A pediatric patient has been diagnosed with right lower lobe pneumonia. Upon auscultation of this lung field, the nurse would expect to hear which breath sound?

1. A

   Rhonchi

2. B

   Stridor

3. C

   Crackles

4. D

   Wheezes

Appeared in: GMCH Chandigarh - 2019

Explanation

• Pneumonia is an infection that leads to the accumulation of fluid and inflammatory exudate within the alveoli.
• Crackles are short, discrete, popping sounds produced when air is forced through respiratory passages narrowed by fluid, or when collapsed alveoli suddenly snap open.
• These sounds are characteristic of conditions affecting the lung parenchyma, such as pneumonia, and are typically heard over the affected lung field—in this case, the right lower lobe.
• Fine crackles are often heard at the end of inspiration and are not typically cleared by coughing.

Why Other Options Were Wrong

• Option A: Rhonchi are low-pitched, continuous, snoring-like sounds. They are produced by secretions in the larger airways (bronchi), not the alveoli where pneumonia is located.
• Option B: Stridor is a high-pitched, harsh sound heard on inspiration, caused by an obstruction in the upper airway (e.g., larynx or trachea). Pneumonia is a lower airway disease.
• Option D: Wheezes are high-pitched, continuous musical sounds caused by the narrowing of smaller airways (bronchioles), typically due to bronchospasm. While wheezing can co-exist, the primary sound from alveolar fluid is crackles.

Related Visual

Clinical Relevance

• Nursing practice connection: Use the key finding related to Auscultation findings in pneumonia to guide bedside assessment, documentation, and the next nursing action.
• Accurate auscultation and identification of breath sounds are critical for diagnosing respiratory conditions, monitoring disease progression, and evaluating the effectiveness of treatments.
• In a pediatric patient with pneumonia, noting the presence, location, and character of crackles helps confirm the diagnosis and provides a baseline for assessing response to antibiotics.
• A change in breath sounds, such as the clearing of crackles, is a key indicator of clinical improvement.

How to Approach the Question

• First, identify the key diagnosis provided in the question: 'right lower lobe pneumonia'.
• Next, recall the core pathophysiology of pneumonia. This condition involves inflammation and the filling of alveoli (small air sacs) with fluid or pus.
• Think about the sound that would be produced when air moves through these fluid-filled sacs during breathing. This process creates discontinuous popping or bubbling noises.
• Match this sound description to the correct medical term from the options. The term for these sounds is 'crackles' (also known as rales).
• Finally, systematically rule out the other options by recalling their origins: Rhonchi originate from secretions in larger airways, Stridor from upper airway obstruction, and Wheezes from narrowed airways (bronchospasm).

Concept Tested & Keywords

• Concept Tested: Auscultation findings in pneumonia
• Stem keywords: pediatric patient, right lower lobe pneumonia, auscultation, breath sound
• Lead-in keywords: which breath sound
• Clinical cues: Diagnosis of right lower lobe pneumonia is the key clinical cue, pointing to a pathology in the alveoli.
• Negative lead-in flag: false

Question ID

Qx8Ys1mbUuO588c7GtJ--C

Copy ID

Reference Book

E6 Medicine Harrison 22e Part 2 p. 104-106

E6 Nursing Fundamentals Potter Perry 12e Part 3 p. 95-97