The Journal of Bone and Joint Surgery, Vol 75, Issue 4 581-587, Copyright © 1993 by Journal of Bone and Joint Surgery, Inc

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Pulmonary function during and after total hip replacement. Findings in patients who have insertion of a femoral component with and without cement

MD Ries, F Lynch, LA Rauscher, J Richman, C Mick and M Gomez
Department of Orthopaedic Surgery, Mary Imogene Bassett Hospital, Cooperstown, New York 13326.

Eleven patients who had a femoral component inserted with cement and twenty-three who had a femoral component inserted without cement were studied prospectively for changes in the pulmonary shunt associated with total hip replacement. The levels of oxygen in the arterial blood and the platelet counts were measured preoperatively and each morning for three days after the arthroplasty. Levels of oxygen in the arterial blood were determined intraoperatively, once before and once after the femoral component was inserted. Intraoperative shunt values increased 28 per cent when a femoral component was inserted with cement (p < 0.05), but they did not change when cement was not used. The average postoperative shunt values were higher than the average preoperative shunt values for both groups of patients, but only the values on the second postoperative day after a procedure with cement were significantly higher (p < 0.05). The ability of the patient to tolerate an increase in pulmonary shunt should be assessed when the femoral component is to be cemented during total hip replacement.
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