نتایج جستجو برای: Collapsibility index

تعداد نتایج: 396469  

2017
Paweł Andruszkiewicz Dorota Sobczyk Krzysztof Nycz Izabela Górkiewicz-Kot Mirosław Ziętkiewicz Karol Wierzbicki Jacek Wojtczak Ilona Kowalik

Background Ultrasound measurement of the inferior vena cava diameter and its respiratory variability are amongst the predictors of fluid volume status. The primary purpose of the present study was to compare the consistency of inferior vena cava diameter measurements and the collapsibility index, obtained with convex and cardiac transducers. A secondary aim was to assess the agreement of the pa...

2017
Abid Ilyas Wasib Ishtiaq Salman Assad Haider Ghazanfar Salman Mansoor Muhammad Haris Aayesha Qadeer Aftab Akhtar

OBJECTIVE The objective of our study is to assess the correlation between inferior vena cava (IVC) diameters, central venous pressure (CVP) and the IVC collapsibility index for estimating the volume status in critically ill patients. METHODS This cross-sectional study used the convenient sampling of 100 adult medical intensive care unit (ICU) patients for a period of three months. Patients ≥ ...

Kerman and its surrounding towns consist of a flat alluvial plain of fine silt and clay materials. In morphological aspects, these sediments have a very gentle slope with the main infrastructure of the city build on them. Generally, the structure of undisturbed soils is developed over time due to the influence of environmental factors. Geological factors in Kerman fine-grained alluviums have ca...

Journal: :Acta oto-laryngologica 2000
H Steinhart J Kuhn-Lohmann K Gewalt J Constantinidis F Mertzlufft H Iro

Increased upper airway collapsibility has been suspected of being involved in the pathogenesis of sleep-related diseases. It is assumed that patients with severe obstructive sleep apnea syndrome (OSAS) show a stronger collapse of the upper airway compared with habitual snorers. It was the objective of this study to analyze the patterns of upper airway collapse in habitual snorers and patients w...

Journal: :The European respiratory journal 1996
Y Tsushima J Antila E Svedström A Vetriö E Laurikainen O Polo M Kormano

This study addressed the question of whether there are any differences in the size and collapsibility of the upper airway measured by digital fluoroscopy, between snorers and controls whilst they were awake and breathing normally; and whether there are any correlations between these measurements and other clinical data. The dynamic changes of the upper airway size were evaluated using digital f...

2014
Joshua Jauregui Daniel Nelson Esther Choo Branden Stearns Adam C Levine Otto Liebmann Sachita P Shah

BACKGROUND Prior research suggests that the ratio of the ultrasound-measured diameter of the inferior vena cava to the aorta correlates with the level of dehydration in children. This study was designed to externally validate this and to access the accuracy of the ultrasound measured inspiratory IVC collapse and physician gestalt to predict significant dehydration in children in the emergency d...

Background: Several multiphase flow analyses have been developed to predict the fate of particles used in inhalation drug delivery; however, the collapse of droplets during their passage through respiratory tract has not been investigated. Objective: To assess the probability of droplet collapse in the upper respiratory tract.Methods: A 3D model of mouth-to-second generation airway after the tr...

Journal: :journal of biomedical physics and engineering 0
m. n. ashtiani laboratory of biomechanical researches, mechanical engineering department, sahand university of technology, tabriz 51335, iran m. tafazzoli-shadpour faculty of biomedical engineering, amirkabir university of technology, tehran 15875, iran h. najafi department of physics, university of velayat, iranshahr 99111, iran

background: several multiphase flow analyses have been developed to predict the fate of particles used in inhalation drug delivery; however, the collapse of droplets during their passage through respiratory tract has not been investigated. objective: to assess the probability of droplet collapse in the upper respiratory tract. methods: a 3d model of mouth-to-second generation airway after the t...

Journal: :Turkish Journal of Trauma and Emergency Surgery 2016

2011
Salvatore Romano Adriana Salvaggio Raquel Pastrello Hirata Anna Lo Bue Stefano Picciolo Luis Vicente Franco de Oliveira Giuseppe Insalaco

OBJECTIVES To investigate the usefulness of measuring upper airway collapsibility with a negative expiratory pressure application as a screening test for severe obstructive sleep apnea (OSA). INTRODUCTION OSA is a risk factor for cardiovascular disease, and it may have serious consequences. Its recognition may have important implications during the perioperative period. Increased upper airway...

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