Shafique Ahmed, Shehzad Ahmad, Anwar Ul Hassan, Mohammad Kashif.
Conduction Abnormalities after ST-Segment Elevation Acute Myocardial Infarction.
Pak J Med Health Sci Jan ;6(4):1035-7.

Objective: To determine the incidence and types of conduction disturbances after acute myocardial infarction and mortality among this group of patients. Study design: Observational study Place of study: Deptt. of Cardiology, B.V. Hospital Bahawalpur from 1st April 2010 to 31st March 2011. Methodology: The study population comprised of 1397 patients. Data regarding age, gender, type of myocardial infarction and the type of conduction disturbance was recorded on a predesigned proforma. The type of treatment modality used to overcome such conduction disturbances was also documented. The cardiac rhythm of all these patients was reassessed before discharge. Results: In our study, 6.5% of the patients presenting with acute myocardial infarction suffered from rhythm abnormalities. Mobitz type I second degree AV block was found in 2.4% of the patients, sinus bradycardia being the second most common form of conduction abnormality. Conduction disturbances were more common in association with inferior wall MI. Most of the bradycardias associated with inferior wall MI responded to Inj. Atropine and fluid therapy. Conduction disturbances required transvenous pacing in 25 patients. Out of these 25, 3 patients having complete heart block after anterior wall MI required permanent pace maker. During hospital stay, 7 patients died. Conclusion: Most the conduction abnormalities occurring after acute myocardial infarction are only transient and if managed timely and correctly, can reduce the mortality among this group of patients.

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