ALAN ARAUJO VIEIRA

@uff.br

Associate Professor of Maternal and Child Department of the Fluminense Federal University
Fluminense Federal University

ALAN ARAUJO VIEIRA


            Download Compact PDF  
https://researchid.co/alanvieira

EDUCATION

Graduated in medicine from the Fluminense Federal University, specialization in pediatrics at the Antônio Pedro University Hospital, specialization in neonatology at the Perinatal Clinic, Title of specialist in Pediatrics, Neonatology and Pediatric Intensive Care.
Master's degree and PhD degree obtained at FIOCRUZ - Instituto Fernandez Figueira.

RESEARCH, TEACHING, or OTHER INTERESTS

Medicine, Pediatrics, Perinatology and Child Health
20

Scopus Publications

Scopus Publications

  • Immediate effect of food intake by the nursing mother on the macronutrient content of colostrum
    Regina C.F.A. Nascimento, Virgínia G.A. Hochman, Camila B.M. da Silva, Bernardo V. do Valle, Yasmin N.di V. do Amaral, et al.
    Jornal De Pediatria, 2025
  • Comparison of electrical bioimpedance in newborns with electrodes positioned on the right and left sides of the body
    Thatyana Ribeiro Medeiros, Camila Barros Melgaço da Silva, Flávia Nunes Benicio de Souza, Hannah Schmidel Kautsky, Luana Martins de Oliveira, et al.
    Jornal De Pediatria, 2025
  • Relationship Between Maternal Age and Macronutrient Content of Colostrum
    Virginia Gontijo Abreu Hochman, Regina Celia Fernandes de Abreu Nascimento, Camila Barros Melgaço da Silva, Pedro Noguchi Aragão Quinderé, Raquel Ximenes Melo, et al.
    Journal of Human Lactation, 2024
    Background: Little is known about the relationship between maternal age and the macronutrient content of colostrum. Research Aims: This study aimed to evaluate the relationship between maternal age and human milk macronutrient content by comparing the concentrations of lactose, proteins, and lipids in the colostrum of women with younger, moderate, and advanced maternal age. Methods: An observational, cross-sectional study was designed to compare the macronutrient concentrations in the colostrum of women aged < 20 years, 20 to 34 years, and > 34 years (younger, moderate, and advanced maternal age, respectively; n = 33 per group). For each participant, 3 ml of colostrum was collected by manual extraction from the right breast at 10 am, 39–48 hr after delivery, and analyzed using a Miris Human Milk Analyzer. Macronutrient concentrations were compared between the groups using analysis of variance. P < 0.05 was considered significant. Results: Mothers with moderate maternal age had a higher colostrum lipid concentration than those with younger or advanced maternal age (2.3 mg, SD = 1.4 mg vs. 1.5 mg, SD = 1.0 mg vs. 1.6 mg, SD = 0.9 mg, respectively; p = 0.007). Lactose and protein contents in the analyzed samples did not differ among the three study groups. Conclusion: This study lends support to the potential variation of lipids in colostrum by maternal age and suggests individual adaptation to the nutritional components of milk to the needs of the infant may be beneficial.
  • Evaluation of the bioimpedance technique in newborns with a focus on electrode positioning: A prospective, randomized, crossover study
    Luana F. M. Toledo, Thatyana R. Medeiros, Alan A. Vieira, Luis Guillermo Coca Velarde
    Nutrition in Clinical Practice, 2022
    BACKGROUND Bioelectrical impedance analysis (BIA) is a good alternative for assessing total body water in newborns. However, the lack of standardization of the method for its use in the neonatal population raises doubts about its reliability and external validation. OBJECTIVE To compare resistance (R) and reactance (Xc) values measured by BIA with electrodes placed in the anatomical position and with electrodes placed at 5-cm intervals. METHOD Prospective, randomized, crossover study, in which R and Xc values were measured using monofrequency BIA. The choice of the first position of the electrodes to be analyzed in each NB was performed by a simple randomization, and subsequent measurements were performed in rapid succession. The calculated sample size was 203 evaluations. The paired t test was used to compare the means of R and Xc, and the Bland-Altman plot and linear regression were used to analyze how much the measured values were influenced by the electrode position. RESULTS Significant differences were found in the R (855.25 ± 147.79 vs 618.95 ± 93.28 Ω) and Xc (50.94 ± 17.34 vs 39.76 ± 18.35 Ω) values measured with electrodes in the anatomical position and at 5-cm intervals, respectively. The electrodes in the anatomical position produced R and Xc values 37.7% and 16.6%, respectively, higher on average when compared with 5-cm intervals. CONCLUSIONS The distance between the electrodes influences the measurement of R and Xc by BIA. These results highlight the importance of defining a standard for the placement of electrodes in newborns for the use of these measures in neonatal clinical practice.
