Kein

Η γαστρική παράκαμψη κατά Roux en Y αποτελεί την πλέον δημοφιλή επέμβαση αντιμετώπισης της νοσογόνου παχυσαρκίας. Στη σύγχρονη εποχή, πάνω από τις μισές επεμβάσεις γαστρικής παράκαμψης διενεργούνται λαπαροσκοπικά. Σκοπός της παρούσας μελέτης είναι η σύγκριση μεταξύ της ανοικτής και της λαπαροσκοπικής τεχνικής, σε χρονικό ορίζοντα παρακολούθησης 5 ετών από την επέμβαση. Μέθοδος: Οι πρώτοι 60 ασθενείς, που υποβλήθηκαν σε ανοικτή γαστρική παράκαμψη και οι αντίστοιχοι 60 ασθενείς, που υποβλήθηκαν σε λαπαροσκοπική επέμβαση, μελετήθηκαν για 5 χρόνια μετεγχειρητικά. Οι παράμετροι, που καταγράφηκαν περιελάμβαναν την απώλεια βάρους και τη διατήρηση αυτής, τη βελτίωση ή πλήρη ίαση των συνοδών της παχυσαρκίας νόσων, τις πρώιμες και όψιμες μετεγχειρητικές επιπλοκές, τη διάρκεια επέμβασης και το χρόνο νοσηλείας των ασθενών. Αποτελέσματα: Όλοι οι ασθενείς παρουσίασαν απώλεια βάρους, χωρίς να παρατηρούνται στατιστικά σημαντικές διαφορές μεταξύ των δύο ομάδων, που διατηρήθηκε σε όλη τη διάρκεια του follow-up. Μικρή επανάκτηση του απολεσθέντος βάρους παρατηρήθηκε μετά τον 3ο χρόνο μετεγχειρητικά. Η ίαση ή βελτίωση των συνοδών νοσημάτων δεν παρουσίασε στατιστικά σημαντική διαφορά μεταξύ των δύο ομάδων. Ισοδύναμες παρουσιάζονται και οι δύο τεχνικές, όσον αφορά στην εμφάνιση μετεγχειρητικών επιπλοκών. Η διάρκεια της λαπαροσκοπικής επέμβασης παρουσιάζεται μεγαλύτερη, γεγονός που μπορεί να ερμηνευθεί βάσει της καμπύλης εκμάθησης. Η διάρκεια νοσηλείας δεν παρουσιάζει διαφορά μεταξύ των δύο ομάδων. Συμπεράσματα: Η λαπαροσκοπική γαστρική παράκαμψη, συγκρινόμενη με την ανοικτή επέμβαση, αποτελεί μία εξίσου ασφαλή και αποτελεσματική τεχνική για την αντιμετώπιση της κλινικά σοβαρής παχυσαρκίας. / Roux en Y gastric bypass (RYGBP) is the most popular operation between patients, undergoing bariatric operation. In modern times, over half of the gastric bypass operations are performed by the laparoscopic way. The aim of the present study is the comparison between open and laparoscopic technique, in a follow-up period of 5 years post surgically.`Methods: The first 60 patients, who underwent open gastric bypass and the respective 60 patients, who underwent the laparoscopic approach, were studied for 5 years post surgically. The parameters recorded, included the excess weight loss and the following maintenance of the loss, the improvement or healing of the obesity related comorbidities, early and late complications, the duration of the operation and the duration of the patients’ hospitalization. Results: All patients exhibited excess weight loss, without statistically significant differences between the two groups, which maintained throughout the follow-up period. A small proportion of regaining the lost weight was observed after the 3rd year post surgically. Healing or improvement of the obesity related comorbidities didn’t appear statistically significant difference between the two groups. There were no differences between the two groups regarding the post surgically complications. The duration of the laparoscopic approach was longer, which can be attributed to the learning curve. The duration of the patients’ hospitalization didn’t differ between the two groups. Conclusion: Laparoscopic gastric bypass, compared to the open procedure, is an equally safe and effective technique for the confrontation of clinically severe obesity.

