|
|
230 V inverter for isolated mains supplied from solar cells
Michálek, Pavel ; Procházka, Petr (referee) ; Martiš, Jan (advisor)
In this thesis is presented detail design of power part of DC/DC converter and output inverter. This device will serve for creating an artificial network in a family house where it will be used for supplying selected household appliances which are designed for use in AC network. The converter will be supplied with DC voltage. This tension will be obtained from a system of photovoltaic panels. The output voltage will have alternate character and it will be close to the network voltage 230 V/50 Hz. In the introductory part of thesis are discussed possible topologies of converters and output inverters. Subsequently are designed individual parts of supply inverter. In the final part there are shown waveforms of important values and is given a thesis evaluation.
|
|
| |
|
| |
|
|
Translumbar Central Venous Hemodialysis Catheters
Jonszta, Tomáš ; Krajina, Antonín (advisor) ; Roček, Miloslav (referee) ; Michálek, Pavel (referee)
Translumbar Central Venous Hemodialysis Catheters Aim: Hemodialysis catheter translumbal placement enables high quality venous access in patients with exhausted usual venous routes. The aim of this study is to evaluate technical success of catheter insertion and long-term patency of translumbar hemodialysis catheters (TLC) and to compare the results with standard tunnelized hemodialysis catheters inserted via internal jugular vein (SC). Material and methods: Between 2010 and 2018 translumbar dialysis catheter (TLC) was inserted in 37 patients in whom occlusion of internal jugular and brachiocephalic veins precluded standard implantation route. 17 (45,9 %) men and 20 (54,1 %) women were treated with age median 64,0 years, range 41-89 years. The TLC patients were compared with standard tunnelized heamodialysis internal jugular catheter patients (SC), in whom procedures were performed in the same time period. SC was placed in 196 patients, 113 (57,7 %) men and 83 (42,3 %) women, with age median 68,5 years, range 16-91 years. Results: The total time of follow up for the TLC patients was 1-2097 days with median 673 days, while the follow up for the SC pacients was 1-2915 days with median 310 days. Technical success rate for the insertion was 97,4 % in the TLC group and 98,6 % in the SC group. Periprocedural...
|
|
|
Peripherally Inserted Central Catheter - a role of nurse
Rosypalová, Marta ; Michálek, Pavel (advisor) ; Hocková, Jana (referee)
This diploma thesis is related to peripherally inserted central venous catheters (PICC), the role of nursing staff in inserting and care of these systems. The aim of the work, which is partly based on PICC project organized by the Department of Anaesthesiology and Intensive Care Medicine, 1st Faculty of Medicine of the Charles University and General University Hospital in Prague, was to investigate the quality of life in patients with PICC after their insertion, to evaluate the incidence of complications (venous thrombosis, bacteraemia, sepsis, local infections, decubitus, disconnection of the system, mechanical complications, etc.) and compare the economic efficiency of PICC systems with other available methods. The aim of the second part of the thesis, which is unrelated to the previously mentioned project, was to reveal the awareness of nurses/paramedics on PICC catheter. This thesis has two traditional parts - theoretical and empirical. The theoretical part deals initially with the central venous catheter in general and then it describes main features of the PICC systems. The following part reviews indications, insertion techniques and potential complications associated with the PICC systems. The role of nursing staff in the insertion and maintenance of these systems is also highlighted. The...
|
|
|
Complications of central venous catheters applications 2011 CDC guedelines
Šťastná, Monika ; Michálek, Pavel (advisor) ; Hocková, Jana (referee)
In the presented diploma thesis I deal with the issue of proper insertion of short-term central venous catheters, adherence to procedures by medical and non-medical staff according to CDC guidelines 2011 during insertion and subsequent treatment in intensive care in a faculty-type medical facility. The aim of the diploma thesis is to determine the occurrence of complications, especially infectious, the level of adherence to recommended procedures in practice according to 2011 CDC guidelines, central venous catheter manipulation, comparison of real activities with recommendations and mapping the level of knowledge of non-medical staff about short-term central venous catheters. The theoretical part deals with the importance of clinical guidelines, central venous catheter in general, complications associated with the central venous catheter and prevention of infectious complications of invasive inputs. For the empirical part of the diploma thesis, a prospective non- randomized observational study of cannulation and possible complications associated with a short- term central venous catheter according to CDC 2011 guidelines was chosen to determine real procedures for insertion, treatment and removal of a short-term central venous catheter. This was supplemented by an exploratory questionnaire survey of...
|
|
|
Experimental surgical airway in special conditions.
