FABIO MARCON ALFIERI
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- Evaluation of body temperature in individuals with stroke(2017) ALFIERI, Fabio Marcon; MASSARO, Ayrton Roberto; FILIPPO, Thais Raquel; PORTES, Leslie Andrews; BATTISTELLA, Linamara RizzoBACKGROUND: A stroke can cause alterations in thermal sensitivity. OBJECTIVE: to verify the conditions of body temperature in hemiplegic patients after stroke as compared to healthy individuals, as well as establish relations between thermal sensitivity and gender, age, Body Mass Index ( BMI), plegic side, time after stroke, reports of thermal alterations and the motricity of patients with stroke sequelae. METHODS: This cross-sectional study included 100 patients ( 55.6 +/- 13 years) with ischemic or hemorrhagic stroke sequelae with unilateral hemiparesis and thirty healthy subjects ( 55 +/- 12.9 years). Individuals with nervous peripheral lesions, diabetes, peripheral vascular diseases or tumors were not included in this study. The volunteers underwent axillary temperature evaluations with the use of a cutaneous thermometer and evaluations of cutaneous temperature of hands and feet as measured by infrared thermography captured by an infrared sensor (ThermaCAM(TM) SC 500-FLIR Systems). The mean temperature (degrees C) was analyzed with the SigmaStat 3.5 statistical package. RESULTS: The results have shown that healthy individuals have similar temperatures on either side of the body. The hemiplegic subjects presented a lower temperature on the plegic side and compared to the healthy subjects, both feet of the hemiparetic individuals were colder. The results have also shown that age, body mass index, and the time after stroke have no influence on the alterations in temperature. Regarding the paretic side, individuals with hemiplegia on the right side ( right foot) had a lower temperature than those affected on the left side. Motricity was not related to any difference in temperature between the limbs and the reports of temperature differences had no relation with the actual differences found in the study. CONCLUSIONS: Healthy individuals have temperature symmetry between between sides of the body, while individuals with stroke sequelae present lower temperature in the paretic side, especially on their feet.
- Body temperature of healthy men evaluated by thermography: A study of reproducibility(2018) ALFIERI, Fabio Marcon; BATTISTELLA, Linamara RizzoBACKGROUND: Thermography is a safe, painless, and efficient method for checking the temperature of the skin. OBJECTIVE: Was to assess the pattern of skin temperature of healthy men, as well as to verify the reproducibility of the method. METHODS: This cross-sectional observational study was conducted with 30 men evaluated by thermography in two moments by using an infrared camera (FLIR +T650SC((R))). The skin temperature of 24 regions of interest (ROI) was measured. RESULTS: The mean difference in temperature of 10 ROIs in the two evaluations was not statistically significant. The comparisons of the triangle Tsk between the right and left sides by the two evaluations showed no differences. The intra-class correlation coefficient (ICC) between the two moments of evaluation were statistically significant, where the dorsal measurements (Left forearm and Right dorsal arm) showed poor correlations and the others ranged from moderate to strong. Greater reproducibility was confirmed for ventral and dorsal hand ROIs; however, they presented the highest coefficient of variation (9% and 8%).Conclusion: There is a similarity between the temperatures of the ROIs and the reproducibility in 22 of the 24 ROIs varies from moderate to strong, showing that thermography is a reproducible method in healthy men.
article 0 Citação(ões) na Scopus Immediate effect of a single cycle ergometry session on skin temperature of women with and without varicose veins: A case report(2021) DIAS, C. da Silva; ALFIERI, F. M.; ANDRADE, V. C. S. de; BATTISTELLA, L. R.BACKGROUND: Vascular diseases such as varicose veins can affect the distribution of skin temperature, and thermography can be a useful way to capture this. The aim of this case report is to show the changes in skin temperature induced by bicycling and to evaluate the thermal symmetry before and after physical activity in two women, one with and the other without varicose veins. MATERIALS AND METHODS: Two women, one with varicose veins (subject 1) and a healthy volunteer (subject 2), were examined before and after a single session of one-hour lasting cycle ergometry. They were assessed by a FLIR T650sc infrared camera before, immediately after and 15 minutes after the session. Total body thermograms were taken with subjects 4 meters away from the camera, in anterior and posterior views, and 6 regions of interest (ROIs) were defined. RESULTS: Subject 2, who used to exercise regularly, exhibited similar temperature values in the evaluated ROIs of the right and left body sides. In the subject 2, a more pronounced thermal symmetry was observed than in the subject 1 at all examination moments. In both individuals, the degree of thermal symmetry was not affected by cycling. CONCLUSION: Varicose veins are associated with moderate thermal asymmetry, while the lower extremities of a healthy person appeared thermally symmetric. Both distribution patterns of skin temperature were not affected by single session of cycling exercise. © 2021 European Association of Thermology. All rights reserved.article 0 Citação(ões) na Scopus The concordance study of the portable camera FLIR C5 for detecting asymmetry of skin temperature in patients with stroke sequelae(2023) ALFIERI, F. M.; SANTOS, A. C. A. dos; DIAS, C. da Silva; BATTISTELLA, L. R.BACKGROUND: Low-cost portable infrared cameras are increasingly used for health assessments, especially for investigating the skin temperature of the whole body. However, some of these devices have not yet been tested for agreement with high-resolution cameras. Therefore, the objective of this study was to test the agreement of FLIR C5, a portable infrared thermographic camera, compared to the FLIR