Pandemic impact on aneurysmal subarachnoid hemorrhage in Peru's high COVID-19 lethality setting: A public institutional experience.

Background: The COVID-19 pandemic in 2020 profoundly impacted healthcare worldwide, and Peru was particularly affected, experiencing the highest COVID-19 case fatality rate globally. Methods: We conducted a retrospective comparative study of patients presenting with aneurysmal subarachnoid hemorrhage (SAH) at a public Peruvian national referral center specializing in cerebrovascular diseases. Two study periods were considered, one during the first wave of the COVID-19 pandemic and a second identical period in 2019. Variables included patient demographics, comorbidities, COVID-19 infection status, clinical presentation, treatment approaches, and hospital outcomes. Results: We analyzed 114 patients with aneurysmal SAH, 65 (57.0%) treated in 2019 and 49 (43.0%) in 2020. The mean time from emergency admission to the day of definitive treatment during 2019 and 2020 was 2.72 and 1.93 days, respectively. Likewise, the mean time from symptom onset to the date of definitive treatment was 6.71 and 7.70 days, respectively. We identified significant associations between complications such as sepsis, respiratory failure, acute kidney failure, and hospital mortality. The proportion of fatalities was significantly higher in 2020 compared to 2019 (36.7% vs. 15.4%, respectively). Interestingly, there was no statistically significant association between COVID-19 infection status and mortality during the 2020 period. Conclusion: Patients with aneurysmal SAH treated during the pandemic had a higher proportion of sepsis, respiratory failure, acute kidney failure, and mortality compared to the pre-pandemic period. Reallocating healthcare resources to prioritize COVID-19 patients may have inadvertently neglected or delayed care for patients with other emergency conditions, such as aneurysmal SAH. This highlights the importance of maintaining adequate care for non-infectious emergencies during a pandemic.

[Characteristics of Helicobacter pylori infection in a private hospital in Lima, 2019 experience and literature review]. / Características de la infección de Helicobacter pylori en un hospital privado de Lima, experiencia del 2019 y revisión de la literatura.

Digestive diseases are the fourth leading cause of outpatient care in Peruvian healthcare centers, with gastritis and peptic ulcers being the most common. This is a retrospective, cross-sectional, descriptive study of secondary analysis of medical record data to evaluate the prevalence of Helicobacter pylori in patients undergoing upper digestive endoscopy during 2019 at Clinica Delgado, Lima, Peru. An association between males (PRa 1.27, 95% CI 1.10-1.48, p<0.001), age categories and upper digestive endoscopy (PRa 2.53, 95% CI 2.16-2.97, p<0.001) was reported. Based on these findings, it is recommended that other causes of gastritis be identified, especially in young women with deep chronic gastritis. Furthermore, we present a review of the scientific literature of Peru on factors associated with the positivity of Helicobacter pylori in the results of superior digestive endoscopy.

Características de la infección de Helicobacter pylori en un hospital privado de Lima, experiencia del 2019 y revisión de la literatura / Characteristics of Helicobacter pylori infection in a private hospital in Lima, 2019 experience and literature review

RESUMEN Las enfermedades digestivas representan la cuarta causa de atención ambulatoria en los centros sanitarios peruanos, siendo la gastritis y las úlceras pépticas las más comunes. El presente es un estudio retrospectivo, de corte transversal, de tipo descriptivo, de análisis secundario de datos de historias clínicas, para evaluar la prevalencia de Helicobacter pylori en pacientes sometidos a endoscopia digestiva alta durante el año 2019 en la Clínica Delgado, Lima, Perú. Asociación entre el sexo masculino (PRa 1,27, IC95% 1,10-1,48, p <0,001), categorías de la edad y resultado de endoscopia digestiva alta (PRa 2,53, IC95% 2,16-2,97, p<0,001) fueron reportados. Se recomienda, a partir de estos hallazgos, determinar otras causas de gastritis, especialmente en las mujeres jóvenes con gastritis crónica profunda. Además, presentamos una revisión de la literatura científica del Perú sobre los factores asociados a la positividad de Helicobacter pylori en los resultados de la endoscopia digestiva superior.

ABSTRACT Digestive diseases are the fourth leading cause of outpatient care in Peruvian healthcare centers, with gastritis and peptic ulcers being the most common. This is a retrospective, cross-sectional, descriptive study of secondary analysis of medical record data to evaluate the prevalence of Helicobacter pylori in patients undergoing upper digestive endoscopy during 2019 at Clinica Delgado, Lima, Peru. An association between males (PRa 1.27, 95% CI 1.10-1.48, p<0.001), age categories and upper digestive endoscopy (PRa 2.53, 95% CI 2.16-2.97, p<0.001) was reported. Based on these findings, it is recommended that other causes of gastritis be identified, especially in young women with deep chronic gastritis. Furthermore, we present a review of the scientific literature of Peru on factors associated with the positivity of Helicobacter pylori in the results of superior digestive endoscopy.

