Journal article
Cardiac troponin T does not increase after electrical cardioversion for atrial fibrillation or atrial flutter
Heart, Vol.80(3), pp.226-228
1998
Abstract
Objective-To determine whether cardiac troponin T increases after electrical cardioversion in patients with atrial fibrillationor atrial flutter. Design-Serum creatine kinase (CK), creatine kinase-MB (CKMB), and cardiac troponin T were measured before, 24 hours, and 48 hours after cardioversion in 15 patients with atrial fibrillation or atrial flutter. Results-12 of the 15 patients (80%) were successfully cardioverted to sinus rhythm. The median number of shocks was three (range one to six), the median cumulative energy 710 J (50 to 1430 J), and the median peak energy 300 J (50 to 360 J). Total CK increased from a baseline median concentration of 92 (45 to 259) to 1324 (96 to 6660) U/l at 24 hours and 1529 (120 to 4774) U/l at 48 hours after cardioversion. There was a small increase in CKMB but the ratio of CKMB to CK did not increase. There was no increase in cardiac troponin T in any patient. Conclusions-Following electrical cardioversion of atrial fibrillation or atrial flutter, cardiac troponin T remains unchanged despite a large rise in total CK, indicating that the CK is derived from skeletal muscle and that myocardial injury does not occur. If cardiac troponin T is increased after cardioversion for atrial arrhythmias then other causes of myocardial damage should be sought.
Details
- Title
- Cardiac troponin T does not increase after electrical cardioversion for atrial fibrillation or atrial flutter
- Authors
- Kim Greaves (Author) - St Bartholomew's Hospital, United KingdomT Crake (Author) - North Middlesex Hospital, United Kingdom
- Publication details
- Heart, Vol.80(3), pp.226-228
- Publisher
- B M J Group
- Date published
- 1998
- DOI
- 10.1136/hrt.80.3.226
- ISSN
- 1355-6037
- Organisation Unit
- Faculty of Science, Health, Education and Engineering; University of the Sunshine Coast, Queensland
- Language
- English
- Record Identifier
- 99449365102621
- Output Type
- Journal article
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- Cardiac & Cardiovascular Systems
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