Research utility of noninvasive methods for measurement of cardiac output
Why the study?
Do noninvasive methods (pulsed Doppler echocardiography and CO2 rebreathing) accurately measure cardiac index compared to dye dilution in normal volunteers?
Population
8 normal volunteers
Comparison
Pulsed Doppler echocardiography and CO2… vs Dye dilution (QDD)
Design
Other
Authors
Discussion
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Member takes
Implication
Doppler may aid precise research measurements of cardiac index changes; leaves open validation and utility in patients.
Structured PICO
Do noninvasive methods (pulsed Doppler echocardiography and CO2 rebreathing) accurately measure cardiac index compared to dye dilution in normal volunteers?
P
Population
8 normal volunteers
I
Intervention
Pulsed Doppler echocardiography (QDop) and CO2 rebreathing (QCO2)
C
Comparator
Dye dilution (QDD)
O
Outcome
Cardiac index (Q) determinationsurrogate
Doppler echocardiography is a highly accurate noninvasive method for estimating cardiac index and quantitating acute changes compared to dye dilution.
Cite This Study
Hinderliter et al. (1987) studied this question.