Comparación del tratamiento quirúrgico y endovascular de aneurismas del segmento comunicante posterior / Comparison of surgical and endovascular treatment of posterior communicating segment aneurysms

Introducción: Los aneurismas del segmento comunicante posterior representan aproximadamente 25% de todos los aneurismas intracraneales, y el 50% de los aneurismas de la arteria carótida interna. El objetivo fue evaluar la eficacia del tratamiento quirúrgico y endovascular en el manejo de aneurismas de esta localización. Material y Métodos: Estudio comparativo retrospectivo. Se revisó las historias clínicas de pacientes con aneurisma del segmento comunicante posterior que ingresaron al departamento de Neurocirugía del Hospital Nacional Guillermo Almenara durante el periodo 2010-2017. Se comparó estancia hospitalaria, complicaciones, mortalidad y estado funcional a los 12 meses, en relación al tratamiento recibido, microquirúrgico o endovascular. Resultados: Se evaluaron 256 pacientes, 111 (43,36%) recibieron tratamiento quirúrgico, y 145 (56,64%) endovascular. En el caso de aneurismas rotos, el estado de independencia funcional fue alcanzado por 68 (66,7%) y 69 (70,4%) pacientes que recibieron tratamiento quirúrgico y endovascular, respectivamente (OR:0.84, IC 95%: 0.46­1.53; p=0.505). Se presentaron complicaciones neurológicas en 37 (36,3%) y 34 (34.7%) pacientes sometidos a tratamiento microquirúrgico y endovascular, respectivamente (OR: 1.07, IC 95%: 0.60­1.91; p=0.912). La estancia hospitalaria promedio fue 19,55±13.85 y 14.06±14.97 días, para pacientes con tratamiento quirúrgico y endovascular, respectivamente (p<0.008). La mortalidad fue 11,8% y 11,2%, con ligera predominancia en el grupo tratado quirúrgicamente (OR: 1.05, IC 95%: 0.44­2.52; p=0.904). Conclusiones: No existe diferencia significativa respecto al resultado funcional a los 12 meses, complicaciones y mortalidad entre ambos tipos de tratamiento en el caso de aneurismas rotos. Los pacientes sometidos a terapia endovascular tuvieron de forma significativa menor estancia hospitalaria

Background: Posterior communicating segment aneurysms represent about the 25% of all intracranial aneurysms and the 50% of the internal carotid artery aneurysms. The objective of the study was to evaluate the efficacy of the surgical and endovascular treatments in the management of the aneurysms of this localization. Methods: Comparative and retrospective study. Clinical charts of patients with aneurysms of the posterior communicating segment were reviewed during the period from 2010 to 2017 in the Guillermo Almenara Hospital. Hospital stay, complications, mortality and functional status at 12 months were compared among endovascular and surgical treatment. Results: Two hundred and fifty-six patients were evaluated, 111 (43,36%) were treated with surgery and 145 (54,64%) with endovascular therapy. Among ruptured aneurysms, functional independence status was reached in 68 (66,7%) and 69 (70,4%) of the patients who were treated with surgery and embolization respectively (OR:0.84, IC 95%: 0.46­1.53; p=0.505). Neurological complications were found in 37 (36,3%) and 34 (34,7%) patients treated with surgery and embolization respectively (OR: 1.07, IC 95%: 0.60­1.91; p=0.912). The mean hospital stay was 19,55±13.85 and 14.06±14.97 days of the patients treated with surgery and embolization respectively. Mortality was 11,8% and 11,2%, with a slight predominance in the surgically treated group (OR: 1.05, IC 95%: 0.44­2.52; p=0.904). Conclusions: There is no significant difference according to functional status at 12 months, complications and mortality among both type of treatments in the group of ruptured aneurysms. Patients treated with endovascular therapy had lower hospital stay with statistical difference

Perspectiva clínica sobre el tratamiento antihipertensivo en adultos con hipertensión grado 1 y riesgo cardiovascular bajo a moderado: consulta internacional de expertos

[RESUMEN]. La hipertensión arterial es el principal factor de riesgo de la carga global de las enfermedades. Una pregunta en debate es si la hipertensión arterial grado 1 (140–159/90–99 mm Hg) con riesgo cardiovascular (RCV) total bajo (mortalidad cardiovascular < 1% a los 10 años) a moderado (mortalidad cardiovascular > 1% y < 5% a los 10 años) debe ser tratada con agentes antihipertensivos. Un proceso de consulta virtual internacional fue realizado para resumir las opiniones de los expertos seleccionados. Después del análisis holístico de todos los elementos epidemiológicos, clínicos, psicosociales y de salud pública, este proceso de consulta llegó al siguiente consenso para adultos hipertensos < 80 años de edad: 1) La interrogante, de si el tratamiento medicamentoso en la hipertensión grado 1 debe ser precedido por un periodo de algunas semanas o meses, durante el cual solo se recomienden medidas sobre el estilo de vida no está basada en evidencia, pero el consenso de opinión es reservar un periodo para solo cambios en el estilo de vida únicamente en los pacientes con hipertensión grado 1 “aislada” (hipertensión grado 1 no complicada con RCV total absoluto bajo, y sin otros factores de RCV mayores ni modificadores del riesgo). 2) El inicio del tratamiento antihipertensivo medicamentoso en pacientes con hipertensión grado 1 y RCV absoluto moderado no debe demorarse. 3) Los hombres ≥ 55 años y las mujeres ≥ 60 años con hipertensión grado 1 no complicada deben ser automáticamente clasificados dentro de la categoría de RCV total absoluto moderado, incluso en ausencia de otros factores de riesgo mayores y modificadores del riesgo. 4) Las estatinas deben tenerse en cuenta junto con la terapia antihipertensiva, independientemente de los valores de colesterol, en pacientes con hipertensión grado 1 y RCV moderado.

