Which outcome is least associated with a celiac plexus block?

A celiac plexus block is a procedure used primarily for pain relief in patients with abdominal issues, often related to cancer or other chronic painful conditions. This block disrupts the pain signals transmitted through the celiac plexus, which innervates various abdominal organs. The outcomes associated with this procedure include various side effects that can occur due to the nature of the block and the anatomy involved.

The least associated outcome with a celiac plexus block is urinary incontinence. While it's possible for celiac plexus blocks to affect functions related to the abdominal organs, urinary incontinence is more closely linked to issues with nerve pathways governing bladder function, which are not the primary targets of a celiac plexus block. Consequently, patients will not typically experience urinary incontinence as a direct result of this type of nerve block.

In contrast, conditions like diarrhea may occur due to effects on gastrointestinal motility, orthostatic hypotension could happen due to the block affecting sympathetic nervous system pathways, and retroperitoneal hemorrhage, though rare, is a concern associated with any procedure that involves needle placement in the abdominal region, particularly in a space where vascular structures are present.