Related Experiment Video
Updated: Feb 19, 2026
Functional Transcranial Doppler Ultrasound for Monitoring Cerebral Blood Flow
Published on: March 15, 2021
Carotid Flow Time Test Performance for the Detection of Dehydration in Children With Diarrhea
David C Mackenzie1,2, Sabiha Nasrin3, Bita Atika3
1Maine Medical Center, Portland, Maine, USA.
Insights
The corrected carotid artery flow time poorly predicts severe dehydration in children with diarrhea. This ultrasound measurement is not a reliable indicator for assessing dehydration severity in pediatric patients.
Area of Science:
- Pediatric Emergency Medicine
- Diagnostic Ultrasound
- Global Health
Background:
- Clinical dehydration assessment in children is often inaccurate.
- Point-of-care ultrasound (POCUS) offers noninvasive volume status evaluation.
- Corrected carotid artery flow time (CCFT) predicts volume depletion in adults.
Purpose of the Study:
- To evaluate CCFT's accuracy in identifying dehydration in children with acute diarrhea.
- To assess CCFT as a diagnostic tool for severe dehydration in pediatric patients in Bangladesh.
Main Methods:
- Recruited 350 children (0-60 months) with acute diarrhea.
- Measured CCFT at presentation; categorized dehydration by weight change post-rehydration.
- Used ROC curves and linear regression to analyze CCFT's predictive performance.
Main Results:
- Mean CCFT was 326 ms (IQR, 295-351 ms).
- Area under the ROC curve for severe dehydration detection was 0.51 (95% CI, 0.42-0.61).
- Linear regression revealed a weak association between CCFT and dehydration percentage.
Conclusions:
- CCFT demonstrated poor predictive ability for severe dehydration in children with diarrhea.
- This ultrasound parameter is not a reliable biomarker for dehydration in this pediatric population.
Objectives:
Unstructured clinical assessments of dehydration in children are inaccurate. Point-of-care ultrasound is a noninvasive diagnostic tool that can help evaluate the volume status; the corrected carotid artery flow time has been shown to predict volume depletion in adults. We sought to determine the ability of the corrected carotid artery flow time to identify dehydration in a population of children presenting with acute diarrhea in Dhaka, Bangladesh.
Methods:
Children presenting with acute diarrhea were recruited and rehydrated according to hospital protocols. The corrected carotid artery flow time was measured at the time of presentation. The percentage of weight change with rehydration was used to categorize each child's dehydration as severe (>9%), some (3%-9%), or none (<3%). A receiver operating characteristic curve was constructed to test the performance of the corrected carotid artery flow time for detecting severe dehydration. Linear regression was used to model the relationship between the corrected carotid artery flow time and percentage of dehydration.
Results:
A total of 350 children (0-60 months) were enrolled. The mean corrected carotid artery flow time was 326 milliseconds (interquartile range, 295-351 milliseconds). The area under the receiver operating characteristic curve for the detection of severe dehydration was 0.51 (95% confidence interval, 0.42, 0.61). Linear regression modeling showed a weak association between the flow time and dehydration.
Conclusions:
The corrected carotid artery flow time was a poor predictor of severe dehydration in this population of children with diarrhea.
More Related Videos
09:33A Methodological Approach to Non-invasive Assessments of Vascular Function and Morphology
Published on: February 7, 2015
05:56Implementation of Non-invasive Point of Care Transient Elastography for Evaluation of Liver Disease in Pediatric Populations with Cystic Fibrosis
Published on: August 29, 2025
