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Acute hypotension after total knee arthroplasty and its nursing strategy.

OBJECTIVE: To determine the factors affecting postoperative acute hypotension after total knee arthroplasty (TKA) and provide a basis for guiding the clinical prevention.

METHODS: Between May 2001 and May 2013, a total of 495 patients undergoing routine TKA were analyzed retrospectively. Independent risk factors related to postoperative acute hypotension after TKA were determined by univariate and multivariate analysis.

RESULTS: Of the 495 patients undergoing TKA, 61 (12.32%) developed postoperative acute hypotension after surgery. Univariate analysis showed that preoperative Neu, time of surgery, time of anesthesia, pressure of tourniquet, time of using tourniquet, preoperative hypertension, age and type of surgery were significant influencing factors, whereas by multivariate analysis, only age, pressure of tourniquet and type of surgery were significant influencing factors.

CONCLUSION: Factors those were associated with a significantly increased postoperative acute hypotension after TKA included age, pressure of tourniquet and type of surgery. Achieving a good preoperative and postoperative evaluation and monitoring vital signs and disease change contribute to the detection, intervention and salvage for the acute hypotension.

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