Background & objectives: Cardiac arrhythmia complicating Acute MI is associated with adverse prognosis. We analyzed profile of patients admitted in ICCU with Acute MI in tertiary care hospital, Gujarat to evaluate incidence, relationship between location of infarction and associated arrhythmia and their impact on mortality.

Materials & Methods: Patients are assessed with Clinical history, Physical examination, necessary lab investigation & ECG. Acute MI and Various types of arrhythmias are diagnosed by ECG and on cardiac monitor. IF any rhythm disturbance is detected, it is recorded immediately.

Results: Cardiac arrhythmia is common in 6^th Decade & in male (M: F 4.55:1). VPCs is most common arrhythmia observed. Conduction block is more common with inferior than with anterior infarction. VPCs in anterior infarction While 2^nd degree type 2 A–V block is most common arrhythmia in inferior wall infarction. Arrhythmia with Combined Anterior and Inferior wall infarction carries bad prognosis.

Conclusions: Cardiac arrhythmia with Acute MI is common in old age & in male. VPC is most common arrhythmia observed. Conduction block are common with inferior infarction. Arrhythmia with combined anterior and inferior infarction carries bad prognosis.