Pancreatic PEComa, a not so uncommon neoplasm? Systematic review and therapeutic update. / PEComa pancreático ¿una neoplasia no tan infrecuente? Revisión sistemática y actualización clínico-terapéutica.

Pancreatic PEComas are extremely rare neoplasms with malignant potential, which mostly affect middle-aged women and are characterized by presenting melanocytic and myogenic markers in immunohistochemical analysis. There are no symptoms or pathognomonic imaging tests, so the diagnosis is established with the analysis of the surgical specimen or the FNA obtained with preoperative endoscopic ultrasound. The mean treatment consists on radical excision, adapting the intervention to the location of the tumor. To date, 34 cases have been described; however, more than 80% of them have been reported in the last decade, which suggests that it is a more frequent pathology than expected. A new case of pancreatic PEComa is reported and a systematic review of the literature is carried out according to the PRISMA guidelines with the aim of divulge this pathology, deepening its knowledge and updating its management.

Social media and surgery.

During the last years, social media use has increased in the surgical community. Social Media in surgery has created new challenges such as surgical education, patient privacy, professionalism, and the difference between the private and public virtual life. Facebook, YouTube or WebSurg are some of the main social media in the surgical field. Nevertheless, Twitter is the most common and relevant Media for surgeons. Some Twitter Hashtag such as #SoMe4Surgery or #colorectalsurgery went viral and had a significant influence in the surgical community. Some of the uses of social media in surgery are education of younger surgeons, surgical research, and relationship between surgeons. However, not everything in social media is positive. Some negative issues of social media use in surgery are, for example, lack of privacy, intellectual property conflicts, conflicts of interest and mistakes in the published information. In this article, the main social media, the use of these media, the advantages and the possible risks and negative issues of social media are discussed.

Stent as bridge to surgery decreases postoperative complications without worsening oncological outcomes: retrospective unicentric cohort study and stent placement protocol.

BACKGROUND: Even if the use of stent as bridge to surgery (BTS) for obstructive colon cancer was described long ago, there is still much controversy on their use. Patient recovery before surgery and colonic desobstruction are just some of the reasons to defend this management that can be found in several available articles. METHODS: This is a single-center, retrospective cohort study, including patients with obstructive colon cancer treated between 2010 and 2020. The primary aim of this study is to compare medium-term oncological outcomes (overall survival, disease-free survival) between stent as BTS and ES groups. The secondary aims are to compare perioperative results (in terms of approach, morbidity and mortality, and rate of anastomosis/stomas) between both groups and, within the BTS group, analyze whether there are any factors that may influence oncological outcomes. RESULTS: A total of 251 patients were included. Patients belonging to the BTS cohort presented a higher rate of laparoscopic approach, required less intensive care management, less reintervention, and less permanent stoma rate, when comparing with patients who underwent urgent surgery (US). There were not significant differences in terms of disease-free survival and overall survival between the two groups. Lymphovascular invasion negatively affected oncological results but was not related with stent placement. CONCLUSION: The stent as a bridge to surgery is a good alternative to urgent surgery, which leads to a decrease in postoperative morbidity and mortality without significantly worsening oncological outcomes.

Is ICG essential in all colorectal surgery? A 3-year experience in a single center: a cohort study.

