[Ecological groups of flatfishes of Peter the Great Bay (Japan sea) based on the analysis od species composition of myxosporidian parasites].

Comparison of myxosporidian species compositions in different flatfish species fro Peter the Great Bay showed that the flatfishes should be divided into three ecological groups--deep water (scaly-eyed plaice Acanthopsetta nadeshnyi, Korean flounder Glyptocephalus stelleri, flatheaded flounder Hippoglossoides dubius, and pinewood flounder Cleisthenes herzensteini), relatively coastal (yellow-finned sole Limanda aspera and brown sole Pseudopleuronectes herzensteini), and coastal (Japanese flounder Pseudopleuronectes yokohamae, long-snouted flounder Limanda punctatissimus, starry flounder Platichthys stellatus, and white-bellied flounder Lepidopsetta mochigarei). This division coincides in general with the previously proposed ecological classification based on the characteristics of bathymetric distribution and preference to water layers during summer period in the fishes.

[Experience with epidural anesthesia during myocardial revascularization operations].

The paper presents the results of 213 myocardial revascularization using epidural anesthesia. The used anesthesiological protocol combining intravenous proforol sedation and epidural naropine block proved to be effective and safe and ensured adequate anesthesia that made possible myocardial revascularization both without using extracorporeal circulation (transmyocardial laser revascularization, mini-invasive myocardial revascularization) and with complex repairs of the geometry of the left ventricle and cardiac valvular apparatus and provides a means for the activation of patients and extubation on the operating table in the absence of surgical complications, hemorrhages, and extracorporeal circulation procedures even after reconstructive surgery.

[Significance of tissue pH in the prognosis of postoperative complications in heart surgery patients]. / Znachenie tkanevogo pH dlia prognoza posleoperatsionnykh oslozhnenii u kardiokhirurgicheskikh bol'nykh.

Ischemia of the gastrointestinal mucosa is characterized by acidosis in the submucosal layer during the majority of interventions, which necessitates monitoring of tissue pH (pHi) of the abdominal organs during aortocoronary bypass surgery and the immediate postoperative period. The pHi was measured by gastrotonometry with a nasogastral tube (Trip catheter) and Tonocap-TC200 device (Datex Engstrom, Finland); pHi was measured in 17 patients in department of intensive care on days 1 or 2 after cardiosurgical interventions with at least 120-min artificial circulation and in 23 patients during the operation. Surgical treatment consisted in correction of acquired valvular diseases, myocardial revascularization (shunting operations), and combinations of these operations. The first stage of investigation revealed a relationship between decreased pHi level to the acid values and complicated course of the postoperative period. The second stage showed that postoperative complications occurred in 27.2% cases only in patients subjected to long artificial circulation bypass (more than 120 min). The frequency of complications were 2-fold more in the patients with tissue acidosis (pHi < 7.35) during surgery than in patients with normal and alkaline pHi values. The following complications occurred: acute pancreatitis, acute peptic ulcer, acute renal and polyorgan failure. Comparative analysis of pHi and other metabolic markers of arterial blood showed a correlation between these parameters, but pHi was more specific for the diagnosis of tissue ischemia. Hence, a low invasive highly specific method of gaseous gastrotonometry helps evaluate the blood supply to abdominal organs during and after cardiac surgery with artificial circulation and predict postoperative gastrointestinal and grave systemic complications (sepsis, acute renal failure, and polyorgan failure).