ESOPHAGEAL FUNCTIONAL DISORDERS IN THE PRE-OPERATORY EVALUATION OF BARIATRIC SURGERY.

BACKGROUND: Obesity is an independent risk factor for esophageal symptoms, gastroesophageal reflux disease (GERD), and motor abnormalities. When contemplating bariatric surgery, patients with obesity type III undergo esophagogastroduodenoscopy (EGD) and also esophageal manometry (EMN), and prolonged pHmetry (PHM) as part of their pre-operative evaluation. OBJECTIVE: Description of endoscopy, manometry and pHmetry findings in patients with obesity type III preparing for bariatric surgery, and correlation of these findings with the presence of typical GERD symptoms. METHODS: Retrospective study in which clinical symptoms of GERD were assessed, focusing on the presence of heartburn and regurgitation. All patients underwent EMN, PHM and most of them EGD. RESULTS: 114 patients (93 females-81%), average age 36 years old, average BMI of 45.3, were studied. Typical GERD symptoms were referred by 43 (38%) patients while 71 (62%) were asymptomatic. Eighty two patients (72% of total) underwent EGD and 36 (42%) evidenced esophageal abnormalities. Among the abnormal findings, hiatal hernia was seen in 36%, erosive esophagitis (EE) in 36%, and HH+EE in 28%. An abnormal EMN was recorded in 51/114 patients (45%). The main abnormality was a hypotensive lower esophageal sphincter (LES) in 32%, followed by ineffective esophageal motility in 25%, nutcracker esophagus in 19%, IEM + hypotensive LES in 10%, intra-thoracic LES (6%), hypertensive LES (4%), aperistalsis (2%) and achalasia (2%). Among the 43 symptomatic patients, 23 (53%) had abnormal EMN and 31/71 asymptomatic cases (44%) also presented this finding (P=0.30). PHM showed abnormal reflux in 60/114 patients (53%), with a predominance of bi-positional reflux (42%), followed by supine reflux (33%) and upright reflux (25%). Abnormal PHM was found in 26/43 symptomatic cases (60%) and also among 34/71 asymptomatic cases (48%) (P=0.19). CONCLUSION: Manometric abnormalities were common in obesity type III patients, the most frequent being hypotensive LES, followed by IEM. Most patients were asymptomatic. There was no correlation between the finding of motor abnormalities and the presence of symptoms. More than half the patients had abnormal reflux at PHM. We found no significant correlation between abnormal reflux and the presence of symptoms.

Distúrbios funcionais esofágicos na avaliação pré-operatória de cirurgia bariátrica / Esophageal functional disorders in the pre-operatory evaluation of bariatric surgery

ABSTRACT BACKGROUND: Obesity is an independent risk factor for esophageal symptoms, gastroesophageal reflux disease (GERD), and motor abnormalities. When contemplating bariatric surgery, patients with obesity type III undergo esophagogastroduodenoscopy (EGD) and also esophageal manometry (EMN), and prolonged pHmetry (PHM) as part of their pre-operative evaluation. OBJECTIVE: Description of endoscopy, manometry and pHmetry findings in patients with obesity type III preparing for bariatric surgery, and correlation of these findings with the presence of typical GERD symptoms. METHODS: Retrospective study in which clinical symptoms of GERD were assessed, focusing on the presence of heartburn and regurgitation. All patients underwent EMN, PHM and most of them EGD. RESULTS: 114 patients (93 females-81%), average age 36 years old, average BMI of 45.3, were studied. Typical GERD symptoms were referred by 43 (38%) patients while 71 (62%) were asymptomatic. Eighty two patients (72% of total) underwent EGD and 36 (42%) evidenced esophageal abnormalities. Among the abnormal findings, hiatal hernia was seen in 36%, erosive esophagitis (EE) in 36%, and HH+EE in 28%. An abnormal EMN was recorded in 51/114 patients (45%). The main abnormality was a hypotensive lower esophageal sphincter (LES) in 32%, followed by ineffective esophageal motility in 25%, nutcracker esophagus in 19%, IEM + hypotensive LES in 10%, intra-thoracic LES (6%), hypertensive LES (4%), aperistalsis (2%) and achalasia (2%). Among the 43 symptomatic patients, 23 (53%) had abnormal EMN and 31/71 asymptomatic cases (44%) also presented this finding (P=0.30). PHM showed abnormal reflux in 60/114 patients (53%), with a predominance of bi-positional reflux (42%), followed by supine reflux (33%) and upright reflux (25%). Abnormal PHM was found in 26/43 symptomatic cases (60%) and also among 34/71 asymptomatic cases (48%) (P=0.19). CONCLUSION: Manometric abnormalities were common in obesity type III patients, the most frequent being hypotensive LES, followed by IEM. Most patients were asymptomatic. There was no correlation between the finding of motor abnormalities and the presence of symptoms. More than half the patients had abnormal reflux at PHM. We found no significant correlation between abnormal reflux and the presence of symptoms.

