COVID-19 and the digestive system: implications for transforming care delivery.

The pandemic caused by SARS-CoV-2 has posed an unprecedented challenge to health systems, leading in many countries to the collapse of health care and a lack of preventive measures both for the most vulnerable sections of the population and among healthcare professionals.

Gobernar en tiempos turbulentos con afán de servir / No disponible

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Leading in turbulent times with the aim to serve.

The year 2020 will be remembered for the SARS-CoV-2 pandemic, which has been the greatest ever healthcare crisis for the National Health Service. In Spain there have been more than 1,556,730 cases and 42,619 deaths, as well as 20,268 elderly people who have died in nursing homes and 63,000 healthcare professionals infected (as of November 2020).

Defining authorship and contributorship criteria: transparency and visibility.

The complexity and research publications have expanded exponentially.The role of authors and collaborators need to be clarified according with the standards of the International Committee of medical Journal Editors (ICMJE). New projects as Contributor Role Taxonomy (CRediT), has been launched in order to provide credit and transparency to the authors, readers and evaluation agencies.

Defining authorship and contributorship criteria: transparency and visibility

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Effect of the manipulation of the duodenal papilla during double balloon enteroscopy.

AIM: To determine the hypothesis that inflating the balloons in the duodenal papilla determines changes in the biochemical markers of pancreatitis. METHODS: Four groups of pigs were used: Group papilla (GP), the overtube's balloon was inflated in the area of the papilla; GP + double balloon enteroscopy (GP + DBE), the overtube's balloon was kept inflated in the area of the papilla for 20 min before a DBE; Group DBE (GDBE), DBE was carried out after insuring the balloon's inflation far from the pancreatic papilla; and Group control (GC). Serum concentrations of amylase, lipase and C-reactive protein (CRP) were evaluated. Pancreases were processed for histopathology examination. RESULTS: Main changes occurred 24 h after the procedure compared with baseline levels. Amylase levels increased significantly in GP (59.2% higher) and were moderately higher in groups GP + DBE and GDBE (22.7% and 20%, respectively). Lipase increased in GP and GP + DBE, whereas it hardly changed in GDBE and in GC. CRP increased significantly in GP, GP + DBE and GDBE, while no changes were reported for GC. No statistically significant difference between groups GP and GP + DBE was found for the histopathological findings, except for vacuolization and necrosis of the pancreatic parenchyma that was higher in GP than in GP + DBE. CONCLUSION: The manipulation of the duodenal papilla by the inflated overtube's balloon during DBE causes pancreatic structural damage and increased biochemical markers associated with pancreatitis.

Endoscopia urgente por hemorragia digestiva tras cirugía bariátrica. Algoritmo terapéutico / Emergency endoscopy for gastrointestinal bleeding after bariatric surgery. Therapeutic algorithm

OBJETIVOS: La hemorragia digestiva alta (HDA) es una potencial complicación tras la cirugía bariátrica, con una incidencia entre el 2 y el 4%. El objetivo de este estudio es presentar nuestra incidencia de HDA tras cirugía bariátrica, su forma de presentación y su manejo mediante un algoritmo terapéutico. Pacientes y método: Estudio observacional prospectivo de una serie de 300 cirugías bariátricas por laparoscopia de manera consecutiva, desde enero del 2004 hasta diciembre del 2012. Se recogen datos demográficos, forma de presentación, diagnóstico y tratamiento de la HDA. En 280 pacientes se practicó bypass gástrico según la técnica de Wittgrove modificada, con anastomosis circular en 265 y anastomosis longitudinal en 15. En 20 pacientes se practicó gastrectomía vertical. RESULTADOS: Aparecieron 27 casos (9%) de HDA tratados con: cirugía en un caso por inestabilidad hemodinámica; con gastroscopia diagnóstica-terapéutica en 13 casos (en 2 casos, 2 veces); en 10 de ellos, apareció de forma precoz (1-6 días) cuyo origen fue la línea de sutura de la anastomosis gastroyeyunal (GY) y en 3 de forma tardía, a los 15-20 días, siendo su origen una úlcera en la boca anastomótica. En el resto (13 pacientes), el manejo fue de forma conservadora. CONCLUSIONES: Aunque el manejo conservador de la HDA resuelve la mayoría de los casos, la clínica y la forma de presentación deben alertarnos, por lo que, en casos graves de sangrado, se requerirá de una endoscopia urgente. Es importante un equipo multidisciplinar y una comunicación estrecha entre cirujanos y endoscopistas para el manejo de esta seria complicación

