Question

Which of the following is false as physiological change in pregnancy?

• A. Increase cardiac output
• B. Increase total protein
• C. Increase residual volume
• D. Increase GFR

Answer 1

The Correct Option is C

Step 1: Frame the task - find the option that does NOT occur in normal pregnancy among the listed adaptations.
Step 2: Review respiratory physiology - the elevated diaphragm from the gravid uterus reduces the functional residual capacity and residual volume, even though tidal volume and minute ventilation climb.
Step 3: Therefore an increase in residual volume contradicts pregnancy physiology, since the value actually falls.
Step 4: The cardiovascular rise in cardiac output, the renal rise in GFR, and protein changes are genuine pregnancy effects, isolating the false statement as the residual-volume claim. \[\boxed{\text{Increase residual volume}}\]