Publications by authors named "Daniel Lucas Dantas De Freitas"

Osteosarcopenia is a complex geriatric syndrome characterized by the presence of both sarcopenia and osteopenia/osteoporosis. This condition increases rates of disability, falls, fractures, mortality, and mobility impairments in older adults. The purpose of this study was to analyze the Fourier-transform infrared (FTIR) spectroscopy diagnostic power for osteosarcopenia in community-dwelling older women (n = 64; 32 osteosarcopenic and 32 non-osteosarcopenia).

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Article Synopsis
  • The study developed an AI-based predictive length of stay (LOS) score specifically for patients with advanced high-grade serous ovarian cancer following surgery, aiming to improve hospital care efficiency.
  • Machine learning techniques, including artificial neural networks, were applied alongside logistic regression to predict LOS outcomes, yielding high accuracy rates between 70-98% for different prediction scenarios.
  • The research identified key factors influencing LOS, such as surgical complexity and postoperative complications, and showcased a user-friendly interface for clinicians to access these insights, ultimately aiding in the analysis of factors prolonging hospital stays.
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Achieving complete surgical cytoreduction in advanced stage high grade serous ovarian cancer (HGSOC) patients warrants an availability of Critical Care Unit (CCU) beds. Machine Learning (ML) could be helpful in monitoring CCU admissions to improve standards of care. We aimed to improve the accuracy of predicting CCU admission in HGSOC patients by ML algorithms and developed an ML-based predictive score.

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Gestational diabetes mellitus (GDM) is a hyperglycaemic imbalance first recognized during pregnancy, and affects up to 22% of pregnancies worldwide, bringing negative maternal-fetal consequences in the short- and long-term. In order to better characterize GDM in pregnant women, 100 blood plasma samples (50 GDM and 50 healthy pregnant control group) were submitted Attenuated Total Reflection Fourier-transform infrared (ATR-FTIR) spectroscopy, using chemometric approaches, including feature selection algorithms associated with discriminant analysis, such as Linear Discriminant Analysis (LDA), Quadratic Discriminant Analysis (QDA) and Support Vector Machines (SVM), analyzed in the biofingerprint region between 1800 and 900 cm followed by Savitzky-Golay smoothing, baseline correction and normalization to Amide-I band (~ 1650 cm). An initial exploratory analysis of the data by Principal Component Analysis (PCA) showed a separation tendency between the two groups, which were then classified by supervised algorithms.

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