Atmospheric Concentrations of Nitrous Oxide in Ambulances during Entonox Administration
نویسندگان
چکیده
منابع مشابه
Nitrous oxide concentrations in the posterior nasopharynx during administration by nasal mask.
PURPOSE Nitrous oxide (N2O) administration with nasal mask produces variable outcomes in dental patients. This study describes a novel sampling method to measure actual inspired/expired N2O concentrations ([N2O]). METHODS Fifteen adult volunteers (32.5 +/- 8.5 years) underwent placement of a nasopharyngeal probe. With a nasal mask, 100% oxygen (O2) was administered for 2 minutes. N2O was intr...
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I report two patients undergoing open heart surgery, with nitrous oxide and isoflurane anaesthesia, for whom bispectral index (BIS) monitoring showed high BIS values with nitrous oxide and isoflurane anaesthesia. The BIS decreased immediately after nitrous oxide was stopped and increased again after nitrous oxide was restarted.
متن کاملNitrous oxide administration and hemodynamics.
EDITORIALS 211 inotropic agents (such as the catecholamines, calcium ions, and digitalis), and paired electrical stimulation. Entropy also increases during congestive heart failure, which may be thought of as an expression of a defect in the utilization of energy, a partial chemicomechanical uncoupling. The entropy of the myocardial cell tends to be reduced by negative inotropic agents, such as...
متن کاملAtmospheric Fate of Biologically Produced Nitrous Oxide
■ Abstract The anthropogenic production of greenhouse gases and their consequent effects on global climate have garnered international attention for years. A remaining challenge facing scientists is to unambiguously quantify both sources and sinks of targeted gases. Microbiological metabolism accounts for the largest source of nitrous oxide (N2O), mostly due to global conversion of land for agr...
متن کاملA comparison of Entonox and nitrous oxide for inhalation sedation in dentistry.
It has been shown that inhalation o f nitrons oxide/oxy gen mixtures in a concentration greater than 50 per cent may produce general anaesthesia. Inhalation sedation in dentistry, carried out by a single operator/sedationist, re quires that no loss o f consciousness must occur. It has been suggested, therefore, that the use of Entonox/oxygen mixtures which ensure that the inhaled nitrous oxid...
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ژورنال
عنوان ژورنال: Anaesthesia and Intensive Care
سال: 1989
ISSN: 0310-057X,1448-0271
DOI: 10.1177/0310057x8901700116