<p>This thesis examines the effect of surgical weight loss on gut and adipose tissue peptides involved in appetite regulation and energy homeostasis in morbidly obese humans. Roux-en-Y gastric bypass (RYGBP) is the gold standard operation used for effective long-term weight loss and improved health. The exact mechanisms for this outcome are under investigation.</p><p>We measured ghrelin, a recently discovered hunger hormone, insulin, adiponectin and leptin along with anthropometry measures in 66 morbidly obese patients prior to and 6 and 12 months after RYGBP. Impressive weight loss occurred postoperatively as did alterations in the peptides. Consistent correlations were found between weight, leptin, ghrelin and insulin. The main findings were low ghrelin concentrations in obesity and an increase after RYGBP.</p><p>We explored inflammatory proteins C-reactive protein (CRP), serum amyloid A and interleukin-6 before and during massive weight loss 6 and 12 months after RYGBP in morbidly obese subjects. The studied proteins declined after surgery and a correlation between CRP and homeostatic model of assessment for insulin resistance, independent of BMI, strongly linked insulin resistance and inflammation. CRP declined most in insulin-sensitive subjects.</p><p>We examined the excluded stomach mucosa and vagus nerve by measuring gastrin, pepsinogen I (PGI), pancreatic polypeptide (PP) and ghrelin levels during week 1 and year after RYGBP. Ghrelin levels rose with weight loss but declined 24-hours after surgery, like PP, indicating transient vagal nerve damage. Low levels of gastrin and PGI suggest a resting mucosa.</p><p>We evaluated gut peptides: peptide YY (PYY), glucaogon like peptide-1 (GLP-1), pro-neurotensin (pro-NT) and PP, in lean (young and middle-aged), obese and postoperative RYGBP subjects pre- and postprandially. RYGBP subjects had exaggerated levels of PYY and GLP-1 postprandially and higher basal proNT levels, implying a ‘satiety peptide tone’ that may contribute to the maintenance of weight loss.</p><p>In summary, RYGBP results in marked weight loss and alterations in gut and adipose tissue peptides involved in appetite regulation and energy homeostasis. These postoperative peptide changes may contribute to impressive weight loss observed after RYGBP.</p>

A gordura epicárdica é biologicamente ativa e sua espessura nos obesos é aumentada. A repercussão da gordura epicárdica sobre o remodelamento cardíaco ainda não está completamente elucidada. No presente estudo, foi avaliada a gordura epicárdica e sua influência no remodelamento cardíaco de obesos mórbidos, antes e após a cirurgia bariátrica. Métodos: No Hospital das Clínicas da Universidade de São Paulo, foram recrutados de forma prospectiva 20 obesos mórbidos sem outras comorbidades e 20 controles. Os participantes realizaram avaliação clínica e laboratorial, medida da duração da onda P no ECG e ecocardiograma transtorácico. O grupo de obesos repetiu essa avaliação 12 meses após a cirurgia bariátrica. A medida da gordura epicárdica foi feita pelo ecocardiograma. Para comparar as variáveis contínuas, foram utilizados os testes t de Student (não pareado e pareado), de Mann-Whitney ou de Wilcoxson. Para definir correlação entre as variáveis lineares, foi utilizado o coeficiente de correlação de Pearson. Para definir a associação entre variáveis categóricas, foi usado o teste exato de Fisher. Para avaliar a associação entre variáveis dependentes e independentes, foi realizada uma análise de regressão múltipla. Os dados foram examinados no software R. Um valor de p abaixo de 0,05 foi considerado significativo. Resultados: No préoperatório, foram observados níveis elevados de proteína C reativa, uma maior duração da onda P, da massa ventricular e do diâmetro do átrio esquerdo nos obesos em relação aos controles (p < 0,05). Uma menor fração de ejeção do ventrículo esquerdo foi observada no grupo de obesos (p < 0,05). A gordura epicárdica foi maior nos obesos (p < 0,01). Uma correlação positiva foi encontrada entre a gordura epicárdica, a duração da onda P (r=0,70; p < 0,01), o diâmetro do átrio esquerdo (r=0,67; p < 0,01) e a massa ventricular (r=0,58; p < 0,01). Uma correlação inversa foi observada entre a gordura epicárdica e a fração de ejeção do ventrículo esquerdo (r=- 0,52; p < 0,01). Na análise de regressão múltipla, a gordura epicárdica permaneceu correlacionada com a duração da onda P, o diâmetro do átrio esquerdo e a fração de ejeção do ventrículo esquerdo (p < 0,05). Em 60% dos obesos, foi identificada alguma alteração na geometria ventricular. Uma associação entre a espessura da gordura epicárdica maior ou igual a 3,7 mm e a presença de remodelamento ventricular geométrico foi demonstrada (p=0,03). No pós-operatório, observou-se uma redução do índice de massa corporal, da proteína C reativa e da gordura epicárdica (p < 0,01). Uma redução da duração da