A client with emphysema is reporting difficulty breathing and exhibiting audible wheezing. The nurse administers albuterol as prescribed for the third time within the last 12 hours. Which assessment finding warrants immediate intervention by the nurse?

Choice A reason: Furosemide, a loop diuretic, promotes urine output by inhibiting sodium reabsorption in the kidneys, reducing fluid overload in heart failure. Increased urine output indicates effective diuresis, alleviating pulmonary and peripheral edema, making it the primary sign of therapeutic efficacy.

Choice B reason: Elevated blood pressure is not an expected effect of furosemide, which reduces preload and blood volume, often lowering pressure. Effective diuresis is shown by increased urine output, as this directly reflects fluid removal, critical for heart failure management.

Choice C reason: Increased heart rate is not a direct indicator of furosemide efficacy. Diuresis reduces cardiac workload, potentially stabilizing heart rate, but urine output is the primary measure, as it confirms fluid excretion, the medication’s main action in heart failure.

Choice D reason: Weight gain indicates fluid retention, the opposite of furosemide’s goal. Effective diuresis causes weight loss due to fluid excretion. Increased urine output is the key sign, as it directly measures the diuretic’s action in reducing heart failure-related fluid overload.

Choice A reason: Rebound tenderness in the right lower quadrant (McBurney’s point) is a hallmark of appendicitis, indicating peritoneal irritation from an inflamed appendix. This localized pain, elicited on palpation release, is highly specific, guiding urgent surgical evaluation to prevent rupture and peritonitis.

Choice B reason: Diffuse abdominal pain is nonspecific and occurs in various conditions, not uniquely appendicitis, which typically presents with localized right lower quadrant pain. Rebound tenderness is more diagnostic, as it directly reflects appendiceal inflammation, making it the priority finding.

Choice C reason: Decreased bowel sounds may occur in appendicitis due to ileus but are nonspecific, seen in other abdominal conditions. Rebound tenderness is more indicative, as it localizes to the appendix, confirming peritoneal irritation, critical for diagnosing acute appendicitis.

Choice D reason: Elevated blood pressure is not specific to appendicitis and may reflect pain or stress. Rebound tenderness directly indicates appendiceal inflammation, making it the most reliable finding, as it guides diagnosis and urgent intervention to prevent complications like perforation.