RN Nursing · Pharmacokinetics and Routes of Administration · Practice question
Which position is most appropriate to place the patient to administer a suppository?
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Prone
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✓
Sim's
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Supine
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Right lateral
Answer & explanation
Correct: Sim's
Sims' position, also called the left lateral Sims' position, is the standard and most appropriate position for rectal suppository administration. In this position the patient lies on their left side with the lower leg straight and the upper knee drawn toward the chest. This positioning straightens the rectum, facilitates visualization of the anus, and allows gravity to assist in retaining the suppository once inserted. It also promotes patient comfort and reduces sphincter tension. The prone position places the patient face-down and is not used for suppository insertion because it is uncomfortable and does not provide access or visualization. The supine position (lying flat on the back) does not allow adequate access to the rectum. The right lateral position is not preferred because it does not align with the natural anatomy of the sigmoid colon, making insertion more difficult and retention less likely. The left lateral Sims' position aligns with the anatomical curve of the rectum and sigmoid colon, which runs from the lower right to the upper left, meaning the left-side-down position best facilitates proper placement and absorption of the suppository.
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