58.已知一個人心跳速率為60 beats/min,其心搏輸出量(stroke volume)為70 mL,肺毛細血管楔壓(PCWP)為
10 mm Hg,肺血管阻力(PVR)為2 mm Hg/L/min,則其平均肺動脈壓為多少mm Hg?
(A)16.2
(B)18.4
(C)25.6
(D)30.4
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統計: A(45), B(427), C(85), D(32), E(0) #2180632
統計: A(45), B(427), C(85), D(32), E(0) #2180632
詳解 (共 2 筆)
#4762338
呼吸照護解剖與生理 3. P.116
PVR = (平均PAP - PCWP ) / Qt (肺血流)
Qt =70*60 =4200 ml/min =4.2 L/min
平均PAP = 2 *4.2 +10 = 18.4
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