A 60-year-old man with a history of hypertension presents after sudden collapse following severe substernal chest pain. On arrival, he is unresponsive and pulseless with BP unrecordable, HR unmeasurable, RR 0, and SpO2 undetectable. Cardiac monitor displays chaotic, irregular deflections without organized QRS complexes. Troponin is elevated at 2.8 ng/mL. There is no evidence of pulmonary edema on examination. He takes no anticoagulation therapy. Which rhythm is most likely present?
- A)Third-degree AV block
- B)Atrial fibrillation
- C)Ventricular fibrillationGABARITO
- D)Pulseless electrical activity
- E)Asystole
Explicação
Ventricular fibrillation is a disorganized ventricular rhythm with no effective cardiac output and no identifiable organized QRS complexes. It is a common cause of sudden cardiac arrest in acute ischemia and requires immediate defibrillation. Ver explicação completa e trilha adaptativa →