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The role of equal pressure points in understanding pulmonary
When airway pressure has dropped to a level where it equals intrapleural pressure during forced expiration, an equal pressure point (EPP) is reached (4). At.

Tracheobronchomalacia and Excessive Dynamic Airway Collapse
latory disorders and are relevant to understanding flow limitation in EDAC and TBM.30,31. Flow-Limitation Theories. Equal pressure point theory: dynamic.

Airflow Limitation and Spirometry
pressure within the airway is matched by the surrounding pleural pressure. This is referred to as the equal pressure point. The equal pressure point is defined ...

Mechanisms of expiratory flow limitation
The role of isovolume pressure flow curves in directing attention to expira- ... equal pressure point concept to current concepts that suggest that there are two.

Expiratory Flow Limitation - Wiley Online Library
equal pressure point concept has been largely successful in providing intuitive understanding of the phenomenon, wherein maximal flows are determined by ...

Bronchial Mucus Transport - Respiratory Care
airways are compressed by the transmural pressure (Fig. 2). .... of the equal pressure point, airway compression can take place and cause high linear airflow  ...

Optimum Design Parameters for a Therapist - Respiratory Care
on the equal-pressure-point theory. The equal-pressure point is where the intraluminal and extraluminal pressures equalize across the airway. Proximal to the ...

The Physiologic Basis of Spirometry
Equal Pressure Point. Elastic Recoil. Transmural Pressure. Wave Speed Theory. Effort. The Process of Spirometry. Central and Upper Airway Obstruction.

Airflow during Forced Expiration - ATS Journals
of the April issue of AnnalsATS (1), presents an excellent summary of the equal pressure point model of forced expiration. (2). However, I wish to point out ...

Long-Term Success after Bilateral Lung - ATS Journals
of the April issue of AnnalsATS (1), presents an excellent summary of the equal pressure point model of forced expiration. (2). However, I wish to point out ...

Should PEEP Be Used in Airflow Obstruction? - ATS Journals
ment of an intrathoracic "equal pressure point" requires only that the extramural pressure surrounding the airway (Pem) exceed the pressure at the airway open-.

pulmonary function tests and their implication in anaesthesia - GMCH
Jun 30, 2014 ... EQUAL PRESSURE POINT. Slowed expiration reduces the decrease in pressure from the alveoli toward the mouth because lower flow ...

Resistance and Collapse in Bronchial Airways - Clinical Science
The contention that mouth pressure equals the surrounding pressure of the ... pressure, which is measured as the no-flow point of the system (point B, Fig. 2).

Respiratory and Renal Review
Respiratory Pressure Cycle (Inspiration, Expiration, and Ventilation): .... If Pairway decreases below PIP (the equal pressure point) the airway will collapse ( ...

certified respiratory function scientist (crfs) - Australian and New
2.1.7 Volume-time, flow-volume and pressure-flow relationships .... B - the point at which the pressure inside the airways equals the pressure outside the airways.

8.7 Die mechanischen Eigenschaften von Lunge - Thieme Connect
Dieser „Equal Pressure Point“ liegt in der ge- sunden Lunge im Bereich der Segmentbronchien. Da mund- wärts davon der Umgebungsdruck größer als der  ...

total pressure generated is equal to the sum of elastic (Pel) and resistive (or non- elastic) (Pres) ... A few other conventions need to be emphasized at this point.

Current concepts in physiotherapy - NCBI
An equal pressure point develops, but at a lower lung volume and at a point much further downstream in comparison with a normal forced expiratory manoeuvre.

The Use of a Helium-Oxygen Mixture during Maximum Expiratory
'Abbreviations used in this paper: EPP, equal pressure point; FEV1/FVC, forced expiratory volume in 1 s/forced vital capacity; MEFV, maximum expiratory ...

3.1 Lung volume, alveolar volume, and thoracic gas volume
site effect. In this case a large pulmonary recoil pressure displaces the equal pressure point towards the mouth and thus opposes compression of the airways.