Yarı oturur pozisyonunda yapılan total tiroidektomi sonrası gelişen global serebral iskemi

Catastrophic neurocognitive complications may develop after thyroidectomy performed in a sitting or semi-sitting position. These complications are due to the mismatch between the brachial artery and arterial blood pressure at the brain level. NIRS detects the decrease in cerebral perfusion pressure in real time when blood pressure decrease. In this case report, we aimed to present a case of global cerebral ischemia that developed due to a sudden decrease in arterial blood pressure during thyroidectomy performed in a semi-sitting position.