T650sc, a high-quality and high-resolution thermographic device, for detecting thermal asymmetry between both sides of the body of patients with motor sequelae after stroke. MATERIALS AND METHODS: This is an observational and cross-sectional study conducted in a physical rehabilitation facility with 14 patients with stroke sequelae. Participants had their temperature simultaneously measured by FLIR T650sc and FLIR C5 infrared thermography cameras and analyzed with the software FLIR Tools®. The temperature difference of each ROI measured by both cameras was compared with Lin's Concordance Correlation Coefficient (rho or ρc) and Bland Altman the limits of agreement (LOA). RESULTS: the temperatures measured by FLIR C5 were lower than those measured by FLIR T650sc, regardless of the region of interest or side (-0.65, SD 1.44). We observed that the general concordance was classified as adequate to excellent (ρc=0.859; 95%CI 0.817-0.901; p<0.001) and that the forearm and leg in the posterior view presented the sites with the best associations between the temperature readings of FLIR C5 and FLIR T650sc. CONCLUSIONS: The temperature asymmetry usually found among patients with stroke sequelae may be assessed by the portable infrared thermographic camera FLIR C5, given its suitable concordance with FLIR T650sc.article 0 Citação(ões) na Scopus Skin surface temperature and pain tolerance threshold in young and elderly individuals(2023) VITORINO, C. F.; OLIVEIRA, N. C. de; ALFIERI, F. M.BACKGROUND: Studies involving the thermography and algometry have been shown effective for the evaluation and diagnosis of painful processes, bringing relevant information about the physiology of aging. This study aimed at comparing skin surface temperature and pressure pain threshold (PPT) in young and elderly individuals, as well as to investigate associations between body temperature and PPT in these groups. MATERIALS AND METHODS: This is an observational cross-sectional study in which 53 healthy volunteers participated. They were subjected to thermography (thigh and lumbar spine) and PPT evaluations (vastus medialis, vastus lateralis, and lumbar spine). Data were analyzed with descriptive statistics and correlation coefficients in SPSS v.26. RESULTS: Young individuals exhibited higher values of body temperature in the left thigh (30.0°C vs. 26.8°C), right thigh (29.9°C vs. 26.8°C) and lumbar spine (32.0°C vs. 31.9°C) when compared to the elderly. PPT did not differ between groups. No associations were observed between surface temperature and PPT. CONCLUSION: Young individuals presented higher temperature values, but no differences were found in pain tolerance. Surface temperature was not associated to PPT in either group.article 3 Citação(ões) na Scopus Whole-body thermographic assessment of patients with stroke sequelae who report temperature differences between the sides(2022) DIAS, C. da Silva; ALFIERI, F. M.; SANTOS, A. C. A. dos; BATTISTELLA, L. R.BACKGROUND: Among the several changes caused by Cerebral Vascular Accident (CVA or stroke), alterations in skin temperature sensation, especially on the lower extremities, may be onset. Therefore, investigating skin temperature of the whole body of these patients with infra-red thermography might be meaningful. The objective of this study was to assess the whole-body temperature distribution of patients with stroke sequelae who report temperature differences between the sides of the body. MATERIALS AND METHODS: This is an observational and cross-sectional study with 43 patients with stroke sequelae conducted in a physical rehabilitation facility. Participants had their temperature measured by FLIR T650sc infrared thermography camera, and the thermographic images were analyzed with the software FLIR Tools®. Statistical analysis was conducted with Student's T-test for paired samples, and statistical significance was considered if p<0.005, after single-step correction for multiple comparisons. RESULTS: Significant temperature differences were found between both sides of the body in all Regions of Interest (ROIs), especially in the distal areas, as the average temperature difference was as significant as 0.7ºC. CONCLUSIONS: Patients with stroke sequelae who report temperature differences between the sides of the body have lower temperatures on the plegic limb than the contralateral limb. © 2022 European Association of Thermology. All rights reserved.- Body temperature and esthesia in individuals with stroke(2021) DIAS, Caren da Silva; ALFIERI, Fabio Marcon; SANTOS, Artur Cesar Aquino dos; BATTISTELLA, Linamara RizzoPatients with sequelae of stroke commonly report somatosensory losses. It is believed that body temperature may be associated with tactile sensibility and sensorimotor recovery of these patients. Demonstrate the associations among tactile sensibility, cutaneous temperature, subjective temperature perception, and sensorimotor recovery of patients with stroke sequelae. 86 patients with stroke sequelae were included. Patients had standardized regions of interest (ROIs) assessed with infrared thermography (FLIR T650SC) and monofilaments esthesiometry, and global motor recovery was evaluated with Fugl-Meyer Assessment (FMA). The presence of self-reported perception of temperature difference was used to divide the participants into two groups of 43 patients, and correlation tests were applied to establish correlations among variables. There is no clinically relevant association between tactile sensibility and cutaneous temperature of the foot, regardless of the subjective sensation of temperature changes. Sensorimotor recovery evaluated by FMA is associated with the difference of sensibility between both sides of the body (p < 0.001), as well as with the difference of tactile sensibility (p < 0.001). A clinically significant association between the difference of cutaneous temperature and tactile sensibility was not found, regardless of the presence or absence of subjective perception of such temperature difference. However, sensorimotor recovery is correlated with cutaneous temperature differences and tactile sensibility.