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Carotid Doppler - DOAJ

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Last Updated: 16 July 2022

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Carotid Doppler Study in Patients with Cerebral Infarction

Color duplex flow ultrasonography has now become the most widely used noninvasive method of determining extra cranial cerebrovascular occlusive disease in this setting. A total of 62 patients with acute stroke medical & radiological diagnosis had been referred from Medical & Neurological units to the Radiology Department / Ultrasound Unit for carotid arteries examination. Results: Thirty out of 62 patients had signs of ipsilateral carotid stenosis, eight patients had 59% stenosis, 8 patients had 5-69% stenosis, and four patients had > 70% stenosis. Conclusion: The size of cerebral infarction is closely related to degree of ipsilateral carotid artery stenosis, especially when the plaque is smooth with an irregular or ulcerated surface, and that an elevated intima media thickness of common carotid artery is closely linked to stroke and its risk factors, according to this report.

Source link: https://doi.org/10.32007/jfacmedbagdad.v4363-366%


Carotid Doppler Ultrasonography in Patients with Co-existing Type 2 Diabetes Mellitus and Hypertension in Nigeria

Background: Diabetes mellitus and hypertension have been increasing worldwide, with subcutaneous atherosclerosis and hypertension. Objectives: To determine and compare the carotid arterial wall thickness and blood flow velocities of adults with co-existing DM and HTN with age- and sex-matched non-hypertensive measures. Compared to the controls, the subjects' CIMT was statistically significant with a three-fold increase. Among the participants, EDV and PI, EDV and RI and RI and RI and RI and RI and RI and RI and RI and RI and RI also showed strong and significant correlations. Conclusion: With an elevated CIMT, a significant decrease in flow velocities may have been a sign of subclinical atherosclerosis. Therefore, carotid ultrasonography should be performed in people at risk for early detection and possible prevention of atherosclerotic disorders.

Source link: https://doi.org/10.30442/ahr.0801-05-156


Temporal concordance between pulse contour analysis, bioreactance and carotid doppler during rapid preload changes

Materials and methods The common carotid artery is located in the Common Carotid artery, and volunteers did preload changes while simultaneously wearing a non-invasive, pulse-contour stroke volume monitor, a bioreactance SV monitor, and a portable, wearable Doppler ultrasound patch. The sensitivity and specificity of detecting preload changes in three temporal windows were tested. Immediately, the wearable Doppler demonstrated high sensitivity and specificity for detecting preload changes with a region under the receiver operator curve of 0. 98 for both velocity time integral and corrected flow time. Conclusions Carotid Doppler ultrasound and non-invasive pulse contour detected rapid hemodynamic change with equal precision, and bioreactance increased with time.

Source link: https://doaj.org/article/8a9c46160ee14825b5de067ef4028f8b


Temporal concordance between pulse contour analysis, bioreactance and carotid doppler during rapid preload changes.

Materials and methods The common carotid artery was artery by the common carotid artery, and volunteers underwent preload changes while wearing a non-invasive, pulse-contour stroke volume monitor, a bioreaction SV monitor, and a portable, wearable Doppler ultrasound patch. The sensitivity and specificity of detecting preload changes over three temporal windows was determined. Immediately, the wearable Doppler had high sensitivity and specificity for detecting preload change with an area under the receiver operator curve of 0. 98 for both velocity time integral and corrected flow time.

Source link: https://doi.org/10.1371/journal.pone.0265711


Frequency of Carotid Artery Stenosis in Ischemic Stroke by using Carotid Doppler Ultrasonography in a Teaching Hospital

Background: Atherosclerotic artery disease in the cranial cavity has long been recognized as the most common source of emboli to the brain causing stroke. Carotid doppler ultrasonography was used to determine the prevalence of carotid artery stenosis in ischemic stroke patients. Participants from 27 to 93 years old of both sexes were referred to Radiology Department for CT brain and cerebral infarction. Each patient underwent bilateral carotid doppler ultrasonography using an SSD-140 ultrasound machine with a 7. 5 MHz linear probe. Results: Out of 100 patients with ischemic infarction on CT's brain, 56 had carotid stenosis on color doppler ultrasonography of carotid arteries. In the majority of cases, the plaque was smooth, with no indications of plaques. In our case, the frequency of carotid stenosis as detected by Doppler ultrasonography in an ischemic stroke is 56%.

