plethysmograph


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Related to plethysmograph: body plethysmograph

plethysmograph

 [plĕ-thiz´mo-graf]
any device for measuring and recording variations in the volume of an organ, part, or limb.
body plethysmograph a device used in pulmonary function tests to measure parameters such as functional residual capacity (FRC) and lung-thorax compliance (CLT). It consists of a large box in which the subject can be sealed so that volume of the thorax can be determined from pressure changes in the box.

ple·thys·mo·graph

(ple-thiz'mō-graf),
A device for measuring and recording changes in volume of a part, organ, or whole body.
[G. plēthysmos, increase, + graphō, to write]

plethysmograph

(plĕ-thĭz′mə-grăf′, plə-)
n.
An instrument that measures variations in the size of an organ or body part on the basis of the amount of blood passing through or present in the part.

ple·thys′mo·graph′ic adj.
pleth′ys·mog′ra·phy (plĕth′ĭz-mŏg′rə-fē) n.

ple·thys·mo·graph

(plĕ-thiz'mŏ-graf)
A device for measuring and recording changes in volume of a part, organ, or whole body.
[G. plēthysmos, increase, + graphō, to write]
References in periodicals archive ?
The volume of paw oedema in each group was determined with plethysmograph apparatus and the subsequent readings were taken at an interval of 30 min for a total of 180 min.
Frazer, "Unrestrained acoustic plethysmograph for measuring specific airway resistance in mice," Journal of Applied Physiology, vol.
Venous cuffs were then connected to automatic pneumatic inflators (Hokanson, E-20 rapid cuff inflator; Bellevue, WA) set to 50 mmHg and calibrated strain gauges were placed around both forearms and connected to a plethysmograph (Hokanson, model EC-4, Bellevue, WA).
With a description of treatment such as the one provided above by Goocher (1994), it would not be surprising to learn that, in some jurisdictions, adolescents who have committed sexual crimes have routinely been removed from their homes--regardless of the nature of their crimes--subjected to polygraph and penile plethysmograph (PPG) examinations, aggressively and repeatedly confronted regarding the details of their past sexual crimes, and asked to engage in punishment-based behavioral procedures--designed for adults--that are intended to alter their presumed deviant sexual arousal.
Pulse plethysmography (PPG) was described in the 1930s (1), prior to the development of the pulse oximeter, and the combination of the two approaches in the modern pulse oximeter allows continuous non-invasive monitoring of arterial oxygenation, pulse rate and pulse plethysmograph waveform analysis (2).
Mole, "Evaluation of a new air displacement plethysmograph for measuring human body composition," Medicine and Science in Sports and Exercise, vol.27, no.12, pp.1686-1691, 1995.
Due to the nature of the oxyhaemoglobin dissociation curve, SpO2 levels below 85% cannot be interpreted accurately via plethysmograph (Yentis et al 2009).
Spirometry and carbon monoxide (CO) gas transfer were measured using Medgraphics Elite Series Plethysmograph. The actual results of PFT except for DLCO are expressed as the percentage of predicted values.
Body Fat Content- Body fat content was measured by an Impedance Plethysmograph (RJL systems, Clinton TWP, MI).
FBF was estimated by venous occlusion plethysmography, using a mercury-in-rubber strain gauge (Hokanson EC6 strain gauge plethysmograph, D.E.
Spirometry was measured by an experienced scientific officer using a Vmax 22D spirometer coupled to an Autobox V62J Body Plethysmograph and Spectra software (Sensormedics Corp., Yorba Linda, CA) in accordance with American Thoracic Society guidelines, (7), (8) and the results were expressed as a percentage of predicted normal.
The body plethysmograph directly measures airway resistance by measuring the pressures needed to produce resultant flows and thus the units for Raw are cm H2O/liter/ second.