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  • Title: [Effect of 7 d head down bed rest on cardiopulmonary circulation in human].
    Author: Wang D, Xiang Q, Shen X, Meng J, Dong Q.
    Journal: Space Med Med Eng (Beijing); 1998 Jun; 11(3):177-80. PubMed ID: 11541417.
    Abstract:
    Changes of cardiopulmonary circulation in 6 healthy young men during 7 d head down bed rest (-6 degrees HDT) were observed with the XXH-2000 lesser circulation and cardiac function instrument. Decrease of Q-j and Q-j/j-z, increase of hz, hc, and hc/hz were found during the initial 24 h. After 24 h, j-z decreased and Q-j/j-z increased. The results showed that increased pulmonary arterial pressure, increased preload of left and right heart, increased right myocardial contractility and congestion of the lungs appeared during 24 h bed rest, after which right myocardial contractility decreased. It suggests that the lesser circulation and cardiac function testing is a sensitive method for evaluating the cardiopulmonary circulation function during HDT.
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