  • ROP screening with the Pictor Plus camera: a telemedicine solution for developing countries
    Viviane Lanzelotte, Alan Araujo Vieira, Ana Beatriz Monteiro Fonseca, José Eduardo da Silva, Bárbara Gonet, et al.
    Journal of AAPOS, 2022
  • Sacrococcygeal teratoma: evaluation of its approach, treatment and follow-up in two reference children cancer centers in Brazil / Rio de Janeiro
    VANESSA DO NASCIMENTO SANTOS, SIMONE DE OLIVEIRA COELHO, ALAN ARAUJO VIEIRA
    Revista do Colegio Brasileiro De Cirurgioes, 2022
    Introduction: sacrococcygeal teratoma (TSC) is the most common tumor of the neonatal period. Alphafetoprotein is an important tumor marker and is used in the follow-up period as a marker of malignancy. The complete surgical resection of the tumor associated with coccygectomy is the standard treatment and chemotherapy in different stages are necessary. Follow-up consists of serial exam: tumor markers, imaging searching to possible metastasis sites, in addition to a complete physical examination. Methodology: a descriptive, retrospective, study was carried out by analyzing a chart of 25 patients of two different reference children cancer center; with TSC in the State of Rio de Janeiro from 2004 to 2019. The clinical and epidemiological data collected were described and a comparison was made between these two centers studied. Results: the sociodemographic characteristics found were similar to those described in the medical literature. Data related to treatment and follow-up, such as the use of chemotherapy, use of specific imaging tests, digital rectal examination, and outpatient follow-up, differed between the two centers studied. There was a 25% loss of follow-up. Conclusion: the characteristic of being a non-cancer center can interfere with the full application of the current protocol for the treatment of sacrococcygeal teratoma. The knowledge of the data of the studied cases can allow the optimization of the approach of the patients with this pathology and generate discussions about the integral application of the specific therapeutic protocol in the medical centers that are qualified for such treatment.
  • Influence of different breast expression techniques on human colostrum macronutrient concentrations
    Camila Barros Melgaço da Silva, Bernardo Vicari do Valle, Úrsula Medeiros Araújo de Matos, Yasmin Notarbartolo di Villarosa do Amaral, Maria Elisabeth Lopes Moreira, et al.
    Journal of Perinatology, 2021
  • Interference of heart and transcutaneous oxygen monitoring in the measurement of bioelectrical impedance analysis in preterm newborns
    Viviane C. Comym, Yuri S. Macedu, Eduardo K.P.B. Neves, Arnaldo C. Bueno, Herminia C. Fernandez, et al.
    Jornal De Pediatria, 2016
  • Correlation between antenatal corticosteroid therapy, resuscitation and mortality in very low birth weight infants
    Sayonara Drummond, Thaís Silva Souza, Fernanda Goulart de Lima, Alan Araújo Vieira
    Revista Brasileira De Ginecologia E Obstetricia, 2014
    PURPOSE To evaluate the correlation between the use of antenatal corticosteroid therapy (AC), the frequency of resuscitation in delivery room and mortality of newborn infants under 1,500 g and gestational age less than or equal to 34 weeks. METHODS A cohort study was conducted on all newborn infants under 1,500 g and with a gestational age less than or equal to 34 weeks admitted at the neonatal ICU between January 2006 and December 2011. Newborns who had congenital anomalies, genetic syndromes, congenital infections and those who were transferred to or came from other institutions were excluded. The studied infants were divided into 2 groups: those who received (n=182) and those who did not receive (n=38) AC. The main outcomes studied were the necessity of neonatal resuscitation, the presence of the main neonatal diseases and mortality during hospitalization. The means of the variables were compared using Student's t-test or non-parametric test and frequencies were compared by χ2test with Fisher's correction. The variables that presented difference between groups were assessed by logistic regression. The Statistical Package for the Social Sciences (SPSS) 16.0 was used and the significance level was set at 0.05. RESULTS In this study, 220 patients were evaluated. The groups were similar concerning birth weight, gestational age and the presence of the main neonatal morbidity during hospitalization. The infants who received antenatal corticosteroids showed lower mortality (OR=3.0; 95%CI 1.4-6.5) and required less resuscitation (OR=2.4; 95%CI 1.1-5.0). Besides, they required less advanced resuscitation procedures, such as tracheal cannula (OR=3.7; 95%CI 1.7-7.6), cardiac massage (OR=5.7; 95%CI 2.0-16.5) and medications (OR=8.9; 95%CI 2.0-39.4). CONCLUSIONS The use of antenatal corticosteroids reduced the need for resuscitation in delivery room, especially advanced procedures, and reduced the mortality in the studied groups.