[ABSTRACT]. Hypertension is a leading risk factor for disease burden globally. An unresolved question is whether grade 1 hypertension (140-159/90-99 mmHg) with low (cardiovascular mortality < 1% at 10 years) to moderate (cardiovascular mortality > 1% and < 5% at 10 years) absolute total cardiovascular risk (CVR) should be treated with antihypertensive agents. A virtual international consultation process was undertaken to summarize the opinions of select experts. After holistic analysis of all epidemiological, clinical, psychosocial, and public health elements, this consultation process reached the following consensus in hypertensive adults aged < 80 years: (1) The question of whether drug treatment in grade 1 should be preceded by a period of some weeks or months during which only life style measures are recommended cannot be evidence based, but the consensus opinion is to have a period of lifestyle alone reserved only to patients with grade 1 “isolated” hypertension (grade 1 uncomplicated hypertension with low absolute total CVR, and without other major CVR factors and risk modifiers). (2)The initiation of antihypertensive drug therapy in grade 1 hypertension with moderate absolute total CVR should not be delayed. (3) Men ≥ 55 years and women ≥ 60 years with uncomplicated grade1 hypertension should automatically be classified within the moderate absolute total CVR category, even in the absence of other major CVR factors and risk modifiers. (4) Statins should be considered along with blood-pressure lowering therapy, irrespective of cholesterol levels, in patients with grade 1 hypertensive with moderate CVR.

[Efficacy and safety of the endoscopic management of Zenker diverticulum with IT-Knife 2 device]. / Uso seguro y eficaz del IT-Knife-2 en el manejo endoscópico del divertículo de Zenker (DZ).

OBJECTIVE: To evaluate the efficacy and safety of the endoscopic management of Zenker Diverticulum with IT-Knife 2 device. MATERIALS AND METHODS: prospective and multicenter study (Edgardo Rebagliati Martins National Hospital and Golf Clinic). We included all patients with sintomatic Zenker Diverticulum that were treated with endoscopic cricopharyngeal miotomy from september 2013 until august 2016. TECHNIQUE: the diverticulum septum was faced with a cap, and then it was cut by the IT-Knife 2 (ENDOCUT Q, effect 3-2-5) until its baseline. Disphagia score was compared before and 1 and 3 months after the procedure. RESULTS: 20 patients were included (11 men; average age: 71 years). The median size of Zenker Diverticulum was 40.5 mm. The median duration of the cricopharyngeal miotomy was 13.75 minutes. Clinical success was 100%. There was a significative decrease (p<0.001) in the disphagia score from 2+/-0.86 before the procedure to 0.05+/-0.22 one month after it. Recurrence after 3 months was 15% and it was completely solved after a second endoscopic treatment. Niether perforation nor bleeding was reported. Two patients had pneumonia. CONCLUSION: the endoscopic management of Zenker Diverticulum with IT-Knife 2 is highly effective, safe and less complex than previous technique experience.

Uso seguro y eficaz del IT-Knife-2 en el manejo endoscópico del divertículo de Zenker (DZ) / Efficacy and safety of the endoscopic management of Zenker diverticulum with IT-Knife 2 device

Objetivo: Evaluar la eficacia y seguridad del manejo endoscópico del DZ con IT-knife 2. Materiales y métodos: Estudio prospectivo, multicéntrico (Hospital Nacional Edgardo Rebagliati Martins y la Clínica El Golf). Se incluyeron todos los pacientes con DZ sintomáticos desde setiembre 2013 a agosto 2016, los cuales fueron sometidos a miotomía cricofaringea endoscópica. Técnica: se afrontó el septo del DZ con un cap y luego se seccionó con el IT-Knife 2 (ENDOCUT Q Efecto 3-2-5) hasta su base. Se comparó la escala de disfagia antes y después del procedimiento, al 1er mes y luego de los 3 meses. Resultados: Se incluyeron 20 pacientes (11 varones; edad promedio: 71 años). El tamaño promedio del DZ fue de 40,5 mm. El tiempo promedio de la miotomía cricofaringea fue de 13,75 minutos. El éxito clínico fue del 100%, presentando un descenso estadísticamente significativo (p<0,001) en el score de disfagia de 2+/-0,86 pre-tratamiento a 0,05+/-0,22 al primer mes post- tratamiento. La recurrencia clínica a partir del tercer mes fue de 15%, resolviendo por completo con un segundo tratamiento endoscópico. No se presentó ningún caso de perforación ni sangrado. Dos pacientes cursaron con neumonía. Conclusión: El tratamiento endoscópico del DZ mediante el uso del IT-knife 2 es altamente eficaz y seguro, y de menor complejidad que la experiencia previa

