Sinus Bradycardia
| This is part of: Sinus node rhythms and arrhythmias |
| {{{locatieafbeelding}}} | |
| Atrial rate | < 60 bpm |
| Ventricular rate | same |
| Regularity | regular |
| Origin | sinus node |
| P-wave | normal |
| Effect of adenosine | slows down |
Example ECG: Sinusbradycardia of around 40 bpm.
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| Example ECG2: | |
In sinusbradycardia the sinus node fires at a slow (<60 bpm) rate. Causes of sinusbradycardia include:
- normal physiology in an athelete
- medication (beta-blockers)
- ischemia (typically inferior myocardial infarction with involvement of the sinus node artery)
- hypothermia
- hypothyroidism.