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Can Transcutaneous CO2 Tension Be Used to Calculate Ventilatory Dead Space? A Pilot Study
Joint Authors
Lakshminarayana, Pradeep H.
Geeti, Adiba A.
Darr, Umer M.
Kaufman, David A.
Source
Critical Care Research and Practice
Issue
Vol. 2016, Issue 2016 (31 Dec. 2016), pp.1-4, 4 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2016-09-05
Country of Publication
Egypt
No. of Pages
4
Main Subjects
Abstract EN
Dead space fraction ( V d / V t ) measurement performed using volumetric capnography requires arterial blood gas (ABG) sampling to estimate the partial pressure of carbon dioxide ( P a C O 2 ).
In recent years, transcutaneous capnography ( P t c C O 2 ) has emerged as a noninvasive method of estimating P a C O 2 .
We hypothesized that P t c CO2 can be used as a substitute for P a C O 2 in the calculation of V d / V t .
In this prospective pilot comparison study, 30 consecutive postcardiac surgery mechanically ventilated patients had V d / V t calculated separately using volumetric capnography by substituting P t c CO2 for P a C O 2 .
The mean V d / V t calculated using P a C O 2 and P t c CO2 was 0.48 ± 0.09 and 0.53 ± 0.08, respectively, with a strong positive correlation between the two methods of calculation (Pearson’s correlation = 0.87, p < 0.05 ).
Bland-Altman analysis showed a mean difference of −0.05 (95% CI: −0.01 to −0.09) between the two methods.
P t c CO2 measurements can provide a noninvasive means to measure V d / V t , thus accessing important physiologic information and prognostic assessment in patients receiving mechanical ventilation.
American Psychological Association (APA)
Lakshminarayana, Pradeep H.& Geeti, Adiba A.& Darr, Umer M.& Kaufman, David A.. 2016. Can Transcutaneous CO2 Tension Be Used to Calculate Ventilatory Dead Space? A Pilot Study. Critical Care Research and Practice،Vol. 2016, no. 2016, pp.1-4.
https://search.emarefa.net/detail/BIM-1099556
Modern Language Association (MLA)
Lakshminarayana, Pradeep H.…[et al.]. Can Transcutaneous CO2 Tension Be Used to Calculate Ventilatory Dead Space? A Pilot Study. Critical Care Research and Practice No. 2016 (2016), pp.1-4.
https://search.emarefa.net/detail/BIM-1099556
American Medical Association (AMA)
Lakshminarayana, Pradeep H.& Geeti, Adiba A.& Darr, Umer M.& Kaufman, David A.. Can Transcutaneous CO2 Tension Be Used to Calculate Ventilatory Dead Space? A Pilot Study. Critical Care Research and Practice. 2016. Vol. 2016, no. 2016, pp.1-4.
https://search.emarefa.net/detail/BIM-1099556
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1099556