Factors determining maximum inspiratory flow and maximum expiratory flow of the lung

Factors determining maximum inspiratory flow and maximum expiratory flow of the lung.

The factors determining maximum expiratory flow and maximum inspiratory flow of the lung are reviewed with particular reference to a model which compares the lung on forced expiration to a Starling resistor. The theoretical significance of the slope of the expiratory maximum flowvolume curve is discussed. A method of comparing maximum expiratory flow with maximum inspiratory flow at similar lun...

A comparison of maximum inspiratory and expiratory flow in health and in lung disease.

Maximum static inspiratory and expiratory pressures with different lung volumes

BACKGROUND Maximum pressures developed by the respiratory muscles can indicate the health of the respiratory system, help to determine maximum respiratory flow rates, and contribute to respiratory power development. Past measurements of maximum pressures have been found to be inadequate for inclusion in some exercise models involving respiration. METHODS Maximum inspiratory and expiratory air...

In search of maximum inspiratory and expiratory pressure reference equations.

Respiratory muscle weakness can occur in neuromuscular diseases as well as in pulmonary disease. For example, in chronic obstructive pulmonary disease, patients’ muscles may become weakened from hyperinflation, which causes the diaphragm to function at a poor mechanical advantage, or in patients on steroids that can result in myopathies. Pulmonary function tests are used to determine diagnosis,...

The maximum flow problem

In this network we have two special vertices: a source vertex s and a sink vertex t. Our goal is to send the maximum amount of flow from s to t; flow can only travel along arcs in the right direction, and is constrained by the arc capacities. This “flow” could be many things: imagine sending water along pipes, with the capacity representing the size of the pipe; or traffic, with the capacity be...