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Dataset results
69 results for “distensibility”
Study of Clinical Features and Efficacy of Small Intestinal Bacterial Overgrowth in Patients With Abdominal Distension
ClinicalTrials.gov study NCT06518850. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Effectiveness of Warm Saline Distension Media on Relieving Pain in Office Hysteroscopy
ClinicalTrials.gov study NCT03111563. IPD Sharing: NO. Countries: 0. Publications: 0.
Central Venous Pressure Versus Inferior Vena Cava Distensibility Index in Assessing Fluid Responsiveness in Septic Shocked Patients
ClinicalTrials.gov study NCT07279064. IPD Sharing: Not stated. Countries: 0. Publications: 0.
The Ability Of Inferior Vena Caval Distensibility Index With Passive Leg Raising Test To Predict Spinal Anesthesia-induced Hypotension In Elderly Patients Undergoing Infra-umbilical Surgeries. A Prosp
ClinicalTrials.gov study NCT05991063. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Internal Jugular Vein Distensibility in Assessment of Fluid Responsiveness in Donors of Living Donor Liver Transplantation
ClinicalTrials.gov study NCT03391037. IPD Sharing: UNDECIDED. Countries: 0. Publications: 0.
Pylorus Distensibility Measurement
ClinicalTrials.gov study NCT06908551. IPD Sharing: Not stated. Countries: 0. Publications: 0.
Assessment of Normal Values of Esophagogastric Junction (EGJ) Distensibility in Healthy Volunteers
ClinicalTrials.gov study NCT01956877. IPD Sharing: Not stated. Countries: 1. Publications: 0.
Non-invasive estimation of vascular compliance and distensibility in the arm vessels: a novel ultrasound-based protocol
<p>Cappelletti S, Caimi A, Caldiroli A, Baroni I, Votta E, Riboldi SA, Marrocco-Trischitta MM, Redaelli A, Sturla F. Non-invasive estimation of vascular compliance and distensibility in the arm vessels: a novel ultrasound-based protocol. Quant Imaging Med Surg. 2022 Jul;12(7):3515-3527. doi: 10.21037/qims-21-987. PMID: 35782271; PMCID: PMC9246759.</p> <p><strong>Abstract</strong></p> <p><strong>Background: </strong>Performance and durability of arterio-venous grafts depend on their ability to mimic the mechanical behavior of the anastomized blood vessels. To select the most suitable synthetic graft, <em>in vivo</em> evaluation of the radial deformability of peripheral arteries and veins could be crucial; however, a standardized non-invasive strategy is still missing. Herein, we sought to define a novel and user-friendly clinical protocol for <em>in vivo</em> assessment of the arm vessel deformability.</p> <p><strong>Methods: </strong>A dedicated protocol, applied on 30 volunteers, was specifically designed to estimate both compliance and distensibility of the brachial and radial arteries, and of the basilic and cephalic veins. Bi-dimensional ultrasound imaging was used to acquire cross-sectional areas (CSAs) of arteries in clinostatic configuration, and CSAs of veins combining clinostatic and orthostatic configurations. Arterial pulse pressure was measured with a digital sphygmomanometer, while venous hydrostatic pressure was derived from the arm length in orthostatic configuration.</p> <p><strong>Results: </strong>For each participant, all CSAs were successfully extracted from ultrasound images. The basilic vein and the radial artery exhibited the largest (21.5±8.9 mm<sup>2</sup>) and the smallest (3.4±1.0 mm<sup>2</sup>) CSAs, respectively; CSA measurements were highly repeatable (Bland-Altman bias <10% and Pearson correlation ≥0.90, for both arteries and veins). In veins, compliance and distensibility were higher than in arteries; compliance was significantly higher (P<0.0001) in the brachial than in the radial artery (3.52×10<sup>-4</sup> <em>vs.</em> 1.3×10<sup>-4</sup> cm<sup>2</sup>/mmHg); it was three times larger in basilic veins than in cephalic veins (17.4×10<sup>-4</sup> <em>vs.</em> 5.6×10<sup>-4</sup> cm<sup>2</sup>/mmHg, P<0.0001).</p> <p><strong>Conclusions: </strong>The proposed non-invasive protocol proved feasible, effective and adequate for daily clinical practice, allowing for the estimation of patient-specific compliance and distensibility of peripheral arteries and veins. If further extended, it may contribute to the fabrication of biohybrid arterio-venous grafts, paving the way towards patient-tailored solutions for vascular access.</p>
Non-Invasive assessment of arterial stiffness: pulse wave velocity, pulse wave analysis and carotid cross sectional distensibility. Comparison between methods
<p>Background: The stiffening of large elastic arteries is currently estimated in research and clinical practice by propagative and non-propagative models, as well as parameters derived from aortic pulse waveform analysis. Methods: Common carotid compliance and distensibility were measured by simultaneously recording the diameter and pressure changes during the cardiac cycle. The aortic and upper arm arterial distensibility was estimated by measuring carotid–femoral and carotid–radial pulse wave velocity (PWV), respectively. The augmentation index and blood pressure amplification were derived from the analysis of central pulse waveforms, recorded by applanation tonometry directly from the common carotid artery. Results: 75 volunteers were enrolled in this study (50 females, average age 53.5 years). A significant inverse correlation was found between carotid distensibility and carotid–femoral PWV (r = −0.75; p < 0.001), augmentation index (r = −0.63; p < 0.001) and central pulse pressure (r = −0.59; p < 0.001). A strong correlation was found also between the total slope of the diameter/pressure rate carotid curves and aortic distensibility, quantified from the inverse of the square of carotid–femoral PWV (r = 0.67). No correlation was found between carotid distensibility and carotid–radial PWV. Conclusions: This study showed a close correlation between carotid–femoral PWV, evaluating aortic stiffness by using the propagative method, and local carotid cross-sectional distensibility.</p>
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