The vocal fremitus is a palpatory examination method in which the examiner places both hands on the patient's chest at the level of the 8th - 10th rib between the posterior axillary line and the scapular line, while the patient repeats the number 99 several times in a deep voice (corresponding to the natural frequency of the thorax). This results in oscillations of the thoracic wall, which is diagnostically directional by side comparison.
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DefinitionThis section has been translated automatically.
General informationThis section has been translated automatically.
Source of error: Women and children sometimes have a too high pitch, which is why the natural frequency of the thorax cannot be made to vibrate.
ManifestationThis section has been translated automatically.
Air-containing alveoli reduce low frequencies at:
- Pleural effusion (until cancelled)
- Pneumothorax (until cancelled)
- Emphysema
- Atelectasis
- Pleural rind (reinforcement is also possible for very thick pleural rind)
- Tumor (if applicable)
The vocal fremitus is aggravated by compressed lung tissue such as in:
- pneumonia
- Fibrosis (possibly)
- Pulmonary edema (possibly)
Note(s)This section has been translated automatically.
Error source:
Women and children sometimes have a too high voice pitch, which is why the natural frequency of the thorax cannot be made to vibrate.
LiteratureThis section has been translated automatically.
- Herold G et al (2018) Internal Medicine S 376
- Anschütz F (1978) The physical examination S 87-89