January 1, 1980Catheterization and Cardiovascular Diagnosis
Evaluation of a new catheter‐mounted electromagnetic velocity sensor during cardiac catheterization
Key result
A new electromagnetic catheter-tip velocity transducer measured cardiac output that correlated highly with dye dilution (r=0.93), offering a safe and reliable technique for obtaining hemodynamics.
Why the study?
Does an electromagnetic catheter-tip velocity transducer accurately measure cardiac output compared to dye dilution in patients undergoing cardiac catheterization?
Population
37 patients undergoing cardiac catheterization
Comparison
Electromagnetic catheter-tip velocity transducer… vs Dye dilution method for cardiac output…
Design
Cross-sectional
Authors
Discussion
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Member takes
Implication
Supports electromagnetic transducers for hemodynamics in catheterization; leaves open prospective validation before clinical adoption.
Study Design
Type
Observational (n=37)
Structured PICO
Does an electromagnetic catheter-tip velocity transducer accurately measure cardiac output compared to dye dilution in patients undergoing cardiac catheterization?
P
Population
37 patients undergoing cardiac catheterization
I
Intervention
Electromagnetic catheter-tip velocity transducer for measuring pulsatile blood flow in the main pulmonary artery or ascending aorta
C
Comparator
Dye dilution method for cardiac output determination
O
Outcome
Correlation of cardiac output calculated from the electromagnetic flowmeter versus dye dilutionsurrogate
Main Result
Effect estimate: r = 0.93
The multisensor electromagnetic catheter provides a safe and reliable method for measuring high-fidelity blood flow and pressure waveforms in conscious patients.
Cite This Study
Nichols et al. (1980) conducted an observational in Patients undergoing cardiac catheterization (n=37). Electromagnetic catheter-tip velocity transducer vs. Dye dilution was evaluated on Cardiac output (r = 0.93). A new electromagnetic catheter-tip velocity transducer measured cardiac output that correlated highly with dye dilution (r=0.93), offering a safe and reliable technique for obtaining hemodynamics.