onda P e um aumento da fração de ejeção do ventrículo esquerdo também foram observados (p < 0,01). Na análise de regressão múltipla esses achados permaneceram correlacionados à redução da gordura epicárdica (p < 0,05), independente da variação do índice de massa corporal e da proteína C reativa. Conclusões: Em obesos mórbidos sem outras comorbidades, a gordura epicárdica foi associada a um aumento da duração da onda P, do diâmetro do átrio esquerdo e da massa ventricular, além de uma menor fração de ejeção do ventrículo esquerdo. A espessura da gordura epicárdica igual ou acima de 3,7 mm foi associada a alterações do remodelamento ventricular. A redução da gordura epicárdica após a cirurgia bariátrica foi associada com a redução da duração da onda P e o aumento da fração de ejeção do ventrículo esquerdo, independente da variação do índice de massa corporal e da proteína C reativa / Epicardial fat is biologically active and its thickness is increased in obese subjects. The effects of epicardial fat on cardiac remodeling are still not fully understood. In the present study we evaluated epicardial fat and its influence on cardiac remodeling of morbidly obese, before and after bariatric surgery. Methods: We prospectively recruited 20 morbid obese subjects without other comorbidities and 20 control subjects at Hospital das Clínicas, Universidade de São Paulo. Participants underwent clinical and laboratory assessment, measure of P-wave duration on ECG and transthoracic echocardiogram. The obese group repeated this evaluation 12 months after the bariatric surgery. To compare continuous variables, we used t Student test (paired and nonpaired), Mann-Whitney and Wilcoxson tests. To define the correlation between linear variables we used Pearson correlation coefficient. To define the association between categorical variables we used Fisher exact test. A multiple regression analysis was performed to assess the association between dependent and independent variables. Data were analyzed by software R. A p value below 0.05 was considered statistically significant. Results: Preoperatively, we observed high levels of C-reactive protein, longer P-wave duration, larger ventricular mass and left atrial diameter in obese subjects compared to the controls (p < 0.05). Lower left ventricle ejection fraction was observed in the obese group (p < 0.05). Epicardial fat was higher among obese subjects (p < 0.01). A positive correlation was found between epicardial fat and P-wave duration (r=0.70; p < 0.01), left atrial diameter (r=0.67; p < 0.01), and ventricular mass (r=0.58; p < 0.01). An inverse correlation was observed between epicardial fat and left ventricle ejection fraction (r=-0.52; p < 0.01). In the multiple regression analysis, epicardial fat remained correlated with P-wave duration, left atrial diameter and left ventricle ejection fraction (p < 0.05). In 60% of the obese subjects, there was some abnormality in ventricular geometry. We showed association between thickness of epicardial fat equal to or higher than 3.7 mm and presence of geometric ventricular remodeling (p=0.03). Postoperatively, we observed reduction in body mass index, C-reactive protein and epicardial fat (p < 0.01). Reduction in P-wave duration and an increase in left ventricle ejection fraction were also observed (p < 0.01). In the multiple regression analysis, these findings were correlated with reduction in epicardial fat (p < 0.05), regardless of the variation in body mass index and C-reactive protein. Conclusion: In morbid obese subjects without other comorbidities, epicardial fat was associated with increase in P-wave duration, left atrial diameter and ventricular mass, in addition to smaller left ventricle ejection fraction. Epicardial fat thickness equal to or greater than 3.7 mm was associated with abnormalities in ventricular remodeling. Reduction of epicardial fat after bariatric surgery was associated with reduction of P-wave duration and increase in left ventricle ejection fraction, regardless of the variation in body mass index and C-reactive protein

Made available in DSpace on 2016-08-10T10:53:47Z (GMT). No. of bitstreams: 1 MARINA OLIVEIRA CHAGAS.pdf: 2337992 bytes, checksum: 50fdf9968ba71fafd15df448593fb9ca (MD5) Previous issue date: 2013-03-22 / Obesity is, nowadays, one of the major epidemiological challenges of the XXI century. It is considered a chronic disease, characterized by the excessive accumulation of body fat.The morbid obesity defined by the BMI greater than or equal to 40 kg/m2 is related to the occurrence of comorbities, which can cause losses in quality of life (QOL).The present study aimed to assess the quality of life and investigate accessibility issues faced by people with morbid obesity, users of the Unified Health System, in Jataí, Goias. This research was divided into two studies, the first to evaluate the QOL of morbidly obese