Arrhythmias & electrophysiology
A Single Atrial Extrastimulation Resetting His Bundle During Supraventricular Tachycardia to Differentiate Atrial Tachycardia
Authors' conclusion
Single atrial extrastimulation from the proximal coronary sinus during tachycardia was useful and effective for AT diagnosis.
Study context
- Population
- Paroxysmal supraventricular tachycardia (SVTs) (28 atrial tachycardia (AT), 87 AV nodal re-entrant tachycardias, 32 orthodromic reciprocating tachycardias); single atrial extrastimulation from proximal coronary sinus
- Participants
- 147 SVTs
- Comparison
- Single atrial extrastimulation response patterns for AT vs non-AT diagnosis
- Outcome
- Diagnostic performance
Methodological detailsprospective
- Prospective
Performance
As reported in the abstract
| Test or model | Value | Sensitivity | Specificity | PPV | NPV |
|---|---|---|---|---|---|
| Tachycardia unaffected when His bundle (HB) resetting | 27 events | 96% | 100% | 100% | 99% |
| Termination with atrio-Hisian block | 33 events | 92% | 100% | 100% | 42% |
Value
Tachycardia unaffected when His bundle (HB) resetting27 events
Termination with atrio-Hisian block33 events
Sensitivity
Tachycardia unaffected when His bundle (HB) resetting96%
Termination with atrio-Hisian block92%
Specificity
Tachycardia unaffected when His bundle (HB) resetting100%
Termination with atrio-Hisian block100%
PPV
Tachycardia unaffected when His bundle (HB) resetting100%
Termination with atrio-Hisian block100%
NPV
Tachycardia unaffected when His bundle (HB) resetting99%
Termination with atrio-Hisian block42%
- ATs unaffected when HB resetting
- 27 of 28
- SVTs terminated with atrio-Hisian block that were non-AT
- 33
- Terminated with Hisian-atrial block: AT
- 5
- Terminated with Hisian-atrial block: non-AT
- 7
Original publication
A Single Atrial Extrastimulation Resetting His Bundle During Supraventricular Tachycardia to Differentiate Atrial Tachycardia. JACC Clin Electrophysiol. Published 27 March 2024. doi:10.
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