elastance


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elastance

 [e-las´tans]
the quality of recoiling on removal of pressure without disruption, or an expression of the measure of the ability to do so in terms of unit of volume change per unit of pressure change; it is the reciprocal of compliance.

e·las·tance

(ē-las'tănts),
A measure of the tendency of a structure to return to its original form after removal of a deforming force. In medicine and physiology, usually a measure of the tendency of a hollow viscus (for example, lung, urinary bladder, gallbladder) to recoil toward its original dimensions on removal of a distending or compressing force, the recoil pressure resulting from a unit distention or compression of the viscus; the reciprocal of compliance. The relationship between elasticity and elastance is of the same nature as that between the specific inductive capacity of an insulator material and the capacitance of a particular condenser made from that material.

elastance

/elas·tance/ (e-las´tans) the quality of recoiling without disruption on removal of pressure, or an expression of the measure of the ability to do so in terms of unit of volume change per unit of pressure change. Symbol E. It is the reciprocal of compliance.

elastance

[ilas′təns]
Etymology: Gk, elaunein, to drive
1 the quality of recoiling or returning to an original form after the removal of pressure.
2 the degree to which an air- or fluid-filled organ, such as a lung, bladder, or blood vessel, can return to its original dimensions when a distending or compressing force is removed.
3 the measurement of the unit volume of change in such an organ per unit of decreased pressure change.
4 the reciprocal of compliance.

e·las·tance

(ĕ-las'tăns)
1. A measure of the stiffness of a chamber expressed as a change in pressure per unit change in volume; the reciprocal of compliance.
2. internal medicine, physiology Usually a measure of the tendency of a hollow viscus (e.g., lung, urinary bladder, gallbladder) to recoil toward its original dimensions on removal of a distending or compressing force.

elastance

the measure of the tendency of a hollow viscus to recoil toward its original dimensions upon removal of a distending or compressive force; reciprocal of compliance

elastance

the quality of recoiling on removal of pressure without disruption, or an expression of the measure of the ability to do so in terms of unit of volume change per unit of pressure change; it is the reciprocal of compliance.
References in periodicals archive ?
We observed increased tissue damping and tissue elastance at baseline (lung mechanics measurements taken without MCh) with the maximum dose of MCh, as well as an increased number of mucus-producing cells in the airways, of influenza-exposed mice compared with control mice.
Relationship between heterogeneous changes in airway morphometry and lung resistance and elastance.
There was evidence to suggest that both tissue damping and tissue elastance were lower in arsenic-exposed mice compared with controls (p = 0.
the height of the PV curves) (C), baseline values for airway resistance (Rn) (D), the coefficient of lung tissue damping, G (E), and the coefficient of lung tissue elastance, H (F).
Therefore, if the lung and chest wall elastance are similar, the pressure increment measured relative to atmosphere (plateau minus total PEEP) will be evenly split--pleural pressure will rise by the same amount as the pressure that expanded the lung.
Secretions and cardiac pulsation may cause undulations and vibrations that have little to do with parenchyma elastance.
There are no set targets of pressure, volume or flow, rather the airway pressure is increased or decreased in proportion to the patient effort via positive feedback control using respiratory elastance and resistance as the feedback signals (16,43).