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Análise do perfil somatossensorial de adultos saudáveis: um estudo transversal exploratório
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Abstract(s)
Introdução: O quantitative sensory testing (QST) define-se como um conjunto de métodos não invasivos, destinados a avaliar o sistema somatossensorial, através de respostas sensoriais e de
perceção da dor a estímulos mecânicos e térmicos. Tem o propósito de caracterizar a função e a
disfunção somatossensorial, identificando anormalidades sensoriais e hiperalgesia sensorial em
utentes. O perfil somatossensorial proveniente de respostas ao QST dentro de um grupo de pessoas
saudáveis não é totalmente conhecido, sendo que a criação de uma base de dados normativa com
os valores de referência do perfil somatossensorial em indivíduos saudáveis em Portugal é
importante para que se possa compreender, prevenir e intervir em condições de dor.
Objetivo: Analisar e contribuir para se estabelecer valores de referência do perfil somatossensorial
de indivíduos saudáveis em Portugal, através do instrumento QST. Secundariamente, analisaram se as potenciais diferenças nos vários parâmetros somatossensoriais entre subgrupos de
participantes e regiões de medição
Metodologia: Realizou-se um estudo observacional do tipo transversal com uma amostra de 18
indivíduos saudáveis. Foram avaliados indicadores clínicos, psicossociais e somatossensoriais. A
realização da bateria de testes somatossensoriais foi aplicada de acordo com a metodologia DFNS
e consistiu na avaliação em 3 locais anatómicos: região lombar, região tenar e pé. Os testes
selecionados do QST pertencem a um protocolo de avaliação para a região lombar, composto por
6 dos seus 13 parâmetros: CDT, WDT, CPT, HPT, WUR e PPT.
Resultados: Nos parâmetros avaliados na região lombar, observaram-se diferenças
estatisticamente significativas na sensibilidade de dor à pressão entre homens e mulheres (p=0,021)
e entre quem realiza ou não desporto (p=0,035). Na região do pé, observou-se uma diferença
estatisticamente significativa no limiar de dor ao frio entre quem realiza ou não desporto (p=0,014).
Verificaram-se diferenças estatisticamente significativas para o parâmetro CDT entre a avaliação
do CDTmão e CDTpé (p=0,001). Houve diferenças estatisticamente significativas entre a avaliação
do WDTmão e WDTlombar (p=0,001), e entre o WDTmão e WDTpé (p=0,001). No parâmetro WUR
houve diferenças estatisticamente significativas entre WURmão e WURlombar (p=0,006). Nas
correlações houve diferenças estatisticamente significativas entre múltiplos pares de variáveis.
Conclusão: Foram estabelecidos valores médios do perfil somatossensorial de adultos saudáveis.
Os resultados sugerem que os homens aparentam tolerar mais o estímulo de pressão na região
lombar em comparação com as mulheres, que quem realiza desporto tem tendência a ter menos
tolerância à pressão e ao frio, que não existe influência na presença ou não de dor prévia, e que a
mão aparenta ser o local mais sensível em comparação com a região lombar e pé. Estes resultados
são um ponto de partida para futuros estudos que visem estabelecer valores de referência do perfil
somatossensorial em adultos saudáveis em Portugal.
