ArticleCritical care explorations2021
Carotid Doppler Measurement Variability in Functional Hemodynamic Monitoring: An Analysis of 17,822 Cardiac Cycles.
Article in Critical care explorations, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 14 papers.
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Who cites it
14 citing papers in PubMed.
- Estimating Blood Volume Loss With Wireless, Wearable Ultrasound: A Pilot Investigation.Military medicine · 2026Article
- Observational
- Correlation between carotid Doppler ultrasound-derived parameters and cardiac output measurements: a systematic review and meta-analysis.Quantitative imaging in medicine and surgery · 2025Article
- Optimising flow without congestion using the venous-arterial Doppler enhanced resuscitation framework.Australasian journal of ultrasound in medicine · 2024Article
- Simultaneous Venous-Arterial Doppler Ultrasound During Early Fluid Resuscitation to Characterize a Novel Doppler Starling Curve: A Prospective Observational Pilot Study.Journal of intensive care medicine · 2024Observational
- The correlation between carotid artery Doppler and stroke volume during central blood volume loss and resuscitation.Acute and critical care · 2024Article
- Simultaneous venous-arterial Doppler during preload augmentation: illustrating the Doppler Starling curve.The ultrasound journal · 2023Article
- Detecting the Change in Total Circulatory Flow with a Wireless, Wearable Doppler Ultrasound Patch: A Pilot Study.Critical care explorations · 2023Article
- The effect of gravity-induced preload change on the venous excess ultrasound (VExUS) score and internal jugular vein Doppler in healthy volunteers.Intensive care medicine experimental · 2023Article
- The time cost of physiologically ineffective intravenous fluids in the emergency department: an observational pilot study employing wearable Doppler ultrasound.Journal of intensive care · 2023Article
- Is the Carotid Artery a Window to the Left Ventricle?Indian journal of critical care medicine : peer-reviewed, official publication of Indian Society of Critical Care Medicine · 2022Article
- Carotid artery velocity time integral and corrected flow time measured by a wearable Doppler ultrasound detect stroke volume rise from simulated hemorrhage to transfusion.BMC research notes · 2022Article
- A Wireless Wearable Doppler Ultrasound Detects Changing Stroke Volume: Proof-of-Principle Comparison with Trans-Esophageal Echocardiography during Coronary Bypass Surgery.Bioengineering (Basel, Switzerland) · 2021Article
- The Correlation between Carotid Artery Corrected Flow Time and Velocity Time Integral during Central Blood Volume Loss and Resuscitation.Journal of medical ultrasoundArticle
Corrections and comments
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Authors and funding
9 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Carotid Doppler ultrasound is used as a measure of fluid responsiveness, however, assessing change with statistical confidence requires an adequate beat sample size. The coefficient of variation helps quantify the number of cardiac cycles needed to adequately detect change during functional hemodynamic monitoring.
designProspective, observational, human model of hemorrhage and resuscitation.
settingHuman physiology laboratory at Mayo Clinic. SUBJECTS: Healthy volunteers.
interventionsLower body negative pressure. MEASUREMENTS AND MAIN
resultsWe measured the coefficient of variation of the carotid artery velocity time integral and corrected flow time during significant cardiac preload changes. Seventeen-thousand eight-hundred twenty-two cardiac cycles were analyzed. The median coefficient of variation of the carotid velocity time integral was 8.7% at baseline and 11.9% during lowest-tolerated lower body negative pressure stage. These values were 3.6% and 4.6%, respectively, for the corrected flow time.
conclusionsThe median coefficient of variation values measured in this large dataset indicates that at least 6 cardiac cycles should be averaged before and after an intervention when using the carotid artery as a functional hemodynamic measure.
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