October 10, 2012EP Europace
Diagnosis of atrial tachycardias originating from the lower right atrium: importance of P-wave morphology in the precordial leads V3–V6
Key result
A negative P-wave morphology in leads V3-V6 accurately identified atrial tachycardias originating from the coronary sinus ostium and lower tricuspid annulus (91% sensitivity, 100% specificity).
Why the study?
Does P-wave morphology in leads V3-V6 accurately differentiate the anatomic sites of focal atrial tachycardia originating from the lower right atrium?
Population
28 consecutive patients with focal atrial tachycardia originating from the lower right atrium
Design
Cohort
Authors
Discussion
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Implication
May aid ECG localization for focal AT ablation; leaves open need for prospective validation.
Study Design
Type
Observational (n=28)
Structured PICO
Does P-wave morphology in leads V3-V6 accurately differentiate the anatomic sites of focal atrial tachycardia originating from the lower right atrium?
P
Population
28 consecutive patients with focal atrial tachycardia originating from the lower right atrium
I
Intervention
Standard 12-lead electrocardiogram analysis of P-wave morphology in leads V3-V6
O
Outcome
Diagnostic accuracy (sensitivity, specificity, PPV, NPV) of P-wave morphology in leads V3-V6 for differentiating anatomic sites of lower RA atrial tachycardiasurrogate
P-wave morphology in precordial leads V3-V6 can accurately differentiate the specific anatomic sites of focal atrial tachycardia originating from the lower right atrium.
Cite This Study
Huo et al. (2012) conducted an observational in Focal atrial tachycardia originating from the lower right atrium (n=28). P-wave morphology analysis in leads V3-V6 was evaluated on Diagnostic accuracy (sensitivity, specificity, PPV, NPV) of P-wave morphology for localizing atrial tachycardia origin. A negative P-wave morphology in leads V3-V6 accurately identified atrial tachycardias originating from the coronary sinus ostium and lower tricuspid annulus (91% sensitivity, 100% specificity).