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Ann Thorac Surg 1999;68:858-863
© 1999 The Society of Thoracic Surgeons
a Department of Thoracic Surgery, Karolinska Hospital, Stockholm, Sweden
b Department of Thoracic Radiology, Karolinska Hospital, Stockholm, Sweden
Address reprint requests to Dr Bitkover, Department of Thoracic Surgery, Karolinska Hospital, S-171 76 Stockholm, Sweden
e-mail: catarina.bitkover{at}thxkir.ks.se
Background. Computed tomography is used in our hospital to diagnose complications after median sternotomy, but its efficiency is unknown. Nor is the computed tomographic appearance of normal healing of a median sternotomy known. Computed tomography was evaluated for its ability to diagnose mediastinitis and sternal dehiscence, and a reference material of normally healing median sternotomies was created.
Methods. In a prospective study, 20 patients with a normally healing median sternotomy were examined 1 week, 1 month, 3 months, and 6 months after operation. In a retrospective study, 87 scans from 65 patients that were made because a postoperative complication was suspected were reviewed.
Results. In the prospective study, all patients had clinically uneventful healing. None of the computed tomographic scans showed radiologic signs of healing at 3 months. At 6 months, half of the patients had healed completely. In the retrospective study, 49 scans were performed on suspicion of infection; 7 of them indicated mediastinitis, 2 were false-positive, while mediastinitis was present in a total of 16 of the scans. Thirty-eight scans were made because of sternal pain or suspected dehiscence; after 21 of the scans, recovery was uneventful, and in 11, the definite diagnosis was dehiscence or pseudarthrosis.
Conclusions. Clinical healing of the sternotomy does not correlate with the computed tomographic image. Computed tomography is not a sensitive tool for diagnosing mediastinitis, and in patients with sternal pain, it adds little information.
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Ann. Thorac. Surg. 1999 68: 863.
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