Efficacy of amoxicillin/clavulanic acid after surgical drainage of perianal abscess in the prevention of the development of anal fistula (PERIQxA study): study protocol for a multicenter randomized, double-blind clinical trial.

BACKGROUND: Anorectal fistula, which is a relatively common pathology, is the chronic manifestation of the acute perirectal process that forms an anal abscess. The development of a fistula after incision and drainage of an anal abscess is seen in approximately 26-37%. Its treatment is a relevant topic, and the role of the use of antibiotic therapy in its prevention remains controversial, after the publication of several studies with contradictory results and several methodological limitations. Our hypothesis is that the combination of amoxicillin and clavulanic acid will reduce the incidence of anal fistula. METHOD: The aim of this study is to evaluate the efficacy of antibiotherapy after surgical drainage of perianal abscess in the development of perianal fistula. The PERIQxA study is a multicenter, randomized, double-blind controlled trial. The study has been designed to include 286 adult patients who will be randomly (1:1) assigned to either the experimental (amoxicillin/clavulanic acid 875/125 mg TDS for 7 days) or the control arm (placebo). The primary outcome measure is the percentage of patients that develop perianal fistula after surgery and during follow-up (6 months). DISCUSSION: This clinical trial is designed to evaluate the efficacy and safety of amoxicillin/clavulanic in the prevention of perianal fistula. The results of this study are expected to contribute to stablish the potential role of antibiotherapy in the therapeutics for anal abscess. TRIAL REGISTRATION: EudraCT Number: 2021-003376-14. Registered on November 26, 2021.

Non-antibiotic treatment of uncomplicated acute diverticulitis is applicable and safe in our environment. A prospective multicenter study

Introduction: acute diverticulitis is one of the most frequent underlying causes behind individuals attending the Emergency Room with abdominal pain. The most widespread therapy for acute uncomplicated diverticulitis includes outpatient treatment with antibiotics; however, several publications indicate that patients can also be successfully treated without antibiotics. The results of the implementation of this more recent protocol in two hospitals in Madrid are presented. Methods: an observational prospective study was performed. Participants were patients diagnosed with uncomplicated acute diverticulitis at two hospitals in Madrid, Hospital Universitario de Torrejón and Hospital Universitario Puerta de Hierro Majadahonda, between December 2018 and August 2021, treated on an outpatient basis without antibiotic therapy. The study group was compared with a control group, composed of patients diagnosed with uncomplicated acute diverticulitis and treated with outpatient antibiotic therapy at Hospital Universitario Puerta de Hierro between March 2015 and March 2018. Results: three hundred and sixty-one patients were included, 182 in the study group and 179 in the control group. Diverticulitis was persistent in 19 patients (10.4 %) in the study group, who were not treated with antibiotics, and in five patients (2.8 %) in the control group, treated with outpatient antibiotic therapy (p = 0.004). Recurrences occurred in 23 patients (12.6 %) in the study group, and in 53 patients (29.6 %) in the control group (p < 0.0001). The analysis of the complications found no significant differences between both groups (p = 0.109). No urgent surgical intervention or mortality was recorded in the study group. Conclusions: in our environment, symptomatic non-antibiotic treatment of uncomplicated acute diverticulitis cases is safe, without showing a higher rate of complications. Although, there seems to be a worse initial symptom control. (AU)

Non-antibiotic treatment of uncomplicated acute diverticulitis is applicable and safe in our environment. A prospective multicenter study.

INTRODUCTION: Acute diverticulitis is one of the most frequent underlying causes behind individuals attending the Emergency Department with abdominal pain. The most widespread therapy for acute uncomplicated diverticulitis includes outpatient treatment with antibiotics; however, several publications indicate that patients can also be successfully treated without antibiotics. The results of the implementation of this more recent protocol in two hospitals in Madrid are presented. METHODS: An observational prospective study was performed. Participants were patients diagnosed with AUD at two hospitals in Madrid, the University Hospital of Torrejón and the Puerta de Hierro Majadahonda University Hospital, between December 2018 and August 2021, treated on an outpatient basis without antibiotic therapy. The study group was compared with a control group, composed of patients diagnosed with acute uncomplicated diverticulitis and treated with outpatient antibiotic therapy at the Puerta de Hierro University Hospital between March 2015 and March 2018. RESULTS: 361 patients were included, 182 in the study group and 179 in the control group. Diverticulitis was persistent in 19 patients (10.4%) in the study group, who were not treated with antibiotics, and in 5 patients (2.8%) in the control group, treated with outpatient antibiotic therapy (p=0.004). Recurrences occurred in 23 patients (12.6%) in the study group, and in 53 patients (29.6%) in the control group (p<0.0001). The analysis of the complications found no significant differences between both groups, p=0.109. No urgent surgical intervention or mortality was recorded in the study group. CONCLUSIONS: In our environment, symptomatic non-antibiotic treatment of AUD cases is safe, without showing a higher rate of complications. Although, there seems to be a worse initial symptom control.

