Squawk (sound)

Squawks or short wheezes are brief "squeaky" sounds that are also referred to as squeaks. Their waveforms show a sinusoidal pattern with a duration 10 to 100 ms and a frequency between 200 and 800 Hz. Many birds have made sounds which are onomatopoeically described as "squawk". Squawks have been described in bird fancier's disease and other forms of hypersensitivity pneumonitis.^[1] They are also heard in a variety of conditions in which alveolitis is present. In one study they were found in 10% of patients with pneumonia.^[2]

References

↑ Earis JE, Marsh K, Pearson, MG. The inspiratory “squawk” in extrinsic allergic alveolitis and other pulmonary fibroses. Thorax 1979;37:923–926.
↑ Paciej R, Vyshedskiy A, Bana D, Murphy R, Squawks in pneumonia, Thorax 2004;59:177–179

Symptoms and signs relating to the respiratory system (R04–R07, 786)

Medical examination and history taking

Auscultation

Stethoscope
Respiratory sounds
- Stridor
- Wheeze
- Crackles
- Rhonchi
- Stertor
- Squawk
- Pleural friction rub
- Fremitus
- Bronchophony
- Terminal secretions
Elicited findings

Breathing

Rate	Apnea Prematurity Dyspnea Hyperventilation Hypoventilation Hyperpnea Tachypnea Hypopnea Bradypnea

Pattern	Agonal respiration Biot's respiration Cheyne–Stokes respiration Kussmaul breathing Ataxic respiration

Other	Respiratory distress Respiratory arrest Orthopnea/Platypnea Trepopnea Aerophagia Asphyxia Breath holding Mouth breathing Snoring

Other

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