Estimation of arterial PCO2 during high frequency jet ventilation. Studies in the dog.

Abstract:

:The arterial to end-tidal PCO2 difference (PaCO2-PE'CO2) was measured in five anaesthetized dogs during controlled ventilation at 0.25 Hz (15 b.p.m.) and during high frequency jet ventilation at 1, 3 and 5 Hz. Because of the slow response of the infra-red carbon dioxide analyser, satisfactory recordings of end-tidal carbon dioxide could not be obtained at frequencies greater than 1 Hz. The interruption of high frequency jet ventilation by conventional ventilation resulted in approximately equal arterial and end-tidal PCO2 values during the first breath, and restoration of the normal arterial to end-tidal PCO2 difference by the third breath. It is concluded that, when high frequency jet ventilation at 1, 3 or 5 Hz is interrupted with normal tidal volumes at low frequencies, the arterial PCO2 can be estimated from recordings of the end-tidal PCO2.

journal_name

Br J Anaesth

authors

Mortimer AJ,Cannon DP,Sykes MK

doi

10.1093/bja/59.2.240

subject

Has Abstract

pub_date

1987-02-01 00:00:00

pages

240-6

issue

2

eissn

0007-0912

issn

1471-6771

pii

S0007-0912(17)37723-1

journal_volume

59

pub_type

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