While percussing a client's lung area the nurse notes a flat tone. This tone would indicate:
1. The nurse is percussing over a bone.
2. A normal finding.
3. The lungs are solidified.
4. Air is trapped in the lungs.
1
Rationale 1: Flat tones are high-pitched, soft tones of short duration and are the result of percussion over solid tissue such as muscle or bone.
Rationale 2: Percussion over normal lung tissue should elicit a loud, low-pitched, hollow tone of long duration known as resonance.
Rationale 3: Solidified areas of the lung will produce dullness on percussion, a high-pitched soft tone of short duration.
Rationale 4: Percussion over the lung where air has become trapped produces an abnormally loud, low tone of longer duration than resonance.
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