[Contractile function of the left ventricle of the heart in increased pressure of the gas medium].
The hyperbaric effect on the contractile function of the left ventricle of the heart was examined in 16 test subjects by means of polycardiography. In a compressed air atmosphere (P = 0.5 MPa for 30 min), systolic time intervals varied. In a hyperbaric normoxic (N2 - O2) atmosphere, the changes were less expressed. In a medical oxygen atmosphere at a normal barometric pressure, the adverse effect on the left ventricle contractile function was least pronounced. It is concluded that hyperbaria, increased gas density, and hyperoxia produce a pathogenic effect on the heart; during short-term exposure increased gas density has the strongest effect.
Kuleshov
V I
VI
Namlinskiĭ
Iu V
IuV
D000328:Adult; D001273:Atmosphere Exposure Chambers; D002303:Cardiac Output, Low / Q000209:etiology*; D006801:Humans; D006931:Hyperbaric Oxygenation / Q000009:adverse effects; D008297:Male; D008955:Models, Cardiovascular; D010100:Oxygen / Q000008:administration & dosage*; D013997:Time Factors; D016277:Ventricular Function, Left / Q000502:physiology*
D010100:Oxygen
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