Introduction: Quantitative sensory testing (QST) is defined as a set of non-invasive methods, designed to evaluate the somatosensory system, through sensory responses and pain perception to mechanical and thermal stimuli. Its purpose is to characterize somatosensory function and dysfunction, identifying sensory abnormalities and sensory hyperalgesia in users. The somatosensory profile resulting from responses to the QST within a group of healthy people is not fully known, and the creation of a normative database with the reference values of the somatosensory profile in healthy individuals in Portugal is important to understand, prevent and intervene in pain conditions. Objective: To analyze and contribute to establishing reference values for the somatosensory profile of healthy individuals in Portugal, using the QST instrument. Secondarily, potential differences in various somatosensory parameters between subgroups of participants and measurement regions were analyzed. Methodology: A cross-sectional observational study was carried out with a sample of 18 healthy individuals. Clinical, psychosocial and somatosensory indicators were evaluated. The battery of somatosensory tests was carried out according to the DFNS methodology and consisted of evaluating 3 anatomical locations: lumbar region, thenar region and foot. The selected QST tests belong to an assessment protocol for the lumbar region, consisting of 6 of its 13 parameters: CDT, WDT, CPT, HPT, WUR and PPT. Results: In the parameters evaluated in the lumbar region, statistically significant differences were observed in pain sensitivity to pressure between men and women (p=0.021) and between those who play sports or not (p=0.035). In the foot region, a statistically significant difference was observed in the cold pain threshold between those who participate in sports and those who do not (p=0.014). There were statistically significant differences for the CDT parameter between the assessment of CDThand and CDTfoot (p=0.001). There were statistically significant differences between the assessment of WDThand and WDTlumbar (p=0.001), and between WDThand and WDTfoot (p=0.001). In the WUR parameter there were statistically significant differences between WURhand and WURlumbar (p=0.006). In the correlations there were statistically significant differences between multiple pairs of variables. Conclusion: Mean values of the somatosensory profile of healthy adults were established. The results suggest that men appear to tolerate more pressure stimulation in the lumbar region compared to women, that those who play sports tend to have less tolerance to pressure and cold, that there is no influence on the presence or absence of previous pain, and that the hand appears to be the most sensitive place compared to the lower back and foot. These results are a starting point for future studies that aim to establish reference values for the somatosensory profile in healthy adults in Portugal.
Introduction: Quantitative sensory testing (QST) is defined as a set of non-invasive methods, designed to evaluate the somatosensory system, through sensory responses and pain perception to mechanical and thermal stimuli. Its purpose is to characterize somatosensory function and dysfunction, identifying sensory abnormalities and sensory hyperalgesia in users. The somatosensory profile resulting from responses to the QST within a group of healthy people is not fully known, and the creation of a normative database with the reference values of the somatosensory profile in healthy individuals in Portugal is important to understand, prevent and intervene in pain conditions. Objective: To analyze and contribute to establishing reference values for the somatosensory profile of healthy individuals in Portugal, using the QST instrument. Secondarily, potential differences in various somatosensory parameters between subgroups of participants and measurement regions were analyzed. Methodology: A cross-sectional observational study was carried out with a sample of 18 healthy individuals. Clinical, psychosocial and somatosensory indicators were evaluated. The battery of somatosensory tests was carried out according to the DFNS methodology and consisted of evaluating 3 anatomical locations: lumbar region, thenar region and foot. The selected QST tests belong to an assessment protocol for the lumbar region, consisting of 6 of its 13 parameters: CDT, WDT, CPT, HPT, WUR and PPT. Results: In the parameters evaluated in the lumbar region, statistically significant differences were observed in pain sensitivity to pressure between men and women (p=0.021) and between those who play sports or not (p=0.035). In the foot region, a statistically significant difference was observed in the cold pain threshold between those who participate in sports and those who do not (p=0.014). There were statistically significant differences for the CDT parameter between the assessment of CDThand and CDTfoot (p=0.001). There were statistically significant differences between the assessment of WDThand and WDTlumbar (p=0.001), and between WDThand and WDTfoot (p=0.001). In the WUR parameter there were statistically significant differences between WURhand and WURlumbar (p=0.006). In the correlations there were statistically significant differences between multiple pairs of variables. Conclusion: Mean values of the somatosensory profile of healthy adults were established. The results suggest that men appear to tolerate more pressure stimulation in the lumbar region compared to women, that those who play sports tend to have less tolerance to pressure and cold, that there is no influence on the presence or absence of previous pain, and that the hand appears to be the most sensitive place compared to the lower back and foot. These results are a starting point for future studies that aim to establish reference values for the somatosensory profile in healthy adults in Portugal.
Description
Keywords
Limiares de Dor à Pressão Limiares de Deteção Térmica Limiares de Dor Térmica Perfil somatossensoria Perfil somatossensoria Pressure Pain Thresholds Quantitative Sensory Test Somatosensory profile Thermal Detection Thresholds Thermal Pain Thresholds