Quiz: Postpartum System Changes — 4 questions

1. By approximately when is fluid and electrolyte balance generally restored to non-pregnant homeostasis after birth?

A. By 7 days after delivery

B. By 14 days after delivery

C. By 21 days after delivery

D. Within 24 hours after delivery

Answer: (C)

Explanation

Fluid and electrolyte balance generally returns to the non-pregnant state by 21 days postpartum. The earlier intervals underestimate the usual time required for restoration of homeostasis.

2. When does the first postpartum bowel movement usually occur?

A. Within 7–10 days after birth

B. Within the first 6 hours after birth

C. Within 2–3 days after birth

D. Within 12–24 hours after birth

Answer: (C)

Explanation

The first bowel movement usually occurs within 2–3 days postpartum. Haemorrhoids may make this bowel movement more difficult, but they do not determine its usual timing.

3. Which physiological change increases a woman’s risk of constipation after birth?

A. Increased gastrointestinal muscle tone caused by rising postpartum progesterone

B. Increased bowel lubrication caused by reduced abdominal relaxation

C. Accelerated intestinal transit resulting from abdominal muscle contraction

D. Reduced gastrointestinal muscle tone related to progesterone and abdominal relaxation

Answer: (D)

Explanation

Progesterone-related reduction in gastrointestinal muscle tone, together with abdominal relaxation, makes constipation more likely after birth. This mechanism explains constipation risk rather than predicting the timing of the first bowel movement.

4. Why does urine production increase markedly during postpartum days 2–5?

A. Renal blood flow remains reduced after placental delivery

B. Lactation causes progressive dehydration of maternal tissues

C. Pregnancy-related sodium and water retention is being reversed

D. Abdominal pressure continues to compress the urinary tract

Answer: (C)

Explanation

Rapid diuresis during days 2–5 reflects reversal of the sodium and water retained during pregnancy. Reduced renal blood flow would not explain this characteristic postpartum increase in urine production.