Bladder function after spinal anesthesia for cesarean section: an urodynamic evaluation

Area of Science:

• Anesthesiology
• Urology
• Obstetrics

Background:

• Evaluating the impact of spinal anesthesia on postoperative bladder function in cesarean delivery patients.
• Focusing on the combination of hyperbaric bupivacaine and sufentanil for spinal anesthesia.

Purpose of the Study:

• To assess the effects of spinal anesthesia (hyperbaric bupivacaine plus sufentanil) on bladder function post-cesarean section.
• To analyze changes in bladder sensation, voiding patterns, and reflexes over time.

Main Methods:

• Enrolled 30 healthy pregnant women undergoing elective cesarean section under spinal anesthesia.
• Measured cystometry, bladder sensation, spontaneous voiding rate, post-void residual volume, and reflexes at 4, 6, and 8 hours post-anesthesia.

Main Results:

• Significant differences in bladder sensation (first sensation, desire, strong desire) and volumes at 4, 6, and 8 hours post-anesthesia.
• Spontaneous micturition rates increased significantly, with 80% of patients voiding at 8 hours compared to 40% at 6 hours.
• Reflex responses (anocutaneous, bulbocavernosus) showed a lower incidence of absence/light responses at 4 hours versus 6 and 8 hours.

Conclusions:

• Spinal anesthesia with bupivacaine and sufentanil causes significant, albeit temporary, bladder dysfunction.
• Proprioceptive bladder sensation recovers rapidly, but complete restoration of spontaneous voiding capacity requires more time.
• Close monitoring of urinary function and bladder distension is recommended post-procedure.