期刊
ULTRASOUND IN MEDICINE AND BIOLOGY
卷 46, 期 10, 页码 2659-2666出版社
ELSEVIER SCIENCE INC
DOI: 10.1016/j.ultrasmedbio.2020.07.001
关键词
Fluid responsiveness; Carotid ultrasound; Carotid blood flow; Carotid-corrected flow time; Point-of-care ultrasound
资金
- Division of Pulmonary, Critical Care and Sleep Medicine at the Warren Alpert School of Medicine at Brown University [HL134625]
Measurement of carotid blood flow (CBF) and corrected carotid flow time (ccFT) has been proposed as a non-invasive means of determining fluid responsiveness. We evaluated the ability of CBF and ccFT as assessed by novice sonologists to determine fluid responsiveness in intensive care unit patients. Three novice phy-sician sonologists performed carotid ultrasounds before and after a fluid bolus and calculated changes in CBF and ccFT. Fluid responsiveness was defined as a >10% increase in cardiac index as measured using bioreactance. Of 112 participants, 56 (50%) were fluid responders. Changes in CBF and ccFT performed poorly at determining fluid responsiveness: 19 mL/min (area under the receiver operating characteristic curve: 0.58, 95% confidence interval: 0.47-0.68) and 6 ms (0.59, 0.46-0.65) respectively. Novice physician sonologists are unable to determine fluid responsiveness using CBF or ccFT. Further research is needed to identify the key limiting factors in using carotid ultrasound to determine fluid responsiveness. (C) 2020 World Federation for Ultrasound in Medicine & Biology. All rights reserved.
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