Introduction: Laparoscopic sleeve gastrectomy (LSG) is one of the surgical procedures indicated in the treatment of obesity. The occurrence of gastroesophageal reflux (GER) in the postoperative period of this surgery is related to a reduction in the lower esophageal sphincter (LES) tone and the presence of gastric residual fundus (RF) associated with increased gastric intraluminal pressure. Fixation of the remaining gastric reservoir to the gastrosplenic and gastrocolic ligaments (omentopexy) has emerged as a technical option to avoid or decrease GER in the postoperative period of LSG.

Context Impairment of esophageal motility is a common finding in patients with gastroesophageal reflux disease (GERD) as reduced lower esophageal sphincter (LES) basal pressure. A very low LES pressure might facilitate the occurrence of more gastroesophageal reflux whereas abnormal esophageal peristalsis may contribute to impaired esophageal clearance after reflux. Objective Evaluate the esophageal motor function of the lower esophageal sphincter and esophageal body in the various forms of gastroesophageal reflux disease. Methods The manometrics records of 268 patients, who had evaluation of the esophageal motility as part of the diagnostic gastroesophageal reflux disease were split into four groups, as follows: 33 patients who had no esophagitis; 92 patients who had erosive esophagitis; 101 patients who had short Barrett's esophagus and 42 patients who had long Barrett's esophagus. Results The group who had long Barrett's esophagus showed smaller mean LES pressure and higher percentage of marked LES hypotonia; in the distal segment of the esophageal body the this group showed higher percentage of marked hypocontractility of the distal segment (<30 mm Hg); this same group showed higher percentage of esophageal motility disorders. Conclusions The most intense esophageal motility disorders and lower pressure of lower esophageal sphincter were noted in the group with long Barrett's esophagus. Those with reflux esophagitis and short Barrett's esophagus had esophageal motility impairment, intermediate among patients with esophagitis and long Barrett's esophagus. Patients with typical symptoms of gastroesophageal reflux but without esophagitis by endoscopy study showed no impairment of esophageal motility.

RESUMO -Racional -Por padronização aceita internacionalmente, posiciona-se o sensor distal de pHmetria esofágica a 5 cm acima da borda superior do esfíncter inferior do esôfago, localizado por manometria esofágica. Porém, vários autores sugerem técnicas alternativas de posicionamento que prescindem da manometria. Dentre essas, destaca-se a da viragem do pH, tema este controverso pela sua duvidosa confiabilidade. Objetivo -Avaliar a adequação do posicionamento do sensor distal de pHmetria pela técnica de viragem do pH, considerandose a presença, o tipo e o grau de erro de posicionamento que tal técnica proporciona, e também estudar a influência da posição adotada pelo paciente durante a técnica da viragem. Métodos -Foram estudados de modo prospectivo, durante o período de 1 ano, 1.031 pacientes. Durante entrevista clínica, foram registrados os dados demográficos e as queixas clínicas apresentadas. Todos foram submetidos a manometria esofágica para localização do esfíncter inferior do esôfago e a técnica da viragem do pH. A identificação do ponto de viragem foi realizada de dois modos distintos, caracterizando dois grupos de estudo: com o paciente sentado (grupo I -450 pacientes) e com o paciente em decúbito dorsal horizontal (grupo II -581 pacientes). Após a identificação do ponto de viragem, o sensor distal de pHmetria era posicionado na posição padronizada, baseada na localização manométrica do esfíncter. Registrava-se onde seria posicionado o sensor de pH se fosse adotada a técnica da viragem. Para avaliação da adequação do posicionamento, considerou-se que o erro é representado pela diferença (em centímetros) entre a localização padronizada (manométrica) e a localização que seria adotada caso fosse empregada a técnica da viragem. Considerou-se que o erro seria grosseiro se fosse maior que 2 cm. Analisou-se também o tipo de erro mais freqüente (se acima ou abaixo da posição padronizada). Foram incluídos todos pacientes que aceitaram participar da pesquisa e excluídos os casos nos quais não se identificou acidificação intragástrica. Resultados -Se fosse adotada a técnica da viragem, haveria erro no posicionamento do sensor em 945 pacientes (91,6%), portanto, o sensor seria posicionado na posição padronizada em apenas 86 (8,4%) casos. Em relação à caracterização do grau de erro, haveria erro considerado grosseiro em 597 (63,2%) pacientes. Em relação ao tipo de erro, o sensor seria posicionado abaixo do local padronizado em 857 (90,7%) casos. Não houve diferença significante entre os dois grupos de estudo em relação a nenhum dos parâmetros analisados, indicando que a posição adotada pelo paciente durante a manobra da viragem não interfere no erro inerente à técnica. Conclusões -1. O posicionamento do sensor distal de pHmetria pela técnica da viragem do pH não é confiável. 2. A técnica da viragem proporciona margem de erro expressiva. 3. O tipo de erro mais comum que tal modalidade técnica proporciona é o posicionamento mais distal do sensor, que pode superestimar a ocorrência de refluxo. 4. Não há influência da p...

