Bronchophony
Bronchophony , also called bronchial or bronchial voice, describes an examination of the lungs that can detect changes in the density of the lung tissue. Bronchophony consists in the transmission of higher-frequency tones whispered by the patient (usually the word "sixty-six") via the chest wall, which is recorded by auscultation . The method is based on the fact that higher frequencies or high-frequency vibrations are dampened by air or air-containing tissue are called low frequency vibrations. Low tones are examined using vocal fremitus , which is a palpatory procedure.
A weakened or absent bronchophony indicates air-filled rooms, e.g. B. in the context of a pneumothorax or pulmonary emphysema . When the lung tissue is compressed, such as pneumonia , the amplification of the sound is significantly increased. In atelectasis with threaded airway is found a weakened bronchophony. In contrast, minor atelectasis can also lead to increased bronchophonia.
literature
- Klaus Holldack, Klaus Gahl: Auscultation and percussion. Inspection and palpation. Thieme, Stuttgart 1955; 10th, revised edition ibid 1986, ISBN 3-13-352410-0 , pp. 81, 88, 91, 95 and 97 f.
Individual evidence
- ^ Roland Gädeke: Diagnostic and therapeutic techniques in paediatrics . 4th edition, Springer, Berlin 2013, ISBN 978-3-642-75347-3 , p. 68.
- ↑ a b Martina Kahl-Scholz: Basic diagnostics in internal medicine: percussion, auscultation, palpation . Springer, Berlin 2018, ISBN 978-3-662-56153-9 , p. 57.