Abstract
Temporary transcutansous pacing thresholds were measured in 10 patients undergoing primary coronary artery bypass grafting (CABG) operations and 10 patients having reoperative CABG operations 7 months to 14 years after their previous cardiac surgery. All surgeries were performed via median stemotomy. After anesthetic induction using either fentanyl or sufentanil in combination with enflurane, the pacing stimulation thresholds were determined. There was no significant difference ( P < 0.05) between the pacing thresholds of the reoperative group and the primary procedure group (78.2 ± 6.2 v 79.2 ± 4.8 mA, respectively). Transcutaneous pacing was successful in all 20 patients. Therefore, transcutansous pacing thresholds appear unaffected by previous cardiac surgery.
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