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Related Experiment Videos

Biochemical disturbances associated with total hip replacement.

J P Alexander, D W Barron

    The Journal of Bone and Joint Surgery. British Volume
    |February 1, 1979
    PubMed
    Summary

    Hip arthroplasty using acrylic bone cement can cause pulmonary microembolism. This study found fat embolisation, indicated by low oxygen levels and specific biochemical changes, regardless of venting method.

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    Area of Science:

    • Orthopedics
    • Cardiopulmonary Physiology
    • Biochemistry

    Background:

    • Total hip arthroplasty (THA) is a common orthopedic procedure.
    • Potential complications include cardiovascular and respiratory disturbances.
    • The role of bone cement and prosthesis insertion in these complications requires further investigation.

    Purpose of the Study:

    • To investigate the effects of acrylic bone cement and prosthesis insertion during hip arthroplasty on cardiovascular and respiratory systems.
    • To identify the mechanisms underlying observed physiological disturbances.
    • To evaluate the impact of different venting methods on these effects.

    Main Methods:

    • Prospective study involving 227 patients undergoing hip arthroplasty.
    • Monitoring of cardiovascular and respiratory parameters.
    • Biochemical analysis including serum lipase and triglycerides.
    • Assessment of arterial oxygen tension during and after surgery.

    Main Results:

    • Acrylic bone cement and prosthesis insertion led to disturbances consistent with pulmonary microembolism.
    • A decrease in arterial oxygen tension and postoperative hypoxemia were observed.
    • Elevated serum lipase and decreased triglycerides supported the occurrence of marrow fat embolisation.
    • Venting methods (catheter or proximal hole) did not alter biochemical disturbances.

    Conclusions:

    • The insertion of acrylic bone cement and prosthesis during hip arthroplasty can induce pulmonary microembolism.
    • Marrow fat embolisation is a likely mechanism, evidenced by specific biochemical markers and hypoxemia.
    • Current venting techniques do not mitigate these biochemical disturbances.

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