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1.
IJMS-Iranian Journal of Medical Sciences. 2016; 41 (1): 48-52
em Inglês | IMEMR | ID: emr-175766

RESUMO

It is more than a decade since scientists are making use of sympathetic skin response [SSR] as a clinical and research method to evaluate sympathetic nervous system. A major portion of the efferent pathway of this response is composed of non-myelinated nerves. Thus, the latency of the response may be significantly different in normal individuals with different height and limb lengths. This study was designed to investigate the effect of these parameters on the SSR results. We measured the height and limb length of 65 normal individuals with different heights [divided into 3 groups of height /= 170 cm]. The participants had neither peripheral nor central neuropathy. They also had none of the exclusion criteria. Then, they underwent SSR testing of both palms and soles. The correlation between the height and limb length in relation to SSR parameters [latency and amplitude] was analyzed statistically by Pearson's correlation. No significant correlation was detected between the height and limb length and the SSR amplitude. However, the results showed significant correlation between SSR latency recorded from all four sites [both palms and soles] and the height of participants. Furthermore, there was a significant correlation between SSR latency recorded from any limb and the length of that limb. Regarding the significant effect of the height and limb length on the SSR latency, both the height and limb length should be considered when interpreting the results of SSR


Assuntos
Humanos , Estatura , Extremidades , Resposta Galvânica da Pele , Pele
2.
IJCBNM-International Journal of Community Based Nursing and Midwifery. 2015; 3 (3): 227-233
em Inglês | IMEMR | ID: emr-165605

RESUMO

Osteoporosis is a common disease characterized by reduction in bone mass, due to depletion of calcium and bone protein. A pivotal role of the sympathetic nervous system in bone remodeling has been considered. On the other hand, elevated central sympathetic activation in postmenopausal women is involved in the creation of vasomotor symptoms. Also, sympathetic skin response [SSR] has been performed for evaluation of the peripheral and central autonomic nervous system dysfunctions. Therefore, to determine the association of the autonomic nervous system and osteoporosis, we evaluated the correlation between the bone mineral density [BMD] with the frequency of vasomotor symptoms and also sympathetic skin responses. This is a cross-sectional study in which thirty-three postmenopausal osteoporosis women, as the case group, and 31 age-matched postmenopausal women with normal BMD, as the control group, were included in our study. To evaluate the autonomic function, we assessed the frequency of vasomotor symptoms with a questionnaire and performed SSR test for the two groups. According to the parametrical or the nonparametrical distribution of the data, Independent Samples t-test or Mann Whitney test, respectively, were used to compare group differences. The onset latencies of SSR recorded from both hands and feet were significantly prolonged in the case group compared with the control group [P<0.001]. Amplitudes of SSR in the case group were significantly less than those of the control group [P<0.001]. The postmenopausal osteoporotic women reported a significantly higher frequency of hot flashes and night sweats when compared with non-osteoporotic women [P<0.001]. The higher frequency of vasomotor symptoms and impaired sympathetic skin responses in postmenopausal osteoporotic women suggests a role of autonomic dysfunction in osteoporosis

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