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High maintenance rate of sinus rhythm after cardioversion in post-thyrotoxic chronic atrial fibrillation
- Source :
- International Journal of Cardiology. 16:47-55
- Publication Year :
- 1987
- Publisher :
- Elsevier BV, 1987.
-
Abstract
- We performed rhythm conversion on 33 euthyroid patients with post-thyrotoxic atrial fibrillation who do not revert spontaneously to sinus rhythm from atrial fibrillation. The duration of atrial fibrillation ranged from 9 to 59 months (mean 25 ± 14). The protocol of rhythm conversion was to first attempt pharmacological conversion with disopyramide and then to perform electrical cardioversion on the non-converters. Of 33 patients, 25 were converted to sinus rhythm (6 by disopyramide and 19 by electrical cardioversion), resulting in 8 non-converters. However, it was later discovered that cardioversion had been applied to 4 of the 8 non-converters when these patients had had a recurrence of thyrotoxicosis. These 4 patients were subjected to a second electrical cardioversion after attaining the euthyroid state. Sinus rhythm was restored in all 4 patients, giving a cardioversion rate of 88%. The sinus rhythm was maintained in 25 of the total 29 converters (86%) at the time of follow-up (10–68 months, mean 35 ± 19 months). Our studies suggest that cardioversion should be encouraged for thyrotoxic atrial fibrillation, even if the duration of atrial fibrillation is long-standing, since there is excellent maintenance of sinus rhythm and even delayed application of cardioversion may improve its success rate.
- Subjects :
- Adult
Male
medicine.medical_specialty
medicine.medical_treatment
Electric Countershock
Cardioversion
Electrocardiography
Rhythm
Recurrence
Internal medicine
Atrial Fibrillation
medicine
Humans
Chronic atrial fibrillation
Sinus rhythm
Euthyroid
business.industry
Atrial fibrillation
Middle Aged
medicine.disease
Thyrotoxicosis
Duration (music)
Anesthesia
Chronic Disease
Cardiology
Female
Cardiology and Cardiovascular Medicine
Disopyramide
business
medicine.drug
Subjects
Details
- ISSN :
- 01675273
- Volume :
- 16
- Database :
- OpenAIRE
- Journal :
- International Journal of Cardiology
- Accession number :
- edsair.doi.dedup.....9f219523b55b5ac72243640a7410b6a0