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Background <p>Ventricular septal defect is a rare yet life-threatening mechanical complication of myocardial infarction. In exceptionally uncommon cases, the interventricular septum undergoes localized dissection with formation of an intraseptal pseudoaneurysm without complete septal rupture. While most pseudoaneurysms develop in the acute post-infarction phase, delayed presentation following surgical revascularization is exceedingly rare.</p> Case summary <p>We report the case of a 61-year-old man who underwent surgical coronary artery bypass grafting after myocardial infarction. Early postoperative transesophageal echocardiography identified a 3 × 3&#xa0;cm mid-septal pseudoaneurysm without communication between the two ventricular chambers. Given the patient’s hemodynamic stability, a conservative strategy with combined anticoagulation and antiplatelet therapy was adopted. Serial transesophageal echocardiographic follow-up demonstrated progressive spontaneous thrombosis and complete closure of the pseudoaneurysm. At six months, the patient remained asymptomatic with preserved left ventricular function.</p> Discussion <p>Post-CABG interventricular septal pseudoaneurysm is an exceptionally rare finding. In carefully selected hemodynamically stable patients, conservative management may represent a reasonable alternative to surgery, as spontaneous thrombosis and resolution can occur. Close echocardiographic surveillance is essential to guide therapeutic decisions and promptly detect complications.</p> Conclusion <p>This case highlights that early diagnosis and individualized management of post-CABG interventricular septal pseudoaneurysm may lead to favorable outcomes without surgical intervention in selected stable patients.</p>

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Impending interventricular septal rupture after CABG: conservative management of a post-infarction septal pseudoaneurysm

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年7月7日

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  • Alessandro Ricasoli,
  • Laura Asta,
  • Salvatore Scandura,
  • Umberto Benedetto,
  • Calogera Pisano,
  • Salvatore Lentini

摘要

Background

Ventricular septal defect is a rare yet life-threatening mechanical complication of myocardial infarction. In exceptionally uncommon cases, the interventricular septum undergoes localized dissection with formation of an intraseptal pseudoaneurysm without complete septal rupture. While most pseudoaneurysms develop in the acute post-infarction phase, delayed presentation following surgical revascularization is exceedingly rare.

Case summary

We report the case of a 61-year-old man who underwent surgical coronary artery bypass grafting after myocardial infarction. Early postoperative transesophageal echocardiography identified a 3 × 3 cm mid-septal pseudoaneurysm without communication between the two ventricular chambers. Given the patient’s hemodynamic stability, a conservative strategy with combined anticoagulation and antiplatelet therapy was adopted. Serial transesophageal echocardiographic follow-up demonstrated progressive spontaneous thrombosis and complete closure of the pseudoaneurysm. At six months, the patient remained asymptomatic with preserved left ventricular function.

Discussion

Post-CABG interventricular septal pseudoaneurysm is an exceptionally rare finding. In carefully selected hemodynamically stable patients, conservative management may represent a reasonable alternative to surgery, as spontaneous thrombosis and resolution can occur. Close echocardiographic surveillance is essential to guide therapeutic decisions and promptly detect complications.

Conclusion

This case highlights that early diagnosis and individualized management of post-CABG interventricular septal pseudoaneurysm may lead to favorable outcomes without surgical intervention in selected stable patients.