Henlín, Tomáš ; Michálek, Pavel (advisor) ; Málek, Jiří (referee) ; Trča, Stanislav (referee)
The thesis analyzes the issue of securing the airways in special conditions. The author is a military anesthesiologist, so the special conditions in this work are understood as the situation on the battlefield. The introductory part of the thesis discusses the historical development of the view of airway management, describes the various methods of airway management and their position in "combat airway management". The research part of the thesis first explores supraglottic airway management techniques, which in today's concept of algorithms and recommendations is intended primarily for non-medical professionals and/or health professionals who do not have much experience with complex methods of airway management. The first part has shown that the use of supraglottic devices by inexperienced rescuers is safe and that it is possible to define and choose from a large number of aids that are the most suitable on the market. The second part of the research part was focused on tracheal intubation and portable video laryngoscopes. It has shown that these can improve intubation conditions even if performed by an inexperienced rescuer. The main research effort has been focused on the most critical part of airway management procedures, surgical airway access. A live large laboratory animal proved to be the...
|
|
|
Translumbar Central Venous Hemodialysis Catheters
Jonszta, Tomáš ; Krajina, Antonín (advisor) ; Roček, Miloslav (referee) ; Michálek, Pavel (referee)
Translumbar Central Venous Hemodialysis Catheters Aim: Hemodialysis catheter translumbal placement enables high quality venous access in patients with exhausted usual venous routes. The aim of this study is to evaluate technical success of catheter insertion and long-term patency of translumbar hemodialysis catheters (TLC) and to compare the results with standard tunnelized hemodialysis catheters inserted via internal jugular vein (SC). Material and methods: Between 2010 and 2018 translumbar dialysis catheter (TLC) was inserted in 37 patients in whom occlusion of internal jugular and brachiocephalic veins precluded standard implantation route. 17 (45,9 %) men and 20 (54,1 %) women were treated with age median 64,0 years, range 41-89 years. The TLC patients were compared with standard tunnelized heamodialysis internal jugular catheter patients (SC), in whom procedures were performed in the same time period. SC was placed in 196 patients, 113 (57,7 %) men and 83 (42,3 %) women, with age median 68,5 years, range 16-91 years. Results: The total time of follow up for the TLC patients was 1-2097 days with median 673 days, while the follow up for the SC pacients was 1-2915 days with median 310 days. Technical success rate for the insertion was 97,4 % in the TLC group and 98,6 % in the SC group. Periprocedural...
|
|
|
Impact of therapeutic mild hypothermia on selected pathophysiological and clinical processes after cardiac arrest
Škulec, Roman ; Dostál, Pavel (advisor) ; Drábková, Jarmila (referee) ; Michálek, Pavel (referee)
Introduction: Induction of therapeutic hypothermia to target body temperature of 32 - 34 řC for 12 - 24 hours may reduce post-cardiac arrest brain injury in patients resuscitated from out- of-hospital cardiac arrest (OHCA). It has been recommended that the target therapeutic temperature should be reached as soon as possible. Thus, prehospital initiation of cooling appears to be a method of choice. Aim of the study: We performed three studies to assess a feasibility and clinical effectivness of prehospital therapeutic hypothermia in the setting of emergency medical service in the Czech republic and to optimize cooling procedure. The selected cooling method was rapid intravenous administration of 4 řC cold normal saline. Materials and methods: Forty consecutive cardiac arrest patients were treated by prehospital administration of 4řC cold normal saline with the target dose of 15 - 20 ml/kg in a prospective multicenter study PRE-COOL (Pre-Hospital Cooling in Cardiac Arrest Patients). The results were compared with 40 retrospective control group patients who did not undergo any cooling attempt in the field. Twelve different application regimens of cold normal saline were investigated for infusion temperature changes during administration in a PRE-COOL 3 experimental "ex vivo" study to find the regimen...
|
|
|
Peripherally Inserted Central Catheter - a role of nurse
Rosypalová, Marta ; Michálek, Pavel (advisor) ; Hocková, Jana (referee)
This diploma thesis is related to peripherally inserted central venous catheters (PICC), the role of nursing staff in inserting and care of these systems. The aim of the work, which is partly based on PICC project organized by the Department of Anaesthesiology and Intensive Care Medicine, 1st Faculty of Medicine of the Charles University and General University Hospital in Prague, was to investigate the quality of life in patients with PICC after their insertion, to evaluate the incidence of complications (venous thrombosis, bacteraemia, sepsis, local infections, decubitus, disconnection of the system, mechanical complications, etc.) and compare the economic efficiency of PICC systems with other available methods. The aim of the second part of the thesis, which is unrelated to the previously mentioned project, was to reveal the awareness of nurses/paramedics on PICC catheter. This thesis has two traditional parts - theoretical and empirical. The theoretical part deals initially with the central venous catheter in general and then it describes main features of the PICC systems. The following part reviews indications, insertion techniques and potential complications associated with the PICC systems. The role of nursing staff in the insertion and maintenance of these systems is also highlighted. The...
|
guest ::
RSS feed.