Related Experiment Videos
Doppler-derived mean aortic flow velocity in children: an alternative to cardiac index
M D Seear1, L D'Orsogna, G G Sandor
1Department of Paediatrics, University of British Columbia, British Columbia's Children's Hospital, Vancouver, Canada.
Insights
Mean aortic velocity remains constant in children across various ages. This finding suggests that mean aortic flow velocity, measured by Doppler, could serve as an alternative method for assessing cardiac output in pediatric patients.
Area of Science:
- Pediatric Cardiology
- Cardiovascular Physiology
- Diagnostic Ultrasound
Background:
- Assessing cardiac output in children is crucial for monitoring cardiovascular health.
- Traditional methods for cardiac output assessment can be invasive or complex.
- Establishing non-invasive, reliable markers for cardiac function in pediatrics is essential.
Purpose of the Study:
- To investigate the constancy of mean aortic velocity in a pediatric population.
- To determine if mean aortic velocity can be a reliable indicator of cardiac function in children.
- To explore the potential of Doppler-derived mean aortic velocity as an alternative to standard cardiac output measurements.
Main Methods:
- Prospective study involving 88 healthy children aged 1 month to 15 years.
- Ascending aortic flow velocities were measured using pulse Doppler echocardiography.
- Mean aortic velocities were calculated from the obtained flow velocity data.
Main Results:
- Mean aortic flow velocity demonstrated relative constancy across all studied age groups.
- The calculated mean aortic velocity was 28.4 +/- 4.8 cm/s.
- Doppler measurement of mean aortic velocity is technically feasible and straightforward in children.
Conclusions:
- Mean aortic velocity is a stable hemodynamic parameter in children.
- Doppler-derived mean aortic flow velocity presents a promising, non-invasive alternative for cardiac output assessment in pediatric patients.
- This finding may simplify the evaluation of cardiac function in young individuals.
Abstract:
This study tested the hypothesis that mean aortic velocity is relatively constant in children. Eighty-eight normal children (aged 1 month to 15 years) were studied prospectively. Ascending aortic flow velocities were obtained by pulse Doppler and mean aortic velocities calculated. Mean aortic flow velocity was relatively constant for all ages at 28.4 +/- 4.8 cm/s. As Doppler is easy to perform, mean aortic flow velocity may be an alternative approach to the assessment of cardiac output.