The Nurse Must Administer an Enema to an Adult Patient

The nurse must administer an enema to an adult patient with constipation. Which of the following would be a safe and effective distance for the nurse to insert the tubing into the patient's rectum? Select all that apply.

A) 2 in. (5.1 cm)
B) 3 in. (7.6 cm)
C) 4 in. (10.2 cm)
D) 5 in. (12.7 cm)
E) 6 in (15.2 cm)