Implementation of a roadmap for the comprehensive diagnosis, follow-up, and research of childhood leukemias in vulnerable regions of Mexico: results from the PRONAII Strategy.

The main objective of the National Project for Research and Incidence of Childhood Leukemias is to reduce early mortality rates for these neoplasms in the vulnerable regions of Mexico. This project was conducted in the states of Oaxaca, Puebla, and Tlaxcala. A key strategy of the project is the implementation of an effective roadmap to ensure that leukemia patients are the target of maximum benefit of interdisciplinary collaboration between researchers, clinicians, surveyors, and laboratories. This strategy guarantees the comprehensive management of diagnosis and follow-up samples of pediatric patients with leukemia, centralizing, managing, and analyzing the information collected. Additionally, it allows for a precise diagnosis and monitoring of the disease through immunophenotype and measurable residual disease (MRD) studies, enhancing research and supporting informed clinical decisions for the first time in these regions through a population-based study. This initiative has significantly improved the diagnostic capacity of leukemia in girls, boys, and adolescents in the regions of Oaxaca, Puebla, and Tlaxcala, providing comprehensive, high-quality care with full coverage in the region. Likewise, it has strengthened collaboration between health institutions, researchers, and professionals in the sector, which contributes to reducing the impact of the disease on the community.

[Transculturation and validation of a Questionnaire Factors Influencing Organ Donation]. / Transculturación y validación del cuestionario Factores que influyen en la Donación de Órganos.

Background: There are validated questionnaires in Spanish that evaluate the factors that influence organ donation, but they are not designed for the open population or do not delve into various aspects such as the one proposed. Objective: Validate an instrument to evaluate the factors that influence organ donation in Mexico. Material and methods: Phase 1: Development of the instrument. Translation into Spanish of the questionnaire "Factors Inffluencing Organ Donation in Qatar", adapted by experts in donation and clinimetry. Simultaneously, the definitive version of the questionnaire "Factors that Influence Organ Donation" (FIDO) and the questionnaire "International Donor Collaborative Project" were applied to patients, relatives and staff of a tertiary hospital in Puebla, Mexico. Mind a week after 200 respondents. Cronbach's Alpha (AC) (internal consistency), Intraclass Correlation Coefficient (ICC) (external consistency), and Phi (Phi) and Chi square Coefficient (concurrent validity in intention to donate) were obtained. Results: AC and ICC by domain: Knowledge 0.625 and 0.372; Attitudes 0.776 and 0.761; Beliefs 0.649 and 0.633; Intentions 0.126 and 0.123; Phi: 0.976, Chi square: 2.358 (p = 0.125). Conclusions: The FIDO questionnaire is valid and consistent to assess knowledge, attitudes, beliefs and intentions in organ donation in the general Mexican population.

Introducción: existen cuestionarios validados en español que evalúan los factores que influyen en la donación de órganos, pero no están diseñados para población abierta o no exploran aspectos diversos como el propuesto. Objetivo: validar un instrumento para evaluar los factores que influyen en la donación de órganos en México. Material y métodos: fase 1: Elaboración del instrumento. Traducción al español del cuestionario Factors Influencing Organ Donation in Qatar, adaptado por expertos en donación y clinimetría. Se realizaron pruebas piloto hasta lograr acuerdo en dos rondas consecutivas. Fase 2: Validez y consistencia. Simultáneamente se aplicó la versión definitiva del cuestionario Factores que Influyen en la Donación de Órganos (FIDO) y el cuestionario Proyecto Colaborativo Internacional Donante a pacientes, familiares y personal de un hospital de tercer nivel de Puebla, México. Se reaplicó telefónicamente una semana después a 200 respondientes. Se utilizó alfa de Cronbach (AC) (consistencia interna), coeficiente de correlación intraclase (CCI) (consistencia externa), y coeficiente de Phi (Phi) y Chi cuadrada (validez concurrente en intención de donar). Resultados: AC y CCI por dominio: Conocimiento 0.625 y 0.372; Actitudes 0.776 y 0.761; Creencias 0.649 y 0.633; Intenciones 0.126 y 0.123; Global 0.774 y 0.675, respectivamente (p = 0.000); Phi: 0.976, Chi cuadrada: 2.358 (p = 0.125). Conclusiones: el cuestionario FIDO es válido y consistente para explorar: conocimiento, actitudes, creencias e intenciones en donación de órganos en población general mexicana.

Galectin-9 Expression is Correlated to Cervical Squamous Cell Carcinoma Progression and Overall Survival.

Purpose: To determine whether galectin-9 gene (LGALS9) expression is correlated with cervical cancer progression, clinicopathological characteristics, and overall survival. To determine the biological processes and the abundance of tumour infiltrating immune cells related to the expression of LGALS9. Patients and Methods: The study was conducted in two phases: 1) The expression level of LGALS9 was determined using the data of 193 squamous cell carcinoma (SCC) samples from The Cancer Genome Atlas (TCGA) database. Biological processes and tumour infiltrating cells associated to LGALS9 expression were evaluated using gene set enrichment analysis (GSEA) and tumour immune estimation resource (TIMER). 2) Independently, galectin-9 was identified in 40 SCC samples by immunohistochemistry and optical density quantified using ImagePro® software. Results: The LGALS9 gene showed increased expression in cervical cancer samples. A higher expression level in SCC was related to better overall survival and to early clinical stages. GSEA showed that tumours with higher expression of LGALS9 were enriched in immune pathways such as interferon_alpha_response, and complement, the analysis of TIMER database showed a positive correlation between the expression level of LGALS9 and the abundance of tumour infiltrating immune cells. In addition, higher expression of galectin-9 was found in biopsies of SCC patients at early clinical stages, showing a trend of better survival. Conclusion: Higher expression levels of LGALS9 and galectin-9 in SCC were related to early clinical stages and better prognosis. GSEA and TIMER analysis suggested that galectin-9 could play an antitumor role in cervical SCC.

Timely radiographic detection of developmental dysplasia of the hip in family medicine residents. Educative intervention.