people, characterize the socioeconomic profile, and analyze the influence of the variables age, gender, BMI classification, education and economic class quality life, and the second to understand the experience lived by morbidly obese people as accessibility, exploring aspects related to the environment, autonomy and security. Fifty people attended to the research, mostly female, aged 20 to 69 years, high school education level and economic class C. The instruments used were the Economic Classification Criterion Brazil, the questionnaires WHOQOL-Brefand SF-36, the semi-structured interview and clinical records. The results for the quantitative analysis indicated that the lowest mean score of QOL scores were the domains general health (50.94%) of the SF-36 and the environment (53.06%) of the WHOQOL-Bref. In the analysis of the influence of the variables age, gender, BMI classification, education and economic status in quality of life were found statistically significant differences, through the WHOQOLBref, the field environment both for the analysis of quality of life and education (p = 0.008) and for quality of life and economic class (p = 0.004).In the SF-36, significant differences were found between quality of life and functional capacity in the field age (p = 0.003), and between quality of life and physical domains in gender (p = 0.027), pain (p = 0.007), social aspects (p = 0.040) and mental health (p = 0.007).In the other variables significant associations were not found (p> .05). Regarding the qualitative data emerged five final categories: impaired daily activities, problems with the environmental space and services, impacts of spatial restrictions on inter-social relationships, coping with stress and demands for social inclusion. Knowing the difficulties of these people is important for improving public policy, providing behavior change, define projects of more accessible environments, thus offering equal opportunity recreation, transportation, healthcare, enabling improvements in quality of life. / A obesidade é atualmente um dos grandes desafios epidemiológicos do século XXI. É considerada uma doença crônica, caracterizada pelo acúmulo excessivo de gordura corporal. A obesidade mórbida definida pelo IMC maior ou igual a 40 kg/m2 está relacionada com a ocorrência de comorbidades, que pode ocasionar prejuízos na Qualidade de Vida (QV). O presente estudo teve como objetivo geral avaliar a qualidade de vida e investigar problemas de acessibilidade enfrentados por pessoas com obesidade mórbida, usuários do Sistema Único de Saúde, no município de Jataí, Goiás. A presente investigação foi dividida em dois estudos, sendo o primeiro com objetivo de avaliar a QV de pessoas com obesidade mórbida, caracterizar o perfil socioeconômico, e analisar a influência das variáveis, idade, sexo, classificação do IMC, escolaridade e classe econômica na qualidade de vida, e o segundo objetivou compreender a experiência vivenciada por pessoas com obesidade mórbida, quanto à acessibilidade, explorando os aspectos referentes ao ambiente, a autonomia e a segurança. Participaram cinquenta indivíduos, sendo a maioria do sexo feminino, com idade entre 20 a 69 anos, nível de escolaridade ensino médio e classe econômica C. Os instrumentos utilizados foram o Critério de Classificação Econômica Brasil, os questionários WHOQOL-Bref e SF-36, a entrevista semiestruturada e Prontuários Clínicos. Os resultados para a análise quantitativa indicaram que as menores médias da pontuação dos escores de QV foram os domínios estado geral de saúde (50,94%) do SF-36 e meio ambiente (53,06%) do WHOQOL-Bref. Na análise da influência das variáveis, idade, sexo, classificação do IMC, escolaridade e classe econômica na qualidade de vida, foram encontradas diferenças estatisticamente significativas, pelo WHOQOL-Bref, no domínio meio ambiente tanto para a análise entre qualidade de vida e escolaridade (p=0,008) quanto para qualidade de vida e classe econômica (p=0,004). No SF-36, foram encontradas diferenças significativas entre qualidade de vida e idade no domínio capacidade funcional (p=0,003), e entre qualidade de vida e sexo nos domínios aspectos físicos (p=0,027), dor (p=0,007), aspectos sociais (p=0,040) e saúde mental (p=0,007). Nas demais variáveis não foram encontradas associações significativas (p>0,05). Quanto aos dados qualitativos emergiram cinco categorias finais: atividades diárias prejudicadas, problemas com o espaço ambiental e os serviços, impactos das restrições espaciais nas inter-relações sociais, enfrentamento do estresse e cobranças para a inclusão social. Conhecer as dificuldades dessas pessoas é importante para melhorar as políticas públicas, propiciar mudanças de comportamento, definir projetos de ambientes mais acessíveis, oferecendo desta forma oportunidades igualitárias de lazer, transporte, saúde, possibilitando melhorias na qualidade de vida.

