Left atrial thrombus formation immediately after cardioversion of atrial fibrillation despite adequate anticoagulant therapy.
We observed a patient who exhibited de novo left atrial thrombus formation after cardioversion, despite administration of adequate anticoagulant therapy. Preexisting atrial thrombus was excluded by transesophageal echocardiography. Preexisting severe left atrial mechanical dysfunction may be considered as a risk factor for de novo thrombus formation after cardioversion, as well as the poor outcome of cardioversion.
Tanabe
K
K
Fourth Department of Internal Medicine, Shimane Medical University, Izumo, Japan.
Yoshitomi
H
H
Asanuma
T
T
Shimada
T
T
Morioka
S
S
D000328:Adult; D000925:Anticoagulants / Q000627:therapeutic use*; D001281:Atrial Fibrillation / Q000150:complications / Q000628:therapy*; D016275:Atrial Function; D017548:Echocardiography, Transesophageal; D004554:Electric Countershock / Q000009:adverse effects; D005500:Follow-Up Studies; D006325:Heart Atria / Q000000981:diagnostic imaging; D006331:Heart Diseases / Q000000981:diagnostic imaging / Q000209:etiology*; D006493:Heparin / Q000627:therapeutic use; D006801:Humans; D008297:Male; D013927:Thrombosis / Q000000981:diagnostic imaging / Q000209:etiology*; D016896:Treatment Outcome; D014859:Warfarin / Q000627:therapeutic use
D000925:Anticoagulants; D014859:Warfarin; D006493:Heparin