INTRODUCTION AND OBJECTIVES: Indocyanine green (ICG) was introduced as a promising diagnostic tool to provide real-time assessment of intestinal vascularization. Nevertheless, it remains unclear whether ICG could reduce the rate of postoperative AL. The objective of this study is to assess its usefulness and to determine in which patients is most useful and would benefit the most from the use of ICG for intraoperative assessment of colon perfusion. METHODS: A retrospective cohort study was conducted in a single center, including all patients who underwent colorectal surgery with intestinal anastomosis between January 2017 and December 2020. The results of patients in whom ICG was used prior to bowel transection were compared with the results of the patients in whom this technique was not used. Propensity score matching (PSM) was employed to compare groups with and without ICG. RESULTS: A total of 785 patients who underwent colorectal surgery were included. The operations performed were right colectomies (35.0%), left colectomies (48.3%), and rectal resections (16.7%). ICG was used in 280 patients. The mean time since the infusion of ICG until detection of fluorescence in the colon wall was 26.9 ± 1.2 s. The section line was modified in 4 cases (1.4%) after ICG due to a lack of perfusion in the chosen section line. Globally, a non-statistically significant increase in anastomotic leak rate was observed in the group without ICG (9.3% vs. 7.5%; p = 0.38). The result of the PSM was a coefficient of 0.026 (CI - 0.014 to 0.065, p = 0.207). CONCLUSIONS: ICG is a safe and useful tool to assess the perfusion of the colon prior to performing the anastomosis in colorectal surgery. However, in our experience, it did not significantly lower the anastomotic leakage rate.

Has the COVID-19 pandemic changed the clinical picture and tumour stage at the time of presentation of patients with colorectal cancer? A retrospective cohort study.

INTRODUCTION: Treatment of patients with Coronavirus Disease 2019 (COVID-19) has affected the management of patients with colorectal cancer (CRC). The aim of this study was to compare the diagnosis delay, symptoms, and stage of patients with CRC during the pandemic with a control cohort. MATERIAL AND METHODS: Patients referred to the CRC multidisciplinary team between September 2019 and January 2020 (cohort 1, control group) were compared with those who presented between September 2020 and March 2021 (cohort 2, pandemic group). RESULTS: 389 patients were included, 169 in cohort 1 and 220 in cohort 2. No differences were observed in the main characteristics of the patients. CRC screening and anaemia were the most common causes leading to the diagnosis of the tumour in cohort 1 and 2, respectively (p<0.001). Diagnostic and therapeutic delay was longer in cohort 2 [6.4 (95% CI 5.8-6.9) vs. 4.8 (95% CI 4.3-5.3) months, p<0.001]. More patients required non-elective treatment in the pandemic cohort (15.5% vs. 9.5%, p=0.080). The tumour stage was more advanced in patients in cohort 2 [positive nodes in 52.3% vs. 36.7% (p=0.002), and metastatic disease in 23.6% vs. 16.6% (p=0.087)]. CONCLUSION: CRC patients in the pandemic cohort had a longer diagnostic and therapeutic delay and less patients were diagnosed because of CRC screening. In addition, patients with CRC during the pandemic needed non-elective treatment more frequently than patients in the control cohort, and their tumour stage tended to be more advanced.

Evolución de la cirugía urgente en un servicio de cirugía general durante la pandemia de COVID-19 y comparación con una cohorte histórica.

BACKGROUND: Acute care surgery decreased during the first wave of the COVID-19 pandemic. OBJECTIVE: To study the evolution of acute care surgery and its relationship with the pandemic severity. METHOD: Retrospective cohort study which compared patients who underwent acute care surgery during the pandemic to a control group. RESULTS: A total of 660 patients were included (253 in the control group, 67 in the first-wave, 193 in the valley, and 147 in the second wave). The median daily number of acute care surgery procedures was 2 during the control period. This activity decreased during the first wave (1/day), increased during the valley (2/day), and didn't change in the second wave (2/day). Serious complications were more common during the first wave (22.4%). A negative linear correlation was found between the daily number of acute care surgery procedures, number of patients being admitted to the hospital each day and daily number of patients dying because of COVID-19. CONCLUSIONS: Acute care surgery was reduced during the first wave of the COVID-19 pandemic, increased during the valley, and returned to the pre-pandemic level during the second wave. Thus, acute care surgery was related to pandemic severity, with fewer surgeries being performed when the pandemic was more severe.

