When administering a rectal suppository to an adult, how far should the tip be inserted?

When administering a rectal suppository to an adult, how far should the tip be inserted?

• A. 1 inch
• B. 2 inches
• C. 3 inches
• D. 4 inches

Answer: (B)

Placing a rectal suppository correctly hinges on getting the medication beyond the anal sphincter and into the rectal vault so it can be retained and absorbed rather than expelled right away. For an adult, inserting the tip about 2 inches into the rectum places it past the anal canal into the space where the suppository will stay in place and begin to dissolve. If it’s inserted only shallowly, there’s a higher chance it will be expelled; inserting it much deeper isn’t typically needed and can cause discomfort. So, about 2 inches is the practical depth to ensure effective administration.

Placing a rectal suppository correctly hinges on getting the medication beyond the anal sphincter and into the rectal vault so it can be retained and absorbed rather than expelled right away. For an adult, inserting the tip about 2 inches into the rectum places it past the anal canal into the space where the suppository will stay in place and begin to dissolve. If it’s inserted only shallowly, there’s a higher chance it will be expelled; inserting it much deeper isn’t typically needed and can cause discomfort. So, about 2 inches is the practical depth to ensure effective administration.