BACKGROUND: Developmental dysplasia of the hip (DDH) is a complex clinical entity that is usually underdiagnosed, if not detected and managed early, will turn the affected individual into a disabled being, with negative social, economic and emotional effects. OBJECTIVE: To determine the capacity for the timely radiographic detection of DDH before and after an educational intervention. METHOD: An educational intervention is carried out in family medicine resident, where they are given training on detection in DDH radiographic projections. Pre- and post-training evaluation is carried out. Statistical analysis is performed using Student's t and χ2, taking p ≤ 0.05 as significant. RESULTS: 94 residents participated. In the pre-intervention evaluation, 87.2% had no knowledge of the early detection protocol (p = 0.525). It was observed that 98.9% incorrectly drew the Perkins line (p = 0.427), 96.8% the Hilgenreiner line (p = 0.177) and 87.2% did not consider the data of bilateral dysplasia (p = 0.956). After the educational intervention, 87.2% correctly drew the Perkins line (p = 0.926), 97.8% the Hilgenreiner line (p = 0.325) and 78.7% if they considered the data of bilateral dysplasia (p = 0.826). CONCLUSIONS: After this training, 80% of family medicine residents were able to detect DDH in a timely manner.

ANTECEDENTES: La displasia del desarrollo de la cadera (DDC) constituye una entidad clínica compleja que suele ser infradiagnosticada que, de no ser precozmente detectadas y manejadas, convertirán al individuo afectado en un ser discapacitado, con efecto negativo social, económico y emocional. OBJETIVO: Determinar la capacidad para la detección radiográfica oportuna de la DDC antes y después de una intervención educativa en médicos residentes de medicina familiar. MÉTODO: Se realizó una intervención educativa en residentes de medicina familiar, en la que se les dio capacitación sobre detección de DDC en proyecciones radiográficas. Se realizó una evaluación previa y posterior a la capacitación. El análisis estadístico se realizó mediante pruebas t de Student y χ2, tomando como significativo un valor de p ≤ 0.05. RESULTADOS: Participaron 94 residentes. El 87.2% dijeron no conocer el protocolo radiológico de detección. En la evaluación preintervención, el 87.2% no tenían conocimiento del protocolo (p = 0.525). Se observó que el 98.9% trazaron de manera incorrecta la línea de Perkins (p = 0.427), el 96.8% la línea de Hilgenreiner (p = 0.177) y el 87.2% no consideraron los datos de displasia bilateral (p = 0.956). Posterior a la intervención educativa, el 87.2% trazaron de manera correcta la línea de Perkins (p = 0.926), el 97.8% la línea de Hilgenreiner (p = 0.325) y el 78.7% sí consideró los datos de displasia bilateral (p = 0.826). CONCLUSIONES: Tras la capacitación, el 80% de los médicos residentes de medicina familiar fueron capaces de detectar oportunamente la DDC.

[Clinical and histopathological characteristics of malignant colon tumors by location]. / Características clínicas e histopatológicas de los tumores malignos de colon por localización.

Background: The colon has two different embryological origins, which is why it can be divided into right and left with different characteristics each one; therefore, neoplastic lesions have a different clinical picture and are also associated with different pathologies. Objective: To describe the clinical and histopathological characteristics of malignant colon tumors acording to their location. Material and methods: Descriptive, retrospective study with 94 patients diagnosed with colon cancer. Descriptive statistics were performed with the calculation of frequencies and percentages, and chi-squared tests were calculated. Results: Mean age was 61.3 years, 49 (52.1%) were women; 53 (56.4%) were left-sided and 41 (43.6%) right-sided. The main symptom was hematochezia in 32 (60.4%), in patients with left cancer; and diarrhea in 20 (48.8%), in patients with right-sided colon cancer. The presentation of stage I tumors and polyps, p = 0.044 and p = 0.043, respectively, was more frequent on the right side compared to the left side; in the left, hematochezia (p = 0.001), narrow stools(p = 0.05), and a history of type 2 diabetes mellitus (T2DM) (p= 0.036) were more frequent compared to the opposite site. Conclusions: Stage I and the presence of polyps were more frequent in right-sided cancer compared to left-sided cancer; T2DM, as well as hematochezia and narrow stools were more associated with the left side compared to the right side.

Introducción: el colon tiene dos orígenes embriológicos distintos, con lo que se puede dividir en derecho e izquierdo y cada uno tiene características diferentes; por tanto, las lesiones neoplásicas tienen un cuadro clínico diferente y se asocian también a diferentes patologías. Objetivo: describir las características clínicas e histopatológicas de los tumores malignos de colon según su localización. Material y métodos: estudio descriptivo, retrospectivo con 94 pacientes con diagnóstico de cáncer de colon. La estadística descriptiva se realizó con el cálculo de frecuencias y porcentajes, y se aplicaron pruebas de chi cuadrada. Resultados: la edad media fue 61.3 años, 49 (52.1%) fueron mujeres; 53 (56.4%) casos fueron izquierdos y 41 (43.6%) derechos. El síntoma principal fue hematoquecia en 32 (60.4%), en pacientes con cáncer izquierdo; y diarrea en 20 (48.8%), en pacientes con cáncer derecho. La presentación de tumores en estadio I y pólipos, p = 0.044 y p = 0.043, respectivamente, fue más frecuente en el lado derecho comparado con el lado izquierdo; en el izquierdo fueron más frecuentes la hematoquecia (p = 0.001), la disminución del grosor de las heces (p = 0.05) y el antecedente de diabetes mellitus 2 (p= 0.036) respecto al sitio contrario. Conclusiones: el estadio I y la presencia de pólipos fueron más frecuentes en el cáncer derecho comparado con el izquierdo; la diabetes mellitus 2, así como la hematoquecia y la disminución en el grosor de las heces se asociaron más al lado izquierdo en comparación con el derecho.

[Rapunzel syndrome: Radiological diagnosis]. / Síndrome de Rapunzel: diagnóstico radiológico.