Objective: to evaluate esophageal dysmotility (ED) and the extent of Barrett’s esophagus (BE) before and after laparoscopic Nissen fundoplication (LNF) in patients previously diagnosed with BE and ED. Methods: twenty-two patients with BE diagnosed by upper gastrointestinal (GI) endoscopy with biopsies and ED diagnosed by conventional esophageal manometry (CEM) were submitted to a LNF, and followed up with clinical evaluations, upper GI endoscopy with biopsies and CEM, for a minimum of 12 months after the surgical procedure. Results : sixteen patients were male (72.7%) and six were females (27.3%). The mean age was 55.14 (± 15.52) years old. and the mean postoperative follow-up was 26.2 months. The upper GI endoscopy showed that the mean length of BE was 4.09 cm preoperatively and 3.91cm postoperatively (p=0.042). The evaluation of esophageal dysmotility through conventional manometry showed that: the preoperative median of the lower esophageal sphincter resting pressure (LESRP) was 9.15 mmHg and 13.2 mmHg postoperatively (p=0.006). The preoperative median of the esophageal contraction amplitude was 47.85 mmHg, and 57.50 mmHg postoperatively (p=0.408). Preoperative evaluation of esophageal peristalsis showed that 13.6% of the sample presented diffuse esophageal spasm and 9.1% ineffective esophageal motility. In the postoperative, 4.5% of patients had diffuse esophageal spasm, 13.6% of aperistalsis and 22.7% of ineffective motor activity (p=0.133). Conclusion: LNF decreased the BE extension, increased the LES resting pressure, and increased the amplitude of the distal esophageal contraction; however, it was unable to improve ED.

Background and study aims  Us of proton pump inhibitors (PPIs) has made endoscopic treatment of gastroesophageal reflux disease (GERD) more efficient, with reduction in morbidity and complications. However, some patients persist with symptoms despite medical treatment and some are not compliant with it or cannot afford it for financial reasons, and thus they require non-pharmacological therapeutic options such as surgical fundoplication. Surgery may be effective in the short term, but there is related morbidity and concern about its long-term efficacy. The possibility of minimally invasive endoluminal surgeries has resulted in interest in and development of newly endoscopic devices. Good short-term results with surgical fundoplication lack of studies of is with long follow-up justify our interest in this study. The aim of this study was to investigate the efficacy of endoscopic polymer injection and endoluminal full-thickness plication in the long-term control of GERD. Patients and methods  Forty-seven patients with GERD who underwent an endoscopic procedure were followed up for 60 months and evaluated for total response (RT), partial response (RP) and no response (SR) to endoscopic treatment with reintroduction of PPIs. Results  Twenty-one patients received polymer injection (G0) and 26 endoluminal plication (G1). The number of patients with no response to endoscopic treatment with reintroduction of PPIs increased in time for both techniques (G0 P  = 0.006; G1 P  < 0.001). There was symptomatic improvement up to 12 months, with progressive loss of this trending up to 60 months in G0 and G1 ( P  < 0.001). Health-related quality of life score (GERD-HRQL) demonstrated TR in G0 and G1 at 1, 3, 6 and 12 months. The 60-month analysis showed an increased number of patients with SR in both groups. The quality of life assessment (SF-36) showed benefit in G0 up to 3 months. G0 showed a higher rate of complications. There were no deaths. There was healing of esophagitis at 3 months in 45 % of patients in G0 and 40 % in G1. There was no improvement in manometric or pH findings. Conclusion  Endoscopic therapies were ineffective in controlling GERD in the long term.

