Biomaterial Database

The effect of respiratory activity on brain blood flow during exposure to +Gz acceleration. 1996

W Walichnowski, and W Kowalski, and W Bulski

Polish Air Force Institute of Aviation Medicine, Warsaw, Poland.

The effect of respiratory activity on cardiovascular system during the exposure to +Gz acceleration was studied. For simultaneous, beat to beat evaluation of central and global cerebral blood flow, the system based on modified impedance cardiography method was used. The mechanism of modulation of the central and peripheral (cerebral) venous pressures and blood flow by intrathoracic pressure changes, has been shown. The data obtained from these studies suggest that reconsideration of the respiration technique during Anti-GSM seems indispensable.

UI	MeSH Term	Description	Entries
D012119	Respiration	The act of breathing with the LUNGS, consisting of INHALATION, or the taking into the lungs of the ambient air, and of EXHALATION, or the expelling of the modified air which contains more CARBON DIOXIDE than the air taken in (Blakiston's Gould Medical Dictionary, 4th ed.). This does not include tissue respiration (	Breathing
D002307	Cardiography, Impedance	A type of impedance plethysmography in which bioelectrical impedance is measured between electrodes positioned around the neck and around the lower thorax. It is used principally to calculate stroke volume and cardiac volume, but it is also related to myocardial contractility, thoracic fluid content, and circulation to the extremities.	Impedance, Transthoracic,Plethysmography, Impedance, Transthoracic,Impedance Cardiography,Impedance Plethysmography, Transthoracic,Plethysmography, Transthoracic Impedance,Transthoracic Impedance Plethysmography,Cardiographies, Impedance,Impedance Cardiographies,Impedance Plethysmographies, Transthoracic,Impedances, Transthoracic,Plethysmographies, Transthoracic Impedance,Transthoracic Impedance,Transthoracic Impedance Plethysmographies,Transthoracic Impedances
D002496	Central Venous Pressure	The blood pressure in the central large VEINS of the body. It is distinguished from peripheral venous pressure which occurs in an extremity.	Venous Pressure, Central,Central Venous Pressures,Pressure, Central Venous,Pressures, Central Venous,Venous Pressures, Central
D002560	Cerebrovascular Circulation	The circulation of blood through the BLOOD VESSELS of the BRAIN.	Brain Blood Flow,Regional Cerebral Blood Flow,Cerebral Blood Flow,Cerebral Circulation,Cerebral Perfusion Pressure,Circulation, Cerebrovascular,Blood Flow, Brain,Blood Flow, Cerebral,Brain Blood Flows,Cerebral Blood Flows,Cerebral Circulations,Cerebral Perfusion Pressures,Circulation, Cerebral,Flow, Brain Blood,Flow, Cerebral Blood,Perfusion Pressure, Cerebral,Pressure, Cerebral Perfusion
D006439	Hemodynamics	The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.	Hemodynamic
D006801	Humans	Members of the species Homo sapiens.	Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D000054	Acceleration	An increase in the rate of speed.	Accelerations
D000337	Aerospace Medicine	That branch of medicine dealing with the studies and effects of flight through the atmosphere or in space upon the human body and with the prevention or cure of physiological or psychological malfunctions arising from these effects. (from NASA Thesaurus)	Aviation Medicine,Space Medicine,Medicine, Aerospace,Medicine, Aviation,Medicine, Space
D014636	Valsalva Maneuver	Forced expiratory effort against a closed GLOTTIS.	Valsalva's Maneuver,Maneuver, Valsalva,Maneuver, Valsalva's,Maneuvers, Valsalva,Valsalva Maneuvers