The nurse recalls expecting absent voice sounds and hyper resonant percussion tones.
What are hyper resonant percussion tones?
- Low-pitched, hollow sounds called resonances can be heard over healthy lung tissue.
- Over dense organs like the heart or liver, dull or thudding sounds are frequently audible. When fluid or solid tissue replaces air-containing lung tissues, as is the case with pneumonia, pleural effusions, or tumors, dullness replaces hyper resonant percussion tones.
- When striking children's and very thin adults' chests, hyper resonant percussion tones can be heard that are louder and lower pitched than resonant sounds.
- When the lungs are hyperinflated with air, as they may be in COPD patients or anyone experiencing an acute asthmatic attack, hyper resonant percussion tones can also be heard.
- Pneumothorax may be indicated by a region of hyper resonant percussion tones on one side of the chest.
- Tympanic sounds are high, hollow noises that resemble drums.
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