American Association of Critical-Care Nurses (AACN) Certification Practice Test

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What condition results from diminished gastrointestinal motility without a mechanical obstruction?

  1. Gastroenteritis

  2. Ileus

  3. Appendicitis

  4. Diverticulitis

The correct answer is: Ileus

Diminished gastrointestinal motility without a mechanical obstruction is best described as ileus. Ileus refers to a temporary loss of normal peristalsis, which can lead to a halt in the movement of the intestines. This condition may occur for various reasons, such as after surgery, due to medications (like opioids), electrolyte imbalances, or inflammation. In contrast, gastroenteritis typically involves inflammation of the gastrointestinal tract but is not characterized specifically by diminished motility without obstruction. Appendicitis and diverticulitis both involve inflammation of specific parts of the gastrointestinal tract and commonly have associated obstruction or risk of obstruction. Therefore, ileus stands out as the condition that specifically aligns with the definition provided in the question.