Linear and non-linear analysis of heart rate variability in HIV-positive patients on two different antiretroviral therapy regimens.

BACKGROUND: Cardiac autonomic dysfunction in HIV+ patients on different antiretroviral therapy (ART) regimens has been described. We aimed to characterize parameters of heart rate variability (HRV) and correlate with different classes of ART in HIV+ patients in three experimental conditions: rest, cold face, and tilt tests. METHODS: Cross-sectional study with three groups of age- and gender-matched individuals: group 1, 44 HIV+ patients undergoing combination therapy, with two nucleoside reverse transcriptase inhibitors (NRTI) and one non-nucleoside reverse transcriptase inhibitor (NNRTI); group 2, 42 HIV+ patients using two NRTI and protease inhibitors (PI's); and group 3, 35 healthy volunteers with negative HIV serology (control group). Autonomic function at rest and during cold face- and tilt-tests was assessed through computerized analysis of HRV, via quantification of time- and frequency domains by linear and non-linear parameters in the three groups. RESULTS: Anthropometric and clinical parameters were similar between both HIV groups, except CD4+ T lymphocytes, which were significantly lower in group 2 (p = 0.039). At baseline, time-domain linear HRV parameters, RMSSD and pNN50, and the correlation dimension, a non-linear HRV parameter (p < 0.001; p = 0.018; p = 0.019, respectively), as well as response of RMSSD to cold face test were also lower in the HIV+ group than in the control individuals (p < 0.001), while no differences among groups were detected in HRV parameters during the tilt test. CONCLUSIONS: Despite ART regimens, HIV+ patients presented lower cardiac vagal modulation than controls, whereas no difference was observed among the HIV groups, suggesting that higher cardiovascular risk linked to PIs may be associated with factors other than autonomic dysfunction.

Estudo epidemiológico das queimaduras no Hospital de Clínicas da Universidade Federal do Triângulo Mineiro / Epidemiological study of burns at the Hospital of Clinics, Federal University of the Triângulo Mineiro

Introdução: As queimaduras são um grave problema de saúde pública. O conhecimento dos principais dados epidemiológicos dos pacientes acometidos é de suma importância para a prevenção e instituição do melhor tratamento clínico a esses indivíduos. Objetivou-se realizar um levantamento sobre o perfil epidemiológico das queimaduras, os principais mecanismos envolvidos, tratamentos e desfechos destes casos no Hospital de Clínicas da UFTM. Métodos: Trata-se de um estudo retrospectivo e transversal, das internações por queimadura no HC- UFTM, de janeiro de 2015 a dezembro de 2019. Foram avaliados: gênero, idade, profundidade das queimaduras, localização, etiologia, utilização de opioides, tempo de internação hospitalar, desfecho (alta hospitalar ou óbito) e extensão das áreas queimadas (SCQ%). Resultados: Este estudo foi composto por 138 pacientes, divididos em 3 grupos: grupo 1 (G1), 39 pacientes; o grupo 2 (G2), 89 participantes, dos quais 5 foram a óbito; e o grupo 3 (G3), 10 participantes, sendo que 4 vieram a óbito. Quanto ao mecanismo do trauma, o mais comum foi por escaldadura (17,39%), seguida pela queimadura térmica (13,76%), pelo álcool (8,69%) e queimaduras elétricas (5,79%). Conclusão: Houve uma maior prevalência de queimaduras de segundo grau em pacientes do gênero masculino. O mecanismo de trauma mais prevalente foi escaldadura e a SQC teve média de 23,9%. A face e o pescoço foram os segmentos mais acometidos e 61,59% dos pacientes necessitaram com uso de opioides na internação. Com relação ao desfecho, 91,30% dos pacientes receberam alta hospitalar e 6,52% vieram a óbito, com a maioria dos casos no G2.

Introduction: Burns are a serious public health problem. Knowledge of the main epidemiological data of affected patients is paramount for preventing and establishing the best clinical treatment for these individuals. The objective was to survey the epidemiological profile of burns, the main mechanisms involved, treatments, and outcomes of these cases at the Hospital de Clínicas da UFTM. Methods: This is a retrospective and cross-sectional study of hospitalizations for burns at HC-UFTM from January 2015 to December 2019. Gender, age, depth of burns, location, etiology, use of opioids, hospitalization duration, outcome (hospital discharge or death), and extent of burned areas (EBA%). Results: This study was composed of 138 patients, divided into three groups: group 1 (G1), 39 patients; group 2 (G2), 89 participants, of which 5 died; and group 3 (G3), 10 participants, 4 of whom died. As for the trauma mechanism, the most common was scald (17.39%), followed by thermal burn (13.76%), alcohol (8.69%), and electric burns (5.79%). Conclusion: There was a higher prevalence of second-degree burns in male patients. The most prevalent mechanism of trauma was scald, and the EBA had an average of 23.9%. The face and neck were the most affected segments, and 61.59% of the patients required opioids during hospitalization. Regarding the outcome, 91.30% of patients were discharged from the hospital, and 6.52% died, with most cases in G2.