RESUMO CONTEXTO: A obesidade é fator de risco independente para sintomas esofagianos, doença do refluxo gastroesofágico (DRGE) e alterações motoras. Pacientes com obesidade tipo III, candidatos à cirurgia bariátrica foram submetidos a endoscopia digestiva alta (EDA) e também realizaram esofagomanometria (EMN) e pHmetria prolongada (PHM) como parte da avaliação pré-operatória. OBJETIVO: Em um grupo de pacientes com obesidade tipo III em pré-operatório de cirurgia bariátrica, descrever os achados endoscópicos, manométricos e pHmétricos, correlacionando-os com a presença de sintomas típicos de DRGE. MÉTODOS: Estudo retrospectivo, de pacientes com obesidade tipo III, candidatos a cirurgia bariátrica. A avaliação clínica focalizou a presença de sintomas típicos de DRGE (pirose/regurgitação); todos foram submetidos a EMN, PHM e a maior parte à EDA, realizada previamente. RESULTADOS: Foram incluídos 114 pacientes, 93 (81%) do sexo feminino, média de idade de 36 anos e IMC médio de 45,3. Sintomas típicos de refluxo foram referidos por 43 (38%) pacientes e 71 (62%) eram assintomáticos. EDA foi realizada por 82 (72%) pacientes, havendo anormalidades esofagianas em 36 (42%). Entre os anormais, havia hérnia hiatal (HH) em 36%, esofagite erosiva (EE) em 36% e HH + EE em 28%. A EMN foi anormal em 51/114 (45%). Entre os anormais, predominou o esfíncter esofagiano inferior (EEI) hipotenso em 32%, seguido por motilidade esofagiana ineficaz (MEI) em 25%, esôfago em quebra-nozes (19%), EEI hipotenso + MEI (10%), EEI intra-torácico (6%), EEI hipertenso (4%), aperistalse (2%) e acalasia (2%). Dentre os 43 sintomáticos, 23 (53%) apresentavam EMN anormal, sendo que em 31 dos 71 (44%) assintomáticos a EMN também era anormal (P=0,30). A PHM revelou refluxo anormal em 60 (53%) pacientes. Predominou o refluxo anormal biposicional (42%) seguido do refluxo supino (33%) e refluxo ereto (25%). Dentre os 43 pacientes sintomáticos, 26 (60%) apresentavam PHM anormal, sendo que em 34 dos 71 assintomáticos a PHM também era anormal (48%) - P=0,19. CONCLUSÃO: Alterações manométricas foram comuns em obesidade tipo III, sendo as mais frequentes o EEI hipotenso, seguida de motilidade ineficaz. A maioria dos pacientes era assintomática. Mais da metade dos pacientes apresentou refluxo anormal à PHM. Não houve diferença significativa entre o achado de refluxo anormal e a presença de sintomas. Não houve relação entre o achado de alterações motoras e a presença de sintomas.

Prevalência de queixas dispépticas em pacientes com doenças do refluxo erosiva e não-erosiva / Prevalence of dyspeptic complaints in patients with erosive and non-erosive reflux diseases

Racional- A doença do refluxo gastroesofágico apresenta grande variedade de manifestações clínicas, sendo que muitos pacientes referem queixas dispépticas. Objetivo- avaliar a prevalência de queixas dispépticasem pacientes com a doença do refluxo erosiva e doença do refluxo não-erosiva. Pacientes e métodos- foram revistas as fichas de exame de pacientes submetidos à esofagomanometria e pHmetria prolongada na investigação de doença do refluxo gastroesofágico (pirose como queixa principal), sendo selecionadas as que continham informações a respeito de queixas dispépticas. Todos haviam realizado previamente endoscopiadigestiva alta. Foram selecionados pacientes com doença do refluxo erosiva (esofagite pela classifi cação de Savary-Miller), e com doença do refluxo não-erosiva (sem esofagite e com pHmetria prolongada anormal). Resultados- duzentos e cinquenta e três pacientes preencheram os critérios de inclusão, sendo 145 com doença do refluxo erosiva e 108 com doença do refluxo não-erosiva. Queixas dispépticas estavam presentes em 93 (64%) dos pacientes com doença do refluxo erosiva e em 86 (79,6%) dos pacientes com doença do refluxo não-erosiva. Conclusão- a prevalência das queixas dispépticas foi elevada nos dois grupos de pacientes, sendo maior no grupo de doença do refluxo não-erosiva (p= 0,007).