ANTECEDENTES: La cirugía urgente disminuyó durante la primera ola de la pandemia de COVID-19. OBJETIVO: Estudiar la evolución de la cirugía urgente y su relación con la gravedad de la pandemia. MÉTODO: Estudio de cohortes retrospectivo que compara los pacientes intervenidos de forma urgente durante la pandemia con un grupo control. RESULTADOS: Se incluyeron 660 pacientes (253 en el grupo control, 67 en primera ola de la pandemia, 193 en el periodo valle y 147 en la segunda ola). La mediana del número de cirugías urgentes fue de 2 (intervalo intercuartílico: 1-3) durante el periodo control, disminuyó durante la primera ola (1/día), aumentó durante el valle (2/día) y no se modificó en la segunda ola (2/día). Las complicaciones mayores fueron más comunes durante la primera ola (22.4%). Se encontró una correlación lineal negativa entre el número de procedimientos quirúrgicos urgentes diarios y el número de ingresos hospitalarios y fallecimientos diarios por COVID-19. CONCLUSIONES: La cirugía urgente se redujo durante la primera ola, aumentó durante el periodo valle y volvió a niveles prepandémicos durante la segunda ola. Además, la cirugía urgente se relaciona con la gravedad de la pandemia, ya que se realizaron menos cirugías urgentes durante el periodo de mayor gravedad de la pandemia.

Analysis of the broadcasting and perceived utility through the implementation of a virtual training platform during the pandemic.

INTRODUCTION: The SARS-CoV-2 pandemic has affected training opportunities for healthcare professionals partly because face to face courses were cancelled. This study analyzes the results of participation and satisfaction of the AEC Virtual Classroom sessions during the first year. METHODS: The AEC Virtual Classroom includes a combined format of weekly Webinar broadcast live that can be viewed on a delayed basis in a virtual platform. In this study, the results in its first year are evaluated considering the number of live participants, the delayed views and the global reach; as well as the results of the satisfaction survey in each of the sessions (0-10). RESULTS: From 16/04/2020 to 15/04/2021, 50 sessions of the Virtual Classroom AEC were held. The average scope of the sessions was 509 ± 288 views with a range between 196 and 149. At the times of highest incidence of cases during the pandemic, a decrease in live participants was observed 275 ± 135 vs. 391 ± 233 (P = 0.032). The mean score on the format was 8.46 ± 0.31/10. The best-scored sessions were those of the subject related to coloproctology with a statistically significant difference in the mean score 8.79 ± 0.42 vs. 8.39 ± 0.27 (P = 0.035). 90% of users considered the sessions useful. 97.2% of respondents believe that the sessions should be maintained after the pandemic. CONCLUSIONS: The AEC Virtual Classroom has had very good results in the first year, proving to be a useful surgical teaching tool that will foreseeably survive once the pandemic is over.

[Analysis of the broadcasting and perceived utility through the implementation of a virtual training platform during the pandemic]. / Análisis de la difusión y utilidad percibida a través de la implementación de una plataforma de formación virtual durante la pandemia por COVID-19.

Introduction: The SARS-CoV-2 pandemic has affected training opportunities for healthcare professionals partly because face to face courses were cancelled. This study analyzes the results of participation and satisfaction of the AEC Virtual Classroom sessions during the first year. Methods: The AEC Virtual Classroom includes a combined format of weekly Webinar broadcast live that can be viewed on a delayed basis in a virtual platform. In this study, the results in its first year are evaluated considering the number of live participants, the delayed views and the global reach; as well as the results of the satisfaction survey in each of the sessions (0-10). Results: From 16/04/2020 to 15/04/2021, 50 sessions of the Virtual Classroom AEC were held. The average scope of the sessions was 509 ± 288 views with a range between 196 and 149. At the times of highest incidence of cases during the pandemic, a decrease in live participants was observed 275 ± 135 vs. 391 ± 233 (p = 0.032). The mean score on the format was 8.46 ± 0.31/10. The best-scored sessions were those of the subject related to coloproctology with a statistically significant difference in the mean score 8.79 ± 0.42 vs. 8.39 ± 0.27 (p = 0.035). 90% of users considered the sessions useful. 97.2% of respondents believe that the sessions should be maintained after the pandemic. Conclusions: The AEC Virtual Classroom has a very good results in the first year, proving to be a useful surgical teaching tool that will foreseeably survive once the pandemic is over.

