The Impact of a Shared Decision-Making Intervention on Intraoperative Patient Experience During Elective Cesarean Delivery Under Spinal Anesthesia

All participants will receive spinal anesthesia in the sitting position at either the L3-L4 or L4-L5 interspace using 0.5% hyperbaric bupivacaine (dose adjusted by patient height) combined with fentanyl 15 mcg. Surgery will commence only after confirmation of a bilateral sensory block to at least the T5 dermatome and motor block. Standard monitoring will be applied continuously throughout the procedure, including ECG, heart rate, noninvasive blood pressure, and pulse oximetry. A preload of 500 mL lactated Ringer's solution will be administered. Intraoperative hypotension, bradycardia, nausea, and respiratory depression will be treated according to institutional protocols. Postoperative pain will be managed using paracetamol and ketorolac, with intravenous morphine administered as rescue analgesia for NRS ≥4.

Intervention Protocol Control Group (Standard Care) Patients will receive standard preoperative counseling delivered by the anesthesiologist using the institutional script. No structured shared decision-making process or documented preference for intraoperative analgesic management will be included.

SDM Group (Structured Intervention)

Patients randomized to the SDM group will participate in a structured 10-15 minute shared decision-making session, based on the Elwyn three-step model(8) (choice talk, option talk, decision talk), supported by an Arabic Option Grid™. Patients will be presented with two intraoperative comfort management options:

Proactive Plan: prophylactic IV ketamine 0.2 mg/kg or IV midazolam 1 mg given prior to incision.

Reactive Plan: no prophylactic medication; rescue IV fentanyl 50 mcg administered only if NRS ≥4.

The patient's preference will be documented, sealed in an envelope, and handed to the blinded attending anesthesiologist.

Implementation

After confirming adequate spinal block (sensory level to T6), the attending anesthesiologist will open the envelope and implement the assigned plan:

Proactive: administer the chosen medication prior to skin incision. Reactive: administer rescue analgesia only if pain is reported. Pain will be assessed at four predefined intraoperative time points: skin incision, uterine incision, delivery, and peritoneal closure. Continuous communication will be maintained, and any request for analgesia or conversion to general anesthesia will be recorded.

Inclusion criteria

• pregnant women aged 18 years or older, with a singleton pregnancy
• scheduled for elective cesarean delivery under spinal anesthesia
• classified as ASA physical status I or II, and fluent in Arabic.

Exclusion criteria

• refusal to participate; contraindications to spinal anesthesia (such as coagulopathy, infection at the injection site, or severe hypovolemia)
• emergency cesarean procedures
• cognitive impairment
• history of chronic pain disorders
• regular preoperative analgesic use
• conversion to general anesthesia.