A nurse is assessing a client following the insertion of a central venous catheter. Which of the following findings indicates a pneumothorax?
Diminished breath sounds
Distended neck veins
Irregular heart rate
Itching over the incision
The Correct Answer is A
A. Diminished breath sounds: A pneumothorax occurs when air accumulates in the pleural space, leading to lung collapse. This results in reduced air entry, causing diminished or absent breath sounds on the affected side. Other symptoms may include dyspnea, tachypnea, and chest pain.
B. Distended neck veins: Neck vein distention is more commonly associated with conditions such as cardiac tamponade or superior vena cava syndrome. A pneumothorax typically causes respiratory distress rather than venous congestion. If a tension pneumothorax develops, neck vein distention may occur, but it is not an early or primary sign.
C. Irregular heart rate: While severe cases of pneumothorax can cause cardiovascular compromise due to pressure on the heart and great vessels, an irregular heart rate is not a direct or early indicator. Cardiac arrhythmias are more often seen with electrolyte imbalances, cardiac ischemia, or other primary heart conditions.
D. Itching over the incision: Itching at the catheter insertion site is a common postoperative reaction, often related to healing, adhesive irritation, or mild inflammation. It is not indicative of a pneumothorax, which primarily presents with respiratory distress and absent or diminished breath sounds.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is C
Explanation
A. Thalassemia: A genetic blood disorder affecting hemoglobin production. While patients with severe anemia may have an increased bleeding risk, thalassemia itself is not a contraindication to heparin. Caution is needed if the patient has splenomegaly or significant anemia.
B. Rheumatoid arthritis: An autoimmune condition that can increase bleeding risk due to chronic inflammation and medication use, such as NSAIDs or corticosteroids. However, heparin is not contraindicated unless there is an associated bleeding disorder or severe thrombocytopenia.
C. Thrombocytopenia: A condition characterized by a low platelet count, significantly increasing the risk of bleeding. Heparin use can worsen this condition, especially in cases of heparin-induced thrombocytopenia (HIT), which can lead to both bleeding and thrombosis.
D. COPD: A chronic lung disease that does not directly contraindicate heparin therapy. While COPD patients may be at risk for deep vein thrombosis due to immobility, heparin remains a standard prophylactic treatment unless there are other bleeding risks.
Correct Answer is D
Explanation
A. Temperature of 38° C (100.4° F): An elevated temperature may indicate infection, which is a potential complication of TPN due to the risk of central line-associated bloodstream infections. However, fever is not a sign of fluid volume overload.
B. Urinary output of 20 mL in the past hour: Oliguria (low urine output) is more commonly associated with dehydration or renal impairment rather than fluid volume overload. In fluid overload, urine output may initially increase if kidney function is normal.
C. +1 pedal pulses: Weak pulses can indicate poor circulation, hypovolemia, or peripheral vascular disease. In fluid overload, bounding pulses rather than weak pulses are typically observed due to increased intravascular volume.
D. S3 heart sound: An S3 heart sound (ventricular gallop) occurs when excess fluid volume causes rapid ventricular filling, leading to abnormal heart sounds. This finding is a classic sign of fluid volume overload and can indicate heart failure or significant fluid retention.
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