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August 1, 1969CirculationOpen Access

Critical Assessment of Use of Central Venous Oxygen Saturation as a Mirror of Mixed Venous Oxygen in Severely Ill Cardiac Patients

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Why the study?

Does central venous or right atrial oxygen saturation accurately reflect mixed venous oxygen saturation in critically ill cardiac patients?

Population

24 critically ill cardiac patients, including those with heart failure or shock

Comparison

Measurement of central venous oxygen saturation… vs Simultaneous measurement of mixed venous oxygen…

Design

Cross-sectional

Authors

MSMelvin M. ScheinmanMBMurray A. BrownERElliot Rapaport

Discussion

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Overview

RAo2 may reliably surrogate MVo2 in cardiac ICU patients; extends prior correlations but leaves outcome impact open.

Structured PICO

Does central venous or right atrial oxygen saturation accurately reflect mixed venous oxygen saturation in critically ill cardiac patients?

P
Population
24 critically ill cardiac patients, including those with heart failure or shock
I
Intervention
Measurement of central venous oxygen saturation (CVo2) or right atrial oxygen saturation (RAo2)
C
Comparator
Simultaneous measurement of mixed venous oxygen saturation (MVo2) via right heart catheterization
O
Outcome
Difference and correlation between CVo2 or RAo2 and MVo2surrogate

In critically ill cardiac patients, right atrial oxygen saturation closely mirrors mixed venous oxygen saturation, whereas central venous oxygen saturation overestimates it, especially in shock or heart failure.

Cite This Study

Scheinman et al. (1969) studied this question.

synapsesocial.com/papers/6a1979110b4377da655806afhttps://doi.org/10.1161/01.cir.40.2.165
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