Dysplasia and esophageal adenocarcinoma may arise in patients with Barrett's esophagus after fundoplication esophageal pH monitoring showing no acid in esophagus. This suggests the need to develop methodology to evaluate the occurrence of ultra-distal reflux (1cm above the LES). The objective of the study was to compare acid exposition in three different levels: 5cm above the upper border of the LES, 1cm above the LES and in the intrasphincteric region. Eleven patients with Barrett's esophagus after Nissen fundoplication with no clinical, endoscopic and radiologic evidence of reflux were selected. Four-channel pH monitoring took place: channel A, 5cm above the upper border of the LES; channel B, 1cm above the LES; channel C, intrasphincteric; channel D, intragastric. The results of channels A, B and C were compared. There was significant increase in number of reflux episodes and a higher fraction of time with pH <4.0 in channel B compared to channel A. There was significant decrease in fraction of time with pH <4.0 in channel B compared to channel C. Two cases of esophageal adenocarcinoma were diagnosed in the studied patients. The region 1cm above the upper border of the LES is more exposed to acid than the region 5cm above the upper border of the LES, although this exposure occurred in reduced levels. The region 1cm above the upper border of the LES is less exposed to acid than the intrasphincteric region.

headings -Gastroesophageal reflux/ surgery. Barrett esophagus. Esophageal pH monitoring. Fundoplication.abstRact -Background -Esophageal adenocarcinoma and dysplasia in patients with Barrett's esophagus are seen after surgical treatment of GERD (fundoplication). Esophageal pH monitoring shows no evidence of acidity, suggesting distal reflux to the conventional catheter positioning. Aim -To develop methodology for assessing ultra-distal reflux (1 cm above the top edge of the lower esophageal sphincter). Method -Were selected 11 patients with Barrett's esophagus previously submitted to Nissen fundoplication, without reflux symptoms and with endoscopy and contrasted study of esophagus without signs of relapse. Esophageal manometry was used to evaluate the location and length of the lower sphincter of the esophagus (LES). After that, esophageal pH monitoring with four channels was done: channel A at 5 cm above the top edge of the LES; channel B at 1 cm above; channel C, intra-sphincteric; channel D, intragastric. The DeMeester score was assessed on channel A. The number of episodes of acid reflux, the number of episodes of prolonged reflux and fraction of time pH<4.0 were compared on channels A and B. The fraction of time pH<4.0 was compared on channels B and C. The fraction of time with pH<4.0 above 50% on channel D was used as parameter of no proximal migration of the catheter. Results -Significant increase in the number of reflux episodes and fraction of time pH<4.0 in channel B in relation to channel A. Reduced fraction of time pH<4.0 in channel B compared to channel C was seen. Two cases of esophageal adenocarcinoma were diagnosed in the group. Conclusions -The zone 1 cm above the top edge of the LES is more exposed to acidity than the one 5 cm above, although at reduced levels. The region 1 cm above the top edge of the LES is less exposed to acidity than the intrasphincteric zone, demonstrating efficacy of fundoplication.Resumo -Racional -Displasia e adenocarcinoma esofágico surge em pacientes com esôfago de Barrett submetidos a tratamento cirúrgico (fundoplicatura) com pHmetria esofágica sem evidência de acidez, o que sugere existir refluxo distal ao cateter de pHmetria convencional. Objetivo -Desenvolver metodologia para avaliar refluxo ultra-distal (1 cm acima da borda superior de esfíncter inferior do esôfago). Método -Foram selecionados 11 pacientes com esôfago de Barrett previamente submetidos à fundoplicatura à Nissen, sem sintomas de refluxo, com endoscopia e estudo contrastado de esôfago sem sinais de recidiva. Foi realizada manometria esofágica para avaliar a localização e a extensão do esfíncter esofágico inferior (EIE). Realizou-se então pHmetria esofágica com quatro canais: canal A a 5 cm acima da borda superior do EIE; canal B a 1 cm acima; canal C intraesfincteriano; canal D intragástrico. Avaliouse o escore de DeMeester no canal A. Comparou-se o número de episódios de refluxo ácido, o número de episódios de refluxo prolongado e a fração de tempo com pH<4,0 nos canais A e B. Comparou-se a fração...

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