In hypokalemia, which gastrointestinal finding is most likely?

In hypokalemia, which gastrointestinal finding is most likely?

• A. Diarrhea
• B. Constipation
• C. Hyperactive bowel sounds
• D. Nausea

Answer: (B)

Low potassium slows the muscle activity of the GI tract. Hypokalemia reduces smooth muscle excitability, so peristalsis decreases and bowel movements become sluggish, leading to constipation and often hypoactive or diminished bowel sounds. Diarrhea or hyperactive sounds would indicate increased motility, which isn’t typical in hypokalemia, and while nausea can occur, constipation is the most characteristic finding. Restoring potassium helps normalize GI motility and resolves the constipation.

Low potassium slows the muscle activity of the GI tract. Hypokalemia reduces smooth muscle excitability, so peristalsis decreases and bowel movements become sluggish, leading to constipation and often hypoactive or diminished bowel sounds. Diarrhea or hyperactive sounds would indicate increased motility, which isn’t typical in hypokalemia, and while nausea can occur, constipation is the most characteristic finding. Restoring potassium helps normalize GI motility and resolves the constipation.