What could be the diagnosis if the electrocardiogram shows no sinus origin rhythm associated with ‘P’ waves presenting as F waves with a characteristic saw-tooth pattern, and a T wave dominated by an atrial wave?
Explanation
Answer: B - In Atrial flutter, the electrocardiogram shows no sinus origin rhythm, P’ waves are present as ‘F’ waves with a characteristic saw-tooth pattern, and the T wave is dominated by an atrial wave.
In sinus arrest, the ECG shows the sinus rhythm, long pauses, 3 or more beats missing, P waves followed by a QRS complex.
In Sinu atrial exit block, the ECG shows sinus rhythm, occasional pause, one whole complex missing, P waves usually followed by QRS complex.
In atrial fibrillation, the ECG shows no sinus rhythm, P waves absent, F waves absent or replaced by wavy /flat baseline. There will be an irregular rhythm present.
