Recognition
- • Narrow complex tachycardia 150–250
- • Regular
- • Absent or retrograde P (pseudo-R' in V1)
Key findings
- • Sudden onset/offset
- • Often <40 yr or accessory pathway
Clinical importance
- • Usually haemodynamically tolerated
- • Synchronised DC if unstable
Management pearls
- • Vagal manoeuvres (Valsalva, carotid massage)
- • Adenosine 6 mg → 12 mg → 12 mg IV
- • Verapamil or β-blocker
- • Synchronised cardioversion if unstable
