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Sinus tachycardia and J wave masquerading as atrial flutter
J C García-Rubira1, J J Gómez-Barrado, D Romero
1Coronary Care Unit, University Hospital Virgen Macarena, Sevilla, Spain.
International Journal of Cardiology
|November 24, 1995
Summary
An initial ECG suggested atrial flutter in a severe heart failure patient. Further analysis revealed sinus tachycardia with J waves, not flutter waves, improving diagnosis.
Area of Science:
- Cardiology
- Electrophysiology
- Internal Medicine
Background:
- Electrocardiogram (ECG) interpretation is crucial for diagnosing cardiac conditions.
- Atrial flutter can be mistaken for other arrhythmias, impacting treatment.
- Severe heart failure presents diagnostic challenges in ECG analysis.
Observation:
- An initial ECG in a patient with severe heart failure was interpreted as atrial flutter with 2:1 atrioventricular conduction.
- Subsequent slowing of the heart rate allowed for a more detailed ECG analysis.
- Prominent waves were noted during the initial interpretation.
Findings:
- The definitive diagnosis revealed sinus tachycardia, not atrial flutter.
- The waves initially identified as 'F' waves were confirmed to be 'J' waves.
- This ECG finding is associated with specific cardiac states.
Implications:
- Accurate ECG interpretation is vital for appropriate patient management.
- Recognizing 'J' waves in the context of sinus tachycardia can prevent misdiagnosis of atrial flutter.
- This case highlights the importance of reassessing ECG findings when clinical parameters change.