Background: Rapunzel syndrome is a rare presentation of trichobezoar, secondary to the ingestion of hair known as trichophagia. This bezoar has been found mainly in women, it invades the stomach and extends to the small intestine. Clinically, patients present weight loss and chronic obstructive symptoms at the intestinal level. A case of Rapunzel syndrome is presented. Clinical case: A 13-year-old female presented with a weight loss of 10kg in two months, chronic constipation, predominantly nocturnal vomiting, and abdominal pain of seven days' duration. Physical examination revealed decreased peristalsis and a palpable mass in the epigastrium. Laboratories taken on admission: normal blood count, kidney function tests, and liver function tests. The abdominal X-ray showed opacity in the fundus, body and gastric antrum, the abdominal ultrasound showed non-specific findings in the epigastrium, later an abdominal tomography was performed with a swallow of water-soluble contrast medium and showed occupation in the gastric lumen. She underwent exploratory laparotomy and the finding was a trichobezoar in the stomach with extension to the duodenum and part of the jejunum, which was removed without complications. The evolution of the patient was favorable. Conclusions: For the diagnosis of Rapunzel Syndrome, the use of contrast imaging studies is necessary, and the treatment of choice is surgical.

Introducción: el síndrome de Rapunzel es una presentación poco frecuente de tricobezoar, secundario a la ingesta de cabello conocida como tricofagia. Este bezoar se ha encontrado principalmente en mujeres, invade estómago y se extiende a intestino delgado. Clínicamente, los pacientes presentan pérdida de peso y síntomas crónicos de tipo obstructivo a nivel intestinal. Se presenta un caso de síndrome de Rapunzel. Caso clínico: paciente mujer de 13 años que se presenta con pérdida de peso de 10 kg en dos meses, estreñimiento crónico, vómito de predominio nocturno y dolor abdominal de siete días de evolución. A la exploración física, se encontró peristalsis disminuida y masa palpable en epigastrio. Laboratorios tomados a su ingreso: biometría hemática, pruebas de función renal y hepáticas normales. La radiografía de abdomen mostró opacidad en fundus, cuerpo y antro gástrico, la ecografía de abdomen mostró hallazgos inespecíficos en epigastrio, posteriormente se realizó tomografía abdominal con trago de medio de contraste hidrosoluble y mostró ocupación en la luz gástrica. Se sometió a laparotomía exploradora y el hallazgo fue un tricobezoar en estómago con extensión a duodeno y parte de yeyuno, fue removido sin complicaciones. La evolución de la paciente fue favorable. Conclusiones: para el diagnóstico del síndrome de Rapunzel es necesario el uso de estudios de imagen contrastados y el tratamiento de elección es quirúrgico.

Soluciones antisépticas en la prevención de infección de herida quirúrgica en pacientes operados por apendicitis aguda complicada prevención de infección de herida quirúrgica

Introducción: La infección de la herida quirúrgica en apendicitis aguda complicada es frecuente. Objetivo: El objetivo fue comparar la solución Dakin y la Superoxidativa para prevenir infecciones de herida quirúrgica en pacientes con apendicitis aguda complicada. Métodos: Estudio comparativo, transversal, en 104 pacientes con apendicitis aguda complicada (Edad media: 36.29 años, 69(66.43%) hombres). Grupo-1: 52 pacientes, con lavado de herida quirúrgica con solución Dakin modificada. Grupo-2: 52 pacientes con solución superoxidativa (Microdacyn®). Se administró ceftriaxona 1 gr antes de la cirugía, se realizó apendicectomía convencional y cierre de pared con Vicryl-1 y Nylon-2/0. Se evaluó herida quirúrgica 7 días después de la operación, registrando presencia de pus, edema, eritema y calor local. Se utilizaron X2 y t de Student. Resultados: Se presentó infección de herida quirúrgica en 11(10.6%) pacientes; 3(5.8%) pacientes del Grupo-1 y 8(15.4%) del Grupo-2 (p=0.1). Conclusión: Ambas soluciones son útiles para prevenir infecciones de herida quirúrgica en pacientes con apendicitis aguda complicada.

Introduction: The infection of the surgical wound in a complicated acute appendicitis is common. Objective: The objective was to compare Dakin and Superoxidative solutions in preventing surgical wound infections in patients with complicated acute appendicitis. Methods: Comparative, cross-sectional study of 104 patients with complicated acute appendicitis (Average age: 36.29 years, 69 (66.43%) men). Group-1: 52 patients, with surgical wound wash using modified Dakin's solution. Group-2: 52 patients with superoxidative solution (Microdacyn®). Ceftriaxone 1 gr was administered before surgery, conventional appendectomy was performed, and the wall was closed with Vicryl-1 and Nylon-2/0. The surgical wound was evaluated 7 days after the operation, noting the presence of pus, edema, erythema, and local heat. Chi-squared (X2) and Student's t-tests were used. Results: Surgical wound infection occurred in 11 (10.6%) patients; 3 (5.8%) patients from Group-1 and 8 (15.4%) from Group-2 (p=0.1). Conclusion: Both solutions are useful in preventing surgical wound infections in patients with complicated acute appendicitis.

Asociación entre parámetros hematológicos y fenotipos metabólicamente poco saludables en niños y adolescentes

Introducción: El síndrome metabólico se ha asociado con cambios en parámetros hematológicos (glóbulos rojos, plaquetas y leucocitos); se pueden utilizar para identificar sujetos en riesgo de fenotipos metabólicamente no saludables (MUP). Se investigó si estos parámetros hematológicos sirven como biomarcadores para distinguir el fenotipo metabólicamente sano (MHP) del MUP en niños y adolescentes. Métodos: Estudio transversal, 292 niños y adolescentes. El diagnóstico de MUP fue según consenso. Se utilizó ANOVA unidireccional en las comparaciones, regresión logística múltiple para determinar si el sexo, el grupo etario, el estado nutricional, la pubertad, los parámetros hematológicos y la resistencia a la insulina se asociaron con MUP. Resultados: Edad media 11 años (DE: 2,61). Los valores de RDW fueron significativamente más bajos en los niños en el grupo de peso normal metabólicamente insalubre (MUNW) en comparación con los niños con obesidad metabólicamente no saludable (MUO) (12,33 ± 0,90 vs. 13,67 ± 0,52; p = 0,01) y en la obesidad metabólicamente saludable (MHO) en comparación con el grupo MUO (13,15 ± 0,53 vs. 13,67 ± 0,52; p = 0,04). En adolescentes, la relación plaquetas/linfocitos fue mayor en el grupo MHNW (con un valor medio de 152,60 (DE 62,97) vs 111,16 (DE 44,12) para el grupo MHO. Al ajustar por edad, estado nutricional y pubertad, los índices hematológicos no se asociaron con MUP. Conclusión: Los parámetros hematológicos no están asociados independientemente con el MUP, y es poco probable que representen biomarcadores confiables para la detección del MUP en la población pediátrica.

