Boletín médico del Hospital Infantil de México最新文献

{"title":"Factors associated to motor development in Down syndrome patients.","authors":"Alan A Pérez-Arzola, Israel E Crisanto-López, Yazmin Hernández-Castañeda, Áurea Vera-Loaiza, Wilbert Salazar-Bonilla, María J Muñoz-Pérez, Daniela Júarez-Melchor","doi":"10.24875/BMHIM.25000020","DOIUrl":"10.24875/BMHIM.25000020","url":null,"abstract":"<p><strong>Introducción: </strong>El síndrome de Down (SD) se caracteriza por dismorfias, retraso psicomotor y afectaciones sistémicas. Su prevalencia es de 1:700 nacidos vivos. Aproximadamente el 80% de los recién nacidos con SD presentan hipotonía, que es la principal causa de retraso motor grueso. El desarrollo motor se considera atípico, dado que se retrasa en comparación con niños de la población general. El objetivo de este trabajo es describir los factores asociados al desarrollo motor en pacientes con SD.</p><p><strong>Métodos: </strong>Se realizó un estudio observacional, analítico, transversal y ambispectivo en el Servicio de Genética Médica del Hospital General de Zona No. 20, Puebla. Se analizaron: edad, sexo, mecanismo citogenético, prematurez, lactancia materna, nivel socioeconómico, cardiopatía congénita, función tiroidea y rehabilitación para el desarrollo motor. Se realizó análisis estadístico descriptivo e inferencial (chi cuadrada) para identificar las variables asociadas al desarrollo motor de pacientes con SD.</p><p><strong>Resultados: </strong>Se analizaron 40 pacientes con SD, 22 (55%) de sexo masculino y 18 (45%) femenino; la mediana de edad fue 32.5 meses; 22 individuos (55%) presentaron trisomía 21 libre y 18 (45%) en mosaico; en 37 individuos (92.5%) se retrasó el desarrollo motor y solo 3 (7.5%) alcanzaron los hitos. Se encontró una diferencia estadísticamente significativa entre el presentar o no hipotiroidismo y el logro de los hitos (p = 0.046).</p><p><strong>Conclusiones: </strong>En este estudio se comprobó que los pacientes con SD presentan retraso del desarrollo motor y que existe una diferencia estadísticamente significativa entre el hipotiroidismo y los hitos motores, destacando que el hipotiroidismo no limitó el desarrollo motor en los pacientes con SD que alcanzaron sus hitos motores.</p><p><strong>Background: </strong>Down syndrome (DS) is characterized by dysmorphia, psychomotor delay, and systemic conditions, with a prevalence of 1:700 live births. Around 80% of newborns with DS exhibit hypotonia, which is the main cause of gross motor delay. In these children, motor milestones are considered atypical because it is delayed compared to children in the general population. The aim is to describe factors associated to motor development in patients with DS.</p><p><strong>Methods: </strong>An observational, analytical, cross-sectional, and ambispective study was conducted at the Medical Genetics Service of the General Hospital of Zone No. 20, Puebla. Age, sex, cytogenetic mechanism, prematurity, breastfeeding, socioeconomic level, congenital heart disease, thyroid function, and rehabilitation for motor development were analyzed. Descriptive and inferential statistical analysis was performed with the chi square test to identify variables associated with the motor development of patients with DS.</p><p><strong>Results: </strong>Forty patients were analyzed, 22 (55%) male and 18 (45%) female, a median age of 32.5 ","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 2","pages":"94-101"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148013428","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Experience of a third-level hospital teaching the laparoscopic percutaneous extraperitoneal closure technique to residents for pediatric inguinal hernia repair.","authors":"Ricardo M Ordorica-Flores, Hector M Ibarvo-Gracia, Cristian Zalles-Vidal, Salvador Montoya-Alvarez, Arturo Minor-Martínez, Fernando Pérez-Escamirosa, Jaime Nieto-Zermeño","doi":"10.24875/BMHIM.25000034","DOIUrl":"https://doi.org/10.24875/BMHIM.25000034","url":null,"abstract":"<p><strong>Background: </strong>This study aims to present the experience of a third-level hospital teaching inguinal hernia repair through the laparoscopic percutaneous extraperitoneal closure (LPEC) method to pediatric surgery residents.