A 72-year-old man with COPD presents with palpitations and dyspnea. Vital signs: BP 138/82 mmHg, HR 150/min, RR 22/min, SpO2 94% on room air, temperature 37.2°C. ECG reveals regular atrial activity at 300 bpm with characteristic sawtooth flutter waves and ventricular rate of 150 bpm. Troponin is normal. He denies chest pain. Which of the following is the most likely diagnosis?
- A)Torsades de pointes
- B)Cardiogenic shock
- C)AV nodal reentrant tachycardia
- D)Wolff Parkinson White syndrome
- E)Atrial flutterGABARITO
Explicação
Atrial flutter is correct. Sawtooth flutter waves with an atrial rate around 300 per minute are classic for macroreentrant atrial flutter. The ventricular response of 150 per minute suggests 2 to 1 AV conduction. Ver explicação completa e trilha adaptativa →