Abstract:
:Measurements of atmospheric nitrous oxide concentrations were made in eight hospitals, using 30 anaesthetic machines and locations, during 41 anaesthetic administrations or simulations. All areas were air conditioned, two by laminar flow devices. All anaesthetic machines and ventilators were fitted with commercially available gas collector (scavenger) valves. In all areas except one, venturi suction was used to exhaust gases. Pollution levels during endotracheal anaesthesia did not exceed the recommended 30 ppm. except where leaking anaesthetic machines or nitrous oxide supplies were used. In two instances where paediatric anaesthesia was administered through uncuffed endotracheal tubes nitrous oxide levels were also excessive. Of nine anaesthetics administered through face masks, only in one was the ambient nitrous oxide concentration acceptable. During induction of anaesthesia using nitrous oxide, unacceptable peaks of concentration were encountered. In two air conditioned recovery rooms tested, nitrous oxide concentration was acceptable. The collector valves performed their function satisfactorily, but laminar flow air conditioning was insufficient in itself to maintain acceptably low nitrous oxide concentration without the use of scavenging.
journal_name
Anaesth Intensive Carejournal_title
Anaesthesia and intensive careauthors
Torda TA,Jones R,Englert Jdoi
10.1177/0310057X7800600307subject
Has Abstractpub_date
1978-08-01 00:00:00pages
215-21issue
3eissn
0310-057Xissn
1448-0271journal_volume
6pub_type
杂志文章abstract::It is common practice to mix opioids with hyperbaric bupivacaine in a single syringe before intrathecal injection of the mixture. Mixing these drugs may alter the density of the hyperbaric solution, affecting the spread of local anaesthetic and opioid. Forty-eight women having elective caesarean section under spinal a...
journal_title:Anaesthesia and intensive care
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abstract::Administration of suxamethonium to patients with critical illness polyneuropathy may produce life-threatening hyperkalaemia. A questionnaire to assess the awareness of this problem was sent to all UK intensive care units. A clinical scenario suggestive of critical illness polyneuropathy was accompanied by a list of po...
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journal_title:Anaesthesia and intensive care
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journal_title:Anaesthesia and intensive care
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