Predictors of Failed Spinal Anesthesia After Intrathecal Injection of Local Anesthetic for Cesarean Delivery: Are We Omitting the Omission Variable Bias?

MeSH terms

• Anesthesia, Obstetrical* / adverse effects
• Anesthesia, Obstetrical* / methods
• Anesthesia, Spinal* / methods
• Anesthetics, Local* / administration & dosage
• Cesarean Section*
• Female
• Humans
• Injections, Spinal*
• Pregnancy
• Risk Factors
• Treatment Failure