The nurse is admitting a client with possible tuberculosis (TB). The client is placed in a private room with airborne precautions pending diagnostic test results.
Which diagnostic test should the nurse review to confirm the diagnosis of TB?

Choice A rationale:
Anorexia is a common symptom of cirrhosis, but it is not the most immediate concern in a client with esophageal varices.
Anorexia can result from various factors, including impaired liver function, hormonal imbalances, early satiety due to ascites,
and nausea.
While it's important to address anorexia to maintain nutritional status, it doesn't directly indicate a life-threatening
complication like bleeding varices.
Choice B rationale:
Brown, foamy urine is a characteristic of kidney problems, specifically proteinuria.
It's not directly associated with esophageal varices or their complications.
While cirrhosis can affect kidney function due to fluid imbalances and impaired filtering, brown, foamy urine wouldn't be the
primary indicator of bleeding varices.
Choice C rationale:
Clay-colored stool is a sign of biliary obstruction, which can occur in cirrhosis due to impaired bile flow.
However, it's not a direct indicator of bleeding varices.
Clay-colored stool results from a lack of bile pigments in the stool, which give it its typical brown color.
Choice D rationale:
Hematemesis, or vomiting of blood, is the most critical symptom to monitor in a client with esophageal varices.
Here's why:
Esophageal varices are enlarged, swollen veins in the esophagus that develop due to increased pressure in the portal venous
system, a common consequence of cirrhosis.
These varices are fragile and prone to rupture, which can lead to massive, life-threatening bleeding.
Hematemesis is a clear sign that variceal bleeding has occurred and requires immediate intervention.

Measuring oxygen saturation is not directly relevant to the administration of vancomycin or the monitoring of its potential side effects. While oxygen saturation is important to assess in patients with respiratory concerns, it does not provide information about kidney function, which is essential for safe vancomycin use.

Choice B rationale:

Auscultating bowel sounds, while a part of general abdominal assessment, is not the most crucial action before administering vancomycin. Vancomycin is not known to have significant effects on bowel motility, and its primary concern is nephrotoxicity.

Choice C rationale:

Assessing body temperature can be helpful in evaluating for infection, but it is not the most specific or sensitive indicator of vancomycin-related adverse effects. Fever can be a sign of various conditions, and it does not directly assess kidney function.

Choice D rationale:

Checking serum creatinine is the most essential action before administering vancomycin because it allows for assessment of kidney function. Vancomycin is primarily excreted by the kidneys, and impaired renal function can lead to elevated drug levels and increased risk of nephrotoxicity. By checking serum creatinine, the nurse can ensure that the patient's kidney function is adequate to safely excrete vancomycin and can adjust the dosage or frequency of administration if necessary.