OBJECTIVE: Gastrointestinal bleeding (GB) is a potential complication after bariatric surgery and its frequency is around 2-4% according to the literature. The aim of this study is to present our experience with GB after bariatric surgery, its presentation and possible treatment options by means of an algorithm. PATIENTS AND METHOD: From January 2004 to December 2012, we performed 300 consecutive laparoscopic bariatric surgeries. A total of 280 patients underwent a laparoscopic Roux en Y gastric bypass with creation of a gastrojejunal anastomosis using a circular stapler type CEAA No 21 in 265 patients and with a linear stapler in 15 patients. Demographics, clinical presentation, diagnostic evaluation and treatment were reviewed. A total of 20 patients underwent a sleeve gastrectomy. RESULTS: Twenty-seven cases (9%) developed GB. Diagnosis and therapeutic endoscopy was required in 13 patients. The onset of bleeding occurred between the 1st-6th postop days in 10 patients, and the origin was at the gastrojejunostomy staple-lines, and 3 patients had bleeding from an anastomotic ulcer 15-20 days after surgery. All other patients were managed non-operatively. CONCLUSION: Conservative management of gastrointestinal bleeding is effective in most cases, but endoscopy with therapeutic intent should be considered in patients with severe or recurrent bleeding. Multidisciplinary postoperative follow- up is very important for early detention and treatment of this complication

Ischemic etiopathogenesis as the possible origin of post-double baloon enteroscopy pancreatitis. A porcine model study.

The aim is to evaluate the pancreatic vascular-ischemic effects related to double balloon enteroscopy in the porcine model as a possible etiopathogenesis of post-enteroscopic pancreatitis. For this reason we carry out two independent experiments in a porcine animal model. In the first arm protocol (group I), 10 animals underwent 90 minutes of oral enteroscopy with 7 days follow-up.The levels of amylase, lipase and C-reactive protein were measured at T0 basal-T1 -90 min, T2-24, T3-7 days. Also we perform upper gastrointestinal endoscopy in a control group. At 7 days, the animals of experimental protocol-I had their pancreases removed for a pathological and immunohistochemical study to evaluate vascular epithelial growth factor (VEGF) expression.The second experimental protocol in this study aims to evaluate possible changes in vascular topography due to the double balloon enteroscopy (DBE). Group-II (10 animals) underwent oral enteroscopy and selective angiography of the cranial mesenteric artery and celiac trunk. None of the group I or control group animals presented pancreatitis, although the biochemical results for group-I showed increases in the levels of amylase, lipase and C reactive protein at 24 hours. The microscopic study for group-I showed pancreatic necrotic foci and positive VEGF expression, though these changes were not expressed in the control group.These foci were found in 50% of the group I animals and in relation to the total of the parenchyma were quantified at 6% of the pancreas. The results for group-II showed that the enteroscopy caused mobilization of the mesenteric vascular axis, with signs of both intestinal and pancreatic hypoperfusion. The conclusions of this study are that, after enteroscopy in the porcine model, pancreatic necrotic foci are produced, in addition to ischemic phenomena causing VEGF expression. This could be related to episodes of visceral hypoperfusion caused by vascular alterations on a topographic level. This can be related to the possible ischemic etiopathogenesis described for post-enteroscopic pancreatitis.

Ischemic etiopathogenesis as the possible origin of post-double baloon enteroscopy pancreatitis. A porcine model study / Etiopatogénesis isquémica como posible origen de la pancreatitis secundaria a la enteroscopia de doble balón. Estudio en un modelo porcino

