Effect of positive end-expiratory pressure on acoustic wave propagation in experimental porcine lung injury
| Autor: | Jukka Räsänen, Michael E. Nemergut, Noam Gavriely |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Sound Spectrography
Swine Physiology Sound transmission class Sensitivity and Specificity Pulmonary oedema Positive-Pressure Respiration Physiology (medical) Animals Scattering Radiation Medicine Respiratory sounds Respiratory system Positive end-expiratory pressure medicine.diagnostic_test business.industry Reproducibility of Results Lung Injury General Medicine respiratory system respiratory tract diseases Pulmonary Alveoli Compliance (physiology) Sound Concomitant Anesthesia business Airway |
| Zdroj: | Clinical Physiology and Functional Imaging. 35:134-141 |
| ISSN: | 1475-0961 |
| Popis: | Summary To evaluate the effect of positive end-expiratory pressure (PEEP) on sound propagation through injured lungs, we injected a multifrequency broad-band sound signal into the airway of eight anesthetized, intubated and mechanically ventilated pigs, while recording transmitted sound at three locations bilaterally on the chest wall. Oleic acid injections effected a severe pulmonary oedema predominately in the dependent lung regions, with an average increase in venous admixture from 19 ± 15 to 59 ± 14% (P |
| Databáze: | OpenAIRE |
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