Complete Dataset to be used as a workbench to evaluate the profitability of an offshore wind farm.

The presented data collection has been used in the paper Multi-objective optimization of a uniformly distributed offshore wind farm considering both economic factors and visual impact, but can be used for a realistic evaluation of the annual energy production of an offshore wind farm and/or the calculation of the project investment cost. It contains realistic wind data, a bathymetric map, the definition of the coast shoreline and forbidden zones, as well as the acquisition and installation cost for the most important components influencing the investment and operation costs.

Diverticulitis en pacientes inmunodeprimidos: resultados de nuestra unidad en el manejo de pacientes de alto riesgo / No disponible

INTRODUCCIÓN: la diverticulitis aguda es una enfermedad con una gran prevalencia y la necesidad de un manejo más agresivo en pacientes inmunodeprimidos no ha quedado claramente consensuada. OBJETIVOS: valorar la posibilidad de que el manejo conservador en este grupo sea tan válido como en la población inmunocompetente. MÉTODOS: presentamos un estudio analítico retrospectivo llevado a cabo en nuestro hospital. Se analizaron 40 pacientes inmunodeprimidos (trasplantados, tratamiento corticoideo, tratamiento renal sustitutivo, oncológicos, VIH positivos en situación de inmunodepresión) diagnosticados de diverticulitis aguda. Los pacientes siguieron manejo no quirúrgico o tratamiento quirúrgico urgente según su situación clínica al ingreso. Las principales medidas estudiadas han sido la gravedad del cuadro agudo y la necesidad de tratamiento quirúrgico según la causa de inmunodepresión. RESULTADOS: de 40 pacientes estudiados, 32 fueron manejados de forma conservadora en el momento agudo, con necesidad de intervención quirúrgica urgente en ocho casos (siete intervenciones de Hartmann y una resección con anastomosis), siendo el grupo de los trasplantados y los pertenecientes al rango de edad 40-50 años los de mayor riesgo. Tres pacientes requirieron intervención de forma programada por complicaciones posteriores. Veinticuatro pacientes evolucionaron sin complicaciones. CONCLUSIONES: la proporción de diverticulitis aguda complicada es superior que en la población general. El tratamiento no quirúrgico parece tan seguro como en la población inmunocompetente. Los pacientes más jóvenes y los trasplantados constituyen los principales grupos de riesgo para sufrir un cuadro grave que precise un manejo más agresivo de manera inicial

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Diverticulitis in immunodeficient patients: our experience in the management of high-risk patients.

INTRODUCTION: acute diverticulitis is a very prevalent disease. The need for a more aggressive management in immunodeficient patients has not been established. We present the results of our unit with immunodeficient patients diagnosed with acute diverticulitis and their follow-up. OBJECTIVES: to assess the possibility that a conservative management in this group is as valid as in the immunocompetent population. METHODS: a retrospective analysis study was performed in our hospital. Forty immunodeficient patients (transplant, corticoid treatment, dialysis, oncologic, HIV patients) diagnosed with acute diverticulitis were analyzed. The patients were managed with a surgical or non-surgical treatment according to their status on admission. The main analyzed items were the severity of the acute episode and the need for surgical treatment compared to the cause of immunodeficiency. Other studied variables included follow-up results and recurrences. RESULTS: thirty-two of the 40 patients studied received a non-surgical treatment during the acute episode, eight required emergency surgery (seven had a Hartmann procedure and one underwent a colon resection and anastomosis). Transplant patients and those between 40 and 50 years old proved to be higher risk groups. Three patients subsequently required elective surgery due to complications. Twenty-four patients had uneventful recoveries. CONCLUSIONS: the frequency of complicated acute diverticulitis is higher in immunodeficient patients than that of the general population. Non-surgical treatment seems to be as safe as in immunocompetent patients. Younger and transplanted patients were higher risk groups for severe acute diverticulitis that required a more aggressive management initially.