The aim is to evaluate the pancreatic vascular-ischemic effects related to double balloon enteroscopy in the porcine model as a possible etiopathogenesis of post-enteroscopic pancreatitis. For this reason we carry out two independent experiments in a porcine animal model. In the first arm protocol (group I), 10 animals underwent 90 minutes of oral enteroscopy with 7 days follow-up. The levels of amylase, lipase and C-reactive protein were measured at T0 basal-T1 -90 min, T2-24, T3-7 days. Also we perform upper gastrointestinal endoscopy in a control group. At 7 days, the animals of experimental protocol-I had their pancreases removed for a pathological and immunohistochemical study to evaluate vascular epithelial growth factor (VEGF) expression. The second experimental protocol in this study aims to evaluate possible changes in vascular topography due to the double balloon enteroscopy (DBE). Group-II (10 animals) underwent oral enteroscopy and selective angiography of the cranial mesenteric artery and celiac trunk. None of the group I or control group animals presented pancreatitis, although the biochemical results for group-I showed increases in the levels of amylase, lipase and C reactive protein at 24 hours. The microscopic study for group-I showed pancreatic necrotic foci and positive VEGF expression, though these changes were not expressed in the control group. These foci were found in 50 % of the group I animals and in relation to the total of the parenchyma were quantified at 6 % of the pancreas. The results for group-II showed that the enteroscopy caused mobilization of the mesenteric vascular axis, with signs of both intestinal and pancreatic hypoperfusion. The conclusions of this study are that, after enteroscopy in the porcine model, pancreatic necrotic foci are produced, in addition to ischemic phenomena causing VEGF expression. This could be related to episodes of visceral hypoperfusion caused by vascular alterations on a topographic level. This can be related to the possible ischemic etiopathogenesis described for post-enteroscopic pancreatitis

Emergency endoscopy for gastrointestinal bleeding after bariatric surgery. Therapeutic algorithm.

OBJECTIVE: Gastrointestinal bleeding (GB) is a potential complication after bariatric surgery and its frequency is around 2-4% according to the literature. The aim of this study is to present our experience with GB after bariatric surgery, its presentation and possible treatment options by means of an algorithm. PATIENTS AND METHOD: From January 2004 to December 2012, we performed 300 consecutive laparoscopic bariatric surgeries. A total of 280 patients underwent a laparoscopic Roux en Y gastric bypass with creation of a gastrojejunal anastomosis using a circular stapler type CEAA No 21 in 265 patients and with a linear stapler in 15 patients. Demographics, clinical presentation, diagnostic evaluation and treatment were reviewed. A total of 20 patients underwent a sleeve gastrectomy. RESULTS: Twenty-seven cases (9%) developed GB. Diagnosis and therapeutic endoscopy was required in 13 patients. The onset of bleeding occurred between the 1(st)-6(th) postop days in 10 patients, and the origin was at the gastrojejunostomy staple-lines, and 3 patients had bleeding from an anastomotic ulcer 15-20 days after surgery. All other patients were managed non-operatively. CONCLUSION: Conservative management of gastrointestinal bleeding is effective in most cases, but endoscopy with therapeutic intent should be considered in patients with severe or recurrent bleeding. Multidisciplinary postoperative follow- up is very important for early detention and treatment of this complication.

Estenosis de la anastomosis gastroyeyunal en el bypass gástrico laparoscópico. Experiencia en una serie de 280 casos en 8 años / Gastrojejunal anastomotic stenosis after laparoscopic gastric bypass. Experience in 280 cases in 8 years

INTRODUCCIÓN: La estenosis de la anastomosis gastroyeyunal (GY) representa la complicación más frecuente en la cirugía de derivación gástrica por laparoscopia, llegando en algunas series a alcanzar el 15%. Presentamos nuestra incidencia de estenosis de la anastomosis GY en el bypass gástrico laparoscópico, su forma de presentación y su manejo a largo plazo. MATERIAL Y MÉTODO: Desde enero del 2004 hasta diciembre del 2012 se han realizado 280 bypass gástricos por la laparoscopia, según la técnica de Wittgrove modificada. La anastomosis GY circular se practicó con material de autosutura tipo CEAA n° 21 en 265 casos, en los restantes se realizó con una anastomosis longitudinal con grapadora lineal de 45 mm. A todos los pacientes con intolerancia persistente a la alimentación se les realizó tránsito baritado o gastroscopia. Cuando se evidenció estenosis GY (diámetro <10 mm), se procedió a dilatación neumática endoscópica. RESULTADOS: En 20 casos (7,1%) se desarrolló una estenosis GY, en 4 de ellos el diagnóstico inicial fue con tránsito baritado. Todos los casos fueron confirmados por gastroscopia. De ellos, 5 pacientes tenían antecedentes de hemorragia digestiva alta que precisaron esclerosis endoscópica de la línea de sutura de la anastomosis GY. Todos los casos se han resuelto mediante dilatación endoscópica, precisando en un caso 2 sesiones de dilatación, en otro caso 3 sesiones y el resto, una. No se han detectado reestenosis. Uno de los pacientes sufrió una perforación de úlcera postanastomótica. CONCLUSIONES: La estenosis de la anastomosis GY es una complicación frecuente tras el bypass gástrico en Y de Roux. Favorecida por anastomosis de pequeño calibre. La endoscopia es la piedra angular para el diagnóstico y tratamiento, pues resuelve la mayoría de casos, siendo rara la revisión quirúrgica