Has the COVID-19 pandemic changed the clinical picture and tumour stage at the time of presentation of patients with colorectal cancer? A retrospective cohort study.

Introduction: Treatment of patients with Coronavirus Disease 2019 (COVID-19) has affected the management of patients with colorectal cancer (CRC). The aim of this study was to compare the diagnosis delay, symptoms, and stage of patients with CRC during the pandemic with a control cohort. Material and methods: Patients referred to the CRC multidisciplinary team between September 2019 and January 2020 (cohort 1, control group) were compared with those who presented between September 2020 and March 2021 (cohort 2, pandemic group). Results: 389 patients were included, 169 in cohort 1 and 220 in cohort 2. No differences were observed in the main characteristics of the patients. CRC screening and anaemia were the most common causes leading to the diagnosis of the tumour in cohort 1 and 2, respectively (p < 0.001). Diagnostic and therapeutic delay was longer in cohort 2 [6.4 (95% CI 5.8-6.9) vs. 4.8 (95% CI 4.3-5.3) months, p < 0.001]. More patients required non-elective treatment in the pandemic cohort (15.5% vs. 9.5%, p = 0.080). The tumour stage was more advanced in patients in cohort 2 [positive nodes in 52.3% vs. 36.7% (p = 0.002), and metastatic disease in 23.6% vs. 16.6% (p = 0.087)]. Conclusion: CRC patients in the pandemic cohort had a longer diagnostic and therapeutic delay and less patients were diagnosed because of CRC screening. In addition, patients with CRC during the pandemic needed non-elective treatment more frequently than patients in the control cohort, and their tumour stage tended to be more advanced.

Introducción: La pandemia de la enfermedad por coronavirus 2019 ha afectado al manejo de los pacientes con cáncer colorrectal (CCR). El objetivo de este estudio fue comparar el retraso diagnóstico, la sintomatología y el estadio de los pacientes con CCR durante la pandemia con una cohorte histórica. Material y métodos: Los pacientes valorados en el comité multidisciplinar de CCR entre septiembre de 2019 y enero de 2020 (cohorte 1) se compararon con los presentados entre septiembre de 2020 y marzo de 2021 (cohorte 2). Resultados: Trescientos ochenta y nueve pacientes fueron incluidos, 169 en la cohorte 1 y 220 en la cohorte 2. El cribado del CCR y la anemia fueron las causas que llevaron al diagnóstico en más pacientes en la cohorte 1 y 2, respectivamente (p < 0,001). El retraso diagnóstico y terapéutico fue mayor en la cohorte 2 (6,4 [IC 95%: 5,8-6,9] vs. 4,8 [IC 95%: 4,3-5,3] meses, p < 0,001). En la cohorte pandémica hubo más pacientes que requirieron tratamiento urgente (15,5% vs. 9,5%, p = 0,080). El estadio tumoral fue más avanzado en la cohorte 2 (ganglios positivos en el 52,3% vs. 36,7% [p = 0,002] y enfermedad metastásica en el 23,6% vs. 16,6% [p = 0,087]). Conclusión: Los pacientes con CCR en la cohorte pandémica tenían un retraso diagnóstico y terapéutico más largo, y menos pacientes fueron diagnosticados en el cribado de CCR. Además, los pacientes con CCR durante la pandemia necesitaron tratamiento urgente con más frecuencia y su estadio tumoral fue más avanzado.

[Prognostic factors for malnutrition in patients with colorectal cancer]. / Factores pronósticos de desnutrición en pacientes con cáncer colorrectal.

