plethysmography


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Related to plethysmography: Impedance plethysmography

plethysmography

 [plĕth″iz-mog´rah-fe]
the determination of changes in volume by means of a plethysmograph.
air-cuff plethysmography a technique for measuring changes in the circumference of a limb by recording the changes in pressure in an air-filled cuff surrounding the limb.
respiratory inductive plethysmography a technique that uses elastic bands around the chest and abdomen of the patient to calculate chest and abdominal expansion, respiratory rate, respiratory pattern, and tidal volume.

pleth·ys·mog·ra·phy

(pleth'iz-mog'ră-fē),
Measuring and recording changes in volume of an organ or other part of the body by a plethysmograph.
[G. plēthysmos, increase, + graphē, a writing]

plethysmography

A technique that detects changes in the volume of an organ, limb or the body, by measuring the flow of blood through its veins. See Arterial plethysmography, Impedance plethysmography, Ocular plethysmography.
Plethysmography
Whole body plethysmography measures the volume of gas in the lungs, including that which is trapped in poorly communicating air spaces,  of particular use in COPD and emphysema
Impedance plethysmography Venous impedance plethysmography A technique used to diagnose acute venous obstruction or vascular insufficiency of an extremity by measuring the change in limb volume with each arterial pulse and during cuff occlusion of the venous flow from the limb, the manipulation of which allows evaluation of either the arterial or venous flow  

pleth·ys·mog·ra·phy

(pleth'iz-mog'ră-fē)
Measuring and recording changes in volume of an organ or other part of the body by a plethysmograph.
[G. plēthysmos, increase, + graphē, a writing]

plethysmography

A method of assessing the volume of blood flowing through a limb or other body part by measuring the change in volume, using strain gauges, air cuffs, impedance electrodes or other methods.
References in periodicals archive ?
Comparison of air-displacement plethysmography with hydrostatic weighing and bioelectrical impedance analysis for the assessment of body composition in healthy adults.
However, the greater effects on sleep observed in the noise-free active period (e.g., food and water intake and various sleep parameters) and the noise-free rest period (e.g., plethysmography parameters) are not consistent with this hypothesis.
We investigated whether the resting lung function variables (spirometry, body plethysmography and [N.sub.2]SBW test) could independently predict performance during the CPET and the HRQoL in these patients.
Welsch, "Measurements of vascular function using strain-gauge plethysmography: technical considerations, standardization, and physiological findings," American Journal of Physiology-Heart and Circulatory Physiology, vol.
Moreover, we focused on lung function parameters acquired by body plethysmography, which has advantages compared to traditional spirometry: While RV and TLC cannot be measured by spirometry, both are altered in COPD due to the loss of elastic recoil, airway closure, and hyperinflation of the lung [34].
Towards wearable plethysmography applications," in 2013 35th Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC), pp.
We used a whole-body plethysmography chamber to measure the Penh value and found that tomatidine can suppress AHR in asthmatic mice.
The rest of the paper is organized as follows: Section II describes the developed system in general, Section III describes the implementation of respiratory inductance plethysmography and electrocardiogram (ECG) sensors in more detail, Section IV presents signal processing and parameters evaluation methods which were suggested in this work and implemented in the system, Section V is assigned to experimental verification.
Two weeks later, spirometry before and after bronchodilator and whole-body plethysmography were performed according to American Thoracic Society/European Respiratory Society recommendationsl [15] by qualified respiratory technologists blinded to patient clinical information, and a non-contrast highresolution chest computed tomography scan (HRCT) was performed by a single experienced radiographer.
Spirometric indices and lung volumes measured by whole-body plethysmography were compared in groups.
Data of infants who failed to meet quality control standards of plethysmography testing were excluded from the analysis.