Final answer:
High-pitched bowel sounds should be reported to the primary healthcare provider as they may indicate a serious condition such as intestinal obstruction or inflammation.
Step-by-step explanation:
When a client is admitted to the emergency department with abdominal discomfort and constipation, there are specific findings during an abdominal assessment that a nurse should report to the primary healthcare provider. Among the choices given:
- Striae are stretch marks on the skin and are typically not immediately concerning for acute abdominal issues.
 - Borborygmi refer to loud, gurgling bowel sounds that suggest increased gastrointestinal activity which could be normal or related to a gastrointestinal disorder.
 - High-pitched bowel sounds may indicate intestinal obstruction or inflammation and should be reported.
 - Tympany noted on percussion generally indicates the presence of gas in the gastrointestinal tract and is a common finding.
 
Therefore, the nurse should report high-pitched bowel sounds to the primary healthcare provider as this may indicate a more serious underlying condition requiring immediate attention.