When explaining a cystometry test to measure bladder pressure during filling and voiding in a normal adult, the nurse informs the nursing students that the normal capacity when adults have a desire to void is
A)
100 to 150 mL.
B)
200 to 250 mL.
C)
300 to 399 mL.
D)
400 to 500 mL.
Ans:
D
Feedback:
The desire to void occurs when the bladder is full (normal capacity is approximately 400 to 500 mL). At this point, a definite sensation of fullness occurs; the pressure rises sharply to 40 to 100 cm H2O; and voiding occurs around the catheter.
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