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Cardiac Magnetic Resonance for the Evaluation of Suspected Cardiac Thrombus: Conventional and Emerging Techniques
Published on: June 11, 2019
Left atrium ball thrombus in a patient with hemorrhagic cerebral infarction
Shota Yasuda1, Shigehiko Tokunaga, Yusuke Matsuki
1Department of Cardiovascular Surgery, Kanagawa Cardiovascular and Respiratory Center, Yokohama, Japan.
Insights
A large left atrial ball thrombus caused stroke symptoms in a 72-year-old man. Emergency surgery successfully removed the mass, preventing further brain hemorrhage with careful anticoagulation management.
Area of Science:
- Cardiology
- Neurology
- Cardiovascular Surgery
Background:
- A 72-year-old male presented with left hemiparesis and multiple hemorrhagic cerebral infarctions on CT scan.
- Cerebral infarctions can be caused by embolic events originating from the heart.
Observation:
- Transesophageal echocardiography revealed a large, mobile left atrial mass nearly obstructing the mitral valve during diastole.
- The mass was identified as a ball thrombus upon pathological examination.
Findings:
- Emergency surgical removal of the left atrial mass was successfully performed.
- Anticoagulation was carefully managed using a reduced heparin dose and nafamostat mesilate infusion during extracorporeal circulation to mitigate hemorrhage risk.
- Postoperative CT scans showed no evidence of increased cerebral hemorrhage.
Implications:
- This case highlights the importance of considering cardiac embolic sources in patients with stroke, even with hemorrhagic infarctions.
- Effective surgical management combined with cautious anticoagulation strategies can prevent further embolic events and manage hemorrhage risk.
- Prompt diagnosis and intervention for large left atrial masses are crucial for improving patient outcomes and preventing severe neurological complications.
Abstract:
The patient was a 72-year-old man with left hemiparesis. Multiple hemorrhagic cerebral infarctions were recognized on a computed tomographic (CT) scan. A transesophageal echocardiogram showed a huge left atrial mass, which was floating and nearly obstructed the mitral orifice in the diastolic phase. Emergency left atrial mass removal was performed. To reduce the risk of critical brain hemorrhage, the dose of heparin was reduced (100 U/kg) and 1 mg/kg/h of nafamostat mesilate was administered into the venous circuit during extracorporeal circulation. A postoperative brain CT scan showed no evidence of deterioration of cerebral hemorrhage. Pathologic examination showed a ball thrombus.
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