Rationale- gastroesophageal reflux disease presents a significant number of clinical symptoms, and many patients refer to dyspeptic complaints. Objective- assess the prevalence of dyspeptic complaints in patients with erosive and non-erosive reflux disease. Patients and methods- The exam charts of patients submitted to esophageal manometry and prolongedesophageal pH test in gastroesophageal reflux disease investigations (pyrosis as main complaint) were revised and those containing information on dyspeptic complaints selected. All patients had previously had upper digestive endoscopy. Patients with erosive reflux disease (esophagitisaccording to Savary-Miller classification) and with non-erosive reflux disease (without esophagitis and with abnormal prolonged esophageal pH test) were selected. Results- two hundred and fifty three patientsmet the inclusion criteria, out of whom 145 had erosive reflux disease and 108 with non-erosive reflux disease. Dyspeptic complaints were mentioned by 93 (64%) patients with erosive reflux disease and 86 (79.6%) of patients with non-erosive reflux disease. Conclusion- the prevalence of dyspeptic complaints was high in the two groups of patients, but higher in the NERD group, in which a significant difference was found (p= 0.007).

[Higher prevalence of obesity in erosive gastroesophageal reflux disease]. / Maior prevalência de obesidade na doença do refluxo gastroesofagiano erosiva.

CONTEXT: Weight loss is commonly recommended as a treatment for gastroesophageal reflux; however, a relationship between excessive body weight and gastroesophageal reflux disease is not well established. OBJECTIVES: To evaluate the prevalence of obesity and over-weight in patients with heartburn, with and without erosive esophagitis; to analyze the prevalence of hiatal hernia and the intensity of abnormal gastroesophageal reflux in both groups of patients, and its relation to body mass index. METHODS: The data of pH monitoring of 362 individuals with heartburn were evaluated retrospectively. All patients had an upper gastrointestinal endoscopy and erosive esophagitis was defined by the presence of macroscopic erosion on the esophageal mucosa. Hiatal hernia was considered when the gastroesophageal junction was positioned 2 cm or more above the diaphragm. Patients with Barrett's esophagus or esophageal peptic stenosis were excluded. The population was categorized according to body mass index as normal weight (body mass index between 20 and 24.9); over-weight (between 25 and 29.9), and obese (greater than 30). The diagnosis as well as the intensity of abnormal gastroesophageal reflux were obtained through the analysis of the results of pH monitoring in patients with and without erosive esophagitis and in the various categories of body mass index. RESULTS: Among the 362 patients there were 148 (41%) with erosive esophagitis and 214 (59%) without erosive esophagitis, while the pH monitoring was abnormal in 100% and 57%, respectively. Among the 148 individuals with erosive esophagitis (61% male, median age 50 years), 41 (28%) had normal weight, 82 (55%) had over-weight and 25 (17%) were obese. There were 88 (60%) patients with hiatal hernia, which was present in 29 (71% of patients with normal weight), 45 (55% of patients with over-weight) and 14 (56% of obese individuals). In 121 patients without erosive esophagitis who had abnormal pH monitoring, diagnosed as non erosive reflux disease (38% male, median age 50 years), 51 (42%) patients had normal weight, 55 (46%) had over-weight and 15 (12%) were obese. Hiatal hernia was detected in 52 out of 121 (43%) patients and in 21 (41%) out of 51 individuals with normal weight, 24 (44%) of over-weight and 7 (47%) of obese. In the group of 93 patients without erosive esophagitis and normal pH monitoring (29% male, median age 43 years), 26 (28%) had hiatal hernia and there were 43 (46%) individuals with normal weight, 38 (41%) with over-weight and 12 (13%) were obese. The number of patients with obesity and over-weight was significantly higher in the group with erosive esophagitis compared to the ones without erosive esophagitis. The prevalence of hiatal hernia was also superior in the erosive reflux disease patients. The reflux intensity and the prevalence of hiatal hernia were similar in patients with normal weight, over-weight and obesity in the group with erosive reflux disease and non-erosive reflux disease. CONCLUSION: There was a greater prevalence of obesity and over-weight in the group of patients with erosive esophagitis compared to patients with non-erosive reflux disease. There was no difference in reflux intensity measurements in any of the body mass index categories, in both groups. Although there was a major prevalence of hiatal hernia in the group of erosive reflux disease patients, this superiority was not extended to the categories of excessive weight in both groups.

