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[Transcranial Doppler sonography in radical and function neck dissection]

S Betlejewski1, D Burduk, J Rudy

  • 1Katedry i Kliniki Otolaryngologii AM w Bydgoszczy.

Otolaryngologia Polska = the Polish Otolaryngology
|January 1, 1996
PubMed
Summary
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Radical or functional neck dissection can impact cerebral blood flow, increasing resistance in cerebral arteries. Transcranial Doppler (TCD) monitoring revealed reduced blood flow velocities and higher pulsatility index post-surgery.

Area of Science:

  • Neurology
  • Vascular Surgery
  • Medical Imaging

Background:

  • Neck dissections are common surgical procedures.
  • Cerebral hemodynamics can be affected by surgical interventions.
  • Transcranial Doppler (TCD) is a non-invasive tool for assessing cerebral blood flow.

Purpose of the Study:

  • To investigate the effects of radical or functional neck dissection on cerebral hemodynamics.
  • To evaluate changes in cerebral blood flow velocities and pulsatility index (PI) after neck dissection surgery.

Main Methods:

  • Pre- and postoperative TCD sonographic examinations were conducted on patients undergoing neck dissection.
  • Cerebral blood flow velocities and PI were measured at specific intervals (4, 24, 48 hours) post-operation.
  • Control groups included patients who underwent general anesthesia without neck dissection and healthy individuals for comparison.

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Main Results:

  • Patients undergoing radical or functional neck dissection showed reduced cerebral blood flow velocities post-surgery.
  • An increase in pulsatility index (PI) was observed in these patients, indicating heightened arterial resistance.
  • These hemodynamic changes were evident within the first 48 hours following the procedure.

Conclusions:

  • Radical and functional neck dissections can lead to acute alterations in cerebral hemodynamics.
  • The observed changes suggest increased resistance in the cerebral arterial vasculature post-neck dissection.
  • TCD sonography is effective in detecting these hemodynamic changes following neck dissection surgery.