SOCI 3630 Lecture Notes - Lecture 51: Pleural Effusion, Atelectasis, Intercostal Space
4 Jun 2020
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Document Summary
Low pitched, clear, hollow sound, predominates in healthy lung tissue in the adult. May be modified somewhat in the athlete with heavy muscular chest wall and in heavily obese adult whom subcutaneous fat produces scattered dullness. May be higher on the right side. Hyperresonance lower pitched, booming sound- found when too much air is present , as in emphysema or pneumothorax. Dullness (soft, muffled thud) signals abnormal density in the lungs, as with pneumonia, pleural effusion, atelectasis, or tumor. Abnormally high level of dullness and absence of excursion. These occur with pleural effusion (fluid in the space between the visceral and parietal pleura) or atelectasis of the lower lobe. Lungs are hyper inflated with chronic emphysema; result in hyper resonance where you would expect cardiac dullness. Note the borders of cardiac dullness normally found on the anterior chest do not confuse these with suspected lung pathology.
