Effect of Hypertension on Hemodynamics in the Prone Position

Long-term use of antihypertensive drugs in patients diagnosed with hypertension may cause sharp fluctuations in the patient's hemodynamic values such as blood pressure during anesthesia. Low blood pressure that occurs during surgery may cause serious organ failure and even death, especially in patients in the prone position. These conditions resulting from hypotension increase with prolonged exposure to hypotension. Therefore, it is very important to predict and prevent hypotension in spinal surgery. In patients with hypertension, the prone position may cause some hemodynamic changes compared to those without comorbidities. Therefore, in this study, researchers planned to investigate the changes in some hemodynamic values in patients with hypertension and without comorbidities who were scheduled for spinal surgery.

Inclusion Criteria: * Patients with ASA scores between 1 and 3 who wish to participate in the study. * Patients between the ages of 18-75 who are scheduled for vertebral surgery Exclusion Criteria: * Heart failure * Severe arrhythmia * Severe respiratory failure * Renal failure * Chronic liver disease * Moderate and severe anemia * Severe fluid and electrolyte disturbances * Uncontrolled hypertension (systolic blood pressure ≥ 180 mmHg or diastolic blood pressure ≥ 100 mmHg) * Severe thyroid dysfunction * Advanced psychiatric illness.