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10.1097/SHK.0000000000001655

http://scihub22266oqcxt.onion/10.1097/SHK.0000000000001655
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32925598!ä!32925598

suck abstract from ncbi


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pmid32925598      Shock 2021 ; 55 (4): 472-478
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  • Aerosol Exposure During Surgical Tracheotomy in SARS-CoV-2 Positive Patients #MMPMID32925598
  • Loth AG; Guderian DB; Haake B; Zacharowski K; Stover T; Leinung M
  • Shock 2021[Apr]; 55 (4): 472-478 PMID32925598show ga
  • INTRODUCTION: Since December 2019, the novel coronavirus SARS-CoV-2 has been spreading worldwide. Since the main route of infection with SARS-CoV-2 is probably via contact with virus-containing droplets of the exhaled air, any method of securing the airway is of extremely high risk for the health care professionals involved. We evaluated the aerosol exposure to the interventional team during a tracheotomy in a semiquantitative fashion. In addition, we present novel protective measures. PATIENTS AND METHODS: To visualize the air movements occurring during a tracheotomy, we used a breathing simulator filled with artificial fog. Normal breathing and coughing were simulated under surgery. The speed of aerosol propagation and particle density in the direct visual field of the surgeon were evaluated. RESULTS: Laminar air flow (LAF) in the OR reduced significantly the aerosol exposure during tracheostomy. Only 4.8 +/- 3.4% of the aerosol was in contact with the surgeon. Without LAF, however, the aerosol density in the inspiratory area of the surgeon is 10 times higher (47.9 +/- 10.8%, P < 0.01). Coughing through the opened trachea exposed the surgeon within 400 ms with 76.0 +/- 8.0% of the aerosol-independent of the function of the LAF. Only when a blocked tube was inserted into the airway, no aerosol leakage could be detected. DISCUSSION: Coughing and expiration during a surgical tracheotomy expose the surgical team considerably to airway aerosols. This is potentially associated with an increased risk for employees being infected by airborne-transmitted pathogens. Laminar airflow in an operating room leads to a significant reduction in the aerosol exposure of the surgeon and is therefore preferable to a bedside tracheotomy in terms of infection prevention. Ideal protection of medical staff is achieved when the procedure is performed under endotracheal intubation and muscle relaxation.
  • |*Aerosols[MESH]
  • |*Occupational Exposure[MESH]
  • |*Surgeons[MESH]
  • |*Tracheotomy[MESH]
  • |COVID-19/*transmission[MESH]
  • |Cough/complications[MESH]
  • |Environment, Controlled[MESH]
  • |Humans[MESH]
  • |Occupational Diseases/*etiology[MESH]
  • |Operating Rooms[MESH]
  • |Patient Simulation[MESH]
  • |Point-of-Care Systems[MESH]
  • |Respiration[MESH]
  • |Risk[MESH]
  • |Virion[MESH]


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