OBJETIVE: Gastrojejunal stricture (GYS), not only is a common complication after laparoscopic gastric bypass, but its frequency is about 15% according to bibliography. Our aim is to present our experience after 280 laparoscopic gastric bypass. PATIENTS AND METHOD: From January 2004 to December 2012, 280 patients underwent a laparoscopic Roux en Y gastric bypass with creation of the gastrojejunal anastomosis is performed with circular stapler type CEAA No 21 in 265 patients and with a linear stapler in 15 patients. In all patients with persistent feeding intolerance were performed barium transit and/or gastroscopy. When gastrojejunal stricture showed proceeded to endoscopic pneumatic dilation. RESULTS: Twenty cases (7.1%) developed a gastrojejunal stricture, in 4 of these cases the initial diagnosis was made by barium transit and all case were confirmed by endoscopy. Five patients had a history of digestive bleeding that required endoscopic sclerosis of the bleeding lesion. All cases were resolved by endoscopic dilatation. One patient suffered a perforation and a re-intervention. At follow-up has not been detected re-stricture. CONCLUSION: Structure at the gastrojejunal anastomosis after gastric bypass is the commonest complication early after surgery. Endoscopic balloon dilatation is a safe and effective therapy

Gastrojejunal anastomotic stenosis after laparoscopic gastric bypass. Experience in 280 cases in 8 years.

OBJECTIVE: Gastrojejunal stricture (GYS), not only is a common complication after laparoscopic gastric bypass, but its frequency is about 15% according to bibliography. Our aim is to present our experience after 280 laparoscopic gastric bypass. PATIENTS AND METHOD: From January 2004 to December 2012, 280 patients underwent a laparoscopic Roux en Y gastric bypass with creation of the gastrojejunal anastomosis is performed with circular stapler type CEAA No 21 in 265 patients and with a linear stapler in 15 patients. In all patients with persistent feeding intolerance were performed barium transit and/or gastroscopy. When gastrojejunal stricture showed proceeded to endoscopic pneumatic dilation. RESULTS: Twenty cases (7.1%) developed a gastrojejunal stricture, in 4 of these cases the initial diagnosis was made by barium transit and all case were confirmed by endoscopy. Five patients had a history of digestive bleeding that required endoscopic sclerosis of the bleeding lesion. All cases were resolved by endoscopic dilatation. One patient suffered a perforation and a re-intervention. At follow-up has not been detected re-stricture. CONCLUSION: Structure at the gastrojejunal anastomosis after gastric bypass is the commonest complication early after surgery. Endoscopic balloon dilatation is a safe and effective therapy.

Characterization of anal double balloon endoscopy in the dog.

Retrograde (anal) exploration of the canine small intestine by conventional endoscopy is restricted to the ileum, but double balloon endoscopy (DBE) has recently been validated using the oral approach. In this study, anal DBE was performed on nine healthy dogs to characterize the efficiency, exploration dynamics and safety of the technique. DBE was successful in all dogs; the average estimated insertion depth of the endoscope was about 2m and took approximately 1h to achieve. No complications or related adverse clinical effects were observed, and pancreatitis did not occur following the procedure. Anal DBE is viable and safe in the dog within the limits of the study, and has the potential to facilitate the diagnosis and treatment of gastrointestinal diseases, not only in portions of the colon and ileum, but also in portions of the distal jejunum.

