During the Valsalva manoeuvre (forced expiration with glottis closed)�

1.	During the Valsalva manoeuvre (forced expiration with glottis closed) A. Pressure rises in the urinary bladder. B. The initial rise in arterial pressure coincides with a fall in the rate of venous return. C. Cardiac output rises. D. Heart rate slows. E. Peripheral resistance rises.
Answer» A. True Due to the rise in intra-abdominal pressure. B. True Both result from the sudden initial rise in intrathoracic pressure. C. False It falls due to the reduced venous return. D. False It rises to compensate for a falling arterial pressure. E. True Another reflex compensatory mechanism to restore arterial pressure.

During the Valsalva manoeuvre (forced expiration with glottis closed) A. Pressure rises in the urinary bladder. B. The initial rise in arterial pressure coincides with a fall in the rate of venous return. C. Cardiac output rises. D. Heart rate slows. E. Peripheral resistance rises.

Answer»

A. True Due to the rise in intra-abdominal pressure.

B. True Both result from the sudden initial rise in intrathoracic pressure.

C. False It falls due to the reduced venous return.

D. False It rises to compensate for a falling arterial pressure.

E. True Another reflex compensatory mechanism to restore arterial pressure.

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During the Valsalva manoeuvre (forced expiration with glottis closed) A. Pressure rises in the urinary bladder. B. The initial rise in arterial pressure coincides with a fall in the rate of venous return. C. Cardiac output rises. D. Heart rate slows. E. Peripheral resistance rises.

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