Source link: https://doaj.org/article/2c0d96b3c52d440a9cceaeb652aef27e


THE ROLE OF THE CAROTID DOPPLER EXAMINATION IN THE EVALUATION OF ATHEROSCLEROTIC CHANGES IN BETA THALASSEMIA PATIENTS

Ultra-cranial internal carotid arteries ultrasound scanning of extra-cranial internal carotid arteries is non-invasive and fast to perform, and may help identify children at an elevated risk of stroke who would otherwise be missed. Increased media thickness is a structural marker of early atherosclerosis, and it is related to cardiovascular risk factors and coronary artery disease severity and severity. Objective: To determine the role of carotid Doppler examination and cIMT testing as a predictor of atherosclerotic changes in BTM children with iron overload, iron overload. A significant negative correlation was found between CIMT and hematocrit values, but no significant correlation was found between CIMT and Hb level. Conclusion: Carotid Doppler is a highly accurate way to identify cIMT rise in thalassemic patients, indicating a strong connection to iron overload features.

Source link: https://doi.org/10.4084/mjhid.2015.023


General principles of carotid Doppler ultrasonography

The ulceration of plaque is also recognized as one of the key predictors of future embolic event risk. For determining carotid artery stenosis, color Doppler ultrasonography and pulse Doppler ultrasonography have been used. Ultrasonography by Doppler has special physical characteristics. gt;gt;lt;/p> To perform optimal Doppler ultrasonography studies, the operator must be familiar with the physics and other aspects of Doppler ultrasonography.

Source link: https://doi.org/10.14366/usg.13018


Can Emergency Physicians Perform Common Carotid Doppler Flow Measurements to Assess Volume Responsiveness?

Introduction: Common carotid flow measurements can be used to determine volume responsiveness in a clinically useful manner. The aim of this study was to determine whether emergency physicians were able to obtain sonographic images and measurements of the common carotid artery velocity time, which may be useful in determining volume responsiveness in the clinical setting. Methods: We produced a five-minute instructional video demonstrating a method to obtain common carotid ultrasound images and measure emergency medicine residents in this prospective observational study. Participants were then encouraged to image the common carotid artery and obtain VTi measurements. Results: A total of 30 EM residents participated in the study, and each undertook the examination twice. Overall, a Median resident's satisfaction with accurately performing carotid VTi tests was 3. After watching a brief instructional video, EM residents at our institution learned the method for obtaining common carotid artery Doppler flow measurements.

Source link: https://doi.org/10.5811/westjem.2015.1.24301


Carotid Doppler Measurement Variability in Functional Hemodynamic Monitoring: An Analysis of 17,822 Cardiac Cycles

A measure of fluid responsiveness is used by Carotid Doppler ultrasound, but assessing change with statistical certainty requires a large beat sample size. During significant cardiac preload changes, We measured the degree of variation of the carotid artery velocity time integral and corrected flow time. During the lowest-tolerated lower body negative pressure stage, the median coefficient of variation of the carotid velocity time integral was 8. 7% at baseline and 11. 9% at 11. 9%.

Source link: https://doi.org/10.1097/CCE.0000000000000439


Visualization of Carotid Doppler in Patients with Ischemic Stroke at Dr. Hasan Sadikin General Hospital Bandung Year 2016-2019

Several pathological changes in both the intra and extracranial arteries that supply the brain can cause cerebral blood flow disruption and cerebral dysfunction, which can lead to cerebral dysfunction. Methods: The cross-sectional descriptive study design with total sampling technique was used on the medical records of ischemic stroke patients with carotid Doppler ultrasound at the Department of Cardiology and Vascular Medicine, Dr. Hasan Sadikin General Hospital Bandung from 2016 to 2019. Both atherosclerotic plaques were found in the right and left carotid versions, with the same percentage of plaque being present in both carotid and left cascades. In a 13. 2% right system and 15. 8% left system, Intimal media thickening was detected. Conclusions: The majority of the ischemic stroke patients in this study have normal carotid Doppler ultrasound findings. In ischemic stroke patients in Indonesia, a further investigation on the presence of plaque is needed.

Source link: https://doi.org/10.15850/amj.v8n3.2285

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions

* Please keep in mind that all text is summarized by machine, we do not bear any responsibility, and you should always check original source before taking any actions