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Postoperative hypophosphataemia and muscle function.

P T Andersen1, E Toft, A K Hansen

  • 1Department of Anaesthesia, Odense University Hospital, Denmark.

The British Journal of Surgery
|January 1, 1991
PubMed
Summary
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Elective cholecystectomy impairs triceps brachii muscle function, decreasing neuromuscular efficiency post-operation. This muscle function decline is not linked to serum phosphate levels, despite some patients developing hypophosphatemia.

Area of Science:

  • Physiology
  • Surgical Outcomes

Background:

  • Skeletal muscle function is crucial for recovery after surgery.
  • Elective cholecystectomy is a common surgical procedure.
  • Postoperative muscle function changes and their correlation with serum phosphate levels require further investigation.

Purpose of the Study:

  • To assess changes in skeletal muscle function (triceps brachii) after elective cholecystectomy.
  • To investigate the relationship between postoperative muscle function and serum phosphate concentrations.

Main Methods:

  • Muscle function tests (electromyograms - EMGs) were conducted on ten patients before and after cholecystectomy.
  • Surface electrodes recorded EMG activity during sustained isotonic and isometric contractions.
  • Neuromuscular efficiency and muscle fatiguability were calculated and compared with serum phosphate levels.

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Main Results:

  • A significant decrease (14%) in neuromuscular efficiency was observed three days post-operation (P < 0.01).
  • Muscle fatiguability remained unchanged after surgery.
  • Serum phosphate levels showed a non-significant decrease, with two patients experiencing severe hypophosphatemia.
  • No significant association was found between muscle function deterioration and serum phosphate levels (P > 0.10).

Conclusions:

  • Patients undergoing elective cholecystectomy experience a decline in skeletal muscle function.
  • This postoperative muscle function deterioration is not correlated with changes in serum phosphate concentration.