The nurse is teaching a client about dietary methods to help manage exacerbations (flare-ups) of diverticulitis. What statement will the nurse make?

Furosemideis a potent loop diureticthat inhibits the sodium-potassium-chloride symporter in the thick ascending limb of the loop of Henle. By preventing the reabsorption of these electrolytes, it promotes osmotic diuresis, effectively reducing intravascular volume and systemic edema. In chronic kidney disease, monitoring the balance between fluid intake and excretion is vital to prevent circulatory overloadand worsening renal tension.

Rationale:

A.Palpating the abdomen is not an effective method for assessing the therapeutic response to a diuretic. While the nurse might check for ascites in advanced liver or renal failure, abdominal palpation does not provide quantifiable data regarding fluid loss. Daily weights and intake/output measurements provide the objective evidence needed to evaluate the success of pharmacological volume reduction.

B.Assessing diet history is important for managing sodium and fluid intake in renal patients, but it does not measure the actual effectiveness of furosemide. While a high-sodium diet can counteract the drug's effects, the diet history is a record of input rather than a measure of the drug's output and therapeutic impact on the patient's current fluid status.

C.Auscultating heart and breath sounds is a necessary assessment to detect complications of fluid volume excess, such as pulmonary edema or S3 gallops. However, while these findings provide a "snapshot" of current status, they are less sensitive for daily titration compared to weight. Improvements in lung sounds are secondary to the primary goal of actual fluid mass reduction.

D.Obtaining daily weightsis the most accurate and "best" action to assess the therapeutic effect of furosemide. Since 1 liter of fluid equals 1 kilogram of body mass, weight changes are the most sensitive indicator of fluid volumefluctuations. This provides the nurse and provider with objective, daily data to ensure the medication is successfully mobilizing excess extracellular fluid.

A perforated ulceroccurs when an erosion extends through the entire thickness of the gastrointestinal wall. This allows gastric or duodenal contents, including acid and bacteria, to leak into the peritoneal cavity. The resulting chemical peritonitiscauses an intense inflammatory response and severe muscle guarding, which is a clinical emergency requiring immediate surgical intervention to prevent sepsis.

Rationale:

A.A positive McBurney point refers to tenderness in the right lower quadrant and is a classic sign of acute appendicitis. While it indicates peritoneal irritation, it is anatomically misplaced for a duodenal ulcer, which is located in the upper gastrointestinal tract. A perforated ulcer would more likely cause generalized abdominal tenderness or upper quadrant pain.

B.Nausea and profuse vomiting are non-specific symptoms that can occur with many gastrointestinal disorders, including simple gastritis or bowel obstruction. While they may accompany a perforation, they do not provide the definitive evidence of peritoneal irritation that a physical exam finding does. Many patients with a sudden perforation may actually be in too much shock to vomit.

C.Absent bowel sounds can occur in the later stages of peritonitis as a paralytic ileus develops. However, this is a late and somewhat subjective finding. In the acute phase of a perforation, the most striking and diagnostic physical finding is the characteristic change in the abdominal wall's muscular tone in response to the chemical burn.

D.A rigid, board-like abdomenis the hallmark sign of a perforated ulcer. This is caused by involuntary muscle spasms and guarding as the peritoneum reacts to the leakage of acidic gastric contents. This "surgical abdomen" indicates a peritoneal emergencyand is the most significant assessment finding supporting a diagnosis of acute perforation and subsequent peritonitis.