This prospective observational study investigates the predictive value of anthropometric and hemodynamic indices for spinal anesthesia-induced hypotension (SAIH) during cesarean section. While spinal anesthesia is preferred for its rapid onset, SAIH remains a frequent complication risking maternal and fetal safety. The study enrolled parturients at Erciyes University, excluding those with hypertension or extreme weight/height. Preoperative measurements included BMI, waist circumference (WC), body roundness index (BRI), and modified shock index (MSI). Following standardized spinal anesthesia with hyperbaric bupivacaine (Harten's dosage), hemodynamic parameters and sensory block levels were monitored. This research aims to determine whether BRI and WC offer superior predictive utility compared with conventional markers such as BMI and MSI to enhance individualized risk assessment in obstetric anesthesia.
Eligibility
Sex
FEMALE
Min age
18 Months
Max age
45 Months
Healthy volunteers
No
Inclusion Criteria:
1. American Society of Anesthesiologists (ASA) Class II
2. Having regular antenatal visits
3. Singleton pregnancy at ≥37 weeks of gestation
4. Pregnant women aged 18-45 -
Exclusion Criteria:
1. Those with eclampsia, those with preeclampsia
2. Undergoing an emergency cesarean section
3. Those with bleeding diathesis and those receiving anticoagulant therapy
4. With a history of carotid artery stenosis,
5. Cardiovascular disease,
6. Hypertension,
7. Chronic obstructive pulmonary disease,
8. Heart rhythm outside of sinus
9. Patients with a history of cerebrovascular disease
10. Alcoholism or psychiatric illness
11. Placenta previa, accreta, and percreta
Primary outcome measure(s)
Incidence of Spinal Anesthesia-Induced Hypotension (SAIH) — From the time of spinal bupivacaine administration up to 30 minutes post-administration. The presence or absence of hypotension (binary variable) will be recorded. The predictive power of the independent variables (BMI, BRI, WC, MSI) for this condition will be evaluated using logistic regression. Nagelkerke's $R\^2$ was treated as a component of the analysis procedure, not as a measurement unit.
This page summarises publicly available registry data for informational purposes — not medical advice. Eligibility is determined by each study team; patients should discuss participation with their clinician.
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