Objective: To evaluate the efficacy and safety of the endoscopic management of Zenker Diverticulum with IT-Knife 2 device. Materials and methods: prospective and multicenter study (Edgardo Rebagliati Martins National Hospital and Golf Clinic). We included all patients with sintomatic Zenker Diverticulum that were treated with endoscopic cricopharyngeal miotomy from september 2013 until august 2016. Technique: the diverticulum septum was faced with a cap, and then it was cut by the IT-Knife 2 (ENDOCUT Q, effect 3-2-5) until its baseline. Disphagia score was compared before and 1 and 3 months after the procedure. Results: 20 patients were included (11 men; average age: 71 years). The median size of Zenker Diverticulum was 40.5 mm. The median duration of the cricopharyngeal miotomy was 13.75 minutes. Clinical success was 100%. There was a significative decrease (p<0.001) in the disphagia score from 2+/-0.86 before the procedure to 0.05+/-0.22 one month after it. Recurrence after 3 months was 15% and it was completely solved after a second endoscopic treatment. Niether perforation nor bleeding was reported. Two patients had pneumonia. Conclusion: the endoscopic management of Zenker Diverticulum with IT-Knife 2 is highly effective, safe and less complex than previous technique experience

Clinical Perspective on Antihypertensive Drug Treatment in Adults With Grade 1 Hypertension and Low-to-Moderate Cardiovascular Risk: An International Expert Consultation.

Hypertension is a leading risk factor for disease burden globally. An unresolved question is whether grade 1 hypertension (140-159/90-99mmHg) with low (cardiovascular mortality <1% at 10 years) to moderate (cardiovascular mortality ≥1% and <5% at 10 years) absolute total cardiovascular risk (CVR) should be treated with antihypertensive agents. A virtual international consultation process was undertaken to summarize the opinions of select experts. After holistic analysis of all epidemiological, clinical, psychosocial, and public health elements, this consultation process reached the following consensus in hypertensive adults aged <80 years: (1) The question of whether drug treatment in grade 1 should be preceded by a period of some weeks or months during which only lifestyle measures are recommended cannot be evidence based, but the consensus opinion is to have a period of lifestyle alone reserved only to patients with grade 1 "isolated" hypertension (grade 1 uncomplicated hypertension with low absolute total CVR, and without other major CVR factors and risk modifiers). (2) The initiation of antihypertensive drug therapy in grade 1 hypertension with moderate absolute total CVR should not be delayed. (3) Men ≥55 years and women ≥60 years with uncomplicated grade 1 hypertension should automatically be classified within the moderate absolute total CVR category, even in the absence of other major CVR factors and risk modifiers. (4) Statins should be considered along with blood-pressure lowering therapy, irrespective of cholesterol levels, in patients with grade 1 hypertensive with moderate CVR.

[Clinical-epidemiological profile of patients with suspicion of alimentary allergy in Mexico. Mexipreval Study]. / Perfil clínico-epidemiológico de pacientes con sospecha de alergia alimentaria en México. Estudio Mexipreval.

BACKGROUND: Adverse reaction to food has increased around the world in last years. Prevalence of food allergy raises between 2-4% in adults, and 6-8% in children. The clinical presentation is heterogeneous and varies from mild symptoms to anaphylactic reactions. Even the clinical history focused in the food is important; demonstration of allergen sensitization is mandatory. OBJECTIVE: To describe the profile of the patients with suspicion of food allergy and the regular clinical practice followed in Mexico. MATERIAL AND METHOD: An observational, descriptive, cross-sectional study was carried out from March 2013 to March 2014 using a convenience sample of allergic patients who were treated in the office, both private and public, of those physicians who seen food allergy patients. RESULTS: Clinical, epidemiological, diagnostic and therapeutic data were collected from 1,971 suspicious food allergic patients presenting for the first time in the departments of the researchers involved in the study. No difference was found in relation to gender. In relation to age, a bimodal distribution, with peaks at 2 and 35 years old, was found. A history of respiratory allergy was present in 75% of cases; 80% of patients had had any previous symptoms before seeking consultation and the most frequent clinical manifestations were cutaneous, 5% reported anaphylaxis. CONCLUSION: The foods involved in reactions change with age. The clinical presentation changes with the food, although the skin is the most frequently affected organ. Even if the suspicious were high, the confirmation with specific diagnostic tools is strongly recommended.

