Can I read Simultaneous Measurements of Finger-tip Temperatures and Blood Perfusion Rates in a Cold Environment on EtoBox?

Simultaneous Measurements of Finger-tip Temperatures and Blood Perfusion Rates in a Cold Environment by A. Shitzer; L.A. Stroschein; M.W. Sharp; R.R. Gonzalez; K.B. Pandolf is a Environmental Science article available to read on EtoBox.

What is Simultaneous Measurements of Finger-tip Temperatures and Blood Perfusion Rates in a Cold Environment about?

Simultaneous measurements of middle finger-tip temperatures and blood perfusion rates were made in hands exposed to 0°C air. Temperatures were measured by a thermocouple disk attached to the nail-bed of the finger. Blood perfusion was monitored by a laser-Doppler velocimeter probe attached to the palmar side of the finger-tip. Seven, 60-80 min long experiments were performed on 6 men. The subjects sat in a comfortable (20-22 C) environment while the test hand was inserted, at about heart level, into a small non-contacting environmental chamber. Results indicated a sharp drop in finger-tip temperature of 10.1 + 2.0 'C during the initial 2 min. The time-lag between the preceding changes in blood perfusion and the ensuing changes in temperatures was in the range of 2-7 (5.86 k 1.73) min. Cold induced vasodilatation was typically effected by triangular-like waves indicating 3 to 20-fold gradual opening-closing changes of the arterial supply of the finger-tip. Average finger-tip temperatures (I 1.8-15.5"C) showed much less variability among the subjects than did average blood perfusion rates (2.8-17.0 mL,.mL;'h-'). Results of this study were compared to an analytical model quantifying f

Who reads Simultaneous Measurements of Finger-tip Temperatures and Blood Perfusion Rates in a Cold Environment?

Author

A. Shitzer; L.A. Stroschein; M.W. Sharp; R.R. Gonzalez; K.B. Pandolf

Publisher

Elsevier Science; Elsevier ; Elsevier Ltd.; Elsevier BV (ISSN 0306-4565)

Published

1997

Language

EN

Field

Environmental Science (Life Sciences)