Maior prevalência de obesidade na doença do refluxo gastroesofagiano erosiva / Higher prevalence of obesity in erosive gastroesophageal reflux disease

CONTEXTO: Existe uma noção geral de que indivíduos obesos desenvolvem mais freqüentemente a doença do refluxo gastroesofagiano, sendo a orientação de perder peso parte integrante do seu tratamento. Entretanto, uma base científica para esta associação não está plenamente estabelecida. OBJETIVOS: Avaliar a prevalência de obesidade e sobrepeso em pacientes com sintomas típicos de refluxo, com e sem esofagite erosiva. Analisar a prevalência de hérnia hiatal e a intensidade do refluxo anormal em relação ao índice de massa corporal nos dois grupos de pacientes. MÉTODOS: Foram examinadas retrospectivamente 362 pHmetrias de pacientes com pirose, todos com endoscopia digestiva alta prévia, definindo-se esofagite erosiva pela presença de erosões esofagianas macroscópicas e hérnia de hiato quando à junção esôfago-gástrica estava 2 cm ou mais acima do pinçamento diafragmático. Pacientes com esôfago de Barrett ou estenose péptica foram excluídos. A população foi dividida em três grupos de acordo com o índice de massa corpórea: peso normal, com índice de massa corporal entre 20 e 24,9, sobrepeso, com 25 e 29,9 e obesos com índice superior a 30. O diagnóstico de refluxo gastroesofagiano anormal com sua intensidade foi avaliado de acordo com os resultados de pHmetrias, analisados nos grupos de pacientes com e sem esofagite erosiva em relação ao índice de massa corporal. RESULTADOS: Entre os 362 pacientes, havia 148 (41 por cento) com e 214 (59 por cento) sem esofagite erosiva, sendo a pHmetria anormal em 100 por cento e 57 por cento dos pacientes, retrospectivamente. Entre os 148 (61 por cento do sexo masculino, mediana de idade de 50 anos), 41 (28 por cento) apresentavam peso normal, 82 (55 por cento) sobrepeso e 25 (17 por cento) eram obesos. Havia 88 (60 por cento) com hérnia hiatal, sendo 29 (71 por cento dos pacientes com peso normal), 45 (55 por cento dos com sobrepeso) e 14 (56 por cento dos obesos). Nos 121 indivíduos sem esofagite erosiva e...

CONTEXT: Weight loss is commonly recommended as a treatment for gastroesophageal reflux; however, a relationship between excessive body weight and gastroesophageal reflux disease is not well established. OBJECTIVES: To evaluate the prevalence of obesity and over-weight in patients with heartburn, with and without erosive esophagitis; to analyze the prevalence of hiatal hernia and the intensity of abnormal gastroesophageal reflux in both groups of patients, and its relation to body mass index. METHODS: The data of pH monitoring of 362 individuals with heartburn were evaluated retrospectively. All patients had an upper gastrointestinal endoscopy and erosive esophagitis was defined by the presence of macroscopic erosion on the esophageal mucosa. Hiatal hernia was considered when the gastroesophageal junction was positioned 2 cm or more above the diaphragm. Patients with Barrett's esophagus or esophageal peptic stenosis were excluded. The population was categorized according to body mass index as normal weight (body mass index between 20 and 24.9); over-weight (between 25 and 29.9), and obese (greater than 30). The diagnosis as well as the intensity of abnormal gastroesophageal reflux were obtained through the analysis of the results of pH monitoring in patients with and without erosive esophagitis and in the various categories of body mass index. RESULTS: Among the 362 patients there were 148 (41 percent) with erosive esophagitis and 214 (59 percent) without erosive esophagitis, while the pH monitoring was abnormal in 100 percent and 57 percent, respectively. Among the 148 individuals with erosive esophagitis (61 percent male, median age 50 years), 41 (28 percent) had normal weight, 82 (55 percent) had over-weight and 25 (17 percent) were obese. There were 88 (60 percent) patients with hiatal hernia, which was present in 29 (71 percent of patients with normal weight), 45 (55 percent of patients with over-weight) and 14 (56 percent of obese...

