Figure 1From: Hypokalemic Periodic Paralysis: a case report and review of the literatureProgression of EKG Findings. (A) The initial EKG revealed Mobitz Type I heart block. Several p-waves (solid arrows) are present that are not associated with a QRS complex. The duration of the PR interval continues to increase until a QRS is skipped (open arrow). (B) After treatment, the EKG revealed a return to a sinus rhythm.Back to article page