decreased sounds

What Causes Dullness To Percussion?

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What Causes Dullness To Percussion? Dullness replaces resonance when fluid or solid tissue replaces air-containing lung tissues, such as occurs with pneumonia, pleural effusions, or tumors. Hyperresonant sounds that are louder and lower pitched than resonant sounds are normally heard when percussing the chests of children and very thin adults. What causes muffled lung sounds?

What Causes Hyperresonance?

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What Causes Hyperresonance? Hyperresonant sounds may also be heard when percussing lungs hyperinflated with air, such as may occur in patients with COPD, or patients having an acute asthmatic attack. An area of hyperresonance on one side of the chest may indicate a pneumothorax. Tympanic sounds are hollow, high, drumlike sounds. What does Hyperresonance mean