. Gastrointestinal dysfunction usually develops as a result critical illness and it is believed to play a key role in the development and progression of multiple organ dysfunction. Moreover, any primary disorder of the gastrointestinal tract, if severe enough, can lead to a critical state and secondary multiorgan dyfunction. Despite intensive experimental and clinical research, reliable tools for monitoring and evaluation of the severity of gastrointestinal dysfunction remain unknown. In the same line, therapy of this complex pathology remains largely supportive. The aim of this thesis was first to explain the severity of the most common and most serious nosocomial infection of the digestive tract, second to elucidate the safety and effectiveness of the endoscopic dual enteral probe insertion in ventilated critically ill patients, and, third to evaluate new diagnostic tools of the gastrointestinal dysfunction. Finally, we present an ongoing project aimed at investigating esophageal dysfunction in mechanically ventilated critically ill patients.
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Esophageal achalasia - etiology, pathophysiology and treatment.
Vacková, Zuzana ; Martínek, Jan (advisor) ; Balihar, Karel (referee) ; Rejchrt, Stanislav (referee)
Background: Achalasia is a primary esophageal motility disorder that can be classified into three types (I-III) based on high-resolution manometry (HRM). Exact pathogenesis is unknown, but immune-mediated processes and genetic predisposition play a role, which is supported by finding of a genetic risk variant (rs28688207 insertion) in HLA-DQB1 gene that is strongly associated with achalasia. Per-oral endoscopic myotomy (POEM) has become a standard treatment for achalasia, but the long-term efficacy, safety and impact on esophageal physiology are not fully understood. The aims of our studies were to perform the first genotype-phenotype analysis investigating the frequency of rs28688207 accross three HRM types of achalasia, to evaluate the efficacy and safety of POEM and to assess the post-POEM esophageal motility patterns. Patients and methods: These were three retrospective studies of prospectively collected data. Genotyping of the rs2868827 insertion was performed using real-time PCR in 347 patients from Czech Republic (n = 163), Germany (n = 114), Greece (n = 70). The efficacy and safety of POEM were evaluated in 133 patients treated in our center. The post-POEM esophageal motility was assessed using the Chicago Classification in 237 patients in whom HRM was performed prior to and after POEM....
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Gastrointestinal tract dysfunction in critical ill patients
Balihar, Karel ; Matějovič, Martin (advisor) ; Kula, Roman (referee) ; Martínek, Jan (referee)
Multiorgan dysfunction syndrom is the major driving pathophysiological mechanism of morbidity and mortality in critically ill patients. Gastrointestinal dysfunction usually develops as a result critical illness and it is believed to play a key role in the development and progression of multiple organ dysfunction. Moreover, any primary disorder of the gastrointestinal tract, if severe enough, can lead to a critical state and secondary multiorgan dyfunction. Despite intensive experimental and clinical research, reliable tools for monitoring and evaluation of the severity of gastrointestinal dysfunction remain unknown. In the same line, therapy of this complex pathology remains largely supportive. The aim of this thesis was first to explain the severity of the most common and most serious nosocomial infection of the digestive tract, second to elucidate the safety and effectiveness of the endoscopic dual enteral probe insertion in ventilated critically ill patients, and, third to evaluate new diagnostic tools of the gastrointestinal dysfunction. Finally, we present an ongoing project aimed at investigating esophageal dysfunction in mechanically ventilated critically ill patients.
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