What factor would most likely delay a patient's discharge after receiving spinal anesthesia?

The factor that would most likely delay a patient's discharge after receiving spinal anesthesia is the inability to void. After spinal anesthesia, patients often experience temporary loss of sensation and motor function, which can affect their ability to urinate.

It is crucial for patients to demonstrate normal urinary function before being discharged from the PACU, as this is a key indicator that they have recovered adequately from the effects of anesthesia and are ready to resume normal activities. If a patient is unable to void, this may indicate potential complications such as urinary retention, which necessitates further assessment and management before discharge can occur. Consequently, an inability to void presents a significant barrier to safe discharge in this context.

While ineffective pain management, pulse oximetry readings below 90%, and excessive nausea can also impact a patient's overall recovery and readiness for discharge, the inability to void is a more direct consideration following the use of spinal anesthesia, as it is specifically tied to the effects of the anesthesia on bladder function.