FUNDAMENTALS OF ANESTHESIOLOGY AND REANIMATOLOGY
Objective. To choose the optimum technique of general anesthesia in the surgical treatment of patients with postinfarct left ventricular aneurysms (PLVA).
Materials and methods. Fifty-four patients operated on for PLVA were examined. They were divided into 4 groups according to the basic technique of general anesthesia: 1) intravenous anesthesia based on propofol and fentanyl; 2) inhalation sevoflurane anesthesia with fentanyl enhancement of the analgesic component; 3) inhalation isoflurane anesthesia with fentanyl enhancement of the analgesic component; 4) general anesthesia in combination with epidural blockade. Central hemodynamics was investigated by the thermodilution technique and the perioperative period was also studied.
Results and discussion. None of the general anesthesia techniques affected the development of perioperative complications. However, with decreased myocardial reserves, high thoracic epidural anesthesia should be applied with caution as it causes a significant desympathization, which may lead to impairments of the autoregulatory mechanisms of coronary blood flow and aggravate existing contractile disorders. Intravenous and inhalation anesthesia techniques provide a fair hemodynamic stability at all stages of surgical treatment. Inhalation anesthesia has a number of advantages: less cost and the possibility of rapid activation of patients in the early postoperative period.
ACUTE RESPIRATORY FAILURE
The outcomes of treatment of aspiration damages to the tracheobronchial tree, by performing the goal3oriented endo3
bronchial perfluorane treatment were analyzed in victims with severe brain injury. The specific features of the time course of
pathological tracheal and bronchial mucosal changes were defined during the therapy performed. The determinants of the
efficiency of endobronchial perfluorane therapy were determined in the treatment of tracheal and bronchial damages of aspi3
ration genesis.
Objective. To comparatively analyze pressure controlled ventilation (PCV) and pressure controlled and guaranteed vol3 ume ventilation (VAPS) in the postoperative period. 26 neonatal infants with various surgical diseases treated at the intensive care unit, N. F. Filatov City Clinical Hospital 13, were examined. According to the type of artificial ventilation (AV), the patients were divided into 2 equal groups. Groups 1 and 2 infants received VAPS and PCV, respectively.
The results indicated that for normal gas exchange, less oxygen concentrations may be used during VAPS than during PCV. The mean airways pressure during VAPS that provides adequate ventilation and satisfactory gas exchange is noticeably less than that during PCV.
The paper presents the results of a comparative study of different methods for preventing respiratory distress after laparoscopic cholecystectomy. It shows the advantages of use of noninvasive assisted ventilation that ensures excessive positive pressure in the respiratory contour, its impact on external respiratory function, arterial blood gases, oxygen transport and uptake. A scheme for the prevention of respiratory diseases applying noninvasive assisted ventilation is given.
POISONINGS AND INTOXICATIONS
FOR PRACTIONER
Objective: to determine the sensitivity and specificity of combined stress echocardiography (EchoCG) using dipyri-damole and dobutamine in diagnosing and defining the extent of stenotic coronary lesions in coronary heart disease (CHD) in a group of critically ill patients who are unable to perform a physical exercise.
Materials and methods: the study included 57 male patients with suspected acute coronary syndrome who underwent stress EchoCG using dipyridamole in high doses in combination with dobutamine, as well as coronary angiography.
Results: stress EchoCG could bring up to the diagnostic criteria in all the patients, of whom 9 patients were found at coronary angiography to have no coronary lesion, 34 and 14 patients had one- and many-vessel lesions, respectively. The sensitivity and specificity of combined stress EchoCG were significantly higher than those of EchoCG used in the diagnosis of CHD.
Conclusion: stress EchoCG using dipyridamole in combination with dobutamine is a highly informative safe noninvasive technique for diagnosing CHD, its helps to identify patients with atypical acute coronary syndrome and to form a group of patients to be subject to urgent coronarography and angiosurgical intervention. The pattern of segmental contractile disorders at the height of exercise during combined stress Echo-CG makes it possible to define the site of stenotic coronary atherosclerosis with 97.3% sensitivity and to diagnose many-vessel lesion with 100% sensitivity and 100%specificity.
REVIEWS & SHORT COMMUNICATIONS
Objective. To present currently available information on the use of transpulmonary thermodilution, a new type of volumetric monitoring of hemodynamics.
Materials and methods. The data available in the Russian and foreign medical literature on this problem are analyzed.
Results. In the past recent years, transpulmonary thermodilution has come into wide use in modern anesthesiology and reanimatology, including during aortocoronary bypass surgery, correction of cardiac defects, and cardiac transplantation. The values obtained by transpulmonary thermodilution correlate with the results of other monitoring methods and can extend the capabilities of diagnosis of systemic and pulmonary hemodynamic disorders. The introduction of therapeutic algorithms based on the results of volumetric monitoring makes it possible to perform intensive therapy of cardio-surgical patients purposefully (infusion load, inotropic and vasopressor support, use of diuretics), which can improve a clinical outcome.
Conclusion. The use of transpulmonary thermodilution-based volumetric monitoring during cardiosurgical interventions assures adequate control of the values of preload, myocardial contractility, pulmonary circulation, and vascular tone, which allows one to develop a differential approach to correcting hemodynamics in the perioperative period.
ISSN 2411-7110 (Online)