Antecedentes: las enfermedades alérgicas asociadas con alimentos se incrementan anualmente. Tienen una prevalencia de 2 a 4% en adultos y de 6 a 8% en niños. El cuadro clínico varía de síntomas leves hasta reacciones anafilácticas. El diagnóstico se basa en la historia clínica, pero debe demostrarse evidencia de sensibilización específica para el alergeno. Objetivo: conocer el perfil clínico-epidemiológico de los pacientes con sospecha de alergia alimentaria vistos en consultorios médicos (alergólogos y no alergólogos), así como la conducta diagnóstica y tratamiento habitual. Material y método: estudio observacional, transversal y descriptivo, efectuado en consultorios de médicos que atienden pacientes con alergia alimentaria en la República Mexicana durante un año natural de abril de 2013 a marzo de 2014, mediante un muestreo por conveniencia. Resultados: se realizaron 1,971 encuestas. No se encontró diferencia en relación con el género. En relación con la edad, se reportó una distribución bimodal, con picos a los 2 y 35 años de edad. Había antecedente de alergia respiratoria en 75% de los casos. El 80% de los pacientes tuvo algún síntoma antes de buscar atención y las manifestaciones clínicas más frecuentes afectaron la piel (57.1%). El 5% refirió haber padecido al menos un evento de anafilaxia. Conclusión: el tipo de alimento implicado cambia con la edad. La forma de manifestación clínica más frecuente fue la cutánea, pero varía con el tipo de alimento. Aun cuando la sospecha clínica sea alta, deben utilizarse métodos específicos que confirmen el diagnóstico.

[ARIA Mexico 2014. Adaptation of the Clinical Practice Guide ARIA 2010 for Mexico. Methodology ADAPTE]. / ARIA México 2014. Adaptación de la Guía de Práctica Clínica ARIA 2010 para México. Metodología ADAPTE.

BACKGROUND: The global prevalence of allergic rhinitis is high. International Study of Asthma and Allergies in Childhood (ISAAC) Phase III reports a total estimated prevalence of 4.6% in Mexico. There is evidence based on allergic rhinitis Clinical Practice Guidelines (CPG), but its promotion, acceptance and application is not optimal or adequate in Mexico. OBJECTIVE: To generate a guideline for the treatment of allergic rhinitis and its impact on asthma by adaptating the 2010 ARIA Guideline to Mexican reality, through a transculturation process applying the ADAPTE methodology. PATIENTS AND METHOD: Using the ADAPTE Methodology, the original 2010 ARIA CPG recommendations were evaluated by the guideline development group (GDG) into which multiple medical specialities managing patients with allergic rhinitis were incoorporated. The GDG valorated the quality of 2010 ARIA, checked and translated key clinical questions. Moreover, the GDG adjusted recommendations, patient preferences and included comments in the context of the Mexican reality (safety, costs and cultural issues). To accomplish this, we ran Delphi panels with as many rounds as necessary to reach agreement. One extra question, not included in the original 2010 ARIA, on the use of Nasal Lavages for AR was created sustained by a systematic literature review. RESULTS: A total of 45 questions from the original 2010 ARIA were included and divided into six groups covering prevention, medical treatment, immunotherapy and alternative medicine to treat patients with allergic rhinitis with or without asthma. Most of the questions reached agreement in one or two rounds; one question required three rounds. CONCLUSIONS: An easy-to-use, adaptated, up-to-date and applicable allergic rhinitis guideline for Mexico is now available.

ANTECEDENTES: la prevalencia de rinitis alérgica en todo el mundo es alta. El Estudio Internacional de Asma y Alergias en la Niñez (ISAAC de International Study of Asthma and Allergies in Childhood) Fase III reporta una prevalencia estimada total en México de 4.6%. Existen guías de práctica clínica basadas en evidencia de rinitis alérgica, pero su promoción, aceptación y validez no son óptimas ni adecuadas para México. OBJETIVO: generar una guía de tratamiento de la rinitis alérgica y su repercusión en el asma adaptando la guía ARIA 2010 a la realidad mexicana mediante un proceso de transculturización, por medio de la metodología ADAPTE. MATERIAL Y MÉTODO: a través de la metodología ADAPTE un grupo de desarrollo de la guía, integrado por múltiples especialistas que tratan pacientes con rinitis alérgica, valoró la calidad de la guía ARIA 2010, revisó y tradujo las preguntas clínicas clave y ajustó las recomendaciones, preferencias del paciente y comentarios a la realidad mexicana (seguridad, costos y aspectos culturales). Para lograrlo se corrieron páneles Delphi, con tantas rondas como fuera necesario hasta lograr un acuerdo. Por medio de una revisión sistemática de la bibliografía se creó una pregunta especial no incluida en ARIA 2010 de la utilidad de realizar lavados nasales en pacientes con rinitis alérgica. RESULTADOS: se incluyeron 45 preguntas de la guía original ARIA 2010, divididas en seis bloques que abarcan prevención, tratamiento médico, inmunoterapia y terapias alternativas de pacientes con rinitis alérgica con o sin asma. La mayor parte de las preguntas alcanzaron acuerdo en una a dos rondas, sólo una requirió tres para ello. CONCLUSIONES: se cuenta ahora con una guía de rinitis alérgica de usosencillo, adaptada, actualizada y válida para México.