A gordura epicárdica é biologicamente ativa e sua espessura nos obesos é aumentada. A repercussão da gordura epicárdica sobre o remodelamento cardíaco ainda não está completamente elucidada. No presente estudo, foi avaliada a gordura epicárdica e sua influência no remodelamento cardíaco de obesos mórbidos, antes e após a cirurgia bariátrica. Métodos: No Hospital das Clínicas da Universidade de São Paulo, foram recrutados de forma prospectiva 20 obesos mórbidos sem outras comorbidades e 20 controles. Os participantes realizaram avaliação clínica e laboratorial, medida da duração da onda P no ECG e ecocardiograma transtorácico. O grupo de obesos repetiu essa avaliação 12 meses após a cirurgia bariátrica. A medida da gordura epicárdica foi feita pelo ecocardiograma. Para comparar as variáveis contínuas, foram utilizados os testes t de Student (não pareado e pareado), de Mann-Whitney ou de Wilcoxson. Para definir correlação entre as variáveis lineares, foi utilizado o coeficiente de correlação de Pearson. Para definir a associação entre variáveis categóricas, foi usado o teste exato de Fisher. Para avaliar a associação entre variáveis dependentes e independentes, foi realizada uma análise de regressão múltipla. Os dados foram examinados no software R. Um valor de p abaixo de 0,05 foi considerado significativo. Resultados: No préoperatório, foram observados níveis elevados de proteína C reativa, uma maior duração da onda P, da massa ventricular e do diâmetro do átrio esquerdo nos obesos em relação aos controles (p < 0,05). Uma menor fração de ejeção do ventrículo esquerdo foi observada no grupo de obesos (p < 0,05). A gordura epicárdica foi maior nos obesos (p < 0,01). Uma correlação positiva foi encontrada entre a gordura epicárdica, a duração da onda P (r=0,70; p < 0,01), o diâmetro do átrio esquerdo (r=0,67; p < 0,01) e a massa ventricular (r=0,58; p < 0,01). Uma correlação inversa foi observada entre a gordura epicárdica e a fração de ejeção do ventrículo esquerdo (r=- 0,52; p < 0,01). Na análise de regressão múltipla, a gordura epicárdica permaneceu correlacionada com a duração da onda P, o diâmetro do átrio esquerdo e a fração de ejeção do ventrículo esquerdo (p < 0,05). Em 60% dos obesos, foi identificada alguma alteração na geometria ventricular. Uma associação entre a espessura da gordura epicárdica maior ou igual a 3,7 mm e a presença de remodelamento ventricular geométrico foi demonstrada (p=0,03). No pós-operatório, observou-se uma redução do índice de massa corporal, da proteína C reativa e da gordura epicárdica (p < 0,01). Uma redução da duração da onda P e um aumento da fração de ejeção do ventrículo esquerdo também foram observados (p < 0,01). Na análise de regressão múltipla esses achados permaneceram correlacionados à redução da gordura epicárdica (p < 0,05), independente da variação do índice de massa corporal e da proteína C reativa. Conclusões: Em obesos mórbidos sem outras comorbidades, a gordura epicárdica foi associada a um aumento da duração da onda P, do diâmetro do átrio esquerdo e da massa ventricular, além de uma menor fração de ejeção do ventrículo esquerdo. A espessura da gordura epicárdica igual ou acima de 3,7 mm foi associada a alterações do remodelamento ventricular. A redução da gordura epicárdica após a cirurgia bariátrica foi associada com a redução da duração da onda P e o aumento da fração de ejeção do ventrículo esquerdo, independente da variação do índice de massa corporal e da proteína C reativa / Epicardial fat is biologically active and its thickness is increased in obese subjects. The effects of epicardial fat on cardiac remodeling are still not fully understood. In the present study we evaluated epicardial fat and its influence on cardiac remodeling of morbidly obese, before and after bariatric surgery. Methods: We prospectively recruited 20 morbid obese subjects without other comorbidities and 20 control subjects at Hospital das Clínicas, Universidade de São Paulo. Participants underwent clinical and laboratory assessment, measure of P-wave duration on ECG and transthoracic echocardiogram. The obese group repeated this evaluation 12 months after the bariatric surgery. To compare continuous variables, we used t Student test (paired and nonpaired), Mann-Whitney and Wilcoxson tests. To define the correlation between linear variables we used Pearson correlation coefficient. To define the association between categorical variables we used Fisher exact test. A multiple regression analysis was performed to assess the association between dependent and independent variables. Data were analyzed by software R. A p value below 0.05 was considered statistically significant. Results: Preoperatively, we observed high levels of C-reactive protein, longer P-wave duration, larger ventricular mass and left atrial diameter in obese subjects compared to the controls (p < 0.05). Lower left ventricle ejection fraction was observed in the obese group (p < 0.05). Epicardial fat was higher among obese subjects (p < 0.01). A positive correlation was found between epicardial fat and P-wave duration (r=0.70; p < 0.01), left atrial diameter (r=0.67; p < 0.01), and ventricular mass (r=0.58; p < 0.01). An