# Computerized tomography angiography in diagnosing an obtuse marginal branch perforation after pericardiocentesis: a case report

## TL;DR

A rare case of coronary artery perforation after a heart procedure was diagnosed using a CT scan and successfully treated with a minimally invasive technique.

## Contribution

Demonstrates the diagnostic utility of CT angiography in identifying and managing rare coronary perforations after pericardiocentesis.

## Key findings

- CT angiography accurately diagnosed a distal obtuse marginal artery perforation after pericardiocentesis.
- Coronary guidewire particle embolization effectively managed the hemorrhage, improving the patient's hemodynamic status.
- CTA can guide decisions between embolization and open-heart surgery for coronary perforation.

## Abstract

Pericardiocentesis is both therapeutic and diagnostic invasive procedure, guided by echocardiography and/or angiography. It can be done using subcostal or apical approach. One of the major complications of pericardiocentesis is coronary artery laceration with an incidence of less than 1%. Diagnosis of such lacerations is often made by invasive coronary angiography or urgent thoracotomy. Computed tomography angiography is used to determine the extent of bleeding and hemopericardium, but its potential for detailed evaluation of bleeding site is somewhat underestimated.

We present a rare case of distal obtuse marginal (OM) artery perforation resulting from apical pericardiocentesis that was diagnosed with CT angiography (CTA) further treated with coronary guidewire particle embolization. A 49-year-old male patient who had undergone ascending aorta and aortic arch reconstruction after an aortic dissection Type A was evaluated with echocardiography before being discharged from our hospital. A loculated pericardial effusion was identified, necessitating pericardiocentesis. The clinical course was further complicated by hemopericardium due to coronary laceration. The hemorrhage was managed with coronary guidewire segment embolization which led to immediate improvement in hemodynamic status. The patient was discharged seven days after intervention.

Coronary artery perforation is a rare, albeit life-threatening complication of pericardiocentesis that requires urgent surgical or percutaneous intervention. CTA can provide important diagnostic information on perforation location and help in deciding whether embolization or open-heart surgery is needed to address ongoing bleeding.