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Hypophosphatemia after cardiothoracic surgery.

J Goldstein, J L Vincent, J L Leclerc

    Intensive Care Medicine
    |January 1, 1985
    PubMed
    Summary

    Hypophosphatemia, low serum phosphate, is common after cardiothoracic surgery. Phosphate supplements may be needed, particularly after thoracic procedures with minimal blood transfusions.

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    Area of Science:

    • Cardiology
    • Thoracic Surgery
    • Critical Care Medicine

    Background:

    • Hypophosphatemia is a potential complication following major surgical procedures.
    • Understanding the incidence and risk factors for hypophosphatemia after cardiothoracic surgery is crucial for patient management.

    Purpose of the Study:

    • To prospectively investigate the incidence and timing of hypophosphatemia in the early postoperative period (first 48 hours) after cardiothoracic surgery.
    • To identify factors associated with hypophosphatemia in this patient population.

    Main Methods:

    • Prospective study involving 74 patients undergoing cardiothoracic surgery.
    • Serum phosphate levels were monitored within the first 48 hours postoperatively.
    • Definition of hypophosphatemia: serum phosphate < 2.50 mg/dl.

    Main Results:

    • Overall incidence of hypophosphatemia was 53% (39 of 74 patients).
    • Hypophosphatemia occurred in 56% of thoracic surgery patients and 50% of cardiac surgery patients.
    • Hypophosphatemia manifested earlier after thoracic surgery compared to cardiac surgery.
    • More severe bleeding correlated with milder hypophosphatemia in thoracic surgery patients.
    • Citrate phosphate dextrose (CPD) in stored blood was identified as a phosphate source.

    Conclusions:

    • Hypophosphatemia is a frequent occurrence after cardiothoracic surgery.
    • Phosphate supplementation may be beneficial, especially in thoracic surgery patients receiving less than 1000 ml of blood transfusion, to prevent severe phosphate depletion.

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