inverse correlation was observed between epicardial fat and left ventricle ejection fraction (r=-0.52; p < 0.01). In the multiple regression analysis, epicardial fat remained correlated with P-wave duration, left atrial diameter and left ventricle ejection fraction (p < 0.05). In 60% of the obese subjects, there was some abnormality in ventricular geometry. We showed association between thickness of epicardial fat equal to or higher than 3.7 mm and presence of geometric ventricular remodeling (p=0.03). Postoperatively, we observed reduction in body mass index, C-reactive protein and epicardial fat (p < 0.01). Reduction in P-wave duration and an increase in left ventricle ejection fraction were also observed (p < 0.01). In the multiple regression analysis, these findings were correlated with reduction in epicardial fat (p < 0.05), regardless of the variation in body mass index and C-reactive protein. Conclusion: In morbid obese subjects without other comorbidities, epicardial fat was associated with increase in P-wave duration, left atrial diameter and ventricular mass, in addition to smaller left ventricle ejection fraction. Epicardial fat thickness equal to or greater than 3.7 mm was associated with abnormalities in ventricular remodeling. Reduction of epicardial fat after bariatric surgery was associated with reduction of P-wave duration and increase in left ventricle ejection fraction, regardless of the variation in body mass index and C-reactive protein

O objetivo do presente estudo foi comparar a composição corporal, ingestão alimentar e condição periodontal de pacientes obesos mórbidos com síndrome metabólica (SM) e sem SM, candidatos à cirurgia bariátrica. O estudo foi de caráter observacional, transversal e analítico, envolvendo pacientes com índice de massa corporal (IMC) entre 40,0 a 49,9 kg/m² e idade entre 18 e 55 anos, atendidos no ambulatório de Cirurgia Bariátrica do Hospital Amaral Carvalho (HAC), de Jaú - SP. A amostra foi constituída por 60 indivíduos, divididos em dois grupos: grupo com SM (G1-com SM = 30) e grupo sem SM (G2-sem SM = 30), os quais foram avaliados no pré-operatório da cirurgia bariátrica. As variáveis analisadas foram: idade, escolaridade, renda per capita, peso, altura, IMC, circunferência da cintura, circunferência do quadril, relação cintura-quadril, composição corporal por bioimpedância elétrica, ingestão alimentar, consumo de bebida alcoólica, índice de sangramento gengival, recessão gengival, profundidade da sondagem, índice de placa e índice de cálculo. Foram adotados os testes Qui-quadrado e teste t não pareado, para verificar a associação entre SM e o desfecho bucal (doença periodontal), seguidos de regressão linear multivariada e correlação Scatter-Plot (p<0,05). Não houve diferença significativa entre os grupos quanto à composição corporal e a ingestão alimentar. O G1-com SM apresentaram maior idade (p=0,0006) e maior número de dentes ausentes (p=0,0002). Quanto às condições periodontais, a bolsa vestibular ou lingual de 0-3mm foram mais prevalentes em G2-sem SM (p=0,0002), recessão vestibular ou lingual =0 também foram maior (p<0,0003). Concluiu-se que pacientes com SM apresentam piores condições periodontais do que os sem SM. A atenção integral à saúde destes pacientes se faz necessária através de equipe multiprofissional, com a participação do cirurgião dentista. / The aim of the present study was to compare the body composition, food intake and periodontal condition of morbidly obese patients with metabolic syndrome (MS) and without MS, candidates for bariatric surgery. The study was observational, crosssectional and analytical, involving patients with body mass index (BMI) between 40.0 and 49.9 kg / m² and aged between 18 and 55 years, attended at the ambulatory of Bariatric Surgery of the Hospital Amaral Carvalho (HAC), Jaú - SP. The sample consisted of 60 subjects, divided into two groups: group with MS (G1-with SM = 30) and group without MS (G2-without SM = 30), which were evaluated in the preoperative period of bariatric surgery. The variables analyzed were: age, education, per capita income, weight, height, BMI, waist circumference, hip circumference, waist to hip ratio, body composition by electric bio impedance, food intake, alcohol consumption and gingival bleeding index, gingival recession, probing pocket depth, plaque index and calculus index. Chi-square tests and unpaired t test were used to verify the association between MS and buccal outcome (periodontal disease), followed by multivariate linear regression and Scatter-Plot correlation (p <0.05). There was no significant difference between the groups regarding body composition and food intake. The G1-with SM showed older age (p = 0.0006) and greater number of missing teeth (p = 0.0002). As for periodontal conditions, the vestibular or lingual pouch of 0-3mm were more prevalent in G2-without SM (p = 0.0002), buccal or lingual recession = 0 were also higher (p <0.0003).It was concluded that patients with MS have worse periodontal conditions than those without MS. The integral health care of these patients is necessary through a multiprofessional team, with the participation of the dentist surgeon.

