scholarly journals Responses in Skin Microcirculation to Vestibular Stimulation Before and During Motion Sickness

1997 ◽  
Vol 24 (1) ◽  
pp. 53-57 ◽  
Author(s):  
Ognyan I. Kolev ◽  
Claes Möller ◽  
Gert Nilsson ◽  
Lita Tibbling
Keyword(s):  
Blood Flow ◽  
Motion Sickness ◽  
Skin Blood Flow ◽  
Vertical Axis ◽  
Vestibular Stimulation ◽  
Laser Doppler ◽  
Skin Microcirculation ◽  
Doppler Flowmetry ◽  
The Difference ◽  
Axis Rotation

ABSTRACT:Background:Observation of physiological changes during motion sickness is required to quantify the degree of sickness. The review of the literature does not show unifying results. An objective symptom of motion sickness is facial pallor. It reflects changes in skin microcirculation which have not been measured so far.Methods:Eleven healthy volunteers susceptible to motion sickness were subjected to eccentric vertical axis rotation. The dynamics and the correspondence of the changes in skin blood flow in two segments, forehead and finger, were measured by laser Doppler flowmeter.Results and Conclusions:The difference in the microcirculatory skin blood flow across the phases of motion sickness is significant for the forehead but not for the fingertip; the established dynamics of the forehead blood flow during motion sickness will be of benefit in quantifying the degree of sickness; there is no correlation between the blood flow changes in both measured areas; the rhythmic blood flow fluctuation increases during motion sickness; there is a difference between the blood flow responses to vestibular stimulation before the appearance of motion sickness and in the course of the sickness. Laser Doppler flowmetry is a reliable method in quantifying the degree of motion sickness.

Skin blood flow responses during sleep by laser Doppler flowmetry

1999 ◽  
Vol 53 (2) ◽  
pp. 117-119 ◽  
Author(s):  
Yasufumi Shiihara ◽  
Akihisa Hirota ◽  
Yosinari Kobayashi ◽  
Toshiyuki Nakamiya ◽  
Masahisa Kodama
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Skin Blood Flow ◽  
Laser Doppler ◽  
Doppler Flowmetry

Skin blood flow during acute stress in elderly essential hypertensive patients -A laser doppler flowmetry study-

1998 ◽  
Vol 5 ◽  
pp. 224
Author(s):  
H. Mitsubayashi ◽  
M. Watanabe ◽  
H. Kawamura ◽  
T. Inoue ◽  
T. Suzuki ◽  
...  
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Skin Blood Flow ◽  
Acute Stress ◽  
Laser Doppler ◽  
Doppler Flowmetry ◽  
Hypertensive Patients

Evaluation of stellate ganglion block on auricular skin blood flow by laser-doppler flowmetry

1995 ◽  
Vol 56 (1-2) ◽  
pp. 135-136
Author(s):  
Kenji Imai ◽  
Keisou Ishimaru ◽  
Masahiro Iwa ◽  
Toshikatsu Kitade ◽  
Sadayuki Sasaki ◽  
...  
Keyword(s):  
Blood Flow ◽  
Laser Doppler Flowmetry ◽  
Skin Blood Flow ◽  
Stellate Ganglion ◽  
Stellate Ganglion Block ◽  
Laser Doppler ◽  
Ganglion Block ◽  
Doppler Flowmetry

Reflex Sympathetic Dystrophy: Result of Autonomic Denervation?

1994 ◽  
Vol 87 (6) ◽  
pp. 663-669 ◽  
Author(s):  
H. A. J. M. Kurvers ◽  
M. J. H. M. Jacobs ◽  
R. J. Beuk ◽  
F. A. J. M. Van den Wildenberg ◽  
P. J. E. H. M. Kitslaar ◽  
...  
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Reflex Sympathetic Dystrophy ◽  
Stage I ◽  
Sympathetic Denervation ◽  
Stage Iii ◽  
Cold Sensation ◽  
Skin Microcirculation ◽  
Doppler Flowmetry ◽  
Sympathetic Dysfunction

1. To investigate the nature of sympathetic dysfunction in the pathogenesis of reflex sympathetic dystrophy, the microcirculatory vasoconstrictive responses to dependency were investigated in the skin of the hand of 76 reflex sympathetic dystrophy patients with unilateral disease by means of laser Doppler flowmetry (in perfusion units) and capillary microscopy. The patients were divided into three stages according to their perception of skin temperature (stage I in the case of a stationary warmth sensation, stage II in the case of an intermittent warmth and cold sensation, and stage III in the case of a stationary cold sensation). The vasoconstrictive responses were induced by lowering of the affected hand. 2. As compared to controls, the mainly sympathetically mediated vasoconstrictive response at thermoregulatory level of the skin microcirculation, as measured by laser Doppler flowmetry, was attenuated at stage I (1.82 versus 1.41, P < 0.05), stage II (1.82 versus 1.09, P < 0.0001) and stage III (1.82 versus 1.14, P < 0.01), suggesting the involvement of sympathetic denervation at all stages of the reflex sympathetic dystrophy syndrome. This sympathetic denervation may also account for the observed increase in thermoregulatory skin blood flow at stage I as compared to controls (152 versus 81, P < 0.01). 3. Since sympathetic denervation has been reported to cause increased sensitivity of vascular structures to catecholamines, the decrease in thermoregulatory skin blood flow at stages II (54 versus 81, P < 0.05) and III (31 versus 81, P < 0.05), both as compared to controls, may result from hypersensitivity to catecholamines of skin microvessels. 4. The sympathetically independent vasoconstrictive response at the nutritive level of skin microcirculation, as measured by capillary microscopy, was impaired only at stage III as compared to controls (1.04 versus 2.06, P < 0.05). This divergence in microvascular reactivity upon dependency of the nutritive and thermoregulatory subsystems also supports the hypothesis of sympathetic dysfunction. 5. The disturbed vasoconstrictive responses to dependency may give rise to raised capillary pressures, contributing to the formation of oedema. 6. These findings suggest that sympathetic denervation and consequent hypersensitivity to catecholamines play an important role in the pathophysiology of reflex sympathetic dystrophy.

A new technique to map vulva microcirculation using laser Doppler perfusion imager

2003 ◽  
Vol 13 (6) ◽  
pp. 812-818
Author(s):  
J. Saravanamuthu ◽  
A. M. Seifalian ◽  
W. M. Reid ◽  
A. B. Maclean
Keyword(s):  
Blood Flow ◽  
Skin Blood Flow ◽  
Lichen Sclerosus ◽  
Tissue Perfusion ◽  
Laser Doppler ◽  
The Novel ◽  
Doppler Flowmetry ◽  
Uninvolved Skin ◽  
A New Technique ◽  
First Time

The location of the vulva has had limited technologic progress in the assessment of the skin microcirculation and its application to clinical practice. Our group previously demonstrated increased perfusion in vulvar cancer compared to adjacent uninvolved skin with the laser Doppler flowmetry (LDF). The LDF is severely limited by its low spatial resolution (∼1 mm2) and pressure involved in positioning of the probe, which may affect value of the underlying tissue perfusion. Topographic perfusion mapping of the whole vulvar skin using LDF is also time consuming and is not clinically practical. We describe for the first time the application of the novel laser Doppler perfusion imager (LDPI) to map vulvar skin blood flow and give example in two cases with well-defined vulvar pathology—psoriasis and lichen sclerosus with invasive neoplasia—and discuss the potential of LDPI to study vulvar skin blood flow.

Sign in / Sign up

Export Citation Format

Share Document