A nurse in a cardiac care unit is caring for a client with acute right-sided heart failure. Which of the following findings should the nurse expect?
Increased pulmonary artery wedge pressure (PAWP).
Elevated central venous pressure (CVP).
Decreased brain natriuretic peptide (BNP).
Decreased specific gravity
The Correct Answer is B
Right-sided heart failure is a condition in which the right ventricle fails to pump blood effectively to the lungs, causing a backup of blood in the systemic circulation. This leads to increased pressure in the right atrium and the vena cava, which can be measured by the central venous pressure (CVP). A normal CVP is 2 to 6 mm Hg, but in right-sided heart failure, it can rise above 10 mm Hg. Symptoms of right-sided heart failure include peripheral edema, jugular venous distension, hepatomegaly, ascites, and weight gain.
a. Increased pulmonary artery wedge pressure (PAWP). This statement is incorrect because it describes a finding of left-sided heart failure, not right-sided heart failure. Left-sided heart failure is a condition in which the left ventricle fails to pump blood effectively to the systemic circulation, causing a backup of blood in the pulmonary circulation. This leads to increased pressure in the left atrium and the pulmonary capillaries, which can be measured by the pulmonary artery wedge pressure (PAWP). A normal PAWP is 6 to 12 mm Hg, but in left-sided heart failure, it can rise above 18 mm Hg. Symptoms of left-sided heart failure include dyspnea, orthopnea, paroxysmal nocturnal dyspnea, crackles in the lungs, and pink frothy sputum.
c. Decreased brain natriuretic peptide (BNP). This statement is incorrect because it describes a finding of normal or reduced cardiac function, not heart failure. Brain natriuretic peptide (BNP) is a hormone secreted by the cardiac cells in response to increased stretch and pressure in the ventricles. It acts as a diuretic and a vasodilator, lowering blood volume and blood pressure. BNP is used as a biomarker for diagnosing and monitoring heart failure, as it reflects the degree of ventricular dysfunction. A normal BNP level is less than 100 pg/mL, but in heart failure, it can rise above 400 pg/mL.
d. Decreased specific gravity. This statement is incorrect because it describes a finding of dilute urine, not concentrated urine. Specific gravity is a measure of the concentration of solutes in urine, reflecting the ability of the kidneys to regulate fluid balance. A normal specific gravity is 1.005 to 1.030, but it can vary depending on fluid intake and output, hydration status, and renal function. In right-sided heart failure, fluid retention and reduced renal perfusion can cause oliguria and increased specific gravity of urine.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is A
Explanation
a.This is appropriate as regular, moderate exercise can help improve cardiovascular health and functional capacity in clients with heart failure. It is essential to discuss appropriate types and levels of exercise based on the individual’s condition.
b.This is incorrect because clients should be instructed to notify the provider if they gain 1 kg (2.2 lbs) in one day or 2 kg (4.4 lbs) in one week. A weight gain of 0.5 kg is not typically a threshold for concern.
c. Take diuretics early in the morning and before bedtime is wrong because it may disrupt the client's sleep patern and cause nocturia. The nurse should advise the client to take diuretics early in the morning and avoid taking them in the evening or at night, unless prescribed otherwise.
d. Take naproxen for generalized discomfort is wrong because naproxen is a nonsteroidal anti-inflammatory drug (NSAID) that can worsen heart failure by causing sodium and water retention, increasing blood pressure, and reducing the effectiveness of diuretics and other heart failure medications. The nurse should advise the client to avoid NSAIDs and use acetaminophen or other alternatives for pain relief, as prescribed by the provider.
Correct Answer is B
Explanation
The correct answer is B
Choice B reason: Intermittent claudication
Intermittent claudication is a characteristic symptom of PAD in the early stage, due to the reduced blood flow to the muscles during exercise. It is a cramping pain in the legs that occurs with walking and is relieved by rest.
Choice A reason: Dependent rubor is a sign of PAD in the advanced stage, due to the impaired vasodilation and reactive hyperemia. It is a reddish color of the lower extremities that occurs when they are lowered and disappears when they are elevated.
Choice C reason: Foot ulcers are a complication of PAD in the late stage, due to the poor wound healing and tissue necrosis. They are usually located on the toes, heels, or pressure points.
Choice D reason: Rest pain is another sign of PAD in the late stage, due to the severe ischemia and nerve damage. It is a persistent pain in the feet or toes that occurs at night and is not relieved by rest.
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