case_images: PMC9676225_01
case_images: (A) ECG on admission to hospital: sinus tachycardia 113 bpm, normal cardiac axis, T-waves inversion in leads V1 - V3; (B) Recording from Apple Watch: narrow QRS complex tachycardia of 216 bpm with short RP interval.
case_images: fcvm-09-985421-g0001.jpg
case_images: PMC9676225_01_fcvm-09-985421-g0001.jpg
case_images: F1
case_images: ECG showed sinus tachycardia 113 bpm, normal cardiac axis, and T-waves inversion in leads V1:V3 (Figure 1A). The recording showed narrow QRS complex tachycardia of 216 bpm and short RP interval (Figure 1B), and atrioventricular nodal reentrant tachycardia (AVNRT) was recognized.