Introduction: Metabolic syndrome has been associated with changes in several hematological parameters, such as red blood cells, platelets, and leucocytes. Therefore, hematologic parameters can be used to identify the subjects at risk of metabolically unhealthy phenotypes (MUP). The current study investigated if hematological parameters can serve as biomarkers to distinguish metabolically healthy phenotype (MHP) from MUP in children and adolescents. Methods: Two hundred ninety-two children and adolescents were enrolled in this cross-sectional study. The MUP was diagnosed using consensus-based criteria. Group comparisons were performed using one-way ANOVA. Multiple logistic regression analysis was used to determine if sex, age group, nutritional status, puberty, hematological parameters, and insulin resistance were associated with MUP. Results: The subject's age mean was 11 years (SD: 2.61). RDW values were significantly lower in children in the metabolically unhealthy normal weight (MUNW) group compared to children with metabolically unhealthy obesity (MUO) group (12.33 ± 0.90 vs. 13.67 ± 0.52; p = 0.01) and in metabolically healthy obesity (MHO) compared to MUO group (13.15 ± 0.53 vs. 13.67 ± 0.52; p = 0.04). In adolescents, the platelet-to-lymphocyte ratio was higher in the MHNW group, with a mean value of 152.60 (SD 62.97) compared to 111.16 (SD 44.12) for the MHO group. However, after adjusting for age, nutritional status, and puberty, hematological indices were not associated with MUP. Conclusions: The study demonstrates that hematologic parameters are not independently associated with the MUP, and it is unlikely that they represent reliable biomarkers for screening for the MUP in the pediatric population.

Funcionalidad antes y después de fisioterapia en pacientes post Covid-19

Introducción: El COVID-19 es una enfermedad que desde su aparición en 2019 ha representado un reto para los servicios sanitarios. Las secuelas son consecuencia de un deterioro de la calidad de vida, fatiga, disnea y dolor articular. Objetivo: Comparar parámetros funcionales físicos, respiratorios, cognitivos y de independencia funcional en pacientes post COVID-19, con secuelas respiratorias antes y después de un programa de terapia física y ocupacional respiratoria. Métodos: Se realizó un estudio comparativo, cuasiexperimental, prospectivo en pacientes ambulatorios egresados de hospitalización por COVID-19 en un Hospital de 3er nivel de atención del Instituto Mexicano del Seguro Social en Puebla, México durante 2020-2021. Se aplicaron escalas antes y después del programa de rehabilitación. Se utilizó estadística analítica. Resultados: Se incluyeron 116 pacientes, 57,7% hombres, edad media de 47,32 años (min. 20, máx. 79); 77 (66,3%) pacientes presentaron síntomas moderados en hospitalización. Se obtuvo un valor de p significativa (p <0,001). Conclusión: Se observa una mejoría significativa en los pacientes post COVID-19 tras recibir terapia física y ocupacional respiratoria.

Introduction. COVID-19 is a disease that since its emergence in 2019 has represented a challenge for healthcare services. The sequelae result from impaired quality of life, fatigue, dyspnea and joint pain. Objective. To compare physical, respiratory, cognitive and functional independence functional parameters in post-COVID-19 patients with respiratory sequelae before and after a respiratory physical and occupational therapy program. Methods. A comparative, quasi-experimental, prospective study was conducted in outpatients discharged from hospitalization for COVID-19 in a 3rd level of care Hospital of the Mexican Institute of Social Security in Puebla, Mexico during 2020-2021. Scales were applied before and after the rehabilitation program. Analytical statistics were used. Results. We included 116 patients, 57.7% men, mean age 47.32 years (min. 20, max. 79); 77 (66.3%) patients presented moderate symptoms in hospitalization. A significant p-value was obtained (p <0.001). Conclusion. Significant improvement is observed in post-COVID-19 patients after receiving respiratory physical and occupational therapy.

Donated Blood Screening for HIV, HCV and HBV by ID-NAT and the Residual Risk of Iatrogenic Transmission in a Tertiary Care Hospital Blood Bank in Puebla, Mexico.

Hepatitis C virus (HCV), human immunodeficiency virus (HIV) and hepatitis B virus (HBV) can be transmitted by blood transfusion. Most transmission occurs during the acute viremic phase (AVP), before antibody development. To reduce transmission risk, individual donor nucleic acid testing (ID-NAT) is used. In Puebla, Mexico, serological tests and ID-NAT have been applied to screen blood donors and detect individuals in AVP. In the present study, 106,125 blood donors' data in two periods (2012-2015 and 2017-2019) were analyzed. The residual risk (RR) values were calculated considering ID-NAT results. The RR for HIV was 14 in 1 million donations or 1 in 71,428, the RR for HVC was 6.8 in 1 million donations or 1 in 147,058 and, for HBV, it was 156 in 1 million donations, or 1 in 6410. Previously, it was predicted that the transmission RR of these viruses would be reduced in Mexico through better screening with NAT. The use of ID-NAT has, indeed, increased the safety of blood reserves for HIV and HCV. However, more research is needed to determine why the residual risk of HBV did not decrease as much over the study period. ID-NAT is an important complementary tool for blood donor screening that should be implemented.

[Comparison of protective colostomy vs. ileostomy in rectal cancer surgery]. / Comparación de colostomía frente a ileostomía de protección en cirugía de cáncer rectal.

Background: Rectal cancer (RC) is the 3rd most frequent one in Mexico. Protective stoma in resection and anastomosis is controversial. Objective: To compare quality of life (QoL), functional capacity (FC) and complications in rectal cancer (RC) patients with low and ultralow anterior resection (LAR and ULAR) with loop transverse colostomy (LTC) versus protective ileostomy (IP). Material and methods: Comparative, observational study in patients with RC and LTC (Group 1) or IP (Group 2) from 2018-2021. FC pre and postoperative, complications, hospital readmission (HR) and assessment by other specialty (AS) were assessed; QoL was assessed with EQ-5D by telephone. Student-t test, Chi-squared test, Mann-Whitney-U test were used. Results: Group 1: 12 patients: mean preoperative FC: ECOG 0.83, Karnofsky 91.66%; postoperative: ECOG 1, Karnofsky 89.17%. Mean postoperative QoL: index value 0.76 and health status 82.5%; HR: 25%; AS: 42%. Group 2: 10 patients: mean preoperative FC: ECOG 0.80, Karnofsky 90%; postoperative: ECOG 1.5, Karnofsky 84%. Mean postoperative QoL: index value 0.68 and health status 74%; HR: 50%; AS: 80%. Complications: 100% of sample. Conclusion: The differences in QoL, FC and complications between LTC and IP in RC patients operated with LAR/ULAR were not significant.