</p><p><strong>Methods: </strong>This study was performed by the Department of Pediatric Surgery of a third-level hospital of clinical care. Eleven residents received pediatric inguinal hernia repair training based on the LPEC method using a Tuohy needle. The mean time of four metrics was used to measure trainees' performance during the inguinal hernia repair procedure through the LPEC method, alongside approval of the procedure by an expert surgeon. Operative times between the first and last surgeries were evaluated using the paired t-student test.</p><p><strong>Results: </strong>A total of 50 repairs were performed, including 45 unilateral repairs (31 right and 14 left hernias) and 5 bilateral repairs. The follow-up period for all patients was 12 months with no significant complications, no recurrence, and without post-operative hydrocele. The results showed statistically significant differences for umbilical trocar insertion time (p = 0.018), inguinal hernia repair time (p < 0.001), umbilical trocar site closure time (p = 0.029), and the total surgical procedure time (p < 0.001) metrics. The mean time in the last surgical repair procedure was 19.7 ± 5.9 min.</p><p><strong>Conclusions: </strong>All pediatric surgery trainees adequately acquired the skills to perform the inguinal hernia repair through the LPEC method. This study provides our experience in implementing this technique in a third-level hospital.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 4","pages":"232-239"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148812058","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Interpretation of child development delay studies in referral services: methodological considerations.","authors":"Jerson R Guitton-Guerrero","doi":"10.24875/BMHIM.25000137","DOIUrl":"https://doi.org/10.24875/BMHIM.25000137","url":null,"abstract":"","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 2","pages":"132-133"},"PeriodicalIF":0.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148013386","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Why is precision pediatric diagnostics is leading the global conversation?","authors":"Mulavagili Vijayasimha, Rajesh P Jayaswal, Radhika Magotra","doi":"10.24875/BMHIM.25000114","DOIUrl":"https://doi.org/10.24875/BMHIM.25000114","url":null,"abstract":"","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 2","pages":"130-131"},"PeriodicalIF":0.5,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148013461","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Chronic pancytopenia, severe splenomegaly, and splenectomy: the importance of histopathology cases of suspected of pediatric visceral leishmaniasis.","authors":"Fabricio Sevilla-Acosta, Kathia Valverde-Muñoz, Tatiana Moya-Moya, Ana C Valerio-Aguilar, Rolando Ulloa-Gutierrez","doi":"10.24875/BMHIM.25000017","DOIUrl":"10.24875/BMHIM.25000017","url":null,"abstract":"<p><strong>Background: </strong>In Latin America, the incidence of visceral leishmaniasis (VL) in children is unknown. In addition, there are very few pediatric reports from Central America and the Caribbean. In Costa Rica, the first pediatric case was published in 1999, although the patient was diagnosed in 1995. Since then, no other cases have been published.</p><p><strong>Clinical case: </strong>We describe the case of a 2-year-old female who presented with prolonged fever, pancytopenia, and massive splenomegaly, and who was diagnosed with VL incidentally after splenectomy. She was successfully treated with amphotericin B for 14 days. The evolution has been favorable, with no sequelae at 5 years follow-up. These clinical presentations are very uncommon.</p><p><strong>Conclusions: </strong>Even in non-endemic countries, VL should be considered as a cause of massive splenomegaly in tropical countries, and should be considered within the differential diagnosis of patients presenting with fever, splenomegaly, pancytopenia, hepatomegaly, and/or lymphadenopathy.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 2","pages":"120-124"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148013447","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Associated comorbidities in pediatric patients with alopecia areata.","authors":"Adrián Martínez-Gayosso, María T García-Romero","doi":"10.24875/BMHIM.25000068","DOIUrl":"10.24875/BMHIM.25000068","url":null,"abstract":"<p><strong>Background: </strong>Alopecia areata (AA) in children is associated with comorbidities such as atopy, vitiligo, psoriasis, and thyroid disease, but reported data are lacking. Our objective is to estimate the frequency of comorbidities present in children with AA, as well as their relationship with age of onset, specific subtype, and treatment efficacy.