An endoscopic technique for treating symptomatic distal jejunum obstruction by leaving the overtube in place.

Double balloon enteroscopy has a limitation for positioning an enteral stent in the distal jejunum through its long, narrow biopsy channel. When the distal end of its overtube is left in place close to the neoplasia with the enteroscope removed, if we push an enteral stent introduction system, it tends to form loops so the techniquecannot be performed with this instrument. However, the double balloon colonoscope has a shorter overtube length and using the same push-and-pull technique we can reach the distal jejunum with this instrument by inserting the delivery stent system without loops through its overtube. We present a patient with neoplastic obstruction in the distal jejunum with resolution of his symptoms after positioning an enteral stent.

An endoscopic technique for treating symptomatic distal jejunum obstruction by leaving the overtube in place / Una técnica endoscópica en el tratamiento de la obstrucción sintomática del yeyuno distal dejando en su lugar el sobretubo

Double balloon enteroscopy has a limitation for positioning an enteral stent in the distal jejunum through its long, narrow biopsy channel. When the distal end of its overtube is left in place close to the neoplasia with the enteroscope removed, if we push an enteral stent introduction system, it tends to form loops so the technique cannot be performed with this instrument. However, the double balloon colonoscope has a shorter overtube length and using the same push-and-pull technique we can reach the distal jejunum with this instrument by inserting the delivery stent system without loops through its overtube. We present a patient with neoplastic obstruction in the distal jejunum with resolution of his symptoms after positioning an enteral stent(AU)

Carbon dioxide insufflation safety in double-balloon enteroscopy: an experimental animal study.

AIM: The aim of the present study was to assess the safety and efficacy of CO(2) during double-balloon enteroscopy (DBE) in an experimental animal model study. In this study, insufflation with room air and with CO(2) was compared. METHODS: Twenty healthy swines were used. The animals were randomly allocated to two groups. The room air-DBE group was insufflated with room air, whereas the CO(2)-DBE group was insufflated with CO(2). Endoscopy duration was 90 min. The following parameters were measured during the study (basal, 30 min, 60 min, 90 min): invasive hemodynamic parameters, ventilatory parameters, arterial blood gases, exploration depth, as well as biochemical tests. Residual gas was evaluated at the end of DBE, at 180 min and 24 h after DBE. RESULTS: During the endoscopic exploration none of the animals showed hemodynamic, ventilatory or arterial blood gas alterations in the normal reference range for the swine species. The CO(2) group showed statistically significant differences over the room air group with lower post-procedure residual gas and greater depth of the small bowel explored. CONCLUSION: The use of CO(2) for insufflation during DBE was safe and no complications associated with CO(2) were observed. In addition, the use of CO(2) offers benefits over the use of room air for insufflation during DBE.

Effect of double-balloon enteroscopy on pancreas: an experimental porcine model.

AIM: To evaluate the effect of double-balloon enteroscopy (DBE) on pancreas histology and levels of pancreatic enzymes. METHODS: Conventional upper gastrointestinal endoscopy was performed on five control pigs. Oral DBE was performed with an EN-450T5 enteroscope on 20 pigs. Two experimental groups (10 pigs each) were defined according to DBE duration: 90 min for Group 1 and 140 min for group 2. During oral insertion, the balloons were not inflated in the descending part of the duodenum to avoid the minor duodenal papilla. Serum amylase, lipase and C-reactive protein (CRP) levels were monitored before the procedure and repeated every 30 min until the exploration was finished, as well as 24 h and 7 d after. After the procedure and for a total of 7 d, the pigs were observed twice a day for signs of decreased activity, irritability, vomiting or anorexia. Gross and microscopic examination of the pancreas was performed on day 7. RESULTS: All animals tolerated DBE without clinical manifestations of acute pancreatitis. Experimental groups had higher levels of enzymes than the control group at 24 h. Throughout the exploration, the amylase levels increased significantly above the baseline 24 h after DBE, although the increase was not statistically significant and did not reach 20% of the baseline. An increase in lipase and CRP was observed at 24 h after the procedure, although by day 7, all enzymatic levels had returned to baseline. No differences between groups 1 and 2 were found for any enzyme and sampling site during and after the procedure. Similarly, no correlation between insertion depth and enzyme levels was observed. Direct in situ and post-removal inspection of the pancreas did not show any evidence of fluid collection, abscesses or hemorrhage. Histological examination of the pancreas from groups 1 and 2 revealed the existence of focal areas (0.14-0.26 mm2) of ischemic necrosis in 47.4% of the animals. In the pigs with damaged pancreas, the left lobe (tail) was always affected. However, this only happened in 83.3% of the samples from the right lobe (head) and in 33.3% of the samples from the body of the pancreas. Significant differences were found between the left lobe (tail) and the body for the percentage of affected pancreas. Both the size of the lesions and the percentage of affected pancreas were higher in the left pancreatic lobe (tail). The presence of the lesions was not related to the exploration length. CONCLUSION: The increase in pancreatic enzymes after DBE could be related to focal points of pancreatic ischemic necrosis due to mechanical stress.