Introducción: el cáncer rectal (CR) es el tercero más frecuente en México. El estoma de protección en la resección y anastomosis es controversial. Objetivo: comparar calidad de vida (CV), capacidad funcional (CF) y complicaciones (COMP) en pacientes con CR con resección anterior baja (RAB) y ultrabaja (RAUB) con colostomía de transverso en asa (CTA) frente a ileostomía de protección (IP). Material y métodos: estudio comparativo, observacional, en pacientes con CR con CTA (Grupo 1) o IP (Grupo 2) atendidos en 2018-2021. Se evaluó CF (escalas ECOG y Karnofsky) pre y posquirúrgicas, COMP, reingreso hospitalario (RH) y valoración por otra especialidad (VE). Se evaluó CV con la encuesta EQ-5D vía telefónica. Se utilizó t de Student, Chi cuadrada y U de Mann-Whitney. Resultados: grupo1: 12 pacientes; CF media prequirúrgica ECOG: 0.83, Karnofsky: 91.66%; posquirúrgica ECOG: 1, Karnofsky: 89.17%. CV posquirúrgica medias valor índice: 0.76 y estado funcional: 82.5%; RH: 25%, VE: 42%. Grupo 2: 10 pacientes; CF media prequirúrgica ECOG: 0.80, Karnofsky: 90%; CF media postquirúrgica ECOG: 1.5, Karnofsky: 84%; CV medias valor índice: 0.68, estado funcional: 74%; RH: 50%, VE: 80%. COMP: 100% de la muestra. Conclusiones: las diferencias en CV, CF y COMP entre CTA e IP en pacientes con CR con RAB/RAUB no fueron significativas.

[Cognition in medical residents with and without anxiety in a specialist training hospital]. / Cognición en médicos residentes con y sin ansiedad en un hospital formador de especialistas.

Background: The resident doctor plays an important role in people's health care. Objective: To compare the cognition of medical residents with/without anxiety in a specialist training hospital. Material and methods: Comparative, prospective, cross-sectional study. Medical residents of any grade and specialty were included, who signed informed consent. Those with a diagnosis of cognitive impairment were excluded, and who did not complete the tests were eliminated. AMAS-A test was applied to assess anxiety and NEUROPSI: Attention and memory test for cognitive characteristics. Mann-Whitney's U and Spearman's rho were used, p≤0.05 was considered significant. Results: 155 residents were evaluated, 55.5% men, mean age 32.4 years. Internal Medicine was the predominant specialty (25.2%). AMAS-A identified 94.19% residents with anxiety. NEUROPSI reported Attention and memory domain (38.7%) in normal classification, Memory (34.2%) in high normal, and Attention and executive functions (32.3%) in severe alteration as predominant assessments. Only Memory showed a significant difference between residents with and without anxiety (p=0.015). Attention and executive functions-Physiological anxiety (r=-0.21, p=0.009) and Attention and memory-Social concern (r=-0.268, p=0.001) correlations were significant. Conclusions: The percentage of anxiety and cognitive alterations in residents physicians is high. Anxiety decisively affects memory capacity in these medical doctors.

Introducción: el médico residente desempeña un papel importante en la atención a la salud de los pacientes. Objetivo: comparar la cognición de médicos residentes con y sin ansiedad en un hospital formador de especialistas. Material y métodos: estudio comparativo, prospectivo, transversal, en médicos residentes de cualquier grado y especialidad, que firmaron consentimiento informado. Se excluyeron aquellos con diagnóstico de alteración cognitiva y se eliminaron los que no completaron las pruebas realizadas. Se aplicaron AMAS-A para evaluar ansiedad y NEUROPSI: Atención y memoria para características cognitivas. Se utilizaron U de Mann-Whitney, y rho de Spearman. Se consideró significativa una p ≤ 0.05. Resultados: se evaluaron 155 residentes, 55.5% hombres, edad media 32.4 años. Medicina Interna fue la especialidad predominante (25.2%). Se identificó ansiedad en el 94.19% de los residentes. Predominaron los dominios Atención y memoria en clasificación normal (38.7%), Memoria en normal-alto (34.2%) y Atención y funciones ejecutivas en alteración severa (32.3%). Memoria mostró diferencia significativa entre residentes con y sin ansiedad (p = 0.015). Las correlaciones de Atención y funciones ejecutivas-Ansiedad fisiológica (r = -0.21, p = 0.009) y Atención y memoria-Preocupación social (r = -0.268, p = 0.001) resultaron significativas. Conclusiones: el porcentaje de ansiedad y alteraciones cognitivas en residentes es alto. La ansiedad afecta decisivamente la capacidad de memoria en estos médicos.

[Pain after panretinal photocoagulation: 50-millisecond pulse versus conventional pulse]. / Dolor posterior a panfotocoagulación retiniana: impulso de 50 milisegundos frente a impulso convencional.

Background: Diabetic retinopathy is a progressive disfunction of blood vessels of the retina secondary to chronic hyperglycemia. There are several treatments, out of which panretinal photocoagulation (PRP) stands out. Objective: To compare the level of pain in patients undergoing PRP with different impulse. Material and methods: Comparative, cross-sectional study that compared the level of pain in patients undergoing PRP with a 50-millisecond pulse (group A) versus conventional 200 milliseconds pulse (group B). Mann-Whitney U test was used. Results: There were 26 patients, 12 (46.16%) female and 14 (53.84%) males. The median age was 58.73 ± 7.31 (40-75) years. 40 eyes were studied, 18 (45%) right and 22 (55%) left. The mean level of glycated hemoglobin was 8.15 ± 1.08 (6.5-12) %. The mean laser power was 297 ± 53.61 (200-380) and 214.5 ± 41.73 (170-320) milliwatts; the mean fluence was 18.85 ± 5.28 (12-28) J/cm2 and 65.9 ± 12.87 (52-98) J/cm2; the mean level of pain was 3.1 ± 1.33 (1-5) and 7.5 ± 1.23 (6-10) points for group A and B, respectively, and there was statistically significant difference (p ˂ 0.001) in the level of pain. There were no complications in any group. Conclusion: The application of retinal 50-millisecond pulse PRP causes less pain and side effects than 200-millisecond pulse PRP.

