Final answer:
The main risk associated with B/L uterosacral ligament suspension for vaginal cuff/apical vaginal repairs is bowel injury due to the close proximity of the ligaments to the rectum during the procedure.
Step-by-step explanation:
The main risk associated with B/L uterosacral ligament suspension for vaginal cuff/apical vaginal repairs is bowel injury. In this surgical procedure aimed at correcting pelvic organ prolapse, the uterosacral ligaments are sutured to the apex of the vagina to provide support. During this process, the proximity of the ligaments to the rectum poses a risk for bowel injury. This risk is of particular concern due to the potential for serious complications should the bowel be perforated during surgery. Bowel injuries can lead to infection, sepsis, and the need for further surgical intervention to repair any damage.
In contrast, while infection and blood vessel injury are potential risks of any surgery, they are not as commonly associated with the specific complication profile of uterosacral ligament suspension. Voiding dysfunction can occur postoperatively, often due to edema or nerve trauma, but it is not the primary risk associated with the procedure itself.