  • Evaluation of perinatal factors that influence the incidence of necrotizing enterocolitis in very low birth weight infants
    Alan Araújo Vieira, Bruna Bianca Lopes David, Renata Rodrigues Garcia Lino, Luciana de Barros Duarte, Arnaldo Costa Bueno
    Revista Brasileira De Ginecologia E Obstetricia, 2013
    PURPOSE To evaluate the perinatal factors that influence the incidence of necrotizing enterocolitis (NEC) in newborns infants (NBI) weighing less than 1,500 g. METHODS A prospective study that analyzed all infants with birth weight (BW) less than 1,500 g born between January 2006 to December 2010 (n=183). They were divided into two groups, i.e. infants diagnosed with NEC (n=18) and infants without a diagnosis of NEC (n=165), which were compared in terms of perinatal factors that could influence the incidence of NEC. Mean data were compared by Student's t-test or nonparametric tests and percentages of categorical variables were compared by the χ² test. When the variables showed differences between groups, they were analyzed using logistic regression with the dependent variable as the presence of NEC. The statistical package used was SPSS 16.0 for Windows. RESULTS The two groups were similar in terms of most of the clinical and demographic neonatal and maternal data, except for the presence of preeclampsia (PE), which was higher in patients whose children developed NEC (61.1 versus 35,6%). The presence of PE increased the chance of occurrence of NEC by 2.84 times (95%CI 1.0 - 7.7). CONCLUSION The only factor that can interfere with the incidence of NEC in infants of very low birth weight was the presence of PE. Awareness of this fact can guide the perinatal team in providing more judicious care regarding the prevention of NEC in this specific population.
  • Implementation of a protocol proposed by the Brazilian National Health Surveillance Agency for antibiotic use in very low birth weight infants
    Maria Cristina F. Guedes Pinto, Arnaldo C. Bueno, Alan A. Vieira
    Jornal De Pediatria, 2013
  • The correlation between plasma lactate concentrations and early neonatal mortality
    Herminia Guimarães Couto Fernandez, Alan Araújo Vieira, Adauto Dutra Moraes Barbosa
    Revista Brasileira De Terapia Intensiva, 2012
  • Analysis of the influence of pasteurization, freezing/thawing, and offer processes on human milk's macronutrient concentrations
    Alan Araujo Vieira, Fernanda Valente Mendes Soares, Hellen Porto Pimenta, Andrea Dunshee Abranches, Maria Elisabeth Lopes Moreira
    Early Human Development, 2011
  • Evaluation of the neonatal sepsis diagnosis: Use of clinical and laboratory parameters as diagnosis factors
    Revista Da Escola De Enfermagem, 2011
  • Surgical mitral valve repair in children with rheumatic fever
    Andréa Rocha e Silva, Gesmar Volga Haddad Herdy, Alan Araujo Vieira, Luiz Carlos Simões
    Arquivos Brasileiros De Cardiologia, 2009
  • Medication errors in a neonatal intensive care unit
    Renata Bandeira de Melo Escovedo Lerner, Manoel de Carvalho, Alan Araú, jo Vieira, Jose Maria de Andrade Lopes, et al.
    Jornal De Pediatria, 2008
  • Determining the least time required for measuring energy expenditure in premature neonates
    Maria E.L. Moreira, Alan A. Vieira, Fernanda V. Mendes Soares, Renata Bastos Lopes, Plinio Gomes, et al.
    Journal of Perinatal Medicine, 2007
  • Evaluation of the nutritional status of preterm newborns [2] (multiple letters)
    Jornal De Pediatria, 2005
  • Evaluation of the nutritional status at 40 weeks corrected gestational age in a cohort of very low birth weight infants
    Nicole M. Gianini, Alan A. Vieira, Maria Elizabeth Lopes Moreira
    Jornal De Pediatria, 2005
  • Assessment of the energy content of human milk administered to very low birth weight infants
    Alan A. Vieira, Maria Elizabeth Lopes Moreira, Adriana D. Rocha, Hellen P. Pimenta, Sabrina L. Lucena
    Jornal De Pediatria, 2004