The diagnostic utility of sonographic carotid flow time in determining volume responsiveness

Shokoohi, Hamid; Berry, Grant; Shahkolahi, Murteza; King, Jackson; King, Jordan B.; Salimian, Mohammad; Poshtmashad, Ameneh; Pourmand, Ali

doi:10.1016/j.jcrc.2016.10.025

Cited by 27 publications

(33 citation statements)

References 8 publications

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“…Prior studies have shown that the corrected carotid artery flow time can be used to predict dehydration and fluid responsiveness in adult populations . In this study of children with diarrhea in a low‐resource setting, it did not accurately predict dehydration.…”

Section: Discussioncontrasting

confidence: 58%

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Carotid Flow Time Test Performance for the Detection of Dehydration in Children With Diarrhea

MacKenzie

Nasrin

Atika

et al. 2017

J of Ultrasound Medicine

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Section: Discussioncontrasting

confidence: 58%

“…Ultrasound measurement of the carotid flow time corrected for heart rate has been identified as a potentially useful tool for identifying dehydration in adult patients with hypovolemia . Images of the carotid artery are relatively easy to obtain, in contrast to echocardiographic variables, to evaluate the volume status .…”

mentioning

confidence: 99%

Carotid Flow Time Test Performance for the Detection of Dehydration in Children With Diarrhea

MacKenzie

Nasrin

Atika

et al. 2017

J of Ultrasound Medicine

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“…Studies to date have shown that corrected CFT increases in response to fluid administration or consumption [25, 26], and decreases in response to volume removal in dialysis [22] and blood donation [27]. However, none of these studies correlated corrected CFT with CO. CBF has been less extensively studied.…”

Section: Introductionmentioning

confidence: 99%

Correlation of carotid blood flow and corrected carotid flow time with invasive cardiac output measurements

et al. 2017

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BackgroundNon-invasive measures that can accurately estimate cardiac output may help identify volume-responsive patients. This study seeks to compare two non-invasive measures (corrected carotid flow time and carotid blood flow) and their correlations with invasive reference measurements of cardiac output. Consenting adult patients (n = 51) at Massachusetts General Hospital cardiac catheterization laboratory undergoing right heart catheterization between February and April 2016 were included. Carotid ultrasound images were obtained concurrently with cardiac output measurements, obtained by the thermodilution method in the absence of severe tricuspid regurgitation and by the Fick oxygen method otherwise. Corrected carotid flow time was calculated as systole time/√cycle time. Carotid blood flow was calculated as π × (carotid diameter)2/4 × velocity time integral × heart rate. Measurements were obtained using a single carotid waveform and an average of three carotid waveforms for both measures.ResultsSingle waveform measurements of corrected flow time did not correlate with cardiac output (ρ = 0.25, 95% CI −0.03 to 0.49, p = 0.08), but an average of three waveforms correlated significantly, although weakly (ρ = 0.29, 95% CI 0.02–0.53, p = 0.046). Carotid blood flow measurements correlated moderately with cardiac output regardless of if single waveform or an average of three waveforms were used: ρ = 0.44, 95% CI 0.18–0.63, p = 0.004, and ρ = 0.41, 95% CI 0.16–0.62, p = 0.004, respectively.ConclusionsCarotid blood flow may be a better marker of cardiac output and less subject to measurements issues than corrected carotid flow time.Electronic supplementary materialThe online version of this article (doi:10.1186/s13089-017-0065-0) contains supplementary material, which is available to authorized users.

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“…They concluded that changes in FTc following passive leg raise might be a novel method for evaluating fluid responsiveness in hemodynamically unstable patients [89]. Similarly, Shokoohi et al [87] found a significant change in FTc after passive leg raise maneuver in a sample of dehydrated patients in fasting state. In contrast, this relationship was not significant in a study recently done by Peachey et al [90].…”

Section: Carotid Artery -Corrected Flow Timementioning

confidence: 93%

“…Corrected flow time (FTc), flow time/√cycle time, calculated by considering heart rate correction is used to evaluate intravascular volume status and FTc was found to be directly correlated with intravascular volume by different studies [27,[84][85][86][87]. Blehar et al [84] and Hilbert et al [86] showed that FTc was increased after intravascular volume expansion.…”

Section: Carotid Artery -Corrected Flow Timementioning

confidence: 99%

Effects of Volume Overload and Current Techniques for the Assessment of Fluid Status in Patients with Renal Disease

et al. 2018

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Volume overload is an important, may be the foremost, independent prognostic factor determining the outcome of hemodialysis patients. Therefore, it is crucial to measure fluid status of these patients and avoid volume overload. This review aims to evaluate volume overload, its effects on patients with renal diseases and current methodologies measuring volume status in the body. These techniques will be first classified as clinical evaluation and non-clinical and/or instrumental techniques, which includes biomarkers, ultrasonography, relative blood volume monitoring, bioimpedance, echocardiography, pulmonary artery catheterization, esophageal and/or suprasternal Doppler, and blood viscosity. Advantages and limitations of these different techniques will be reviewed extensively by comparing each other. At last, insights gained from this review can highlight the future prospects in this active area of research.

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The diagnostic utility of sonographic carotid flow time in determining volume responsiveness

Cited by 27 publications

References 8 publications

Carotid Flow Time Test Performance for the Detection of Dehydration in Children With Diarrhea

Carotid Flow Time Test Performance for the Detection of Dehydration in Children With Diarrhea

Correlation of carotid blood flow and corrected carotid flow time with invasive cardiac output measurements

Effects of Volume Overload and Current Techniques for the Assessment of Fluid Status in Patients with Renal Disease

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