Johns Hopkins Manual for GI Endoscopic Nurses, Third Edition

Mouen Khashab, MD; Toshunia Robinson, MD; Anthony Kalloo, MD

Chapter 47: Anorectal Manometry (continued)

Victor Chedid, MD; Sameer Dhalla, MD, MHS; John Clarke, MD

Anorectal manometry (ARM) is the most commonly performed test of anorectal function and physiology. It helps assess anorectal sphincter function, mechanisms of defecation and continence, rectal sensation, rectal compliance, and anorectal reflexes. Anorectal disorders affect 20% of the population, and ARM helps delineate the underlying cause and directs optimal management. With the proper history and clinical assessment, ARM helps confirm clinical diagnoses and provides additional information that cannot be elicited clinically. One prospective study showed ARM to be useful in 88%…