Introducción: la retinopatía diabética es una disfunción progresiva del sistema vascular de la retina que es secundaria a una hiperglucemia crónica. Hay varias opciones de tratamiento, entre las que destaca la panfotocoagulación. Objetivo: comparar el nivel de dolor en pacientes sometidos a panfotocoagulación retiniana con diferente impulso. Material y métodos: estudio comparativo, transversal, que comparó el nivel de dolor en pacientes sometidos a panfotocoagulación con impulso de 50 milisegundos (grupo A) frente a impulso convencional de 200 milisegundos (grupo B). Se utilizó U de Mann Whitney. Resultados: fueron 26 pacientes, 12 (46.16%) mujeres y 14 (53.84%) hombres. La edad mediana fue 58.73 ± 7.31 (40-75) años. Se estudiaron 40 ojos, 18 (45%) derechos y 22 (55%) izquierdos. El nivel medio de hemoglobina glucosilada fue 8.15 ± 1.08 (6.5-12)%. La potencia láser media fue 297 ± 53.61 (200-380) y 214.5 ± 41.73 (170-320) miliwatts, la fluencia media fue 18.85 ± 5.28 (12-28) J/cm2 y 65.9 ± 12.87 (52-98) J/cm2, el nivel medio de dolor fue 3.1 ± 1.33 (1-5) y 7.5 ± 1.23 (6-10) puntos para el grupo A y B, respectivamente y hubo diferencia estadísticamente significativa (p ≤ 0.001) en el nivel de dolor. En ningún grupo hubo complicaciones. Conclusión: la aplicación de panfotocoagulación retiniana con impulso de 50 milisegundos provoca menos dolor y efectos secundarios que la panfotocoagulación con impulso de 200 milisegundos.

Pictograms to assess bloating and distension symptoms in the general population in Mexico: Results of The Rome Foundation Global Epidemiology Study.

BACKGROUND: There is no term for bloating in Spanish and distension is a very technical word. "Inflammation"/"swelling" are the most frequently used expressions for bloating/distension in Mexico, and pictograms are more effective than verbal descriptors (VDs) for bloating/distension in general GI and Rome III-IBS patients. However, their effectiveness in the general population and in subjects with Rome IV-DGBI is unknown. We analyzed the use of pictograms for assessing bloating/distension in the general population in Mexico. METHODS: The Rome Foundation Global Epidemiology Study (RFGES) in Mexico (n = 2001) included questions about the presence of VDs "inflammation"/"swelling" and abdominal distension, their comprehension, and pictograms (normal, bloating, distension, both). We compared the pictograms with the Rome IV question about the frequency of experiencing bloating/distension, and with the VDs. KEY RESULTS: "Inflammation"/"swelling" was reported by 51.5% and distension by 23.8% of the entire study population; while 1.2% and 25.3% did not comprehend "Inflammation"/"swelling" or distension, respectively. Subjects without (31.8%) or not comprehending "inflammation"/"swelling"/distension (68.4%) reported bloating/distension by pictograms. Bloating and/or distension by the pictograms were much more frequent in those with DGBI: 38.3% (95%CI: 31.7-44.9) vs. without: 14.5% (12.0-17.0); and in subjects with distension by VDs: 29.4% (25.4-33.3) vs. without: 17.2% (14.9-19.5). Among subjects with bowel disorders, those with IBS reported bloating/distension by pictograms the most (93.8%) and those with functional diarrhea the least (71.4%). CONCLUSIONS & INFERENCES: Pictograms are more effective than VDs for assessing the presence of bloating/distension in Spanish Mexico. Therefore, they should be used to study these symptoms in epidemiological research.

Disautonomía gastrointestinal como manifestación de mielitis transversa: Reporte de caso

La mielitis transversa, de origen inflamatorio, es una afectación rara de la médula espinal que afecta a uno o varios niveles. La etiología incluye esclerosis múltiple, causas infecciosas o trastornos del espectro de la neuromielitis óptica. Se presenta de forma aguda, con síntomas motores, sensoriales y/o disautonómicos como los gastrointestinales y urinarios. El diagnóstico se basa en la sintomatología, evolución y se confirma por punción lumbar, resonancia magnética nuclear y analítica sanguínea completa. Se presenta el caso clínico de una paciente con mielitis transversa, que debutó con sintomatología gastrointestinal, síntomas motores y confirmación diagnóstica con resonancia magnética nuclear.

Inflammatory transverse myelitis is a rare condition that affects one or more levels of the spinal cord. Its etiology includes multiple sclerosis, infectious causes, or disorders within the spectrum of neuromyelitis optica. It presents acutely with motor, sensory, and/or dysautonomic symptoms, such as those related to the gastrointestinal and urinary systems. Diagnosis is based on symptomatology, evolution, and is confirmed by lumbar puncture, magnetic resonance imaging, and complete blood analysis. We present a clinical case of a patient with transverse myelitis who presented with gastrointestinal symptoms, motor symptoms, and was diagnosed with magnetic resonance imaging.

