Exhaled air dispersion during bag-mask ventilation and sputum suctioning - Implications for infection control
| Autor: | Matthew T. V. Chan, David S.C. Hui, Thomas Lo, Susanna S.S. Ng, Benny K. Chow, Tony Gin, Fanny W.S. Ko |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Resuscitator
Adult Male Infectious Disease Transmission Patient-to-Professional medicine.medical_treatment Airflow lcsh:Medicine Lung injury Suction Article 03 medical and health sciences 0302 clinical medicine Medicine Humans 030212 general & internal medicine Respiratory system lcsh:Science Respiratory Tract Infections Smoke Multidisciplinary business.industry lcsh:R Tracheal intubation Masks Sputum Exhalation Respiration Artificial 030228 respiratory system Cough Anesthesia lcsh:Q Female medicine.symptom business |
| Zdroj: | Scientific Reports Scientific Reports, Vol 8, Iss 1, Pp 1-8 (2018) |
| ISSN: | 2045-2322 |
| Popis: | Mask ventilation and coughing during oro-tracheal suctioning produce aerosols that enhance nosocomial transmission of respiratory infections. We examined the extent of exhaled air dispersion from a human-patient-simulator during mask ventilation by different groups of healthcare workers and coughing bouts. The simulator was programmed to mimic varying severity of lung injury. Exhaled airflow was marked with tiny smoke particles, and highlighted by laser light-sheet. We determined the normalized exhaled air concentration in the leakage jet plume from the light scattered by smoke particles. Smoke concentration ≥20% was considered as significant exposure. Exhaled air leaked from mask-face interface in the transverse plane was most severe (267 ± 44 mm) with Ambu silicone resuscitator performed by nurses. Dispersion was however similar among anesthesiologists/intensivists, respiratory physicians and medical students using Ambu or Laerdal silicone resuscitator, p = 0.974. The largest dispersion was 860 ± 93 mm during normal coughing effort without tracheal intubation and decreased with worsening coughing efforts. Oro-tracheal suctioning reduced dispersion significantly, p |
| Databáze: | OpenAIRE |
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