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PULMONARY EMBOLISM AFTER INSTRUMENTATION OF THE SPINE: A PROSPECTIVE TRANSOESOPHAGEAL ULTRASOUND STUDY



Abstract

Purpose: Fat or marrow embolism during or after bone and joint surgery is a serious complication. We wanted to determine the incidence and circumstances of peroperative embolism in patients undergoing lumbar spine surgery with and without instrumentation.

Material and methods: Sixty adult patients with degenerative lumbar spines underwent peroperative and early postoperative transoesophageal ultrasonography. The lumbar procedure involved instrumentation with insertion of pedicular screws in 40 patients.

Results: Moderate to severe signs of embolism (Pitto classification grade 2 or 3) were observed in 80% of the patients who underwent instrumentation procedures but in none of those who had not been instrumented (p < 0.001).

Discussion: Among the different procedures performed on the posterior lumbar spine, insertion of pedicular screws appears to be the leading cause of pulmonary embolism. The approach, laminectomy, discectomy, and bone abrasion do not appear to produce detectable embolism.

Conclusion: We consider that the observed embolic manifestations, also observed in intramedullar procedures, are potentially fatal after spinal surgery.

The abstracts were prepared by Docteur Jean Barthas. Correspondence should be addressed to him at Secrétariat de la Société S.O.F.C.O.T., 56 rue Boissonade, 75014 Paris.