Carotid Ultrasound

Scoutt, Leslie M.; Gunabushanam, Gowthaman

doi:10.1016/j.rcl.2019.01.008

Cited by 16 publications

(11 citation statements)

References 54 publications

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“…The most common USD finding in lesions involving the BCT is flow reversal in the right vertebral artery (subclavian steal phenomenon) 14 ; but, in contrast with "single" subclavian steal, which occurs in obstructive lesions of the subclavian artery, there are also changes to flow in the right carotid system. 1,15,16 Manifestations can range from reduction of peak systolic velocity in the carotid artery, with flow remaining anterograde, to cases of total reversal of flow, as reported in the present case. A hypothesis of a significant obstructive lesion of the BCT should always be considered in cases in which there is diffuse reduction of flow in the right carotid artery.…”

Section: Discussionsupporting

confidence: 54%

“…In our review of the literature, we found 24 articles that specifically mention changes found on vascular USD of obstructive lesions of the BCT (Table 1). Six of these describe hypoflow through the internal carotid artery without flow reversal in any phase of the cardiac cycle, 12,13,15,19,22,23 and three only referred to the common carotid, without describing findings specific to the internal carotid. 1,14,17 The most often reported finding (in 13 articles) was partial reversal of flow in the internal carotid artery, with retrograde flow during systole, but antegrade flow in diastole.…”

Section: Discussionmentioning

confidence: 99%

“…Ackerstaff et al 17 1984 Only mentions the common carotid Borne et al 4 2015 Total reversal Brunhölzl and von Reutern 12 1989 Hypoflow without reversal Calin et al 18 2018 Partial reversal Deurdulian et al 2 2016 Partial reversal Esen et al 5 2016 Partial reversal Filis et al 6 2008 Partial reversal Grant et al 11 2006 Total reversal Grosveld et al 14 1988 Only mentions the common carotid Guedes et al 1 2016 Only mentions the common carotid Han et al 7 2017 Partial reversal Horrow et al 19 2008 Hypoflow without reversal Maier et al 20 2014 Partial reversal Racy 10 2019 Partial reversal Rawal et al 13 2019 Hypoflow without reversal Rodriguez 3 2016 Partial reversal Schwend et al 21 1995 Partial reversal Scoutt 15 2019 Hypoflow without reversal Sidhu e Morarji 22 1995 Hypoflow without reversal Tenny and Fleischmann 9 2017 Partial reversal Verlato et al 23 1993 Hypoflow without reversal Uzun et al 8 2008 Partial reversal Willoughby et al 16 2014 Partial reversal Zwiebel and Pellerito 24 2005 Partial reversal…”

Section: Year Flow Through the Internal Carotid Arterymentioning

confidence: 99%

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Inversão total do fluxo em artéria carótida interna direita em paciente com estenose grave do tronco braquiocefálico

et al. 2020

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RESUMO As estenoses graves e oclusões do tronco braquiocefálico (artéria inominada) são raras, e apresentam uma grande variedade de manifestações clínicas, com alterações relacionadas a isquemia cerebral hemisférica, vertebrobasilar e de membro superior direito. A causa mais comum é a aterosclerose. A ultrassonografia vascular com Doppler pode revelar inversão de fluxo na artéria vertebral direita, hipofluxo na subclávia, e vários tipos de alterações no fluxo da carótida direita, incluindo hipofluxo, inversão parcial do fluxo durante o ciclo cardíaco, e até mesmo inversão completa do fluxo na carótida interna, achado este bastante raro. Os autores descrevem o caso de paciente do sexo feminino, tabagista, com estenose grave do tronco braquiocefálico e crises de lipotimia. Além do roubo de artéria subclávia e do fluxo parcialmente invertido na carótida comum direita, a paciente apresentava exuberante fluxo invertido na carótida interna durante todo o ciclo cardíaco, achado este não encontrado na literatura em tamanha magnitude.