Adenocarcinoma de colon pobremente diferenciado con diferenciación rabdoide: un diagnóstico anatomopatológico extremadamente infrecuente / Poorly differentiated colonic adenocarcinoma showing rhabdoid feature: An extremely unusual anatomopathological diagnosis

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New method to assess the long-term role of wind energy generation in reduction of CO2 emissions - Case study of the European Union.

Most existing works using a displacement estimation method to estimate the CO2 emissions abated by wind energy are based on the current operating principles of the power system. They consider a fixed displacement emission factor since wind energy is assumed to replace high-carbon generation. This method may be unsuitable in the long run when the energy mix of most countries becomes more decarbonised. Consequently, wind energy would replace those technologies becoming increasingly predominant in the future, i.e. lower polluting fossil fuels such as natural gas and even other less competitive low-carbon technologies. In order to consider this effect, this paper proposes a new method that estimates a range of potential CO2 emissions abated by wind energy based on two dynamic displacement emission factors, which are periodically updated according to the evolution of the future energy mix. Such factors represent an upper and a lower limit of CO2 emissions avoided. The method is validated in the case study of the European Union over the period 2015-2050. The results show that the annual displacement emission factor by wind energy may vary from about 422 to 741 t CO2/GWh in 2015 to around 222-515 t CO2/GWh in 2050. The total CO2 abatement ranges from about 6600 to 13100 Mt CO2 in the period 2015-2050.

Uso del valor de la hormona paratiroidea intacta en el primer día postoperatorio tras tiroidectomía total como predictor de hipoparatiroidismo permanente / Serum levels of intact parathyroid hormone on the first day after total thyroidectomy as predictor of permanent hypoparathyroidism

Introducción: El hipoparatiroidismo permanente es la complicación a largo plazo más prevalente tras una tiroidectomía total, siendo responsable de una importante morbilidad y de necesidad de tratamiento sustitutivo a largo plazo. El objetivo de este estudio fue determinar si el valor de la hormona paratiroidea intacta (PTHi) en el primer día postoperatorio tras una tiroidectomía total es un buen predictor de hipoparatiroidismo permanente. Material y métodos: Estudio retrospectivo de observación en el que se analizaron todos los pacientes intervenidos de tiroidectomía total entre enero de 2009 y diciembre de 2014. Se recogieron los valores de PTHi y calcio sérico en el primer día postoperatorio, y todos los pacientes tuvieron un seguimiento mínimo de un año. Resultados: Se incluyeron 481 pacientes con una edad media de 53±14 años, el 82% de los cuales eran mujeres. La causa más frecuente de tiroidectomía fue el bocio multinodular (75%), seguido del carcinoma papilar de tiroides (15%). La complicación precoz más frecuente fue la hipocalcemia transitoria (49%), y a largo plazo fue el hipoparatiroidismo permanente (6%). El estudio estadístico mediante curvas ROC mostró que la PTHi en el primer día postoperatorio es un buen predictor de hipoparatiroidismo permanente (área bajo la curva de 0,87; IC 95%: 0,84-0,91). Valores de 5pg/ml presentan una sensibilidad del 95%, una especificidad del 77%, un valor predictivo positivo del 21,6% y un valor predictivo negativo del 99,6%. Conclusiones: La PTHi en el primer día postoperatorio de la tiroidectomía total es un predictor útil de hipoparatiroidismo permanente gracias a su alto valor predictivo negativo. Valores de PTHi>5 pg/ml excluyen prácticamente la presencia de hipoparatiroidismo permanente

