Empty or unidentifiable bladder
Empty bladder introduces risk of through-and-through penetration of the bladder
No minimum reported bladder volume established
Bowel anterior to bladder
Empty bladder introduces risk of through-and-through penetration of the bladder
No minimum reported bladder volume established
Suprapubic catheter placement
Suprapubic bladder aspiration
Bladder lavage
Bladder ultrasound
Suprapubic catheter changing or replacement
Perianal block
Whole bowel irrigation
Renal ultrasound