Ventricular parasystole in healthy hearts

Myburgh, D. P.; Lewis, Basil S.

doi:10.1016/0002-8703(71)90296-1

Cited by 15 publications

(3 citation statements)

References 18 publications

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“…marked variation in the coupling of the ectopic beats; (2) regular appearance of the ectopic beats; and (3) appearance of combination, fusion, or summation beats. [4] Accordingly, a diagnosis of VP was clear in this case. Although VP is per se rarely hemodynamically relevant, it could induce symptomatic ventricular tachycardia and fibrillation in some situations; thus, radiofrequency ablation is amenable in the case of failure of anti-arrhythmic agents [5, 6].…”

Section: Results and Conclusionmentioning

confidence: 62%

“…Ventricular parasystole (VP) is defined as a dual rhythm wherein an ectopic pacemaker is in some way protected from the impulse of the sinus pacemaker. It is not rare in the clinical setting, especially in disease heart, and it is easily confused with simple PVC [4]. When the coupling interval is matched, VP can form a stable fusion QRS complex with sinus rhythm.…”

Section: Introductionmentioning

confidence: 99%

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Ablation of unmappable ventricular parasystole originating from the right ventricular outflow tract: a case report

Wang

2019

BMC Cardiovasc Disord

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BackgroundWhen the coupling interval is matched, ventricular parasystole can form a stable fusion QRS complex with sinus rhythm. Ablation of a fusion QRS complex has been rarely reported and is unexpectedly difficult.Case presentationWe describe a case of ventricular parasystole from muscle sleeves of the right ventricular outflow tract. The patient was a 54-year-old woman who was admitted to the hospital because of frequent palpitations for 3 months. Anti-arrhythmic drugs had been ineffective, and she had no history of cardiovascular disease. Because the fusion QRS complex interfered with the conventional mapping technique, we could not eliminate the ventricular parasystole successfully.Results and conclusionsFinally, we used the reversed U curve method and found that the source of ventricular arrhythmia was in the right cusp according to the special local potential. A fusion QRS complex formed by ventricular parasystole and nodal ventricular activation make mapping and ablation difficult. The special local potential was the only evidence available to confirm the target of ablation satisfactorily.

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Section: Results and Conclusionmentioning

confidence: 62%

Section: Introductionmentioning

confidence: 99%

Ablation of unmappable ventricular parasystole originating from the right ventricular outflow tract: a case report

Wang

2019

BMC Cardiovasc Disord

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“…By 1970 there was an increase to 158 physicians/100,000.2 Yet there was a more widespread be¬ lief in 1970 than in I960 that the United States had a doctor shortage. 6. Now that HR 1 with the Bennett amendment has become law, many more physicians will join those who have left active practice to become administrators.…”

Section: Electrical Disorders Of the Heartmentioning

confidence: 99%