Nitrous oxide sedation in dentistry. A comparison between Rotameter settings, pharyngeal concentrations and blood levels of nitrous oxide.

Abstract:

:Nitrous oxide concentrations (V/V) at the delivery Rotameters block, nasal mask, pharynx and venous blood, were compared. There was a dilution of approximately 50% of the delivered nitrous oxide at the nasal mask which was further reduced in the pharynx. Venous blood concentrations 10 minutes after inhalation of nitrous oxide were low but as would be calculated from pharyngeal concentrations. After 5 minutes of oxygenation venous blood nitrous oxide concentrations were still relatively high. A total of 92% of subjects experienced a satisfactory effect with 30% nitrous oxide or less in the pharynx.

journal_name

Anaesthesia

journal_title

Anaesthesia

authors

Sher AM,Braude BM,Cleaton-Jones PE,Moyes DG,Mallett J

doi

10.1111/j.1365-2044.1984.tb07233.x

subject

Has Abstract

pub_date

1984-03-01 00:00:00

pages

236-9

issue

3

eissn

0003-2409

issn

1365-2044

journal_volume

39

pub_type

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