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Junctional Tachycardia
Related Subjects: |Supraventricular Tachycardia (SVT) |Atrial Flutter |Atrial Fibrillation |Sinus Tachycardia |Multifocal Atrial Tachycardia |Junctional Tachycardia
ℹ️ About
- Most often physiological or anxiety
- Tachycardia from the AV node
ECG
- Rate: 100 -180 beats/min
- Rhythm: regular atrial and ventricular firing
- PR: often not measurable unless P wave comes before QRS; then will be short (<0.12 secs)
- P waves: often obscured; may propagate antegrade or retrograde with origin at the junction; may arise before, after, or with the QRS
- QRS complex: narrow; =0.10 secs in absence of intraventricular conduction defect
Junctional
Causes
- AV Nodal reentrant tachycardia
- AV re-entrant tachycardia
🔎 Investigations
- Acute setting; ECG, U&E, LFTS, TFTs
💊 Management
- May be physiological and not require treatment.
- Review medications and causes
- Will depend upon symptoms and observations.
- Beta Blockers may be used if very symptomatic
| The content on this website is provided for educational and informational purposes only to support exam preparation (e.g., MLA, MRCP, USMLE) and learning. This is NOT medical advice, diagnosis, treatment, or professional guidance. It does not replace consultation with a qualified healthcare professional, official guidelines (e.g., NICE, GMC, BNF), or supervised clinical practice. Always verify information with current, authoritative sources. Makindo and its contributors accept no liability for any reliance on this content, including errors, omissions, or any resulting harm, loss, or consequences. By using this site, you agree to these terms. |
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