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Accelerated Coronary Reperfusion Through the Use of Rapid Bedside Cardiac Markers

Case Reports

Resurrection Health Care - St. Francis Hospital, Evanston, Illinois

Cynthia Fisch

Resurrection Health Care - St. Francis Hospital, Evanston, Illinois

Carolynn Zonia

Resurrection Health Care - St. Francis Hospital, Evanston, Illinois

Alberto Foschi

Resurrection Health Care - St. Francis Hospital, Evanston, Illinois

Each year, acute myocardial infarctions (AMI) account for more than half a million deaths in the United States. Complicating treatment of AMI is the difficulty in accu rately diagnosing the event, for patients have nondiagnostic electrocardiograms (ECG) more than 50% of the time. In this population, cardiac markers are essential to confirm the diagnosis. The new bedside cardiac markers, which use eight drops of whole blood and require 15 minutes to be read negative, make it possible to shorten time needed to diagnose AMI. One hundred twenty-seven consecutive patients presented to the emergency department complaining of atypical chest pain. All had ECGs that were nondiagnostic for myocardial infarction. Serial cardiac markers were performed: myoglobin, troponin I, rapid myoglobin, and rapid troponin I. One hundred eighteen patients with negative serial cardiac markers had exercise treadmill tests in the emergency department. Nine patients with positive serial cardiac markers received emergent primary angioplasty. Six of the nine patients were treated based on the positive results of the rapid bedside cardiac markers. A 100% correlation existed between the quantitative serum results and the rapid bedside markers. With the avail ability of rapid bedside assays, dependency on the laboratory can be minimized, since quantitative cardiac markers require at least 1 hour of turnaround time. Rapidly and correctly diagnosing AMIs in patients with ECGs nondiagnostic for AMI has always been a dilemma. Rapid bedside assays enable the physician to accurately diagnose myocardial infarction and safely decrease the time in evaluating chest pain, thus maximizing the benefits of early reperfusion.

Angiology, Vol. 50, No. 1, 55-62 (1999)
DOI: 10.1177/000331979905000107


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