Exhaled Air Dispersion During Oxygen Delivery Via a Simple Oxygen Mask
نویسندگان
چکیده
منابع مشابه
Exhaled air dispersion during oxygen delivery via a simple oxygen mask.
BACKGROUND Pneumonia viruses such as influenza may potentially spread by airborne transmission. We studied the dispersion of exhaled air through a simple oxygen mask applied to a human patient simulator (HPS) during the delivery of different oxygen flow in a room free of air currents. METHODS The HPS represented a 70-kg adult male individual in a semi-sitting position on a hospital bed inclin...
متن کاملExhaled Air Dispersion during Coughing with and without Wearing a Surgical or N95 Mask
OBJECTIVES We compared the expelled air dispersion distances during coughing from a human patient simulator (HPS) lying at 45° with and without wearing a surgical mask or N95 mask in a negative pressure isolation room. METHODS Airflow was marked with intrapulmonary smoke. Coughing bouts were generated by short bursts of oxygen flow at 650, 320, and 220L/min to simulate normal, mild and poor c...
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BACKGROUND Noninvasive ventilation (NIV) via helmet or total facemask is an option for managing patients with respiratory infections in respiratory failure. However, the risk of nosocomial infection is unknown. METHODS We examined exhaled air dispersion during NIV using a human patient simulator reclined at 45° in a negative pressure room with 12 air changes/h by two different helmets via a v...
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There is much interest in the relationship between oxygen delivery and oxygen consumption in the critically ill patient. This interest is occasioned by the observation that patients with sepsis and the adult respiratory distress syndrome have a linear or "supply-dependent" relationship instead of the normally observed biphasic or "supply-independent" relationship. These relationships are only v...
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ژورنال
عنوان ژورنال: Chest
سال: 2007
ISSN: 0012-3692
DOI: 10.1378/chest.07-0636