A doença periodontal está se tornando altamente prevalente em todo o mundo. A Síndrome de Apneia obstrutiva do Sono (SAOS) é definida por episódios de obstrução das vias aéreas superiores, durante o sono. Este estudo analítico transversal tem como objetivo verificar a presença de doença periodontal e o risco de SAOS em pacientes obesos de grau III. Além de relacionar as medidas antropométricas ao risco de SAOS. A amostra foi composta por 108 indivíduos na faixa de 30 a 60 anos, de ambos os gêneros, referidos a clinica de pós-graduação da Faculdade de Odontologia de Bauru-Universidade de São Paulo. Foram aferidas as medidas antropométricas. O questionário de Berlin (QB) e a escala de sonolência de Epworth (ESE) foram aplicados para determinar o risco de SAOS. Avaliou-se a condição periodontal de boca toda, quanto à profundidade de sondagem, nível de inserção clínica, índice de sangramento gengival e cálculo. Na análise estatística foram utilizados coeficiente de Correlação de Spearman, testes t de Student e Quiquadrado, e regressão logística multivariada (p<0,050). Os resultados mostraram que 97,2% dos pacientes apresentavam doença periodontal (85,19% periodontite e 60,19% gengivite), o 81,48% dos pacientes tinham alto risco de SAOS, 46,30% sonolência diurna excessiva (SDE), e foram positivos para o QB e a ESE 41,47%. Dos pacientes com doença periodontal, o 82,86% apresentava alto risco de SAOS (QB) e o 45,71% apresentou SDE. A circunferência de cintura (CCi), circunferência cervical (CC) e o percentual previsto de circunferência cervical (PPCC) foram correlacionados ao risco de SAOS (p=0,029; p=0,015; p=0,014, respectivamente). A sonolência diurna se relacionou com a CC (p=0,002) e PPCC (p=0,002). Não houve associação da doença periodontal e o risco de SAOS. Periodontite-ESE (OR=1,84; IC=0,54-6,26), periodontite-QB (OR=0,87; IC=0,10-7,84), gengivite-ESE (OR=1,25; IC=0,48-3,25), gengivite-QB (OR=0,23; IC=0,03-1,84). No entanto, o ronco foi positivamente associado com a gengivite (OR=1,84; IC=0,54-6,26). Este estudo mostrou que a doença periodontal não esteve associada com o risco de SAOS, em nenhuma de suas condições. As medidas antropométricas de CC e PPCC estiveram fortemente associadas ao risco de SAOS. / Periodontal disease is becoming highly prevalent disease worldwide. Obstructive sleep apnea Syndrome (OSAS) is defined by episodes of upper airway obstruction during sleep. This cross-sectional study aims to verify the presence of periodontal disease and the risk of OSAS in obese patients grade III. In addition, to relate the anthropometric measures of the risk of OSAS. The sample included 108 individuals aged 30 to 60 years, both genders, referenced to the postgraduate clinical of Bauru Dental School, University of São Paulo. Anthropometric measurements were taken. The Berlin questionnaire (BQ) and the Epworth sleepiness scale (ESS) were applied to determine the risk of OSAS. Full mouth periodontal status was evaluated using probing depth, clinical attachment level, gingival bleeding index and calculus. Statistical analysis Spearman correlation coefficient, t-Student and Chi-square tests, and multivariate logistic regression (p<0,050). The results showed that 97.2% of patients had periodontal disease (periodontitis 85.19% and 60.19% gingivitis), the 81.48% of patients had high risk of OSAS, 46.30% had excessive daytime sleepiness (EDS) and were positive for the BQ and the ESS 41.47%. Patients with periodontal disease, 82.86% had a high risk of OSAS (BQ) and 45.71% had EDS. Waist circumference (WC), neck circumference (NC) and the percentage of predicted neck circumference (PPNC) were correlated to the risk of OSAS (p=0.029, p=0.015, p=0.014, respectively). Daytime sleepiness was associated with NC (p=0.002) and PPNC (p=0.002). There was no association of periodontal disease and the risk of OSAS. Periodontitis-ESS (OR=1.84, CI=0.54 - 6.26), periodontitis-BQ (OR=0.87, CI=0.10 - 7.84), gingivitis-ESS (OR=1.25, CI=0.48 - 3.25), gingivitis-BQ (OR=0.23, CI=0.03 - 1.84). Snoring was positively associated with gingivitis (OR=1.84, CI=0.54 - 6.26). This study showed that periodontal disease was not associated with the risk of OSAS, in any of its conditions. Anthropometric measurements of CC and PPNC were strongly associated with the risk of OSAS.