</p><p><strong>Methods: </strong>We retrospectively reviewed clinical records of patients treated at the National Institute of Pediatrics between 2008 and 2018. Patients were categorized into subgroups: localized versus non-localized AA, onset in preschool age (< 7 years) versus school age (≥ 7 years), and treatment response as good (≥ 50% regrowth) versus suboptimal (< 50%). Comorbidities were classified as autoimmune, inflammatory/reactive, congenital, psychological, infectious, and neoplastic.</p><p><strong>Results: </strong>We included 105 patients diagnosed with AA. The most prevalent subtype was localized in 78 (74.3%) patients. Ninety-five (90%) patients had comorbidities, with allergic rhinitis (n = 12, 11.4%) and atopic dermatitis (n = 11, 10.4%) being the most frequent. Autoimmune comorbidities occurred in 16 patients (15.2%), with autoimmune thyroid disease being the most prevalent in 8 patients (7.6%). Localized AA was associated with better outcomes, shorter duration, fewer relapses, and fewer treatments, as well as inflammatory and congenital diseases.</p><p><strong>Conclusions: </strong>The association of AA with atopic, autoimmune, and psychiatric comorbidities is consistent with literature reports. Our findings support intentionally seeking associated diseases in pediatric patients with AA to identify them and treat them timely.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 1","pages":"45-50"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147302329","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Congenital knee dislocation: conservative management of a series of cases.","authors":"Lucía Rodríguez-Noriega-Béjar, Cristina Martínez-García, Carmen Ornia-Fernández, Andrea Cabeza-Antuña, Mara Rodríguez-Ortiz, Gonzalo Solís-Sánchez","doi":"10.24875/BMHIM.25000092","DOIUrl":"10.24875/BMHIM.25000092","url":null,"abstract":"<p><strong>Introducción: </strong>La luxación congénita de rodilla (LCR) es una anomalía musculoesquelética poco frecuente, caracterizada por hiperextensión de la rodilla al nacimiento. Sus posibles causas incluyen factores mecánicos, como el oligoamnios o la presentación podálica, así como alteraciones genéticas o neuromusculares. El objetivo fue describir la incidencia, características clínicas, tratamiento y resultados de los casos de LCR diagnosticados en una unidad neonatal del norte de España durante un periodo de 20 años.</p><p><strong>Métodos: </strong>Se llevó a cabo un estudio observacional, descriptivo y retrospectivo de casos de LCR diagnosticados entre 2005 y 2024 (43,500 nacimientos). Se analizaron variables demográficas, obstétricas, clínicas, terapéuticas y de complicaciones, obtenidas de los historiales clínicos e imágenes diagnósticas.</p><p><strong>Resultados: </strong>Se identificaron ocho pacientes (11 rodillas afectadas), con una incidencia del 0.02%. La edad gestacional media fue de 37 semanas y el peso medio al nacer de 2,435 gramos. El 75% de los casos correspondieron a niñas, con afectación bilateral en el 37.5% y predominio de la rodilla izquierda. Se observó oligoamnios en el 25% y presentación podálica en el 37.5% de los casos. La displasia del desarrollo de cadera fue la comorbilidad más frecuente (37.5%). Todos los pacientes fueron tratados de forma conservadora mediante yesos seriados, con resultados favorables en seis de ellos. Un caso requirió tratamiento ortésico prolongado por malformaciones complejas y otro presentó una leve discrepancia en la longitud de las extremidades.</p><p><strong>Conclusiones: </strong>El diagnóstico precoz, habitualmente mediante exploración física, es esencial para un pronóstico favorable. El tratamiento conservador resulta eficaz en la mayoría de los casos, reservándose la cirugía para situaciones refractarias. La incidencia observada fue superior a la descrita clásicamente, lo que podría reflejar variaciones metodológicas o poblacionales. La evaluación integral de los pacientes es fundamental para identificar anomalías asociadas y prevenir complicaciones a largo plazo.