Introduction: Introduction: patients undergoing major abdominal surgery, including colorectal surgery, particularly if they are oncological patients, are at risk of malnutrition with a worse postoperative evolution and an increase in complications. Objectives: to assess the prevalence of malnutrition in patients undergoing colon and rectal surgery in our hospital, and to identify the different risk factors for malnutrition. Methods: a retrospective cohort study including all patients operated on for colorectal cancer in our environment. Results: a total of 382 patients with a mean age of 69.93 years were included in the study. Considering different risk factors for malnutrition, we obtained that 50.6 % of the patients had some of the risk indicators for malnutrition altered at the time of admission. The variables that proved to be independent factors related to malnutrition were age, DM, baseline malnutrition, and heart disease. Preoperative malnutrition turned out to be the greatest risk factor for presenting moderate/severe malnutrition in the postoperative period with an OR of 3.83 (2.1-6.9; p < 0.001), and was also associated with a higher incidence of postoperative complications and longer hospital stays. We obtained that the percentage of postoperative complications was significantly higher in the group of patients diagnosed with peroperative malnutrition (36.3 % vs 22.0 %, p = 0.004). Conclusions: the percentage of malnutrition in patients with colorectal cancer is high, an aspect that is underestimated in most surgical services. In our study, malnutrition leads to worse outcomes with an increase in complications.

Introducción: Introducción: los pacientes sometidos a cirugía mayor abdominal, y más si se trata de pacientes oncológicos, son pacientes en riesgo de desnutrición, lo que conlleva una peor evolución posoperatoria y un aumento de las complicaciones. Objetivos: conocer la prevalencia de la desnutrición en los pacientes sometidos a cirugía de colon y recto en nuestro medio hospitalario e identificar los distintos factores de riesgo de desnutrición. Métodos: estudio de cohortes retrospectivo incluyendo a todos los pacientes intervenidos de cáncer colorrectal de forma programada en nuestro medio hospitalario. Resultados: se incluyeron en el estudio 382 pacientes con una edad media de 69,93 años. Considerando distintos factores de riesgo de desnutrición, obtuvimos que un 50,6 % de los pacientes tenían alterado alguno de los indicadores de riesgo de desnutrición en el momento del ingreso. Las variables que mostraron ser factores independientes relacionados con la desnutrición fueron la edad, la DM, la desnutrición basal y la cardiopatía. La desnutrición preoperatoria resultó ser el factor de mayor riesgo para presentar desnutrición moderada/grave en el posoperatorio con un OR de 3,83 (2,1-6,9; p < 0,001) y además se asoció a una mayor incidencia de complicaciones posoperatorias y a estancias hospitalarias más prolongadas. Obtuvimos que el porcentaje de complicaciones posoperatorias fue significativamente mayor en el grupo de pacientes diagnosticados de desnutrición peroperatoria (36,3 % vs. 22,0 %, p = 0,004). Conclusiones: el porcentaje de desnutrición en los pacientes con cáncer colorrectal es elevado, aspecto subestimado en la mayoría de los servicios quirúrgicos. La desnutrición conlleva en nuestro estudio una peor evolución con un incremento de las complicaciones.

Trends of social networks in the American College of Surgeons Clinical Congress and the Congreso Nacional de Cirugía. Analysis of the #ACSCC20 and #CNCirugia2020.

AIM: The objective of this study is to analyze the impact of the congresses of the American College of Surgeons (ACSCC2020) and the National Surgery Congress of the Spanish Association of Surgeons (CNC2020) in virtual format due to the SARS-CoV2 pandemic according to the fingerprint. MATERIAL AND METHODS: The Twitter hashtags # ACSCC20 and # CNCirugia2020 were studied to determine tweets, retweets, users and impressions. The data on the accounts with the greatest influence and the historical evolution of the congresses between 2015 and 2020 were analyzed. We used the symplur software to collect and analyze the data. RESULTS: Between 2015 and 2017 there was a consistent increase in the number of tweets, participants and impressions. Between 2018 and 2020, the ACS maintains the number of impressions with the fewest number of tweets. However, the CNC continues to grow and achieves its best metrics in 2020. We found statistically significant differences between the most prolific accounts of the ACSCC versus the CNC (P < .002) but there are no differences between the 10 most influential accounts (P = ,19) or the accounts with the highest number of impressions (P = .450) CONCLUSIONS: Virtual congresses generate a global impact through the use of Twitter for the dissemination of knowledge. In the present 2020, the growth of the impact on social networks has been proportionally greater in the CNC than in the ACSCC. However, the ACS virtual congress generated the greatest impact on social networks measured by the number of users, tweets and impressions between 2015 and 2020.

