Results 21 to 30 of about 109,154 (297)

Plethysmographic Loops: A Window on the Lung Pathophysiology of COPD Patients

Frontiers in Physiology, 2018
Plethysmographic alveolar pressure-flow (Palv–F) loops contain potentially relevant information about the pathophysiology of chronic obstructive pulmonary disease (COPD), but no quantitative analysis of these loops during spontaneous breathing has ever ...
Dejan Radovanovic, Matteo Pecchiari, Fabio Pirracchio, Camilla Zilianti, Edgardo D’Angelo, Pierachille Santus   +5 more
doaj   +1 more source

Physical Properties of Helium and Application in Respiratory Care

Encyclopedia, 2023
Helium is a low-density, inert, monoatomic gas that is widely used in medical applications. In respiratory care, Helium is mainly used as an adjunct therapy for patients with severe upper airway obstruction and asthma.
Eric Chappel
doaj   +1 more source

Metformin reduces airway glucose permeability and hyperglycaemia-induced Staphylococcus aureus load independently of effects on blood glucose [PDF]

, 2013
Background Diabetes is a risk factor for respiratory infection, and hyperglycaemia is associated with increased glucose in airway surface liquid and risk of Staphylococcus aureus infection.
Garnett, James P, Tregoning, John S, Baines, DL, Baines, Deborah L, Knight, Gwenan M, Naik, S, Lindsay, JA, Tregoning, JS, Naik, Sonam, Garnett, JP, Baker, EH, Lindsay, Jodi A, Gill, S, Baker, Emma H, Gill, Simren, Knight, GM   +15 more
core   +1 more source

Impulse oscillometry may be of value in detecting early effects of obesity on airway resistance

Egyptian Journal of Chest Disease and Tuberculosis, 2019
Background and objective Obesity as a major nutritional problem is badly associated with respiratory compliance. The effortless technique such as impulse oscillometry system (IOS) could have a supremacy value over the commonly used pulmonary function ...
Hossam E.M Abdel-Hamid
doaj   +1 more source

Evaluating the effects of vitamin D Level on airway obstruction in two asthma endotypes in humans and in two mouse models with different intake of vitamin D during early-life

Frontiers in Immunology, 2023
IntroductionAsthma is primarily divided into two categories: type 2 (T2-high) and non-type 2 (T2-low). A relationship between asthma severity and vitamin D deficiency has been identified, but its impact on each asthma endotype remains unknown.MethodsWe ...
Yan Zhou, Yali Qiu, Wuping Bao, Lei Han, Yishu Xue, Yingying Zhang, Xue Tian, Qiang Fu, Chengjian Lv, Dongning Yin, Min Zhang   +10 more
doaj   +1 more source

Assessing Change in Airway Calibre—Measurement of Airway Resistance [PDF]

British Journal of Clinical Pharmacology, 1979
The need for tests to assess bronchodilatation or bronchoconstriction is of considerable importance in respiratory pharmacology. It can be approached either by measuring flow during conditions of maximal effort as discussed in the previous paper or by measurements of airway resistance under low flow conditions.
A E, Tattersfield, I M, Keeping
openaire   +2 more sources

Gas exchange during exercise in habitually active asthmatic subjects [PDF]

, 2005
We determined the relations among gas exchange, breathing mechanics, and airway inflammation during moderate- to maximum-intensity exercise in asthmatic subjects.
Haverkamp, HC, Eldridge, MW, Rodman, JR, Pegelow, DF, Miller, JD, Romer, LM, Dempsey, JA   +6 more
core   +1 more source

A novel approach in understanding the basic modes of ventilation in a recent generation mechanical ventilator– A review of the underlying principles

Indian Journal of Anaesthesia, 2023
Understanding the basic concepts and the dynamics of the equation of motion will help the anaesthesiologist and the intensive care physician in gaining an insight into the basics of modern mechanical ventilation. An equation of the type Vt = V0 × (1-e-kt)
Vithal Krishna Dhulkhed, Pavan Vithal Dhulkhed, Anusha Ramachandra Katti, Madhuri Kurdi, Sukhminder Jit Singh Bajwa   +4 more
doaj   +1 more source

Exercise-Induced Bronchoconstriction Identified Using the Forced Oscillation Technique

Frontiers in Physiology, 2019
Objective: Lung mechanics using the forced oscillation technique (FOT) is suggested to be equivalent and more sensitive in determining exercise-induced bronchoconstriction (EIB) than spirometry.
Leigh M. Seccombe, Leigh M. Seccombe, Matthew J. Peters, Matthew J. Peters, Lachlan Buddle, Claude S. Farah, Claude S. Farah, Claude S. Farah   +7 more
doaj   +1 more source

Assessment of functional tests on determining resistance of respiratory tract in patients with bronchial asthma, COPD and their combination.

Medičnì Perspektivi, 2017
The mechanical properties of the respiratory tract (including airway resistance) is an important indicator of pulmonary function, and definition of resistance is used to diagnose and monitor obstructive lung diseases. This study was performed in order to
K. V. Nazarenko, S. G. Opimakh, M. O. Polianskaja   +2 more
doaj   +1 more source