Task: Answer Verification
Input (English): Question: Is benefits of magnesium in acute myocardial infarction : timing crucial?
Answer: The serum magnesium levels in patients with AMI were lower compared with controls. The administration of intravenous magnesium to patients in the immediate postinfarction period is cardioprotective and decreases the incidence of arrhythmia, pump dysfunction, and death. Thus intravenous magnesium is a safe, effective, and inexpensive modality of treatment in AMI.
Output (English): yes