Occupational exposure during nitric oxided inhalational therapy in a pediatric intensive care setting
| Autor: | J. W. Uiterwijk, J. Meulenbelt, T. Leenhoven, Dick G. Markhorst, A. J. van Vught |
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| Rok vydání: | 1996 |
| Předmět: |
inorganic chemicals
medicine.medical_specialty Time Factors medicine.medical_treatment Nitrogen Dioxide Air Pollutants Occupational Intensive Care Units Pediatric Nitric Oxide Critical Care and Intensive Care Medicine complex mixtures law.invention Nitric oxide Occupational medicine chemistry.chemical_compound law Occupational Exposure Anesthesiology Intensive care Administration Inhalation Humans Medicine Air Conditioning Nitrogen dioxide Intensive care medicine Netherlands Mechanical ventilation Inhalation business.industry respiratory system Intensive care unit Ventilation Personnel Hospital chemistry Maximum Allowable Concentration business Environmental Monitoring |
| Zdroj: | Intensive Care Medicine. 22:954-958 |
| ISSN: | 1432-1238 0342-4642 |
| DOI: | 10.1007/bf02044122 |
| Popis: | To determine the amount of occupational exposure to nitric oxide (NO) and nitrogen dioxide (NO2) during NO inhalational therapy.In a standard pediatric intensive care room, 800 ppm NO was delivered to a high-frequency oscillator and mixed with 100% O2 to obtain 20 ppm NO in the inspiratory gas flow. NO and NO2 concentrations in room air were measured using a chemiluminescence analyzer. Air samples were taken from a height of 150 cm at a horizontal distance of 65 cm from the ventilator in a nonventilated and in a well-ventilated room with and without an expiratory gas exhaust under normal intensive care environmental conditions.Pediatric intensive care unit in a university children's hospital.Maximal concentrations of NO and NO2 were reached after 4 h NO use. Without exhaust, in a nonventilated room, environmental NO and NO2 concentration rose to a maximum of 0.462 and 0.064 ppm, respectively. With the use of an expiratory gas exhaust, NO and NO2 concentrations were 0.176 and 0.042 ppm, respectively. With normal air-conditioning, these values were 0.075 and 0.034 ppm, respectively, without the use of an expiratory gas exhaust. With expiratory gas exhaust added to normal air-conditioning, values for NO and NO2 were 0.035 and 0.030 ppm, respectively.The use of 20 ppm NO, even under minimal room ventilation conditions, did not lead to room air levels of NO or NO2 that should be considered toxic to adjacent intensive care patients or staff. Slight increases in NO and NO2 concentrations were measurable but remained within occupational safety limits. The use of an exhaust system and normal room ventilation lowers NO and NO2 concentrations further to almost background levels. |
| Databáze: | OpenAIRE |
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