[Prevalence of supraesophageal manifestations in patients with gastroesophageal erosive and non-erosive reflux disease]. / Prevalência de queixas supra-esofágicas em pacientes com doenças do refluxo erosiva e não-erosiva.

BACKGROUND: Respiratory, ear-nose and throat complaints, chest pain and dysphagia can be a part of clinical manifestations of gastroesophageal reflux disease. The first two are named supraesophageal manifestations of gastroesophageal reflux disease. Controversy about the prevalence of these clinical manifestations in patients with non-erosive and erosive gastroesophageal reflux disease exists. AIMS: Evaluate the prevalence of supraesophageal manifestations in patients with erosive and non-erosive gastroesophageal reflux disease. METHODS: Files from patients submitted to upper endoscopy, esophageal manometry and pH monitoring for the investigation of gastroesophageal reflux disease (heartburn as the chief complaint) were reviewed and respiratory and ear, nose and throat symptoms were recorded. Patients with erosive disease (grades I to III according to Savary-Miller classification) and with non-erosive disease (normal endoscopy with abnormal pH monitoring were selected. Statistical analysis included the chi-square test. RESULTS: Two hundred and eighty patients fulfilled the inclusion criteria being 162 with erosive disease (70% with grade I esophagitis) and 118 with non-erosive disease. Overall, 88 patients had ear, nose and throat symptoms (31%), the more frequent were hoarseness and clearing and 42, respiratory manifestations (15%), being cough the more prevalent. In the ear, nose and throat symptoms group, 45 were erosive disease (28%) and 43 non-erosive disease (36.4%). As for the respiratory symptom group, 21 patients (13%) were erosive disease and 21 (18%) were non-erosive disease. CONCLUSION: There was no difference in the prevalence of supraesophageal manifestations between patients with gastroesophageal erosive and non-erosive reflux disease.

[Relationship between the size of hiatal hernia and esophageal acid exposure time in erosive and non-erosive reflux disease]. / Relação entre o tamanho de hérnia hiatal e tempo de exposição ácida esofágica nas doenças do refluxo erosiva e não-erosiva.

BACKGROUND: In the last few years studies have demonstrated that hiatal hernias have an important role in the pathogenesis of reflux disease, promoting reflux by many different mechanisms, emphasizing that the larger the hiatal hernia, the higher the reflux intensity and erosive esophagitis prevalence. AIM: To correlate the size of hiatal hernias (small or large) with reflux intensity (measured by pH monitoring parameters) in patients with non-erosive and erosive reflux disease. PATIENTS AND METHODS: We reviewed pH monitoring from patients with typical reflux symptoms (heartburn) previously submitted to upper endoscopy. Reflux intensity was measured by the % of total time of pH < 4 (%TT) and by % of time of pH < 4 in upright (%UT) and supine (%ST) positions. Patients were classified as non-erosive reflux disease if no erosive esophagitis was found in endoscopy and pH monitoring was abnormal and as erosive reflux disease if they had erosive esophagitis. Hiatal hernias were classified as small if their size ranged from 2 to 4 cm and large if > or = 5 cm. RESULTS: A total of 192 patients were included, being 115 in erosive reflux disease group and 77 in non-erosive reflux disease group. In erosive reflux disease patients, there were 94 (81%) with small hiatal hernias and 21 (19%) with large ones and in non-erosive reflux disease patients there were 66 (85%) with small and 11(15%) with large hiatal hernias. In erosive reflux disease group, the %TT, %UT and %ST were of 13.1 +/- 7.1; 13.4 +/- 7.4 and 12.3 +/- 11.5 in small hiatal hernias and 20.2 +/- 12.3; 17.8 +/- 14.1 and 20.7 +/- 14.1 in large hiatal hernias, respectively (P < 0.05 for %TT and %TS). In non-erosive reflux disease patients, %TT, %UT and %ST were 9.6 +/- 4.8; 10.8 +/- 6.8 and 8.6 +/- 7.3 in small hiatal hernias and of 14.6 +/- 13.3; 11.2 +/- 7.5 and 18.1 +/- 21.0 in large hiatal hernias respectively (P < 0.05 for %TT and %TS). CONCLUSION: Large hiatal hernias increase acid exposure time only in supine position in erosive esophagitis patients and in non-erosive patients.