Background: Permanent hypoparathyroidism is the most common long-term complication after total thyroidectomy, causing significant morbidity and requiring long-term replacement therapy. Our study objective was to assess whether intact parathyroid hormone (iPTH) levels on the first day after total thyroidectomy are a good predictor of permanent hypoparathyroidism. Patients and methods: A retrospective observational study of all patients undergoing total thyroidectomy between January 2009 and December 2014. iPTH and calcium levels were measured the first day after surgery. Patients were followed up for at least one year after surgery. Results: The study group consisted of 481 patients with a mean age of 53±14 years, 82% of them females. The most common reason for thyroidectomy was multinodular goiter (75%), followed by papillary thyroid cancer (15%). Transient hypocalcemia was the most common early complication after total thyroidectomy (49%), and permanent hypoparathyroidism was the most common long-term complication (6%). ROC curve analysis showed that iPTH level on the first postoperative day was a good predictor of permanent hypoparathyroidism (area under the curve 0.87; 95% CI: 0.84-0.91). Cut-off iPTH levels of 5pg/mL had 95% sensitivity, 77% specificity, 21.6% positive predictive value, and 99.6% negative predictive value. Conclusions: iPTH level on the first day after total thyroidectomy is a useful predictor of permanent hypoparathyroidism because of its high negative predictive value. Serum iPTH levels >5pg/mL virtually exclude presence of permanent hypoparathyroidism

Serum levels of intact parathyroid hormone on the first day after total thyroidectomy as predictor of permanent hypoparathyroidism. / Uso del valor de la hormona paratiroidea intacta en el primer día postoperatorio tras tiroidectomía total como predictor de hipoparatiroidismo permanente.

BACKGROUND: Permanent hypoparathyroidism is the most common long-term complication after total thyroidectomy, causing significant morbidity and requiring long-term replacement therapy. Our study objective was to assess whether intact parathyroid hormone (iPTH) levels on the first day after total thyroidectomy are a good predictor of permanent hypoparathyroidism. PATIENTS AND METHODS: A retrospective observational study of all patients undergoing total thyroidectomy between January 2009 and December 2014. iPTH and calcium levels were measured the first day after surgery. Patients were followed up for at least one year after surgery. RESULTS: The study group consisted of 481 patients with a mean age of 53±14 years, 82% of them females. The most common reason for thyroidectomy was multinodular goiter (75%), followed by papillary thyroid cancer (15%). Transient hypocalcemia was the most common early complication after total thyroidectomy (49%), and permanent hypoparathyroidism was the most common long-term complication (6%). ROC curve analysis showed that iPTH level on the first postoperative day was a good predictor of permanent hypoparathyroidism (area under the curve 0.87; 95% CI: 0.84-0.91). Cut-off iPTH levels of 5pg/mL had 95% sensitivity, 77% specificity, 21.6% positive predictive value, and 99.6% negative predictive value. CONCLUSIONS: iPTH level on the first day after total thyroidectomy is a useful predictor of permanent hypoparathyroidism because of its high negative predictive value. Serum iPTH levels >5pg/mL virtually exclude presence of permanent hypoparathyroidism.

[Management of jejunal diverticulitis. Experience in our center]. / Manejo de la diverticulitis yeyunal. Experiencia en nuestro centro.

Jejunal diverticular disease is a very uncommon pathology often asymptomatic. Associated complications appear in less than 30% of patients and they can present as diverticulitis, refractary inflammation, obstruction, hemorrhage, perforation or intraabdominal abscess formation. Clinical manifestations are usually unspecific and high suspicion index is required to reach the diagnosis. Treatment of complications includes volume replacement, transfusions, antibiotic therapy, percutaneous drainage or surgical intervention. We present a retrospective observational study of the cases treated in our hospital between 2007 and 2016.

La enfermedad diverticular yeyunal es una condición clínica muy poco frecuente y habitualmente asintomática. Las complicaciones asociadas aparecen en menos del 30% de los pacientes y pueden manifestarse como inflamación de los divertículos, obstrucción intestinal, hemorragia digestiva, malabsorción intestinal, formación de abscesos intraabdominales y perforación. La clínica de los pacientes es muchas veces inespecífica, requiriendo un alto grado de sospecha para llegar al diagnóstico. El tratamiento de las complicaciones de la enfermedad diverticular es variado, incluyendo reposición de volumen o transfusiones, antibioticoterapia, drenaje percutáneo o intervención quirúrgica. Presentamos un estudio observacional retrospectivo de los casos tratados en nuestro hospital entre 2007 y 2016.

Apendicitis aguda tras resección submucosa endoscópica de pólipo colónico / Acute appendicitis after a colonic endoscopic submucosal resection

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Acute appendicitis after a colonic endoscopic submucosal resection.

We present a case of acute appendicitis as a complication after an Endoscopic Submucosal Resection of a colonic polyp.