Right laparoscopic pudendal release + neurostimulator prosthesis (LION procedure) in pudendal neuralgia.

AIM: Pudendal neuralgia is a highly disabling entity with complex diagnostic and controversial treatment results. Surgical neurolysis has been shown to be the most effective treatment. Sacral root neurostimulation or posterior tibial nerve stimulation are used to rescue patients who either have not responded to surgery or have worsened after an initial improvement. METHODS: Given the excellent visualization of the pudendal nerve during laparoscopic pudendal release, we propose to combine this procedure with neurostimulation, taking advantage of the possibility of in situ placement of the electrode. The abdominal cavity is accessed laparoscopically through four ports, and after identifying and releasing the pudendal nerve a neurostimulation electrode is placed next to the nerve and is connected to a generator located in a subcutaneous pocket. RESULTS: This procedure has been performed in one patient with a satisfactory result. CONCLUSIONS: Laparoscopic pudendal release with neurostimulator prosthesis is an experimental technique that can be promising for the treatment of pudendal neuralgia.

Retrospective cohort study of laparoscopic ICG-Guided Lymphadenectomy in gastric cancer from a Western country center.

BACKGROUND: Indocyanine green (ICG) guided lymphadenectomy has been proposed has a technique to improve the lymphadenectomy of patients with gastric cancer. Nevertheless, experience with this procedure is scarce in Western countries. METHODS: A retrospective analytic study in a tertiary hospital in Spain was performed, comparing patients who underwent laparoscopic gastrectomy with (ICG cohort) and without (historic cohort) ICG guided lymphadenectomy. RESULTS: Thirty four patients were included (17 in each group). Although the number of positive nodes was similar in both groups (0.0 in the ICG cohort vs. 2 in the historic cohort, p = 0.119), the number of lymph nodes removed was higher in the ICG cohort (42.0 vs 28.0, p = 0.040). In the ICG cohort, more lymph nodes were positive for adenocarcinoma in the group of nodes that were positive for IGC (10.6% of the IGC + nodes vs. 1.9% in the ICG - nodes, p < 0.001). CONCLUSIONS: ICG lymphadenectomy is a promising procedure that could improve the lymphadenectomy of patients with gastric cancer. ICG lymphadenectomy could be used to increase the number of lymph nodes removed in patients with a high-risk of nodal invasion or it could be used to reduce the surgical aggressiveness in fragile patients with a low-risk of nodal invasion.

Higher Adherence to ERAS Society® Recommendations is Associated with Shorter Hospital Stay Without an Increase in Postoperative Complications or Readmissions in Bariatric Surgery: the Association Between Use of Enhanced Recovery After Surgery Protocols and Postoperative Complications after Bariatric Surgery (POWER 3) Multicenter Observational Study.

PURPOSE: The effectiveness of enhanced recovery after surgery (ERAS) pathways in patients undergoing bariatric surgery remains unclear. Our objective was to determine the effect of the ERAS elements on patient outcomes following elective bariatric surgery. MATERIALS AND METHODS: Prospective cohort study in adult patients undergoing elective bariatric surgery. Each participating center selected a single 3-month data collection period between October 2019 and September 2020. We assessed the 24 individual components of the ERAS pathways in all patients. We used a multivariable and multilevel logistic regression model to adjust for baseline risk factors, ERAS elements, and center differences RESULTS: We included 1419 patients. One hundred and fourteen patients (8%) developed postoperative complications. There were no differences in the incidence of overall postoperative complications between the self-designated ERAS and non-ERAS groups (54 (8.7%) vs. 60 (7.6%); OR, 1.14; 95% CI, 0.73-1.79; P = .56), neither for moderate-to-severe complications, readmissions, re-interventions, mortality, or hospital stay (2 [IQR 2-3] vs. 3 [IQR 2-4] days, 0.85; 95% CI, 0.62-1.17; P = .33) Adherence to the ERAS elements in the highest adherence quartile (Q1) was greater than 72.2%, while in the lowest adherence quartile (Q4) it was less than 55%. Patients with the highest adherence rates had shorter hospital stay (2 [IQR 2-3] vs. 3 [IQR 2-4] days, 1.54; 95% CI, 1.09-2.17; P = .015), while there were no differences in the other outcomes CONCLUSIONS: Higher adherence to ERAS Society® recommendations was associated with a shorter hospital stay without an increase in postoperative complications or readmissions. TRIAL REGISTRATION: ClinicalTrials.gov Identifier: NCT03864861.

