CJA
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
This Article
Right arrow Full Text (PDF)
Right arrow Submit a scholarly reply
Right arrow Alert me when this article is cited
Right arrow Alert me when eLetters are posted
Right arrow Alert me if a correction is posted
Services
Right arrow Similar articles in this journal
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Wahba, R. W.
Right arrow Articles by Kleiman, S. J.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Wahba, R. W.
Right arrow Articles by Kleiman, S. J.

Canadian Journal of Anesthesia, Vol 43, 243-245, Copyright © 1996 by Canadian Anesthesiologists' Society

ARTICLES

Changes in PCO2 with acute changes in cardiac index

RW Wahba, MJ Tessler, F Beique and SJ Kleiman
Department of Anaesthesia, SMBD-Jewish General Hospital, Montreal.

PURPOSE: A direct relationship between cardiac index (CI) and end-tidal PCO2 (PETCO2) shortly after decreased CI was reported, but arterial PCO2 was not measured. Our purpose was to supply the missing information on the immediate effects of alterations in CI on PaCO2, PETCO2 and thus on Pa-PETCO2. METHODS: We measured CI, Pa and PETCO2 and calculated the difference in 20 patients scheduled for elective heart surgery just before and immediately after the sternotomy. The measurements were made using standard methods: thermodilution for CI, infra-red and blood gas analysis for PET and PaCO2 respectively. The results were analyzed by linear regression. RESULTS: Very significant, direct and immediate changes in PET and PaCO2 with changes in CI were noted. The ratios were 3.8 and 4.2 mmHg L-1 respectively. The calculated values of r were 0.75 (P < 0.001) for PETCO2 and 0.64 (P < 0.005) for PaCO2. The magnitude of individual change in PCO2 varied considerably such that the alterations in Pa-PETCO2 were also variable, without any correlation with the direction or magnitude of change in CI. CONCLUSION: Our results explain the reported wide variations in Pa-PETCO2 that accompany perturbations of cardiac output. Our observations pertain to the unsteady state only. The results suggest that PETCO2 can be used to estimate changes in CI with a reasonable degree of confidence.


This article has been cited by other articles:


Home page
 Emerg. Med. J.Home page
D. Kupnik and P. Skok
Capnometry in the prehospital setting: are we using its potential?
Emerg. Med. J., September 1, 2007; 24(9): 614 - 617.
[Abstract] [Full Text] [PDF]

Home page
 Canadian J. AnesthesiaHome page
J. Hudcova and R. Schumann
Arterial to end-tidal CO2 gradient reversal during laparoscopic pheochromocytoma resection: [Le renversement du gradient du CO2 arteriel/tele-expiratoire pendant la resection laparoscopique d'un pheochromocytome]
Can J Anesth, April 1, 2006; 53(4): 409 - 412.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH TABLE OF CONTENTS
Copyright © 1996 by the Canadian Anesthesiologists' Society.