Which diagnostic test will be most useful to the nurse in determining whether a client admitted with acute shortness of breath has heart failure?

B-type natriuretic peptide (BNP) is a diagnostic blood test that can be most useful to the nurse in determining whether a client admitted with acute shortness of breath has heart failure.

BNP is a hormone produced by the heart in response to increased pressure and volume in the heart, especially in cases of heart failure. When the heart is under stress, such as in heart failure, it releases BNP into the bloodstream. Elevated levels of BNP are strongly indicative of heart failure, and the testis particularly helpful in differentiating heart failure from other conditions that may present withsimilar symptoms, such as pulmonary disorders.

When a patient presents with acute shortness of breath, the BNP test can provide valuable information to help guide the diagnosis and treatment. If the BNP level is elevated, it suggests that heart failure is likely the cause of the symptoms, and appropriate interventions can be initiated promptly.

While other diagnostic tests like serum troponin (A) are important for assessing heart damage in conditions like myocardial infarction (heart attack), they may not be as specific for heart failure.

Arterial blood gases (B) are helpful in evaluating gas exchange and acid-base balance, especially in patients with respiratory distress, but they are not specific for diagnosing heart failure.

A 12-lead electrocardiogram (ECG) (C) can provide valuable information about the heart's electrical activity and any signs of acute myocardial infarction or other cardiac abnormalities, but it is not the primary test for diagnosing heart failure. An ECG can support the diagnosis if specific changes suggestive of heart failure are present, but the BNP test provides more direct evidence for heart failure diagnosis.

Chronic kidney disease (CKD) is a condition where the kidneys are damaged or unable to filter blood effectively over time, leading to a gradual loss of kidney function. Several risk factors can increase the likelihood of developing CKD, and among them, diabetes and hypertension are the most common.

Diabetes is a significant risk factor for developing CKD. It can cause damage to the small blood vessels in the kidneys, impairing their ability to filter waste and fluid from the blood properly. Native Americans, along with other racial and ethnic minorities, are at a higher risk of developing diabetes compared to the general population.

While hypertension (high blood pressure) is also a risk factor for CKD, diabetes carries a higher risk. However, it's important to note that hypertension is often a comorbidity associated with CKD and can further worsen kidney function when present.

The other options listed (a 50-year-old white female with hypertension, a 40-year-old Hispanic female with cardiovascular disease, and a 28-year-old African American female with a urinary tract infection) are also at risk for CKD, but the 61-year-old Native American male with diabetes is at the highest risk based on the information provided. All patients should be educated about preventive measures to protect their kidney health, but special attention should be given to individuals with diabetes due to its significant impact on kidney function.