Short bowel syndrome electrocardiogram

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Sadaf Sharfaei M.D.[2]

Overview

There are no ECG findings associated with short bowel syndrome. In case of malnutrition and electrolyte imbalance, an ECG may be helpful.

Electrocardiogram

• There are no ECG findings associated with short bowel syndrome.
• In case of malnutrition and electrolyte imbalance, an ECG may be helpful.
• Findings on an ECG suggestive of hypokalemia in a patient with short bowel syndrome include:
  • ST segment depression
  • Low T wave
  • Prominent U waves
  • Prolongation of the QRS duration
  • Increase in the amplitude and duration of the P-wave
  • Cardiac arrhythmias and AV block
  • Ventricular ectopy

An ECG in a person with a potassium level of 1.1 showing the classical ECG changes of ST segment depression, inverted T waves, large U waves, and a slightly prolonged PR interval. By James Heilman, MD - Own work, CC BY-SA 3.0

• Findings on an ECG suggestive of hypocalcemia in a patient with short bowel syndrome include:
  • Narrow QRS complex
  • Prolongation of the QT interval
• Findings on an ECG suggestive of hypomagnesemia in a patient with short bowel syndrome include:
  • Prolongation of the QT interval
  • AV block
  • Atrial ectopy
  • Supraventricular tachycardia
  • Ventricular ectopy
  • Torsades de pointes