Calidad de vida con y sin cirugía conservadora de esfínteres por cáncer de recto

Introducción: El cáncer colorrectal (CCR) es el tercer cáncer más frecuente y la segunda causa principal de muerte a nivel mundial con una incidencia 10,2%. El tratamiento del CCR ha cambiado durante los últimos 25 años. Se utilizan dos manejos quirúrgicos: la resección abdominoperineal (RAP) y la resección anterior baja (RAB) y la ultra baja (RAUB). La tasa de recidiva y la calidad de vida son similares. Objetivo: Comparar la calidad de vida de los pacientes con cáncer de recto tratados con resección abdominoperineal vs resecciones conservadoras de esfínteres: anterior baja y ultra baja en la UMAE Puebla. Métodos: Se realizó un estudio comparativo, observacional, transversal en pacientes con CCR atendidos durante 2015-2019 en un hospital de 3er nivel en Puebla. Se formaron dos grupos: los manejados con RAP y los manejados con RAB/RAUB. Se aplicó la escala EORT QLQ CR-29 y EuroQol. Se aplicó estadística descriptiva y U de Man-Whitney para comparaciones. Resultados: Se reclutaron 26 pacientes, 18 manejados con RAP y 8 con RAB/RAUB. Se registró una CV media en el grupo RAP de 73,72 (DE 16,92, mínimo 31,46, máximo 95,09) y en el grupo RAB/RAUB de 56,22 (DE 6,29, mínimo 47,51, máximo 68,96), con un valor de p=0,005. Conclusiones: No hay diferencia significativa en la calidad de vida de los pacientes con CCR operados por RAP, RAB y RAUB (abordaje no conservador y conservador).

Introduction: Colorectal cancer (CRC) is the third most common cancer and the second leading cause of death worldwide, with an incidence of 10.2%. The treatment of CRC has evolved over the past 25 years. Two surgical procedures are used: abdominoperineal resection (APR) and low anterior resection (LAR) and ultra-low anterior resection (ULAR). The recurrence rate and quality of life are similar between these approaches. Objective: To compare the quality of life of rectal cancer patients treated with abdominoperineal resection versus conservative sphincter-preserving surgeries: low anterior resection (LAR) and ultra-low anterior resection (ULAR) at UMAE of Puebla. Methods: A comparative, observational, cross-sectional study was conducted on CRC patients treated between 2015 and 2019 at a tertiary-level hospital in Puebla. Two groups were formed: those managed with APR and those managed with LAR/ULAR. The EORTC QLQ-CR29 scale and EuroQol were applied. Descriptive statistics and the Mann-Whitney U test were used for comparisons. Results: A total of 26 patients were recruited, 18 with APR and 8 with LAR/ULAR. The mean quality of life score in the APR group was 73.72 (SD 16.92, minimum 31.46, maximum 95.09), and in the LAR/ULAR group was 56.22 (SD 6.29, minimum 47.51, maximum 68.96), with a p-value of 0.005. Conclusions: There is no significant difference in the quality of life of CRC patients operated with APR, LAR, and ULAR (non-conservative and conservative approaches).

Gut-joint axis: Gut dysbiosis can contribute to the onset of rheumatoid arthritis via multiple pathways.

Rheumatoid Arthritis (RA) is an autoimmune disease characterized by loss of immune tolerance and chronic inflammation. It is pathogenesis complex and includes interaction between genetic and environmental factors. Current evidence supports the hypothesis that gut dysbiosis may play the role of environmental triggers of arthritis in animals and humans. Progress in the understanding of the gut microbiome and RA. has been remarkable in the last decade. In vitro and in vivo experiments revealed that gut dysbiosis could shape the immune system and cause persistent immune inflammatory responses. Furthermore, gut dysbiosis could induce alterations in intestinal permeability, which have been found to predate arthritis onset. In contrast, metabolites derived from the intestinal microbiota have an immunomodulatory and anti-inflammatory effect. However, the precise underlying mechanisms by which gut dysbiosis induces the development of arthritis remain elusive. This review aimed to highlight the mechanisms by which gut dysbiosis could contribute to the pathogenesis of RA. The overall data showed that gut dysbiosis could contribute to RA pathogenesis by multiple pathways, including alterations in gut barrier function, molecular mimicry, gut dysbiosis influences the activation and the differentiation of innate and acquired immune cells, cross-talk between gut microbiota-derived metabolites and immune cells, and alterations in the microenvironment. The relative weight of each of these mechanisms in RA pathogenesis remains uncertain. Recent studies showed a substantial role for gut microbiota-derived metabolites pathway, especially butyrate, in the RA pathogenesis.

Análisis del coste directo de la atención médica y quirúrgica del cáncer de mama. Estudio comparativo entre etapas temprana y tardía en tercer nivel de atención.

BACKGROUND: Management of breast cancer is increased by late diagnoses. OBJECTIVE: To analyse direct costs of breast cancer in early and advanced stage in a third level medical facility at Mexican Social Security Institute. METHOD: Observational study, direct costs of care in breast cancer in initial and advanced clinical stages are compared. Variables analysed were laboratory and diagnostic imaging studies, drugs, as well as hospitalization costs. The evaluated period included from the first care to the completion of the treatment. Costs were determined according to the table of Unit Costs by Level of Medical Care for the year 2019 of the Mexican Social Security Institute. Student's t test was used to determinate differences between groups, as well as descriptive statistics. RESULTS: The advanced stage compared to the initial stage, causes a greater number of laboratory-cabinet studies, surgeries, day/bed and interconsultations. The average cost of breast cancer care per patient is $99,280.36 (US$5,230.78) and $148,023.60 (US$7,789.92) for the initial and advanced stages, respectively (p = 0.024). CONCLUSIONS: Cost of medical attention in the initial stage is lower than that of the advanced stage.

ANTECEDENTES: Los diagnósticos tardíos elevan los costes de atención del cáncer de mama. OBJETIVO: Analizar los costes directos de la atención del cáncer de mama en etapa temprana y avanzada en el tercer nivel de atención en el Instituto Mexicano del Seguro Social (IMSS). MÉTODO: Estudio observacional que compara los costes directos de atención en cáncer de mama en estadios clínicos inicial y avanzado. Los datos analizados fueron estudios de laboratorio, gabinete, tratamiento y hospitalización. El tiempo evaluado incluyó desde la primera atención hasta la finalización del primer tratamiento. Se determinaron los costes de acuerdo con la tabla de Costes Unitarios por Nivel de Atención Médica para el año 2019 del IMSS. Se utilizó la prueba t de Student para diferencias entre grupos, así como estadística descriptiva. RESULTADOS: El estadio avanzado, comparado con el estadio inicial, ocasiona un número mayor de estudios de laboratorio-gabinete, cirugías, día/cama e interconsultas. El coste promedio de la atención del cáncer de mama por paciente es $99,280,36 (US$5,230.78) y $148,023.60 (US$7,789.92) para los estadios inicial y avanzado, respectivamente (p = 0.024). CONCLUSIONES: El coste de la atención médica del estadio inicial es menor que el del estadio avanzado.