This thesis examines the effect of surgical weight loss on gut and adipose tissue peptides involved in appetite regulation and energy homeostasis in morbidly obese humans. Roux-en-Y gastric bypass (RYGBP) is the gold standard operation used for effective long-term weight loss and improved health. The exact mechanisms for this outcome are under investigation. We measured ghrelin, a recently discovered hunger hormone, insulin, adiponectin and leptin along with anthropometry measures in 66 morbidly obese patients prior to and 6 and 12 months after RYGBP. Impressive weight loss occurred postoperatively as did alterations in the peptides. Consistent correlations were found between weight, leptin, ghrelin and insulin. The main findings were low ghrelin concentrations in obesity and an increase after RYGBP. We explored inflammatory proteins C-reactive protein (CRP), serum amyloid A and interleukin-6 before and during massive weight loss 6 and 12 months after RYGBP in morbidly obese subjects. The studied proteins declined after surgery and a correlation between CRP and homeostatic model of assessment for insulin resistance, independent of BMI, strongly linked insulin resistance and inflammation. CRP declined most in insulin-sensitive subjects. We examined the excluded stomach mucosa and vagus nerve by measuring gastrin, pepsinogen I (PGI), pancreatic polypeptide (PP) and ghrelin levels during week 1 and year after RYGBP. Ghrelin levels rose with weight loss but declined 24-hours after surgery, like PP, indicating transient vagal nerve damage. Low levels of gastrin and PGI suggest a resting mucosa. We evaluated gut peptides: peptide YY (PYY), glucaogon like peptide-1 (GLP-1), pro-neurotensin (pro-NT) and PP, in lean (young and middle-aged), obese and postoperative RYGBP subjects pre- and postprandially. RYGBP subjects had exaggerated levels of PYY and GLP-1 postprandially and higher basal proNT levels, implying a ‘satiety peptide tone’ that may contribute to the maintenance of weight loss. In summary, RYGBP results in marked weight loss and alterations in gut and adipose tissue peptides involved in appetite regulation and energy homeostasis. These postoperative peptide changes may contribute to impressive weight loss observed after RYGBP.

Background: In morbidly obese individuals (MO) cardiorespiratory comorbidities and body habitus challenge the perioperative management of anesthesia. To implement safe and reproducible routines for anesthesia and fluid therapy is the cornerstone in order to minimize anesthesia-related complications and to meet individual variability in rehydration needs. Methods: Paper I: Impact of rapid-weight-loss preparation prior to bariatric surgery was investigated. Prevalence of preoperative dehydration and cardiac function were assessed with transthoracic echocardiography (TTE). Paper II: The anesthetic technique for rapid sequence induction (RSI) in MO based on a combination of volatile and i.v. anesthetics was developed. Pre- and post-induction oxygenation, blood pressure levels and feasibility of the method was evaluated. Paper III: The preoperative ideal body weight based rehydration regime was evaluated by TTE. Paper IV: Need of rehydration during bariatric surgery was evaluated by comparing conventional monitoring to a more advanced approach (i.e. preoperative TTE and arterial pulse wave analysis). Results: Rapid-weight-loss preparation prior to bariatric surgery may expose MO to dehydration. TTE was shown to be a robust modality for preoperative screening of the level of venous return, assessment of filling pressures and biventricular function of the heart in MO. The combination of sevoflurane, propofol, alfentanil and suxamethonium was demonstrated to be a safe method for RSI regardless of BMI. The preoperative rehydration regime implemented by colloids 6 ml/kg IBW was an adequate treatment to obtain euvolemia. In addition, preoperative rehydration seems to increase hemodynamic stability during intravenous induction of anesthesia and even intraoperatively. Conclusion: This thesis describes a safe and comprehensive perioperative management of morbidly obese individuals scheduled for bariatric surgery. Hemodynamic and respiratory stability can be achieved by implementation of strict and proven methods of anesthesia and fluid therapy. Much focus should be placed on feasible monitoring and preoperative optimization in morbidly obese individuals for increased perioperative safety.