Following a myocardial infarction (MI) of the left ventricle, a patient develops left heart failure (LHF). Findings commonly associated with LHF include

low preload.

pleural effusion.

peripheral edema.

pulmonary edema.

Answer and Explanation

The Correct Answer is D

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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Free Nursing Study Resources

Correct Answer is C

Explanation

A. Although pursed-lip breathing may indirectly aid oxygen intake by preventing airway collapse, its primary benefit is to help with carbon dioxide removal.

B. Pursed-lip breathing does not directly strengthen respiratory muscles; it primarily helps with breath control.

C. In emphysema, air trapping occurs due to loss of lung elasticity. Pursed-lip breathing helps slow exhalation, which creates back pressure and assists in expelling trapped carbon dioxide.

D. Mucus removal is more effectively facilitated by other techniques like controlled coughing; pursed-lip breathing focuses on prolonged exhalation.

A. expiratory wheeze; PCO₂ 36 B. respiratory rate of 42; SO₂ 79% C. respiratory rate of 24; pH 7.46 D. barking cough; PO₂ 90

Correct Answer is B

Explanation

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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Following a myocardial infarction (MI) of the left ventricle, a patient develops left heart failure (LHF). Findings commonly associated with LHF include

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Naxlex Comprehensive Predictor Exams

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Correct Answer is C

Explanation

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Explanation

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