Galina Fomina

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The objectives of this investigation were to study the effects of thigh cuffs (bracelets) on cardiovascular adaptation and deconditioning in 0 g. The cardiovascular parameters of six cosmonauts were measured by echocardiography, Doppler, and plethysmography, during three 6-month MIR spaceflights. Measurements were made at rest during preflight (−30 days),(More)
The objective of this investigation was to identify the major cardiovascular changes induced by exposure to real or simulated 0g (spaceflights: 6, 14, 21 and 25 days, and 6 months; head down tilt, HDT: 10 h, 4, 5, 7, 30 and 42 days), with a minimum of countermeasures. The following cardiovascular data were measured by echocardiography and Doppler(More)
Objectives & method: (1) assess the main cardiac and vascular hemodynamic changes induced by the 0.g. (2) evaluate, the astronaut orthostatic tolerance, inflight, using LBNP. The ultrasound device "" with Echo, Doppler, TM, & plethysmograph modes was used.
The objectives were to evaluate cardiac and peripheral changes induced by microgravity with and without countermeasures (CM), to assess the peripheral response to orthostatic tests (tilt, LBNP). Inflight or HDT, we used echography and Doppler to assess the left heart function and the peripheral arteries. We studied the cardiovascular system during 1) 21-d(More)
UNLABELLED Cardiovascular adaptation was evaluated on 2 astronauts: one wearing thigh cuffs from flight day 1 to 8 (14d flight), the second without cuffs (21d flight). Ultrasound investigations were performed at rest and during LBNP. RESULTS Without thigh cuffs the cardiovascular adaptation consists in (1) the development of a hypovolemia with an increase(More)
Thigh cuffs, presently named "bracelets," consist of two straps fixed to the upper part of each thigh, applying a pressure of 30 mmHg. The objective was to evaluate the cardiac, arterial, and venous changes in a group of subjects in head-down tilt (HDT) for 7 days by using thigh cuffs during the daytime, and in a control group not using cuffs. The(More)
Ultrasound examinations have been performed on 15 cosmonauts who have remained in orbit for flights ranging from 2.5 to 8 months in duration. Soviet researchers have combined hemodynamic assessments with parallel attempts to develop improved ultrasound techniques and equipment for use onboard space stations. These techniques and equipment are reviewed, as(More)
The goal of this study was to analyze and generalize hemodynamic data collected over 20 years from 26 cosmonauts, who had flown from 8 to 438 days aboard orbital stations Salut-7 and Mir. This paper describes the results of ultrasonographic studies of the heart and arterial and venous peripheral vessels in different parts of human body as well as the study(More)
Purpose of this work was to elicit the role of hypovolemia in the development of hemodynamic shifts and loss of orthostatic tolerance in humans during prolonged space flights (PSF). Correlation analysis of the data of in-flight ultrasonic investigations of hemodynamics in resting cosmonauts and bio-impedance measurements of body liquids in different periods(More)
Ultrasound Doppler imaging and electrocardiography were used to study hemodynamic responses to spaceflight onboard the Mir space station. Cardiovascular adaptation was studied at rest and during the use of thigh cuffs or "Bracelets" for weightlessness countermeasures. Specific changes in hemodynamic parameters are presented and discussed, along with an(More)