To compare the incidence of hypotension after spinal anesthesia and the values of perfusion index, pleth variability index, tissue oxygen saturation and tissue hemoglobin index between those who developed hypotension and those who did not develop hypotension over time.

Inclusion Criteria:

• Those who underwent elective cesarean section over the age of 18,
• American Society of Anesthesia I and II,
• Agree to participate in the study,

Exclusion Criteria:

• <18 or >45 years,
• preeclampsia,
• cardiovascular disorders,
• fetal abnormalities,
• not undergoing spinal anesthesia or undergoing general anesthesia during surgery,
• not agreeing to participate in the study

Pregnant women who will have a cesarean section

Fifty pregnant women over the age of 18 who underwent elective cesarean section, were American Society of Anesthesia I and II, and agreed to participate in the study.