What is the best practice for anesthesia in a term cesarean delivery for a healthy adult woman (American Society of Anesthesiologists physical status I–III) without contraindications?

Best Practice for Cesarean Section Anesthesia

Neuraxial anesthesia (spinal or epidural) should be selected over general anesthesia for cesarean delivery in healthy term patients without contraindications. 1

Primary Anesthetic Technique

The American Society of Anesthesiologists Practice Guidelines explicitly recommend considering neuraxial techniques in preference to general anesthesia for most cesarean deliveries 1. This recommendation is based on improved maternal safety profiles, reduced anesthesia-related complications, and better maternal-infant bonding immediately after delivery.

Spinal vs. Epidural Selection

For scheduled cesarean delivery, single-shot spinal anesthesia is the preferred neuraxial technique due to:

• Rapid, reliable onset
• Dense surgical anesthesia
• Technical simplicity
• Lower failure rates

When using spinal anesthesia, always use pencil-point spinal needles instead of cutting-bevel needles to minimize the risk of postdural puncture headache 1. This is a strong, evidence-based recommendation with Category A1-B evidence.

For urgent cesarean delivery when an epidural catheter is already in place for labor, use the existing catheter rather than initiating new spinal or general anesthesia 1. This avoids delays and additional procedures.

When General Anesthesia Is Appropriate

General anesthesia may be the most appropriate choice in specific emergency circumstances 1:

• Profound fetal bradycardia
• Ruptured uterus
• Severe hemorrhage
• Severe placental abruption
• Umbilical cord prolapse
• Preterm footling breech

However, avoid unnecessary general anesthesia as it is associated with increased maternal complications including serious anesthesia-related events, surgical site infections, venous thromboembolic events, greater postoperative pain, and higher rates of postpartum depression 2.

Hemodynamic Management

Hypotension Prevention and Treatment

Use IV fluid preloading or coloading to reduce maternal hypotension after spinal anesthesia, but do not delay spinal anesthesia to administer a fixed volume of IV fluid 1. The goal is perioperative euvolemia 3.

For treating hypotension during neuraxial anesthesia:

• Phenylephrine is preferred over ephedrine in the absence of maternal bradycardia because it provides improved fetal acid-base status in uncomplicated pregnancies 1
• Either agent may be used, but phenylephrine should be your first choice

Maintain uterine displacement (usually left displacement) until delivery regardless of anesthetic technique 1 to prevent aortocaval compression.

Postoperative Analgesia

For postoperative pain control after neuraxial anesthesia, use neuraxial opioids rather than intermittent parenteral opioid injections 1. Neuraxial morphine is the most effective form of postoperative analgesia for cesarean delivery 4.

When using neuraxial morphine:

• Use low-dose protocols
• Implement multimodal analgesia with NSAIDs/acetaminophen 5
• Risk-stratify patients to determine appropriate respiratory monitoring intensity 4

Preoperative Preparation

Administer IV antibiotics within 60 minutes before skin incision 3:

• First-generation cephalosporin for all women
• Add azithromycin for women in labor or with ruptured membranes

Use chlorhexidine-alcohol for abdominal skin preparation (preferred over aqueous povidone-iodine) 3.

Consider vaginal preparation with povidone-iodine solution to reduce postcesarean infections 3.

Prevention of Hypothermia

Actively prevent maternal hypothermia using 3:

• Forced air warming devices
• Warmed IV fluids
• Increased operating room temperature

This requires appropriate patient monitoring to guide warming interventions.

Equipment and Personnel Requirements

Equipment, facilities, and support personnel in the labor and delivery operating suite must be comparable to those in the main operating suite 1. Resources for managing potential complications (failed intubation, inadequate anesthesia, hypotension, respiratory depression, local anesthetic systemic toxicity) must be immediately available.

Common Pitfalls to Avoid

• Do not routinely perform cesarean delivery under general anesthesia unless specific emergency indications exist—neuraxial techniques are safer 2
• Do not use cutting-bevel spinal needles—pencil-point needles significantly reduce postdural puncture headache
• Do not delay spinal placement for arbitrary fluid boluses—coload fluids while performing the block
• Do not use ephedrine as first-line vasopressor when phenylephrine is available and no maternal bradycardia exists
• Do not forget left uterine displacement—this simple maneuver prevents significant hemodynamic compromise

This algorithmic approach prioritizes maternal safety, neonatal outcomes, and quality of recovery while providing clear decision points for anesthetic management.