Deferring Percutaneous Coronary Intervention in Subacute STEMI With Rare Mechanical Complications.

Background: Pseudoaneurysms and walls defects are rare mechanical complications of myocardial infarction, more common in subacute or late presentations. Case Summary: A patient with subacute anterior ST elevation myocardial infarction presented to the emergency department with a large pseudoaneurysm of the apical septum, identified as an ischemic mechanical complication. Despite the confirmed complete occlusion of the left anterior descending artery, revascularization was deferred owing to the patient's high risk. Discussion: The optimal timing for cardiac surgery in post-ischemic wall mechanical complications remains unclear. Evidence suggests immediate repair may prevent deterioration, while some surgeons recommend delaying surgery for 3 to 6 weeks to allow for fibrotic scar formation, aiding in safer suturing. Take Home Message: This case highlights the importance of tailored patient management; the echocardiogram played a crucial role in identifying the optimal treatment strategy for this patient, balancing the risks of immediate intervention against the benefits of delayed surgery.