Ischemic colitis. Does right colon location mean worst prognosis?

INTRODUCTION: Most patients with ischemic colitis have a favourable evolution; nevertheless, the location in the right colon has been associated with a worse prognosis. The purpose of this study is to compare the clinical presentation and results of right colon ischemic colitis (CICD) with ischemic colitis of other colonic segments (non-CIDC). METHODS: Retrospective, observational study of patients admitted to our hospital with ischemic colitis between 1993 and 2014, identified through a computerized search of ICD9 codes. They were divided into 2 groups: CICD and non-CICD. Comorbidities, clinical presentation, need for surgery, and mortality were compared. Multivariate analysis was performed using logistic regression adjusting for age and sex. Statistical significance was established at a value of P < 0.05. RESULTS: A total of 204 patients were identified, 61 (30%) with CICD; 61% of CICD patients required surgery compared to 22% of non-CICD patients (P < 0.001). Differences in post-surgical mortality (32% vs 55%) and overall mortality (20% vs 15%) were not statistically significant. CICD patients had more commonly unfavourable outcomes than non-CICD patients (61% vs 25%, P < 0.001). The odds ratio (OR) for surgery was 5.28 and 4.47 for unfavourable outcomes for patients with CICD. CONCLUSIONS: CICD patients have a worse prognosis than non-CICD patients, 5 times more likely to need surgery and 4 times more likely to have unfavourable outcomes.

Trends of social networks in the American College of Surgeons Clinical Congress and the Congreso Nacional de Cirugía. Analysis of the #ACSCC20 and #CNCirugia2020. / Resultados y evolución histórica de las redes sociales en el American College of Surgeons Clinical Congress y el Congreso Nacional de Cirugía. Análisis del #ACSCC20 y #CNCirugia2020.

AIM: The objective of this study is to analyze the impact of the American College of Surgeons Clinical Congress (ACSCC2020) and the National Surgery Congress of the Spanish Association of Surgeons (CNC2020) in virtual format due to the SARS-CoV-2 pandemic according to the fingerprint. MATERIAL AND METHODS: The Twitter hashtags # ACSCC20 and # CNCirugia2020 were studied to determine tweets, retweets, users and impressions. The data on the accounts with the greatest influence and the historical evolution of the congresses between 2015 and 2020 were analyzed. We used the symplur software to collect and analyze the data. RESULTS: Between 2015 and 2017 there was a consistent increase in the number of tweets, participants and impressions. Between 2018 and 2020, the ACS maintains the number of impressions with the fewest number of tweets. However, the CNC continues to grow and achieves its best metrics in 2020. We found statistically significant differences between the most prolific accounts of the ACSCC versus the CNC (P<.002) but there are no differences between the 10 most influential accounts (P=.19) or the accounts with the highest number of impressions (P=.450). CONCLUSIONS: Virtual congresses generate a global impact through the use of Twitter for the dissemination of knowledge. In the present 2020, the growth of the impact on social networks has been proportionally greater in the CNC than in the ACSCC. However, the ACS virtual congress generated the greatest impact on social networks measured by the number of users, tweets and impressions between 2015 and 2020.