Which of the following may increase bowel sounds?

Early intestinal obstruction is the condition most likely to increase bowel sounds. In the early phase of mechanical obstruction, the bowel proximal to the blockage becomes hyperactive as peristalsis intensifies in an attempt to push contents past the obstruction. This produces high-pitched, rushing, or tinkling bowel sounds that are hyperactive on auscultation. As obstruction progresses, bowel sounds eventually decrease and disappear, but in the early stage they are characteristically increased. An adynamic ileus — also called paralytic ileus — involves cessation of bowel motility without a mechanical cause; it produces absent or markedly diminished bowel sounds, not increased ones. Acute peritonitis causes irritation of the peritoneum and leads to a rigid, silent abdomen as bowel motility shuts down in response to inflammation, resulting in absent or very reduced bowel sounds. Chronic constipation is associated with sluggish peristalsis and typically reduced bowel sounds, not increased activity. Understanding the pattern of bowel sounds in different GI pathologies is a foundational skill in abdominal assessment and helps differentiate mechanical from non-mechanical causes of bowel dysfunction.