Contrast-induced nephropathy after primary angioplasty for acute myocardial infarction.

Introduction: The prevention of contrast-induced nephropathy (CIN) is difficult in emergency situations, making it essential to study CIN in patients submitted to urgent angioplasty.

Objective: To determine the incidence and associated factors to CIN in patients with myocardial infarction (MI) submitted to primary angioplasty in the first 12 hours after onset of symptoms.

Methods: We studied 201 consecutive cases of MI with ST-segment elevation with less than 12 hours of evolution.