Introduction: Vasovagal syncope is considered as the most common factor in etiology of neurocardiogenic syncope. Numerous conditions could be responsible for this feature. The management of syncope is often succesful with the presence of a proved triggering factor.
Case report: A sand bag compression was applied for bleeding control on the sheath applied on the femoral artery in case of angiographic stent intervention with the history of acute myocardial infarction. During the process, we encountered a sudden onset of hypotension and bradycardia, and consequent transient unconsciousness and asystole though no previous vital signs exist. After administering atropine of 1 mg intravenous bolus for treating bradycardia and stopping sand bag compression, a fast recovery was observed. We supposed that the sand bag compression at the point of intervention raised pain. We concluded that a painful stimulus caused by sand bag compression might be considered as triggering factor for vasovagal syncope in such a patient not carrying any preexisting arrhytmia and abnormal vital sign.