[Use of cyanoacrylate in the endoscopic therapy of gastric varices: experience in the National Hospital Edgardo Rebagliati Martins from 2006 to 2010]. / Uso de cianoacrilato en la terapia endoscópica de várices gástricas: experiencia en el Hospital Nacional Edgardo Rebagliati Martins del 2006 al 2010.

OBJECTIVE: To evaluate the therapeutic success of the injection of N-butyl-2 cyanoacrylate in the treatment of gastric varices. METHODS: Cross-sectional study included 33 patients with gastric varices who only received cyanoacrylate endoscopic therapy between 2006 and 2010. Intravariceally, cyanoacrylate was injected in a 1:1 dilution with lipiodol until the obliteration of varices. The therapeutic situation was: active bleeding, varices with stigmata of recent bleeding and secondary prophylaxis. Treatment success was evaluated according to hemostasis, recurrent bleeding and obliteration. RESULTS: Of the 33 patients, 3 (9.1%) were for active bleeding, 20 (60.6%) with stigmata of recent bleeding and 10 (30.3%) as secondary prophylaxis. Gastric varices were GOV2, 17 (51.5%); IGV1, 14 (42.4%); GOV1, 2 (6.1%). Hemostasis was achieved in 21 (91.3%) and in 2 (66.7%) of 3 patients with active bleeding. Five (15.6%) patients had recurrent bleeding and 2 of them used cyanoacrylate with successful hemostasis. Obliteration was achieved. Four patients died and one for failure of control bleeding. A high severity of Child-Pugh classification was related to treatment endoscopic failure (p=0.034). The main complication was bleeding after the injection of cyanoacrylate. CONCLUSIONS: Our results support the use of cyanoacrylate in the treatment of gastric varices with few major complications.

Uso de Cianoacrilato en la Terapia Endoscópica de Várices Gástricas: experiencia en el Hospital Nacional Edgardo Rebagliati Martins del 2006 al 2010 / Use of cyanoacrylate in the endoscopic therapy of gastric varices: experience in the National Hospital Edgardo Rebagliati Martins from 2006 to 2010

OBJETIVO: Evaluar el éxito terapéutico de la inyección de N-butil-2-cianoacrilato en el tratamiento de las várices gástricas. MATERIALES Y MÉTODOS: Estudio transversal que incluyó 33 pacientes con várices gástricas que sólo recibieron terapia endoscópica con cianoacrilato entre el 2006 al 2010. El cianoacrilato fue inyectado intravaricealmente en una dilución 1:1 con lipiodol hasta obtener la obturación de las várices. La situación terapéutica fue: Hemorragia activa, várices con estigmas de sangrado reciente y profilaxis secundaria. El éxito del tratamiento se evaluó según la hemostasia, recurrencia de sangrado y obturación. RESULTADOS: De los 33 pacientes, 3 (9.1%) fueron por hemorragia activa, 20 (60.6%) con estigmas de sangrado reciente y 10 (30.3%) como profilaxis secundaria. Las várices fueron GOV2, 17 (51.5%); IGV1, 14 (42.4%) y GOV1, 2 (6.1%). Se logró hemostasia total en 21 (91.3%) pacientes con sangrado agudo o reciente y en 2 (66.7%) de 3 sujetos con sangrado activo. En 5 (15.6%) pacientes hubo recurrencia de sangrado y 2 de ellos recibieron cianoacrilato con éxito de hemostasia. Se logró obturación en 25 (75.8%) del total de pacientes. Cuatro pacientes fallecieron, uno por fracaso del control de sangrado. La mayor severidad de clasificación Child-Pugh se relacionó con falla terapéutica (p=0.034). La complicación principal fue el sangrado post-inyección del cianoacrilato. CONCLUSIONES: Nuestros resultados favorecen el uso de cianoacrilato en el tratamiento de várices gástricas, con raras complicaciones mayores.

