Suspected clopidogrel resistance in a patient with acute stent thrombosis.
BACKGROUND
A 67-year-old man with supraventricular tachycardia associated with angina underwent coronary angiographic assessment. This investigation revealed mild coronary artery disease in his left main coronary artery and significant stenosis of the ramus medianus (left intermediate artery). A drug-eluting stent was deployed and treatment with clopidogrel and eptifibatide started. The patient subsequently developed chest pain accompanied by hypotension, hypoxemia and electrocardiographic changes that indicated acute myocardial infarction. Emergency angiography revealed occlusion of the ramus medianus despite clopidogrel therapy.


METHODS
Coronary angiography, hypercoagulable work up and platelet function tests.


METHODS
Acute stent thrombosis and suspected clopidogrel resistance, culminating in ST-segment elevation myocardial infarction after percutaneous coronary intervention.


RESULTS
Warfarin, aspirin and clopidogrel drug therapy.
Marshfield Clinic, Marshfield, WI 54449, USA.
Hemender S
HS
Vats
William G
WG
Hocking
Shereif H
SH
Rezkalla
D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation* / Q000379:methods; D000077144:Clopidogrel; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000628:therapy; D003328:Coronary Thrombosis / Q000000981:diagnostic imaging* / Q000628:therapy*; D016503:Drug Delivery Systems; D004351:Drug Resistance; D005343:Fibrinolytic Agents; D005500:Follow-Up Studies; D006801:Humans; D008297:Male; D011475:Prosthesis Failure; D012008:Recurrence; D018570:Risk Assessment; D015607:Stents / Q000009:adverse effects*; D013988:Ticlopidine / Q000008:administration & dosage / Q000031:analogs & derivatives*; D016896:Treatment Outcome
D005343:Fibrinolytic Agents; D000077144:Clopidogrel; D013988:Ticlopidine