نتایج جستجو برای: photoelectric factor pef

تعداد نتایج: 852645  

Journal: :The European respiratory journal 1998
H M Boezen B Rijcken J P Schouten D S Postma

The perception of breathlessness is a subject-related factor which is linked to respiratory disease, cardiac disease and overweight. We studied the distribution of breathlessness, its association with respiratory disease, cardiac disease and overweight, as well as its association with lung function, reversibility of airway obstruction ("reversibility") and peak expiratory flow (PEF) variability...

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Journal: :iranian journal of microbiology 0
ae torkamani department of agriculture and food systems (dafs), school of land and environment, university of melbourne, melbourne, vic 3010, australia.

background and objectives: pulsed electric field (pef) is a novel emerging technology which is believed to have the potential to substitute conventional thermal pasteurization (htst). in the current study pef was compared with htst based on microbial inactivation and quality attributes. materials and methods: juice was prepared by extracting it from semirum apples. they were chilled to 4ºc over...

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Journal: :BMC Pulmonary Medicine 2006
Thomas Bongers B Ronan O'Driscoll

BACKGROUND Different lung function equipment and different respiratory manoeuvres may produce different Peak Expiratory Flow (PEF) results. Although the PEF is the most common lung function test, there have been few studies of these effects and no previous study has evaluated both factors in a single group of patients. METHODS We studied 36 subjects (PEF range 80-570 l/min). All patients reco...

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Journal: :European heart journal 2014
Michele Senni Walter J Paulus Antonello Gavazzi Alan G Fraser Javier Díez Scott D Solomon Otto A Smiseth Marco Guazzi Carolyn S P Lam Aldo P Maggioni Carsten Tschöpe Marco Metra Scott L Hummel Frank Edelmann Giuseppe Ambrosio Andrew J Stewart Coats Gerasimos S Filippatos Mihai Gheorghiade Stefan D Anker Daniel Levy Marc A Pfeffer Wendy Gattis Stough Burkert M Pieske

The management of heart failure with reduced ejection fraction (HF-REF) has improved significantly over the last two decades. In contrast, little or no progress has been made in identifying evidence-based, effective treatments for heart failure with preserved ejection fraction (HF-PEF). Despite the high prevalence, mortality, and cost of HF-PEF, large phase III international clinical trials inv...

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Journal: :The Journal of Thoracic and Cardiovascular Surgery 2021

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2018
Justin A. Ezekowitz Finlay A. McAlister Jonathan Howlett Wendimagegn Alemayehu Ian Paterson Israel Belenkie Gavin Y. Oudit Padma Kaul Jason R. Dyck Todd Anderson

AIMS Heart failure with a preserved ejection fraction (HF-PEF) remains a difficult clinical diagnosis. The aim of this study was to test the utility of established criteria to classify patients with HF-PEF. We prospectively enrolled patients into one of five groups across a spectrum of cardiac disease and applied three different criteria for HF-PEF and calculated diagnostic metrics. METHODS A...

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2016
Raphael Mendes Ritti-Dias Gabriel Grizzo Cucato Fábio Gazelato de Mello Franco Maysa Seabra Cendoroglo Fábio Nasri Maria Luiza Monteiro-Costa José Antonio Maluf de Carvalho Luciana Diniz Nagem Janot de Matos

OBJECTIVE The aim of the present study was to verify if there is sex difference in the associations among handgrip strength, peak expiratory flow (PEF) and timed up and go (TUG) test results. METHODS The sample included 288 consecutive elderly men (n=93) and women (n=195). Functional capacity was measured using the TUG test, and muscle strength was measured based on handgrip. Moreover, as a m...

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2013
Hui Ai Furong Wang Na Zhang Lingyao Zhang Chaoliang Lei

In our previous study, protein-enriched fraction (PEF) that was isolated from the larvae of the housefly, Musca domestica L. (Diptera: Muscidae), showed excellent hepatoprotective activity as well as the potential for clinical application in therapy for liver diseases. In this study, antiviral, immunomodulatory, and free radical scavenging activities of PEF were evaluated. The antiviral results...

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Journal: :Thorax 1993
J Côté S Kennedy M Chan-Yeung

BACKGROUND Peak expiratory flow rates (PEF) are often used to confirm the diagnosis of occupational asthma. The records are usually analysed qualitatively, and this may lead to interobserver disagreement. In this study the diagnostic value of a qualitative assessment of change in PEF was compared with objective measures of change in PEF and the results of a specific inhalation challenge test wi...

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Journal: :The European respiratory journal 2000
W R Douma H A Kerstjens C M Roos G H Koëter D S Postma

Guidelines for asthma management advocate home peak expiratory flow (PEF) monitoring. It is commonly stated that PEF variability is a good proxy of bronchial hyperresponsiveness (BHR), a hallmark of asthma. However, this has hardly been tested longitudinally, as required to monitor asthma. This study assesses which PEF index correlates best with BHR longitudinally and whether the correlation im...

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