OBJECTIVE: To evaluate the therapeutic success of the injection of N-butyl-2-cyanoacrylate in the treatment of gastric varices. METHODS: Cross-sectional study included 33 patients with gastric varices who only received cyanoacrylate endoscopic therapy between 2006 and 2010. Intravariceally, cyanoacrylate was injected in a 1:1 dilution with lipiodol until the obliteration of varices. The therapeutic situation was: active bleeding, varices with stigmata of recent bleeding and secondary prophylaxis. Treatment success was evaluated according to hemostasis, recurrent bleeding and obliteration. RESULTS: Of the 33 patients, 3 (9.1%) were for active bleeding, 20 (60.6%) with stigmata of recent bleeding and 10 (30.3%) as secondary prophylaxis. Gastric varices were GOV2, 17 (51.5%); IGV1, 14 (42.4%); GOV1, 2 (6.1%). Hemostasis was achieved in 21 (91.3%) and in 2 (66.7%) of 3 patients with active bleeding. Five (15.6%) patients had recurrent bleeding and 2 of them used cyanoacrylate with successful hemostasis. Obliteration was achieved in 25 (75.8%). Four patients died and one for failure of control bleeding. A high severity of Child-Pugh classification was related to treatment endoscopic failure (p=0.034). The main complication was bleeding after the injection of cyanoacrylate. CONCLUSIONS: Our results support the use of cyanoacrylate in the treatment of gastric varices with few major complications.

Sentinel lymph node biopsy in selected cases of ductal carcinoma in situ.

INTRODUCTION: Axillary lymphadenectomy is nowadays not recommended to treat ductal carcinoma in situ (DCIS), but there is controversy surrounding the indication for sentinel lymph node biopsy (SLNB). MATERIALS AND METHODS: A prospective study of a selected group of patients diagnosed preoperatively with DCIS was performed between 2004 and 2009. Indications for SLNB were histologically determined high-grade tumours, tumour size >2 cm and patients scheduled to undergo a mastectomy. RESULTS: Sixty-five patients were analysed. Surgical technique was mastectomy in 39 patients (60%) and conservative breast surgery in 26 (40%). Definitive histological study of the resected breast tumour revealed 43 cases (66.2%) of DCIS, 15 (23.1%) of ductal invasive carcinoma and seven (10.7%) microinvasive tumours. In confirmed DCIS, only 6.9% of sentinel lymph nodes were positive, in microinvasive carcinoma 28.5% and in invasive carcinoma 40% were positive. Total number of patients with positive sentinel lymph nodes was 11 (16.9%). Of 39 mastectomies, 12 corresponded to microinvasive or invasive carcinoma and six (50%) showed a positive SLNB. CONCLUSIONS: Performing SLNB avoids an unnecessary second surgery to study axillary lymph nodes in invasive carcinoma diagnosed after definitive histological study. In patients undergoing a mastectomy, this study requires an axillary lymphadenectomy that is not useful in up to 50% of cases. We think that in a selected group of patients with DCIS, SLNB improves tumour staging, adapts the treatment and avoids second surgery in this group of patients.

Prognostic and predictive factors and genetic analysis of early breast cancer.

The great heterogeneity of breast cancer makes it impossible to firmly predict which patients with early-stage tumours will or will not need systemic treatments according to the conventional prognostic factors currently employed. In fact, a substantial percentage of patients receive medical treatment for a disease that will not relapse, while another proportion of patients regarded as having good prognostic factors according to the classic criteria do not receive treatment and suffer disease relapse. Considering that most oncological treatments have short- and long-term toxic effects, new methods capable of offering a more precise prognosis need to be developed. The individualisation of the diagnosis of patients with breast cancer based on molecular and gene expression studies is bringing about a veritable revolution in our understanding of the biology of the disease. The new molecular classification of breast cancer, based on these profiles, allows us to establish a prognosis according to the genetic characteristics of each tumour. Such individualisation of the diagnosis of patients with breast cancer will lead to the application of more specific treatments, thereby improving patient survival with lesser toxicity and increased economic savings. Of the different genetic analytical tests available, MammaPrint has been shown to be the option offering the most information on the behaviour of early breast cancer; as a result, it is the most useful technique in deciding the need for oncological treatment as a complement to surgery.

[Giant esophageal fibrovascular polyp]. / Pólipo fibrovascular gigante de esófago.

Fibrovascular polyps are extremely rare benign neoplasias of the esophagus, which usually originate in the lower cricoid area. They do not produce any discomfort in the patient for a long time, however it may make itself evident by the patient's regurgitation of the polyp, producing asphyxia or, more frequently, dysphagia. The case of a 58 year old male patient is presented herein, with a 9 month record of dysphagia, weight loss and intermittent melena. The barium x-ray showed a distended esophagus, with a tumor running from the upper esophageal sphincter to the cardia. The endoscopy confirmed the presence of a pediculated tumor, implanted in the cervical esophagus. Surgeons suspected the potential malignancy of the tumor and performed a transhiatal esophagectomy. The final pathologic diagnosis was giant fibrovascular esophageal polyp.

