Rationale: Endovascular embolization has been widely applied in carotid artery aneurysm due to less trauma and simpler procedures than open surgery. Sudden cardiac arrest is a rare event that may cause severe consequences during endovascular embolization. Risk factors of perioperative cardiac arrest include cardiac surgery, younger age, comorbid conditions, and emergency surgery.
Patient concerns: A 62-year-old male patient had hypertension for 15 years and experienced sudden cardiac arrest of pulseless electrical activity during endovascular embolization.
Diagnoses: He was diagnosed with a 3.5 × 2.5 mm aneurysm.
Interventions: Chest compression and effective interventions were given.
Outcomes: He was resuscitated by cardiopulmonary resuscitation and systematic therapy.
Lessons: This case may provide experience in the management of sudden cardiac arrest during endovascular embolization of a carotid artery aneurysm.
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