What does dullness to percussion mean?

What does dullness to percussion mean?

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 is tympany to percussion?

Tympany: A hollow drum-like sound that is produced when a gas-containing cavity is tapped sharply. Tympany is heard if the chest contains free air (pneumothorax) or the abdomen is distended with gas. Also known as tympanites.

What does Hyperresonance mean in lungs?

Medical Definition of hyperresonance : an exaggerated chest resonance heard in various abnormal pulmonary conditions.

Why do doctors ask patients to say 99?

Ask the patient to say the words: “ninety-nine” while you listen through the stethoscope. Normally the sound of “ninety-nine” will sound very faint and muffled. When you listen through normal lung tissue, sounds are normally muffled. This indicates consolidation, or that there is fluid in the lungs.

What is tympanitic?

: a distension of the abdomen caused by accumulation of gas in the intestinal tract or peritoneal cavity.

Should abdomen be dull or tympanic?

The anterior gas-filled abdomen normally has a tympanitic sound to percussion, which is replaced by dullness where solid viscera, fluid, or stool predominate. The flanks are duller as posterior solid structures predominate, and the right upper quadrant is somewhat duller over the liver.

What does Hyperresonance mean on percussion?

hy·per·res·o·nance (hī’pĕr-rez’ō-nans), 1. An extreme degree of resonance. 2. Resonance increased above the normal, and often of lower pitch, on percussion of an area of the body; occurs in the chest as a result of overinflation of the lung as in emphysema or pneumothorax and in the abdomen over distended bowel.

Why does pneumothorax cause Hyperresonance?

There will be hyper-resonance on the side of pneumothorax due to the presence of air in pleural space. Loss of cardiac or hepatic dullness can be noted if there is sufficient air to overlay these structures. Breath Sounds are dramatically decreased secondary to decreased ventilation on the side of pneumothorax.