Aneurismas cerebrales / Cerebral aneurysms

En el presente trabajo, hacemos una breve reseña histórica, desde la época de Sir Victor Horsley que en 1885 operó un paciente que tenía aneurisma cerebral, hasta la época actual de introducción de las técnicas endovasculares, considerando que del 1 al 5 por ciento de la población mundial puede tener un aneurisma, coincidimos que ellos son la mayor causa de hemorragia subaracnoidea. Revisamos la patogenia con sus dos líneas congénita y adquirida, dándose énfasis a la posibilidad genética. Se describen los tipos de aneurisma, así como los factores de riesgo y se analizan las características de la presentación clínica y las diferentes escalas de graduación para finalmente llegar al diagnóstico con la TAC, Anglio TAC, Resonancia Magnética y Angioresonancia, sin descuidar la clásica angiografía cerebral, particularmente la intraoperatoria, que resulta en una precoz verificación de la acción quirúrgica. Finalmente, se describe nuestra casuística microquirúrgica desde enero 1983 hasta julio del 2001, lapso en el cual hemos operado 731 aneurismas en 608 pacientes, con ligero predominio del sexo femenino entre ellos, habiéndose presentado en forma predominante entre la quinta y sétima década de vida. Se ha utilizado la clasificación de Fisher en la TAC y Hunt y Hess en la clínica, mostrándose localizaciones predominantes en el sifón carotideo, cerebral media y comunicante anterior. Siendo muy pequeño el porcentaje de localizaciones en el sistema vértebrobasilar. Estos resultados sugieren que esta patología puede ser tratada eficientemente en nuestro medio, debiéndose señalar que en los últimos años hemos puesto especial interés en el tratamiento microquirúrgico precoz, es decir en la primeras 72 horas de establecida la HSA.

Tratamiento quirúrgico de las malformaciones vasculares arteriovenosas / Surgical treatment of the vascular arteriovenous malformations

Presentamos una revisión, sobre el tratamiento multidisciplinario de las Malformaciones Vasculares Arteriovenosas (MAV) cerebrales. Nos basamos en la información histórica sobre el manejo de estas lesiones. Se destaca la importancia de establecer el grado de dificultad quirúrgica, fundamentado en la evaluación clínica pre y postoperatoria del paciente y en el análisis de los diferentes exámenes auxiliares de diagnóstico: TAC, RNM y Pangiografía. Se describe la técnica quirúrgica, haciendo énfasis en las malformaciones grandes, las paraventriculares y las de la fosa posterior. En términos de resultados presentamos la experiencia en 255 pacientes sometidos a diferentes tratamientos; casos sometidos a cirugía, casos sometidos a terapia endovascular, a terapia endovascular y cirugía, a terapia endovascular y radiocirugía. Se analiza la morbi-mortalidad. Como conclusión creemos que la resección quirúrgica es la alternativa terapéutica más recomendable para la mayoría de los casos, teniendo en cuenta que la embolización y la radiocirugía son alternativas que pueden formar parte del tratamiento total, parcial o complementario.

Evaluación del tratamiento quirúrgico de los aneurismas cerebrales. Hospital G. Almenara 1983-1996 / Outcome of cerebral aneurysm surgery. Hospital Guillermo Almenara Irigoyen 1983-1996

Evaluar los factores que intervinieron en la evolución final de los pacientes operados de aneurismas cerebrales en el Hospital Guillermo Almenara Irigoyen-Lima, entre enero de 1983 y octubre de 1996. Se estudio 369 pacientes evaluando las variables que pudieron haber influido en su evolución, como edad, grado de hemorragía subaracnoidea, localización del aneurisma, presencia de otros aneurismas o malformaciones asociadas y complicaciones médicas y quirúrgicas. El 57.7 por ciento de los pacientes fueron mujeres. La edad promedio fue 46,6 ñ 14,57. Según el grado de severidad de la hemorragia subaracnoidea, los grados II y III de Hunt y Hess fueronlos más frecuentes (85 por ciento). La localización más frecuente fue sifón carotídeo (28,67 por ciento). La evolución al alta fue muy buena en el 42,5 por ciento y buena en el 32,5 por ciento. A mayor grado de severidad según Hunt y Hess, Mayor morbimortalidad. Entre quienes presentaron neumonía como complicación, el 50 por ciento fallecieron. La evolución posoperatoria de estos pacientes es similar a la reportada en la literatura mundial. La neumonía se constituyo en una complicación importante.

Terapia endovascular del sistema nervioso cedntral factibilidad de su aplicación en nuestro medio

Se estudiaron 28 pacientes portadores de lesiones neurovasculares complejas, tales como fístulas arteriovenosas, malformaciones arteriovenosas, aneurismas gigantes y tumores hipervasculares, los cuales fueron tratados mediante técnicas endovasculares. Se evaluaron los hallazgos clínico radiológicos, así como la estrategia, materiales embólicos, resultados y complicaciones ded la embolización, demostrándose la factibilidad de: 1) Acceder por vía endovascular mediante microcatéteres al interior de lesiones neurovasculares complejas. 2) Realizar una evaluación angiográfica superselectiva de las mismas. 3) Colocar por vía endovascular y en el seno de estas lesiones, agentes terapéuticos trombogénicos con resultados curativos, coadyuvantes a la cirugía o paliativos con un mínimo de morbilidad