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 1","pages":"51-56"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147302361","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Angelman syndrome with atypical presentation mimicking cerebral palsy: diagnosis and treatment challenges.","authors":"Natã N J Graça, Márcio L Duarte, Márcia Fernández-Cascardi","doi":"10.24875/BMHIM.25000019","DOIUrl":"10.24875/BMHIM.25000019","url":null,"abstract":"<p><strong>Background: </strong>Angelman syndrome (AS) is a rare genetic disorder caused by the lack of expression of the UBE3A gene, inherited maternally, and is associated with an abnormal chromosome 15q11-q13. Affects 1 in 12,000-20,000 individuals and is more commonly diagnosed in childhood, although some cases are missed in adulthood. This condition, which affects both genders equally, often is undiagnosed due to errors or underreporting. This case involves a patient with AS, initially misdiagnosed as cerebral palsy, presenting with severe developmental delay, autistic behaviors, hypotonia, and epilepsy.</p><p><strong>Clinical case: </strong>We describe the case of a 3-year and 10-month-old male patient with a family history of autism spectrum disorder and attention deficit hyperactivity presented with motor delay, severe hypotonia, brachycephaly, absence of trunk control, difficult-to-control epilepsy, and severe developmental delay (unable to walk or speak). Initial observations revealed he could not sit or crawl and had difficulty swallowing. He was prescribed risperidone and had follow-ups for ongoing issues. In 2022, he experienced a tonic-clonic seizure and was diagnosed with chronic non-progressive encephalopathy and epilepsy, leading to valproic acid treatment. Subsequent seizures led to adjustments in his medication regimen, including adding clonazepam, phenobarbital, and levetiracetam. Genetic testing confirmed a deletion in the Prader-Willi/AS critical region on chromosome 15. The patient is currently stable.</p><p><strong>Conclusions: </strong>AS is characterized by developmental delays, speech impairment, ataxia, and seizures, along with characteristic behaviors such as inappropriate laughter. The comorbidities associated with AS, such as seizures and ataxia, significantly increase the risk of injuries and accidents, leading to higher morbidity and mortality in patients.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 2","pages":"125-129"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148013451","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Thyroid dysfunction in Mexican pediatric patients with vitiligo and its association with clinical characteristics and outcomes.","authors":"Rodrigo Lomelí-Valdez, Martín E Flores-Munguía, María T García-Romero","doi":"10.24875/BMHIM.25000119","DOIUrl":"https://doi.org/10.24875/BMHIM.25000119","url":null,"abstract":"<p><strong>Background: </strong>Vitiligo is an autoimmune, polygenic, and multifactorial disorder and the leading cause of acquired depigmentation worldwide. More than 50% of cases begin before 18 years of age, significantly impacting quality of life. It has been associated with other autoimmune diseases, particularly thyroid dysfunction; however, studies in the pediatric population are limited. This study analyzed the frequency of thyroid abnormalities and their relationship with clinical characteristics in Mexican pediatric patients with vitiligo.</p><p><strong>Methods: </strong>A retrospective, cross-sectional, analytic study was conducted in patients <18 years of age with vitiligo treated at the National Institute of Pediatrics (2007-2017). Clinical and demographic data, as well as thyroid function tests and thyroid autoantibodies, were collected. Differences between groups were analyzed using the Chi-square test or Fisher's exact test.</p><p><strong>Results: </strong>A total of 141 patients were included (49% female), with a mean age at onset of 6.3 ± 3.7 years. Most patients (120, 85%) had non-segmental vitiligo, and 95 (48%) had disseminated disease. Of the 88 patients (62%) who underwent thyroid testing, 30 (34%) had abnormalities, predominantly subclinical hypothyroidism in 18 (20.4%). Thyroid autoantibodies were assessed in 66 patients (46.8%) and were positive in 18 cases (27.3%). Good response (> 50% repigmentation) was achieved in 96 (68%) patients. We found a significant association between non-segmental vitiligo with disseminated disease (p < 0.001), with family history of autoimmunity (p = 0.01), and with thyroid autoantibody positivity (p < 0.001).</p><p><strong>Conclusions: </strong>This study demonstrated a higher frequency than reported of thyroid dysfunction and positive thyroid autoantibodies in pediatric patients with vitiligo. Although this could represent bias, thyroid and autoantibody screening is recommended at diagnosis in these patients, along with periodic follow-up, to detect early dysfunction and optimize management.