case_images: PMC6139209_01
case_images: Baseline EKG. Normal sinus rhythm with a short PR interval.
case_images: CRIC2018-5265298.001.jpg
case_images: PMC6139209_01_CRIC2018-5265298.001.jpg
case_images: fig1
case_images: Prior EKGs had been without abnormal findings (Figure 1). The patient's baseline EKG prior to his presentation showed a normal sinus rhythm with a PR interval of 152 msec (Figure 1).
case_images: EKG on admission shows coarse atrial fibrillation with a slow ventricular response. Whereas the tracings in the precordial leads to appear organized, the tracing in lead II suggests coarse atrial fibrillation.
case_images: CRIC2018-5265298.002.jpg
case_images: PMC6139209_01_CRIC2018-5265298.002.jpg
case_images: fig2
case_images: The initial EKG on admission revealed coarse atrial fibrillation with a ventricular rate of 60 beats per minute (Figure 2).
case_images: Profound PR prolongation.
case_images: CRIC2018-5265298.003.jpg
case_images: PMC6139209_01_CRIC2018-5265298.003.jpg
case_images: fig3
case_images: Additionally, on hospital day 2, telemetry monitoring and EKG revealed spontaneous conversion to normal sinus rhythm with a profoundly prolonged PR interval of 460 msec (Figure 3).