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Section: Discussionsupporting

confidence: 54%

Section: Discussionmentioning

confidence: 99%

Section: Year Flow Through the Internal Carotid Arterymentioning

confidence: 99%

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Inversão total do fluxo em artéria carótida interna direita em paciente com estenose grave do tronco braquiocefálico

et al. 2020

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“…The duplex scan makes blood flow audible with the help of the Doppler effect (spectral and color Doppler), and on the other hand, it visualizes the vessels and the surrounding tissues in real time (B-mode). 5-10 MHz range is usually used during the duplex scan of the large vessels of the neck [4,7].…”

Section: Optimal Settingsmentioning

confidence: 99%

Carotid Disease: Usefulness of the Ultrasound

Pánczél

Kemény

Oláh

et al. 2021

Neurosonology in Critical Care

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Carotid ultrasound is the first noninvasive imaging modality for diagnosis and follow-up of different carotid diseases. 2. Duplex ultrasound (DUS) is the optimal method for investigation. 3. The DUS should assess the degree of stenosis, plaque characteristics, intimamedia-thickness and hemodynamic parameters. 4. Peak systolic velocities of 125-230 cm/s are typical for 50-69% stenosis (NASCET) and ≥230 cm/s for ≥70% internal carotid artery stenosis. But in some cases, peak systolic velocity ratio, end-diastolic velocity and velocity ratios may depict better the degree of stenosis. 5. Using spectral Doppler criteria can be also useful for increasing the sensitivity or specificity.

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“…Carotid ultrasound is the primary noninvasive technique for diagnosing and following up with atherosclerotic carotid Original Articlê ORCID: Yi Li, 0000-0001-9087-4833; Wen He, 0000-0002-7177-4498. disease (8). Conventional ultrasound can evaluate plaque morphology, size, echogenicity, and hemodynamic changes and provide an important basis for clinical decisions.…”

Section: Introductionmentioning

confidence: 99%

An ultrasound-derived stroke risk score to identify patients at high risk of stroke

Li¹,

Zheng²,

Zhang³

et al. 2021

Ann Transl Med

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Background: To develop an ultrasound-derived stroke risk (USR) score combining plaque stiffness, surface morphology and lumen narrowing to evaluate the risk of stroke in patients with asymptotic carotid stenosis. Methods:We developed the USR score in a prospective study of symptomatic and asymptomatic patients with ipsilateral carotid lumen narrowing. Multivariable analysis was performed to identify parameters associated with ischemic events, and a USR score was constructed based on the observed β coefficient. The discrimination performance of the USR score was assessed using receiver operating characteristic (ROC) curves. Twenty iterations of 5-fold cross-validation were used for internal validation.Results: We derived the USR score (range, 0-7) by incorporating plaque stiffness (≥80 kPa, 0 points; 60-79 kPa, 1 point; 40-59 kPa, 2 points; <40 kPa, 3 points), plaque surface (smooth, 0 points; irregular, 1 point; ulcer, 2 points) and carotid stenosis (<50%, 0 points; 50-69%, 1 point; ≥70%, 2 points). After adjusting for age and sex, the odds ratio (OR) for every 1-point increase in the USR score increase was 3.3 (P<0.001). The risk of ischemic events increased with increasing USR score (P for trend <0.001). The C statistic of the USR score was 0.84 in the derivation sample and 0.82 in the validation sample. Conclusions:The USR score to assess the risk of ischemic events in patients with carotid stenosis showed preferable discrimination ability and robustness. While external validation is warranted to prove the predictive value, this risk score could help accelerate triage decisions in similar patient populations.

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Carotid Ultrasound

Cited by 16 publications

References 54 publications

Inversão total do fluxo em artéria carótida interna direita em paciente com estenose grave do tronco braquiocefálico

Inversão total do fluxo em artéria carótida interna direita em paciente com estenose grave do tronco braquiocefálico

Carotid Disease: Usefulness of the Ultrasound

An ultrasound-derived stroke risk score to identify patients at high risk of stroke

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