The signs and symptoms (S&S) of respiratory failure may be identified in the patient who has a(n):

expiratory wheeze; PCO₂ 36

respiratory rate of 42; SO₂ 79%

respiratory rate of 24; pH 7.46

barking cough; PO₂ 90

Answer and Explanation

The Correct Answer is B

A. An expiratory wheeze with a PCO₂ of 36 (within normal range) does not typically indicate respiratory failure.

B. A respiratory rate of 42 and a low oxygen saturation (SO₂) of 79% indicate hypoxemia and respiratory distress, which are hallmarks of respiratory failure.

C. A respiratory rate of 24 with a pH of 7.46 suggests mild hyperventilation or anxiety rather than respiratory failure.

D. A barking cough and a PO₂ of 90 are not indicative of respiratory failure; PO₂ of 90 is within normal limits.

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Correct Answer is C

Explanation

A. A specific gravity of 1.000 indicates very dilute urine, not concentrated. This would not be typical of dehydration, where urine would be concentrated with a high specific gravity.

B. Acute kidney injury (AKI) typically results in more concentrated urine due to retained waste products; therefore, specific gravity would likely be higher, not at the minimum level of 1.000.

C. A specific gravity of 1.000 indicates the kidney’s inability to concentrate urine, often seen in renal impairment where kidney function is compromised, leading to very dilute urine.

D. Specific gravity is unrelated to testicular cancer or an undescended testis, as it measures kidney concentration ability rather than reproductive health.

A. low preload. B. pleural effusion. C. peripheral edema. D. pulmonary edema.

Correct Answer is D

Explanation

A. Preload is typically increased in LHF, as blood backs up in the left side of the heart.

B. Although pleural effusion can occur as a secondary complication in some cases of heart failure, it is not as directly indicative of LHF as pulmonary edema.

C. Peripheral edema is more characteristic of right heart failure, where blood backs up in the systemic circulation.

D. Pulmonary edema is a hallmark finding in left heart failure as the left ventricle fails to pump effectively, causing fluid to accumulate in the lungs due to back pressure from the left atrium into the pulmonary veins.

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The signs and symptoms (S&S) of respiratory failure may be identified in the patient who has a(n):

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Naxlex Comprehensive Predictor Exams

Correct Answer is C

Explanation

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Correct Answer is D

Explanation

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