Pseudo P pulmonale pattern associated with severe hypokalemia

J Electrocardiol. 2020 Sep-Oct:62:113-115. doi: 10.1016/j.jelectrocard.2020.07.010. Epub 2020 Jul 22.


This study presents the case of a 54-year-old man who presented with weakness in his lower extremities and tall P waves on electrocardiography (ECG). At admission, ECG revealed tall P waves (0.32 mV, lead II) at a serum potassium level of 1.21 mmol/L. After potassium supplementation, the amplitude of P waves decreased and returned to normal. A tall P wave may not be a real P pulmonale pattern but a pseudo P pulmonale pattern associated with hypokalemia.

Keywords: Electrocardiography; Pseudo P pulmonale pattern; Severe hypokalemia.

Publication types

  • Case Reports

MeSH terms

  • Arrhythmias, Cardiac
  • Cardiomegaly
  • Electrocardiography
  • Humans
  • Hypokalemia* / complications
  • Hypokalemia* / diagnosis
  • Male
  • Middle Aged
  • Potassium


  • Potassium