Results 251 to 260 of about 15,598 (296)

Evaluation of venous occlusion plethysmograph

Journal of Applied Physiology, 1961
Inflow and outflow, occlusion and perfusion pressures, and pressure in a small vein in the paw were measured simultaneously with the plethysmogram on the amputated forepaws of dogs. Venous tamponade was complete for a period of time dependent on the height of occlusion pressure and the magnitude of arterial flow.
Harold D. Green, Margaret C. Conrad
openaire   +3 more sources

Comparison of finger plethysmograph to ECG in the measurement of heart rate variability.

Psychophysiology, 2002
Two experiments compared finger plethysmograph (FP) to electrocardiogram (ECG) in providing accurate heart periods for use in heart rate variability (HRV) calculations.
N. Giardino, P. Lehrer, R. Edelberg
semanticscholar   +1 more source

Automated strain-gauge plethysmograph

Medical & Biological Engineering & Computing, 1978
An automatic 2-channel strain-gauge plethysmograph, based on an absolute resistance measurement technique, will be described in the paper. This device is compact, easy to use, provides inherent self-calibration for any gauge and any length of that gauge, automatically performs the measured cycle, and generates annotated graphical printouts of the ...
M. G. Taylor, Brian Coghlan, M. G. Beasley, D. H. King   +3 more
openaire   +3 more sources

Monitoring of ventilation during exercise by a portable respiratory inductive plethysmograph.

Chest, 2005
OBJECTIVES To evaluate the accuracy of a portable respiratory inductive plethysmograph that allows the monitoring of ventilation without airway instrumentation during exercise in unrestrained subjects.
C. Clarenbach, O. Senn, T. Brack, M. Kohler, K. Bloch   +4 more
semanticscholar   +1 more source

A plethysmograph for long-term measurements of ventilation in unrestrained animals.

Journal of applied physiology: respiratory, environmental and exercise physiology, 1978
An apparatus for quantitative measurement of ventilation in unrestrained small animals is described. The subject rests in an environmental chamber, and respiration is indicated by barometric pressure oscillations proportional to tidal volume. The chamber
J. Jacky
semanticscholar   +1 more source

Simple design for an impedance plethysmograph

Medical & Biological Engineering & Computing, 1982
A simple and inexpensive impedance plethysmography has been designed. Complete circuit diagrams are provided to facilitate system replication. The operation of each functional unit in the measurement system is described. Particular attention is given to the demodulation chip, which simplifies circuit design and increases measurement performance.
John G. Webster, D. K. Swanson
openaire   +3 more sources

MEASUREMENT OF AIRWAY RESISTANCE WITH A VOLUME DISPLACEMENT BODY PLETHYSMOGRAPH.

Journal of applied physiology, 1964
Airway resistance was measured with a volume displacement body plethysmograph in 40 normal subjects breathing at their spontaneous breathing rate. The measurements are based on a method designed by DuBois et al.
M. Jaeger, A. Otis
semanticscholar   +1 more source

Automated limb blood flow plethysmograph

American Journal of Physiology-Heart and Circulatory Physiology, 1983
An automated limb blood flow plethysmograph has been developed and interfaced to a PDP-11/60 computer. This system automatically inflates blood pressure cuffs, calibrates strain gauges, provides real-time display of limb circumference changes, and provides digital output of limb blood flow and real-time graphic display of cuff pressure. The system has
S. M. Horvath, R. R. Marcus
openaire   +3 more sources

A Simple Water Plethysmograph with Standardized Sleeves

Scandinavian Journal of Clinical and Laboratory Investigation, 1972
A simple water plethysmograph with a large water surface is described. The plethysmograph includes mainly the bulk of muscles of the forearm. The commercially available standard sleeves fit most limbs well. The plethysmograph with sleeves can be put on a limb within 2–5 minutes.
Steen Levin Nielsen, P. E. Paulev
openaire   +3 more sources

Single-position calibration of the respiratory inductance plethysmograph.

Journal of applied physiology: respiratory, environmental and exercise physiology, 1983
Since we intended to use the respiratory inductance plethysmograph (RIP) to study breathing patterns in a single body position, we developed a method to calibrate the RIP in one position (seated) and verified the stability of this calibration procedure ...
B. Loveridge, P. West, N. Anthonisen, M. Kryger   +3 more
semanticscholar   +1 more source