Avaliação de perda de peso após o uso de balão intragástrico não ajustável e ajustável / Assessment of weight loss after non-adjustable and adjustable intragastric balloon use

ABSTRACT BACKGROUND: Intragastric balloon (IGB) use is indicated for patients whose BMI precludes the option of bariatric surgery or who need to lose weight prior to undergoing surgery. It is a minimally invasive procedure and currently there are two main models of IGBs in use, the non-adjustable intragastric balloon (NIB), implanted for six months, and the adjustable intragastric balloon (AIB), implanted for up to 12 months. OBJECTIVE: Analyze clinical characteristics between patients receiving non-adjustable gastric balloon and the adjustable (prolonged implantation) intragastric balloon. METHODS: This was a cross-sectional study of 470 patients diagnosed as obese or overweight who had balloon implantation from October 2011 to July 2018. The associations between percentage excess weight loss versus clinical and demographic variables were calculated using the chi-squared test. Independent samples were submitted to the Student's t test to determine the quantitative variables, with a confidence interval of 95%. Calculation of excess weight was based on an estimated ideal weight that would correspond to a BMI of 24.99 kg/m2. RESULTS: A total of 414 patients completed the treatment achieving an average total body weight loss (%TBWL) of 15.4±7 with the NIB and 15.5±9.6 with the AIB. Overweight patients achieved higher excess weight loss (%EWL) values using AIBs (157.2±82.5) and obese patients did so with NIB use (56±29.7). Women achieved higher %EWL values (65.6±62.2) than men (48±27.1). Individuals who attended >4 consultations with a nutritionist (60.8%) achieved TBWL >18%. All of those P-values were <0.001. CONCLUSION: Obese individuals and women registered the greatest weight losses. Overweight patients achieved greater losses using AIB and obese patients did so using NIBs. NIB use was associated with higher EWL percentages. Nutritional accompaniment had a positive impact on the %TBWL.

RESUMO CONTEXTO: O uso do balão intragástrico (BIG) é indicado para pacientes cujo IMC contraindica a cirurgia bariátrica ou que necessitam perder peso antes da cirurgia. É um procedimento minimamente invasivo e atualmente existem dois modelos principais de BIG - o balão intragástrico não ajustável (BINA), implantado por seis meses, e o balão intragástrico ajustável (BIA), por até 12 meses. OBJETIVO: Analisar os fatores associados aos resultados clínicos comparando o uso de balão intragástrico não ajustável com o uso de balão intragástrico ajustável. MÉTODOS: Estudo transversal em 470 pacientes, com sobrepeso ou obesidade, submetidos ao tratamento entre outubro 2011 e julho de 2018. A associação entre as porcentagens da perda de excesso de peso (%PEP) e da perda do peso total (%PPT) com as variáveis demográficas e clínicas foram calculados com o teste qui-quadrado (P<0,05). Foi utilizado o teste t de Student para amostras independentes para comparar variáveis quantitativas, com IC 95%. O cálculo do excesso de peso foi estimado em peso ideal correspondente a um IMC de 24.99 kg/m2. RESULTADOS: Um total de 414 pacientes realizaram o tratamento até o final, com %PPT média de 15,4±7 no BINA e 15,5±9,6 no BIA. Os com sobrepeso apresentaram maiores %PEP no BIA (157,2±82,5) e os obesos maiores %PEP no BINA (56±29,7), com P<0,001. Mulheres (65,6±62,2) apresentaram maiores %PEP do que homens (48±27,1), com P<0,001. Os indivíduos que atenderam a >4 consultas com nutricionista obtiveram %PPT >18% (60,8%), com P<0,001. CONCLUSÃO: Obesos e mulheres tiveram maiores perdas ponderais. Maior perda de peso foi identificada em pacientes com sobrepeso que utilizaram BIA e em obesos os quais utilizaram BINA. O BINA esteve associado com maiores taxas de %PEP. O acompanhamento nutricional impactou positivamente na %PPT.

Complicaciones tardías en cirugía bariátrica / Late complications in bariatric surgery

La cirugía bariátrica denota complejidad y no está libre de complicaciones. Estas son de causa multfactorial y dependen de factores intrínsecos delpaciente o bien de habilidades técnicas y experiencia del cirujano. En general cualquier complicación puede catalogarse como temprana (< 30 días) otardía (> 30 días) según el tempo de aparición luego de la cirugía.La banda gástrica es uno de los procedimientos bariátricos mas realizados pero con un alto índice de complicaciones, entre las tardías destacan deslizamiento,migración y problemas del reservorio. El Bypass gástrico contnua teniendo mucha fabilidad en cuanto a control de la obesidad pero presentacomplicaciones como las hernias internas, estenosis y úlceras de anastomosis, y fstulas gastro gástricas entre otras, cuyo diagnóstco y manejo precozes importante.La gastrectomía vertcal en manga ha ganado terreno en los últmos años por sus buenos resultados pero también por su baja tasa de complicaciones amediano y largo plazo, dentro de sus problemas tardíos descritos están estenosis, dilatación gástrica y cierta relación con aparición o exacerbación derefujo gastroesofágico. Otro procedimiento bariátrico poco utlizado en la actualidad es la derivación biliopancreátca por su múltples complicacionestardías.La colelitasis es un problema comúnmente documentado luego de cirugía bariátrica en tasas de 30 a 52%, cuya resolución quirúrgica es importantepara evitar complicaciones mayores.

Bariatric surgery denotes complexity and is not free of complicatons. These are multfactorial and depend on intrinsic patent factors or technical skillsand experience of the surgeon. In general any complicatons can be classifed as early (<30 days) or late (> 30 days) as the tme of onset afer surgery.Gastric banding is one of the most performed bariatric procedures but with a high rate of complicatons; late complicatons as slipping, migraton andreservoir problems have been documented. Gastric bypass contnues to have much reliability as to control obesity but has complicatons such as internalhernias, anastomotc strictures and ulcers and gastro gastric fstulas among others, whose diagnosis and early management is important.Sleeve gastrectomy gained ground in recent years for its good results but also for its low complicaton rate in the medium and long term. The lateproblems described are stenosis, gastric dilataton and some relaton to onset or exacerbaton of gastro esophageal refux. Another bariatric procedureused actually is the biliopancreatc diversion but for his multple late complicatons it is less performed.Cholelithiasis is a problem commonly documented afer bariatric surgery rates from 30 to 52%, the surgical resoluton is important to prevent furthercomplicatons.