FREQUENCY OF LEFT VENTRICULAR THROMBUS AFTER ANTERIOR WALL ST-SEGMENT ELEVATION ACUTE MYOCARDIAL INFARCTION
Left ventricular thrombus (LVT) formation is a well known complication seen in patients presenting with acute anterior wall ST-segment elevation myocardial infarction (STEMI). In previous studies the incidence of this complication, after acute myocardial infarction (AMI) has been reported to be 4% to 60% in large anterior wall STEMI, depending significantly upon the method as well as time of reperfusion therapy after STEMI.
The objective of this descriptive case series study was to evaluate the frequency of left ventricular thrombus formation in patients after acute anterior wall ST-Segment elevation myocardial infarction.
In this study, 100 patients with anterior wall STEMI presenting to cardiac emergency or coronary care unit (CCU) of Cardiac complex, Gulab Devi Hospital, were selected on non-probability, purposive sampling meeting inclusion criteria, after taking written informed consent. All the patients were treated initially for management of acute STEMI, including use of thrombolytics where indicated. 2-D Transthoracic echocardiography (TTE) was performed during the same admission to assess presence of LV thrombus (LVT).
The mean age of the patients was 54.3 ± 11.4 years. There were 84(84%) male patients and 16 (16%) female patients. LVT was present in 28 (28%) patients on TTE. Among those, there were 23 (82.1%) male and 5 (17.9%) female patients. However, out of 84 male patients 27.4% develop LVT and among 16 female patients this ratio was 31.3%. The LV thrombus was independent of age and gender. LV thrombus was significantly less in thrombolytic group as compared to those who were not given this therapy, i.e. p value <0.05.
Patients with anterior wall acute STEMI not infrequently develop the complication of development of LV thrombus. In this study the frequency of LV thrombus formation after anterior wall acute STEMI was 28%.
Anterior wall STEMI, LV Thrombus, Reperfusion Therapy, 2-D Transthoracic Echocardiography, Contrast Enhanced Echocardiography.
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