Sinus bradycardia
An ECG at Age 64
ECG from a 64-year-old woman. Symptoms and the reason for recording are not supplied.
Look for
- Sinus P waves preceding the QRS complexes.
- Adult heart rate below 60/min.
Where to look. In lead II, find P before each QRS; measure R–R intervals using the paper speed.
The rhythm is sinus but slow. Rate alone cannot establish its cause or whether it explains symptoms.
The source rate is 49/min; fatigue or other symptoms are not documented.
References & provenance
The ECG Made Easy, 9e, ch. 4, PDF 91–93; Lilly, 6e, ch. 12, p. 288.
ECG Sinus Bradycardia 49 bpm.jpg
ECG Sinus Bradycardia 49 bpm.jpg — Ewingdo — Wikimedia Commons — CC BY-SA 4.0 — https://commons.wikimedia.org/wiki/File:ECG_Sinus_Bradycardia_49_bpm.jpg. Indiquer toute modification. CC BY-SA 4.0
Adaptation: cropping and removal of headers/annotations outside the tracing where applicable; metadata removed. Waveforms have not been redrawn.
Compared with the published source; no independent clinical validation is claimed.
Original annotations & limitations
Bradycardie sinusale
ECG of a 64-year-old female with sinus bradycardia. Heart rate 49 bpm, QT/QTc 488/440 ms
Âge et sexe authentiques; fatigue et symptômes non documentés. Alignement au rythme seulement, pas au contexte d’asthénie.