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Ann Thorac Surg 2000;70:2045-2049
© 2000 The Society of Thoracic Surgeons

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Original article: cardiovascular

Pain pattern and left internal mammary artery grafting

^a Clinic for Cardiovascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland
^b Surgical Intensive Care Unit, Centre Hospitalier Universitaire Vaudois (CHUV), Lausanne, Switzerland

Accepted for publication April 25, 2000.

Address reprint requests to Dr Mueller, Clinic for Cardiovascular Surgery, Centre Hospitalier Universitaire Vaudois (CHUV), CH-1011 Lausanne, Switzerland
e-mail: xavier.mueller{at}chuv.hospvd.ch

Background. This study was designed to determine whether the pain pattern in patients with an internal mammary artery (IMA) harvest differs from that in other cardiac operations and whether these patients present specific characteristics with clinical implications.

Methods. One hundred patients with left IMA grafting (IMA group) were compared prospectively with 100 patients who had a heart operation without IMA harvest (non-IMA group). Pain assessment was performed on postoperative days (POD) 1, 2, 3, and 7, and included pain intensity (10-point scale) and pain localization.

Results. In the IMA group, pain intensity was higher on POD 2 (4.2 ± 2.4 versus 3.2 ± 2.3, p < 0.01), and there were more patients without pain on POD 7 (32 versus 19, p = 0.03). In the IMA group, more patients had left basal thoracic pain throughout the entire study period and had sternal pain on POD 7, whereas more patients in the non-IMA group complained about back pain during the early postoperative period.

Conclusions. The impact of IMA harvest on pain intensity is moderate, but the pain localization pattern of each group exhibits specific features that could help to better target pain management.

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