</p>","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 3","pages":"188-194"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148547590","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Clinical aptitude: two educational strategies for its development in cardiology residents. Quasi-experimental design.","authors":"Félix A Leyva-González, Gress M Gómez-Arteaga, Alberto Lifshitz-Guinzberg, Francisco J F Gómez-Clavelina, Lilia Degollado-Bardales, Eduardo Almeida-Gutiérrez, Karina Lupercio-Mora, Juan Verdejo-París, Daniel Manzur-Sandoval, Enrique Gómez-Álvarez, Julieta D Morales-Portano, Félix A Leyva-Salas, Martha A Gómez-Arteaga, Rosalba I Leyva-Salas, Víctor A Ayala-Angulo","doi":"10.24875/BMHIM.25000043","DOIUrl":"10.24875/BMHIM.25000043","url":null,"abstract":"&lt;p&gt;&lt;strong&gt;Introducción: &lt;/strong&gt;Esta indagación en nuestro medio representa el primer trabajo multicéntrico en cardiología, mediante el que se pretende determinar los efectos de dos estrategias educativas: participativa vs. tradicional, con respecto al desarrollo de la aptitud clínica en residentes de cardiología de tres sedes académicas.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Métodos: &lt;/strong&gt;Diseño cuasiexperimental, multicéntrico. Se estudió toda la matrícula. Se construyó un instrumento que evaluó la variable aptitud clínica mediante ocho indicadores y 170 ítems; la validez conceptual/de contenido y confiabilidad se valoró por cinco cardiólogos con experiencia docente e investigación educativa. Estrategia educativa participativa: cada sesión se desarrolló en tres fases con guías de discusión estructuradas. Estrategia educativa tradicional: cada sesión se efectúo en dos fases. Las sesiones se realizaron una vez por semana (2 horas). Duración total: 20 sesiones. El instrumento de medida se aplicó en la 1.ª y 20.ª sesión.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Resultados: &lt;/strong&gt;Por año de residencia, en la calificación global de los indicadores se estimaron diferencias estadísticas entre medición inicial y final, resultando significativas en las tres sedes. Por indicador se realizó este mismo análisis y el resultado fue el mismo.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusiones: &lt;/strong&gt;Una estrategia educativa participativa vs. estrategia tradicional tiene mayores efectos en el desarrollo de la aptitud clínica en residentes de cardiología en la sede experimental.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Background: &lt;/strong&gt;This investigation represents the first multicenter study in cardiology in our setting, through which it is intended to determine the effects of two educational strategies: participatory vs. traditional, with respect to the development of clinical aptitude in cardiology residents at three academic sites.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Methods: &lt;/strong&gt;Quasi-experimental, multicenter design. The entire enrollment was studied. An instrument was built that assessed the variable “clinical aptitude” by means of eight indicators and 170 items; conceptual/content validity and reliability were assessed by five cardiologists with teaching and educational research experience. Participatory educational strategy: each session was developed in three phases with structured discussion guides. Traditional educational strategy: each session was conducted in two phases. Sessions were held once a week (2 hours). Total duration: 20 sessions. The measurement instrument was applied in the 1&lt;sup&gt;st&lt;/sup&gt; and 20&lt;sup&gt;th&lt;/sup&gt; session.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Results: &lt;/strong&gt;By year of residency, statistical differences were estimated in the overall rating of the indicators between the initial and final measurements, were found to be significant at all three sites. By indicator, the same analysis was performed and the result was the same.&lt;/p&gt;&lt;p&gt;&lt;strong&gt;Conclusions: &lt;/strong&gt;A participatory vs. traditional educational strategy has greater effects on the development","PeriodicalId":9103,"journal":{"name":"Boletín médico del Hospital Infantil de México","volume":"83 4","pages":"240-251"},"PeriodicalIF":0.7,"publicationDate":"2026-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"148811998","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}