ASPEN Certified Nutrition Support Clinician (CNSC) Practice Exam

What degree of head-of-bed elevation is recommended to reduce aspiration risk in critically ill patients?

15-30 degrees 30-45 degrees 60 degrees 0 degrees

Correct Answer:

30-45 degrees

Explanation:

Elevating the head of the bed to a semi-recumbent position, about 30 to 45 degrees, reduces aspiration risk in critically ill patients by decreasing gastroesophageal reflux and the chance that fed or oropharyngeal contents will enter the airway during episodes of regurgitation or coughing. This angle provides a good balance between protection against aspiration and maintaining ventilation, tube stability, and comfort. Lower angles such as 15-30 degrees are less protective, while zero degrees offers no protection, and very high angles like 60 degrees can cause other issues without adding significant safety benefits.

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