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Sciatic nerve lesions during cardiac surgery

P G McManis1

  • 1Department of Neurology, Mayo Clinic and Foundation, Rochester, MN 55905.

Neurology
|April 1, 1994
PubMed
Summary
This summary is machine-generated.

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Cardiac surgery patients rarely develop sciatic nerve lesions. Prolonged femoral artery catheterization or occlusion, combined with hypoxia, increases the risk of sciatic neuropathy and potential muscle ischemia.

Area of Science:

  • Neurology
  • Cardiovascular Surgery
  • Vascular Surgery

Background:

  • Sciatic nerve lesions are uncommon complications in cardiac surgery patients.
  • Previous literature has not extensively detailed the etiologies of sciatic neuropathy in this population.

Purpose of the Study:

  • To investigate the potential causes of sciatic neuropathy in patients undergoing cardiac surgery.
  • To identify risk factors associated with the development of sciatic nerve damage post-cardiac surgery.

Main Methods:

  • Retrospective review of cardiac surgery patients over 15 years at a single institution.
  • Analysis of medical records for six patients diagnosed with sciatic neuropathy.
  • Clinical examination and electromyography (EMG) in a subset of patients.

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Main Results:

  • Four of six patients had prolonged intra-aortic balloon pump (IABP) therapy with ipsilateral femoral artery catheterization.
  • Two patients had ipsilateral femoral artery occlusion.
  • Four patients had severe peripheral vascular disease; one experienced prolonged perioperative hypoxia.
  • EMG revealed femoral nerve or quadriceps muscle damage in two patients, suggesting potential muscle ischemia.

Conclusions:

  • Patients undergoing cardiac surgery are at risk for sciatic neuropathy, particularly with compromised femoral artery blood flow and concurrent tissue hypoxia.
  • Asymptomatic ischemia of the femoral nerve and quadriceps muscles may occur in this patient cohort.
  • Risk factors include IABP use, femoral artery occlusion, peripheral vascular disease, and perioperative hypoxia.