During a skin assessment, the nurse notes a blue discoloration of the client's lips and nail beds. How should the nurse interpret this finding?

Rationale:

A. Asking the client to cough every 4 hours is insufficient in response to hypoxemia. Frequent coughing may help clear secretions, but it does not directly improve oxygen saturation and waiting several hours between coughs may delay intervention.

B. Requesting a prescription for an opioid analgesic is not appropriate because opioids can depress respiratory drive, which may worsen hypoxemia. Administering an opioid without respiratory assessment could be dangerous for a client with low oxygen saturation.

C. Encouraging the client to take deep breaths is correct. Deep breathing exercises, including techniques such as incentive spirometry, help expand the lungs, improve alveolar ventilation, and increase oxygenation. This intervention is noninvasive, safe, and directly addresses the low oxygen saturation.

D. Decreasing the head of the bed is incorrect. A supine or flat position can reduce lung expansion and worsen oxygenation. Elevating the head of the bed, or having the client sit upright, promotes better lung expansion and improves oxygen saturation.

Rationale:

A. This order is incorrect because it does not follow the standard sequence for auscultating the heart. While all the key auscultation points are listed, the sequence matters for systematic assessment to avoid missing sounds and to follow anatomical flow.

B. This order is also incorrect. Pulmonic comes before aortic in this list, which is partially correct, but mitral should be auscultated last. Also, tricuspid is usually assessed before mitral to follow the right-to-left, top-to-bottom approach.

C. This is incorrect because Erb's Point is not typically the first site in a standard exam. Auscultation usually starts from the aortic area, moving systematically through the valves.

D. This follows the standard anatomical sequence used in clinical practice:

1. Aortic valve – 2nd intercostal space, right sternal border.
2. Pulmonic valve – 2nd intercostal space, left sternal border.
3. Erb’s point – 3rd intercostal space, left sternal border; often used to listen to S2 splitting and murmurs.
4. Tricuspid valve – 4th or 5th intercostal space, left lower sternal border.
5. Mitral valve (apical) – 5th intercostal space, midclavicular line; best place to hear S1 and mitral murmurs.

This order allows for a systematic assessment, starting from the base of the heart (aortic and pulmonic valves) down to the apex (mitral valve), and ensures that all major heart sounds and murmurs are evaluated efficiently.