Spinal anesthesia-induced hypotension is a common and clinically significant complication in elderly patients undergoing oncologic surgery. Early identification of patients at risk for hemodynamic instability remains a major challenge in perioperative management. Skin conductance reflects sympathetic nervous system activity and may provide a noninvasive indicator of autonomic responses. This prospective observational study aims to evaluate whether skin conductance measurements can predict the development of hypotension following spinal anesthesia in geriatric oncology patients undergoing urologic surgery. The findings may contribute to improved perioperative monitoring and early risk stratification in this vulnerable patient population.
Patients aged 65 years and older
Patients scheduled for elective urologic oncology surgery under spinal anesthesia
American Society of Anesthesiologists (ASA) physical status I-III
Patients who provide written informed consent to participate in the study
Refusal to participate or inability to provide informed consent
Contraindication to spinal anesthesia (e.g., infection at puncture site, coagulopathy)
Severe cardiac conduction abnormalities or presence of a cardiac pacemaker
Severe autonomic dysfunction or known neuropathy affecting autonomic responses