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Biomedical subjects

V I Astaf'ev

Publications and source records attributed to V I Astaf'ev.

At least 19 recordsLinked to original sources
PubMed1983

[Diastolic filling of the heart ventricle].

It is demonstrated that negative, "subatmospheric" pressure developing in the heart ventricles during the rapid-filling phase is an evidence of active diastole and inflated capacity of heart chambers. Diastolic activity of the heart increases as a result of insufficient blood inflow to the ventricles coupled with inadequate venous return or narrowed atrioventricular orifice. It is assumed that the heart's diastolic activity is an adaptive-compensatory mechanism adequately stabilizing circulation under changing hemodynamic conditions.

Blood Pressure↗
PubMed1983

[Ultrasonography in the diagnosis of acute cholecystitis].

Data of ultrasonic scanning of 117 patients with acute cholecystitis are analyzed. The gallbladder was visualized in 95,7% of examinations. Operations were performed on 38 patients. Gallstones were revealed by echosonography in 94,7% of cases. Echosonography should be widely used in diagnosis of acute cholecystitis and in analysing the indications for surgical treatment.

Acute Disease↗