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Functional MRI Changes in Patients after Thyroidectomy under General Anesthesia.

Xilun Yang1, Bing Yu2, Ling Ma1

  • 1Department of Anesthesiology, Shengjing Hospital of China Medical University, China.

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Summary
This summary is machine-generated.

Postoperative cognitive changes in seniors after anesthesia may link to reduced brain functional connectivity density (FCD) in the supplementary motor area (SMA). This study used resting-state fMRI to assess FCD changes after thyroidectomy.

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Area of Science:

  • Neuroscience
  • Geriatric Medicine
  • Anesthesiology

Background:

  • Postoperative cognitive changes are a significant concern in elderly patients undergoing surgery.
  • Resting-state functional magnetic resonance imaging (rs-fMRI) is a valuable tool for assessing brain functional connectivity (FC).
  • Changes in FC are associated with cognitive function, particularly in older adults.

Purpose of the Study:

  • To investigate perioperative changes in brain functional connectivity density (FCD) in elderly patients undergoing thyroidectomy under general anesthesia.
  • To explore the relationship between FCD alterations and neurocognitive changes after surgery.

Main Methods:

  • Recruited 20 patients over 55 undergoing elective thyroidectomy.
  • Utilized rs-fMRI to measure FCD on the day before surgery (Day 0) and 7 days after surgery (Day 7).
  • Administered neuropsychological tests including MMSE, DSST, Trail Making Test A, Verbal Fluency, and WRMT.

Main Results:

  • A significant reduction in postoperative FCD was observed in the supplementary motor area (SMA).
  • Postoperative FCD changes in the SMA negatively correlated with changes in errors on the Warrington Recognition Memory Test (WRMT).
  • The findings suggest a link between SMA FCD alterations and perioperative neurocognitive changes.

Conclusions:

  • Perioperative changes in FCD within the SMA may be associated with cognitive changes observed in elderly patients after general anesthesia for thyroidectomy.
  • rs-fMRI is a promising method for detecting subtle brain connectivity alterations post-surgery.
  • Further research is warranted to understand the mechanisms underlying these associations.