Effect of Head Position During Thyroidectomy on Postoperative Cognitive Functions

The Effect of Head Position During Thyroidectomy on Cerebral Oxygenation and Postoperative Cognitive Functions

Status

Completed

Phases

Unknown

Study type

Observational

Source

ClinicalTrials.gov

Registry ID

NCT04830293

Enrollment

Registered

2021-04-05

Start date

2019-03-01

Completion date

2020-12-31

Last updated

2021-04-05

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Carotid Doppler, Cerebral Perfusion, Thyroid

Keywords

Head position, Cerebral Oxygenation, Postoperative Cognitive Dysfunction

Brief summary

The aim of our study is to observe the effect of head-neck position of patients scheduled for thyroidectomy, on carotid artery blood flow, regional cerebral oxygen saturation measured using near-infrared spectroscopy technology, and postoperative cognitive dysfunction.

Interventions

PROCEDURECarotis Doppler Ultrasound

Neck was rotated about 30-45 ° to the opposite side of the image. The common carotid artery and internal jugular vein were viewed transversely on the B Mode USG image. Then, the probe was rotated approximately 90 ° and the carotid artery was visualized in the longitudinal plane. The probe and guide line were adjusted so that the Doppler angle was 60 °. The image was created with the guiding line parallel to the blood flow. After imaging of the carotid artery bifurcation, measurements were made 1 cm distal to this level.

Study design

Observational model

COHORT

Time perspective

PROSPECTIVE

Eligibility

Sex/Gender

ALL

Age

18 Years to 50 Years

Healthy volunteers

Yes

Inclusion criteria

* undergo a total thyroidectomy operation * ASA I-II * euthyroid patients in the preoperative period

Exclusion criteria

* Hemoglobin\< 8 g / dl * Hypertension * Hyperlipidemia * Pregnancy * Patients diagnosed with diabetes mellitus * Cerebrovascular insufficiency * Known carotid artery lesion * Metabolic diseases * Any intracranial pathology present * Surgeries exceeding 180 minutes

Design outcomes

Primary

Measure	Time frame	Description
Changes in cognitive functions	3 months after surgery	determine cognitive dysfunction using mini mental state examination

Secondary

Measure	Time frame	Description
Changes in Cerebral Perfusion	during surgery	Changes in main carotid artery blood flow and cerebral oxygenation by using carotid doppler

Countries

Turkey (Türkiye)

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026