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Skeletal muscle function after major abdominal surgery.

D J Newham1, R A Harrison, C G Clark

  • 1Department of Surgery, University College London, Rayne Institute, UK.

Human Nutrition. Clinical Nutrition
|September 1, 1987
PubMed
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Major abdominal surgery did not significantly alter adductor pollicis muscle contractility. Malnourished patients showed some quadriceps muscle changes, but overall muscle function remained largely unaffected by surgery in this study.

Area of Science:

  • Physiology
  • Surgical Recovery
  • Nutritional Science

Background:

  • Muscle contractile properties are crucial for recovery after major surgery.
  • Nutritional status may influence post-operative muscle function.
  • Adductor pollicis and quadriceps muscles are key for mobility and function.

Purpose of the Study:

  • To investigate the impact of major abdominal surgery on the contractile properties of adductor pollicis and quadriceps muscles.
  • To compare the effects in well-nourished versus malnourished patients.
  • To assess if pre-operative muscle function predicts post-operative complications.

Main Methods:

  • Assessed muscle contractile properties (force:frequency relationship, relaxation rates) pre-operatively and at 4 and 10 days post-surgery.

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  • Stratified 15 patients into well-nourished (n=8) and malnourished (n=7) groups based on BMI, weight loss, and albumin.
  • Compared contractile data between groups and pre- vs. post-operative time points.

    • Main Results:

    • No significant changes in adductor pollicis contractility were observed post-surgery.
    • Malnourished patients exhibited potentiation of quadriceps force generation at 1 Hz on day 4.
    • A trend suggested malnourished patients had higher forces at low frequencies and slower relaxation, though not statistically significant.

    Conclusions:

    • Major abdominal surgery minimally impacts adductor pollicis muscle contractility.
    • Nutritional status may subtly influence quadriceps response to surgery, particularly at low stimulation frequencies.
    • Pre-operative muscle contractile properties did not predict post-operative complications in this cohort.