Identification of Human Papillomavirus genotypes in juvenile laryngeal papillomatosis. Three-year experience in a concentration hospital in Puebla, Mexico / Identificación de genotipos de Virus del Papiloma Humano en papilomatosis laríngea juvenil. Experiencia de 3 años en un hospital de concentración en Puebla, México

Background: Juvenile laryngeal papillomatosis (JLP) is a chronic benign disease from viral etiology, whose clinical course can be aggressive. In Mexico, the Human Papillomavirus (HPV) genotypes that cause this disease have been poorly studied. Objective: To identify the HPV genotypes in patients with JLP in a reference Hospital in Puebla, Mexico. Mehods: A retrospective descriptive study was performed in patients with JLP attended in a 3rd level care of the Instituto Mexicano del Seguro Social in Puebla, México, from 2018 to 2021. Medical records were revised. In all patients, HPV identification was performed by polymerase chain reaction for genomes 6, 11, 16 and 18 using specific oligonucleotides. Descriptive statistics were applied. Results: 9 patients were included, 56% women, mean age 9.5 ±5.7 years; 7 patients were HPV-11 positive and 2 HPV-6. The mean age at diagnosis was 2.35 ±1.77 years, with an average of 12 ±11.56 surgical procedures; 5 patients were tracheostomy carriers, 4 had genotype 11; 8 patients were born vaginally, but no patient had maternal genital condylomatous lesions. In the patient born by cesarean section, transmission due to sexual abuse was documented. Conclusions: The most frequent genotypes in patients with JLP in the south-central region of Mexico are HPV-6 and HPV-11, the latter one is predominating.

Introducción: La papilomatosis laríngea juvenil (PLJ) es una enfermedad benigna crónica de etiología viral, que tiende a tomar un curso clínico agresivo. En México se han estudiado pobremente los genotipos del Virus del Papiloma Humano (VPH) que causan la enfermedad. Objetivo: Identificar los genotipos del VPH en los pacientes con PLJ en un hospital de concentración en Puebla, México. Métodos: Se realizó un estudio descriptivo y retrospectivo a los pacientes con papilomatosis laríngea juvenil atendidos en un hospital de 3er nivel de atención del Instituto Mexicano del Seguro Social en Puebla, México, en el periodo 2018-2021. Se realizó revisión de expedientes clínicos. En todos los pacientes se identificó el VPH por reacción en cadena de polimerasa para los genomas 6, 11, 16 y 18 utilizando oligonulceótidos específicos. Se aplicó estadística descriptiva. Resultados: Se incluyeron 9 pacientes, 56% mujeres, edad media 9.5 ±5.7 años; 7 pacientes registraron positividad al VPH-11 y 2 al VPH-6. La edad media al diagnóstico fue de 2.35 ±1.77 años, con promedio de procedimientos quirúrgicos de 12 ±11.56; de los 5 pacientes portadores de traqueostomía, 4 fueron positivos a VPH-11; 8 pacientes nacieron por vía vaginal, sin embargo, en ningún caso se reportaron lesiones condilomatosas maternas. En el paciente nacido por cesárea, se documentó transmisión por abuso sexual. Conclusiones: Los genotipos más frecuentes en pacientes con PLJ en la región centro-sur de México son VPH-6 y VPH-11, predominando este último.

[Security protocols adapted to COVID-19 in elective surgery thru 2021]. / Protocolos de seguridad adaptados a COVID-19 en cirugía electiva durante 2021.

Background: Medical personnel are among the populations with the most infections and morbidity and mortality during the COVID-19 pandemic worldwide. Objective: To evaluate patient and health personnel safety in anesthetic procedures of elective surgeries during COVID-19 pandemic in a 3rd level care Hospital in Puebla, Mexico. Material and methods: Descriptive, prospective, analytical study in a 3rd level care unit of the Mexican Social Security Institute in Puebla, Mexico. Elective surgeries from all shifts and any specialty, whose staff signed informed consent, were included. The modified surgical safety checklist for COVID 19, from the World Federation of Societies of Anesthesiologists, was applied. Results: 170 surgeries were evaluated, the predominant specialties were oncosurgery (39.41%), urology (25.29%) and general surgery (14.71%). The most used anesthetic technique was general anesthesia (47.05%); 10.12% accomplished safe intubation/extubation protocols, presence of essential personnel in 6.34%. The use of personal protective equipment decreased during the stages of the pandemic, the use of face masks by medical personnel/patients is the most frequent (100%). Conclusions: Security measures have decreased. Adequate security protocols must be continued to avoid new infections. Basic protection measures, the use of personal protective equipment and other protection strategies must persist.

Introducción: el personal médico ha sido de las poblaciones con mayor número de contagios y morbimortalidad durante la pandemia de COVID-19 en todo el mundo. Objetivo: evaluar la seguridad del paciente y del personal de salud en procedimientos anestésicos de cirugías electivas en tiempos de COVID-19 en un hospital de tercer nivel de atención en Puebla, México. Material y métodos: estudio descriptivo, prospectivo, analítico, en una unidad de tercer nivel de atención del Instituto Mexicano del Seguro Social en Puebla, México. Se incluyeron cirugías electivas de todos los turnos y de cualquier especialidad, cuyo personal firmó consentimiento informado. Se aplicó la lista de verificación de seguridad quirúrgica modificada para COVID-19 de la Federación Mundial de Sociedades de Anestesiólogos. Resultados: se evaluaron 170 cirugías, las especialidades predominantes fueron Oncocirugía (39.41%), Urología (25.29%) y Cirugía general (14.71%). La técnica anestésica más utilizada fue la anestesia general (47.05%); el 10.12% cumplió con los protocolos de intubación/extubación segura, mientras que la presencia de personal esencial se cumplió en el 6.34%. El uso de equipo de protección personal disminuyó durante las etapas de la pandemia, el uso de cubrebocas por personal médico/pacientes es el más frecuente (100%). Conclusiones: las medidas de seguridad han disminuido. Se debe continuar con los protocolos de seguridad adecuados para evitar contagios nuevos. Las medidas de protección básicas, el uso de equipo de protección personal y demás estrategias de protección deben persistir.