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The Annals of Thoracic Surgery, Vol 36, 706-714, Copyright © 1983 by The Society of Thoracic Surgeons

ARTICLES

Use of computed tomography to assess mediastinal complications after median sternotomy

HR Kay, LR Goodman, SK Teplick and ED Mundth

Thirty computed tomographic (CT) scans from 27 patients who had undergone median sternotomy were reviewed. A control group of 15 asymptomatic patients was studied either early (within 21 days) or late (46 days to 22 years) after sternotomy. Twelve patients with symptoms ranging from sternal click to obvious mediastinitis also were studied within 30 days of sternotomy. The CT findings were correlated with the patient's clinical course. Imperfect sternal closure (sternal step-offs and gaps) was found in 10 of the 15 asymptomatic patients. Focal retrosternal fluid collections, air, and hematomas were seen in more than 75% of the asymptomatic patients. Retrosternal abscess, presternal abscess, and sternal disruption were noted in 3 symptomatic patients. Computed tomography correctly diagnosed the extent of mediastinal abscess in all patients. In the 3 patients in whom there was a discrepancy between the CT scan and the clinical findings, the scan ultimately was shown to be correct. These results indicate that computed tomography is a valuable tool in diagnosing wound problems after sternotomy because it accurately depicts the extent and depth of the wound infection.

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