Relação entre o tamanho de hérnia hiatal e tempo de exposição ácida esofágica nas doenças do refluxo erosiva e não-erosiva / Relationship between the size of hiatal hernia and esophageal acid exposure time in erosive and non-erosive reflux disease

RACIONAL: Nos últimos anos, estudos têm demonstrado a importância da hérnia hiatal na etiopatogenia da doença do refluxo gastroesofágico, atuando por vários mecanismos, sendo enfatizado que quanto maior a hérnia, maior seria a possibilidade de refluxo e esofagite. OBJETIVOS: Avaliar por parâmetros de pHmetria prolongada, se a presença de hérnias volumosas se correlaciona com maior intensidade do refluxo, em pacientes com a doença do refluxo erosiva e doença do refluxo não-erosiva. PACIENTES E MÉTODOS: Foram revistas as pHmetrias prolongadas anormais consecutivas de pacientes em investigação de doença do refluxo gastroesofágico (pirose como queixa principal) e analisadas as percentagens de tempo total ( por centoTT), em posição ereta ( por centoTE) e posição supina ( por centoTS) com pH <4. Todos haviam realizado previamente endoscopia digestiva alta. Selecionaram-se pacientes com doença do refluxo erosiva (esofagite pela classificação de Savary-Miller) e com doença do refluxo não-erosiva (sem esofagite, com pHmetria prolongada anormal), todos com hérnia hiatal. Considerou-se hérnia hiatal não volumosa aquelas entre 2 e <5 cm e hérnia hiatal volumosa quando de tamanho =/>5 cm. RESULTADOS: Cento e noventa e dois pacientes preencheram os critérios de inclusão, sendo 115 com doença do refluxo erosiva e 77 com doença do refluxo não-erosiva. No primeiro grupo, 94 (81 por cento) pacientes apresentavam hérnias hiatais não-volumosas, enquanto que 21 (19 por cento) apresentavam hérnias hiatais volumosas. No grupo com doença do refluxo não-erosiva, 66 (85 por cento) pacientes apresentavam hérnia hiatal não-volumosa e 11 (15 por cento) hérnia hiatal volumosa. Na doença do refluxo erosiva, as por centoTT, por centoTE e por centoTS foram de 13,1 + 7,1, 13,4 + 7,4 e 12,3 + 11,5 nas hérnias hiatais não-volumosas, aumentando para 20,2 + 12,3, 17,8 + 14,1 e 20,7 + 14,1 nas hérnias hiatais volumosas, respectivamente, sendo este aumento estatisticamente significante nos tempos total e supino. Na doença do refluxo não-erosiva, as por centoTT, por centoTE e por centoTS foram de 9,6 + 4,8, 10,8+ 6,8 e 8,6 + 7,3 nas hérnias hiatais não volumosas e de 14,6 + 13,3, 11,2 + 7,5 18,1 + 21,0 nas hérnias volumosas, respectivamente, com significância semelhante à anterior. CONCLUSAO: As hérnias volumosas aumentam o tempo de exposição ácida esofágica exclusivamente na posição supina nos pacientes com doença do refluxo erosiva e doença do refluxo não-erosiva.

Ineffective esophageal motility in gastroesophageal erosive reflux disease and in nonerosive reflux disease: are they different?

BACKGROUND: In GERD patients, ineffective esophageal motility (IEM), a hypocontractile disorder, is the most common motor abnormality. IEM has been associated with reflux in both the supine and upright position, prolonged esophageal clearance, and delayed of bolus transport. IEM has been equally present in erosive and in nonerosive GERD. GOAL: Considering that reflux has been found to be more severe in erosive GERD than in nonerosive GERD patients and that IEM delays esophageal clearance, our hypothesis is that patients with erosive GERD have more severe IEM than those with nonerosive disease. STUDY: A retrospective review of consecutive manometries of patients with the chief complaint of heartburn and a diagnosis of IEM were performed, and patients with both erosive and nonerosive GERD were selected. According to the number of ineffective contractions, IEM was stratified into three groups: 30% to 40%, mild; 50% to 60%, moderate; and greater than 60%, severe. We also registered the number of low amplitude, failed, and normal waves in each manometry of both groups. We evaluated 110 patients: 70 (64%) with erosive GERD and 40 (36%) with nonerosive GERD. The percentage of mild, moderate and severe IEM was similar in erosive and in nonerosive GERD patients, as well the number of low amplitude, failed or normal waves (P < 0.5). CONCLUSION: There were no differences between the severity of IEM in erosive and in nonerosive GERD patients.