Situación actual del manejo de la hemorragia digestiva alta no varicosa en España / Current management of nonvariceal upper gastrointestinal bleeding in Spain

Introducción La mortalidad en la hemorragia digestiva alta no varicosa (HDA-NV) no ha variado. Se necesita conocer más información para mejorar las estrategias de tratamiento. Los objetivos de este estudio fueron: a) describir el perfil de presentación de los episodios de HDA-NV; b) el manejo clínico según práctica clínica habitual, y c) establecer cuáles son los resultados clínicos asociados a los tratamientos endoscópicos y médicos en España. Métodos ENERGIB fue un estudio retrospectivo de cohortes que recogió información del manejo y forma de presentación de HDA-NV en Europa. Presentamos los datos relativos a España. Los pacientes se trataron según la práctica clínica habitual. Para las variables cuantitativas se calculó la media y la desviación estándar y para las categóricas se calcularon frecuencias absolutas y relativas. Resultados Los pacientes (n = 403) fueron hombres (71%), con edad media 65 años, asociaron comorbilidad (62,5%). Los equipos encargados de su manejo fueron gastroenterólogos (57,1%) o médicos internistas (25,1%). Los inhibidores de la bomba de protones se usaron de forma empírica preendoscopia en un 80% de los casos. El 6,4% presentó persistencia y el 6,7% resangrado después de la endoscopia. La tasa de mortalidad en los 30 días posteriores fue del 3,5%.ConclusionesEste estudio permite conocer el perfil de presentación de los episodios de HDA-NV en España y el manejo en práctica clínica habitual. Este se ajusta a los estándares propuestos por las recientes guías de práctica clínica. Entre otros datos destaca que los pacientes con hemorragia son cada vez de edad más avanzada y presentan un mayor número de enfermedades asociadas, lo que podría explicar que la mortalidad se haya mantenido estable a pesar de los evidentes avances en el manejo de esta entidad (AU)

Background Mortality related to nonvariceal upper gastrointestinal bleeding (NVUGIB) has not changed. More information is needed to improve the management of this entity. The aims of this study were: a) to determine the characteristics of bleeding episodes, b) to describe the clinical approaches routinely used in NVUGIB, and c) to identify adverse outcomes related to endoscopic or medical treatments in Spain. Methods The European survey of nonvariceal upper GI bleeding (ENERGiB) was an observational, retrospective cohort study on NVUGIB with endoscopic evaluation carried out across Europe. The present study focused on Spanish patients in the ENERGiB study. The patients were managed according to routine care. The mean and standard deviation were calculated for quantitative variables and absolute and relative frequencies were calculated for categorical variables. Results Patients (n=403) were mostly men (71%), with a mean age of 65 years, and co-morbidities (62.5%). Most of the patients were managed by gastroenterologists (57.1%) or internal medicine teams (25.1%). A proton pump inhibitor was used empirically in 80% before endoscopy. Bleeding persistence occurred in 6.4% and recurrence in 6.7%. The mortality rate at 30 days was 3.5%.ConclusionsThis study contributes to the characterization of Spanish patients and NVUGIB episodes in a real clinical setting and identifies the routine management of this entity, which is in line with the standards proposed by recent clinical practice guidelines. A notable finding was that age and the number of comorbidities in NVUGIB patients were increasing. These factors could explain the persistent mortality rate, despite the evident advances in the management of this entity (AU)