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Direct current cardioversion does not cause cardiac damage: evidence from cardiac troponin T estimation
1Department of Cardiology, Mayday University Hospital, Croydon, Surrey, UK.
Heart (British Cardiac Society)
|January 6, 1999
Summary
Elective direct current (DC) cardioversion for atrial fibrillation/flutter does not cause myocardial damage. While creatine kinase levels may rise, cardiac troponin T remains undetectable, indicating no heart muscle injury.
Area of Science:
- Cardiology
- Electrophysiology
- Cardiac Electrophysiology
Background:
- Atrial fibrillation and atrial flutter are common arrhythmias.
- Cardioversion is a procedure to restore normal heart rhythm.
- Potential for myocardial damage from cardioversion requires investigation.
Purpose of the Study:
- To assess myocardial damage following elective direct current (DC) cardioversion.
- To evaluate cardiac biomarkers after DC cardioversion for atrial fibrillation/flutter.
Main Methods:
- Measured cardiac troponin T and creatine kinase levels.
- Assessed 51 patients undergoing elective DC cardioversion for chronic atrial fibrillation/flutter.
- Collected samples 20-28 hours post-procedure.
Main Results:
- Creatine kinase levels were elevated in 44 patients.
- Cardiac troponin T was undetectable in all 51 patients.
- No significant myocardial damage was indicated by troponin T levels.
Conclusions:
- Elective DC cardioversion does not result in myocardial damage.
- Cardiac troponin T is a reliable marker for detecting cardioversion-induced myocardial injury.
- The procedure is safe regarding cardiac muscle integrity.