When auscultating the chest of an older patient in respiratory distress, it is best to:
Begin listening at the apices.
Begin listening at the lung bases.
Begin listening on the anterior chest.
Ask the patient to breathe through the nose with the mouth closed.
The Correct Answer is B
When auscultating the chest of an older patient in respiratory distress, it is best to begin listening at the lung bases. Air movement in the lower lobes is often the first area affected by fluid accumulation, atelectasis, or other pathological changes, making this the most effective starting point for detecting abnormal breath sounds.
Rationale for correct answer:
2. Begin listening at the lung bases. The lung bases are the most dependent areas and are commonly involved in early respiratory problems such as crackles from fluid overload, pneumonia, or atelectasis. Starting here ensures that the nurse identifies abnormal sounds where they are most likely to appear first. From there, the nurse moves upward to assess the full lung field for comparison and progression of sounds. This systematic approach helps detect even subtle changes in ventilation.
Rationale for incorrect answers:
1. Begin listening at the apices. Although the apices should be assessed, starting here may cause the nurse to miss early signs of congestion or collapse at the bases. The apices are less commonly affected in early respiratory distress.
3. Begin listening on the anterior chest. While anterior assessment is necessary, lung sounds—especially in conditions like heart failure or pneumonia—are often more prominent and diagnostically significant on the posterior side, particularly at the bases.
4. Ask the patient to breathe through the nose with the mouth closed. During auscultation, the patient should breathe slowly and deeply through the mouth, not the nose, to ensure maximal air movement and clearer breath sounds. Breathing through the nose may muffle or obscure important respiratory findings.
Take-home points:
- Start auscultation at the lung bases, where abnormalities are most likely to be detected first.
- Assess both posterior and anterior chest fields systematically for comparison.
- Instruct patients to breathe deeply through the mouth to enhance sound clarity.
- This method improves early detection of respiratory compromise in older adults, who are more prone to lower-lobe complications.
Nursing Test Bank
Naxlex Comprehensive Predictor Exams
Related Questions
Correct Answer is ["A","B","E"]
Explanation
Age-related changes that lead to decreased secretion clearance include decreased functional cilia, decreased force of cough, and decreased functional immunoglobulin A (IgA). These physiological changes impair the respiratory system’s ability to remove mucus and trapped pathogens, increasing the risk of airway obstruction and infection in older adults.
Rationale for correct answers:
1. Decreased functional cilia. With aging, the number and activity of cilia decline, reducing mucociliary clearance. This makes it harder for mucus and debris to move upward and out of the airways, predisposing older adults to respiratory infections.
2. Decreased force of cough. Age-related weakening of respiratory muscles and reduced chest wall elasticity decrease cough strength, limiting the ability to clear secretions effectively. This contributes to mucus retention and airway compromise.
5. Decreased functional immunoglobulin A (IgA). IgA helps defend against pathogens on mucosal surfaces. A decline in IgA levels and effectiveness weakens immune protection, allowing microorganisms to proliferate in retained secretions.
Rationale for incorrect answers:
3. Decreased chest wall compliance. Although reduced compliance affects breathing mechanics and expansion, it does not directly influence the body’s ability to clear secretions.
4. Small airway closure earlier in expiration. This contributes to air trapping and reduced ventilation efficiency, but it does not directly cause decreased secretion clearance.
Take-home points:
- Aging decreases cilia activity, cough strength, and IgA function, impairing secretion clearance.
- Impaired clearance increases the risk of infection, mucus retention, and atelectasis.
- Encourage hydration, pulmonary hygiene, deep breathing, and coughing exercises to promote secretion removal.
- Preventive care such as vaccinations and respiratory monitoring helps reduce complications in older adults.
Correct Answer is D
Explanation
The nurse should interpret bronchial breath sounds in the lower lung fields as an abnormal finding. Normally, bronchial sounds are heard only over the trachea and mainstem bronchi. When these harsh, high-pitched sounds are heard in the peripheral lung areas, it indicates that lung tissue has become consolidated or filled with fluid, as seen in conditions such as pneumonia.
Rationale for correct answer:
4. Bronchial breath sounds in the lower lung fields. These sounds are characterized by a loud, tubular quality with a longer expiratory phase. In healthy lungs, the alveoli dampen bronchial sounds, so they should not be heard in the lower fields. Their presence there suggests abnormal air-to-fluid or air-to-solid ratios, typically caused by lung consolidation, atelectasis, or fibrosis. This finding warrants prompt investigation to identify the underlying pathology.
Rationale for incorrect answers:
1. Inspiratory chest expansion of 1 in. Normal chest expansion during inspiration is about 1 inch (2.5 cm) and should be symmetric. This finding is expected and indicates adequate lung inflation.
2. Percussion resonance over the lung bases. Resonance is the normal percussion tone over healthy lung tissue, reflecting air-filled alveoli. It indicates normal lung aeration and is not abnormal.
3. Symmetric chest expansion and contraction. Equal movement of both sides of the chest during breathing reflects normal respiratory mechanics and adequate bilateral lung expansion.
Take-home points:
- Bronchial breath sounds heard in peripheral or lower lung fields are a key sign of abnormal lung consolidation or fluid accumulation.
- Normal findings include resonant percussion tones and symmetric chest expansion.
- Recognizing changes in breath sound location or quality is essential for early detection of respiratory pathology.
- Document abnormal findings clearly and notify the provider for further evaluation, such as imaging or sputum testing.
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