ArticleJACC. Case reports2025
A Rare Case of Left Internal Mammary Artery Transection During Pericardiocentesis.
Article in JACC. Case reports, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundPericardiocentesis is a common procedure for managing pericardial effusions, but it carries risks for vascular injury, particularly in patients with coagulopathies. CASE SUMMARY: A 72-year-old man with factor V Leiden mutation and sick sinus syndrome (status post pacemaker placement), presented with dizziness, dyspnea, and chest pain. Echocardiography revealed a large pericardial effusion with tamponade physiology, necessitating pericardiocentesis. After drain removal, the patient developed hypotension and bradycardia. Imaging identified active bleeding from a distal branch of the left internal mammary artery (LIMA). Hemostasis was achieved via embolization and microcoil placement. The patient recovered with no reaccumulation of effusion or hematoma. DISCUSSION: This rare case of LIMA injury following pericardiocentesis highlights an underrecognized complication, particularly in patients with coagulation disorders. It underscores the need for vigilant postprocedural monitoring and the role of advanced imaging in diagnosing vascular injuries. TAKE-HOME MESSAGE: LIMA injury is a rare but serious complication of pericardiocentesis, requiring prompt-recognition and intervention.
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