Repositorio Institucional
Sistema de Bibliotecas Universidad Finis Terrae
El Repositorio Institucional de la Universidad FinisTerrae, es gestionado por el Sistema de Bibliotecas y tiene por objetivo permitir el acceso libre a la producción académica e institucional de la Universidad, aumentando la visibilidad de sus contenidos y garantizando su conservación.
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Self-study colaborativo: etapas, condiciones de la amistad crítica y aprendizajes sobre la formación
(Organización de Estados Iberoamericanos (OEI), 2020-01-17) Nocetti de la Barra, Alejandra; Orrego Lepe, Claudia; Silva-Peña, Ilich; Santibáñez Gómez, David; Flores González, Marianella; Gutiérrez Villegas, Marlene; Moreno Tello, Pablo; González Sáez, Romina
En el presente artículo abordamos el trabajo realizado por un grupo de académicos utilizando la metodología de investigación denominada Self-Study. El fin investigativo fue abordar las etapas de este método reflexivo y crítico sobre el ‘sí mismo’, las condiciones de la amistad crítica y el aprendizaje en la formación de formadores. Examinamos la enseñanza de la reflexión en actividades curriculares de índole práctica en dos universidades, constituyendo trabajos en parejas. Un/a integrante desarrollaba el Self-Study, mientras otro/a ejercía el rol de amigo/a crítico/a. Analizamos correos electrónicos, notas de diarios, conversaciones grabadas, filmaciones de clases y discusiones. Como resultado de este proceso, determinamos que desde el punto de vista metodológico hubo distinciones en las etapas del desarrollo del Self-Study, así como consideraciones de importancia en la construcción de la amistad crítica para el desarrollo de este tipo de investigación. Por último, discutimos los hallazgos en torno a dos tipos de aprendizaje consumados, a saber, sobre los formadores de formadores y los estudiantes que de modo indirecto acompañaron el proceso de cambio de los docentes en estudio.
Clinical implications of aberrant anatomy of the common hepatic duct in liver surgery: a systematic review and meta-analysis
(Springer, 2024-09-27) Valenzuela Fuenzalida, Juan José; Avalos Díaz, Constanza; Droguett Utreras, Antonia; Guerra Loyola, Javier; Nova Baeza, Pablo; Orellana-Donoso, Mathias; Suazo Santibañez, Alejandra; Oyanedel Amaro, Gustavo; Sanchis Gimeno, Juan; Bruna Mejias, Alejandro; Gkionoul Nteli, Chatzioglou
Introduction: Knowledge of anatomical variants that affect the hepatic duct (HD) are of particular clinical relevance during hepatobiliary surgical procedures. More specifically, the aberrant anatomy of the common HD is the most common anatomical variation affecting the biliary tree. Below, we describe different classifications of anatomical variants that affect this canal. According to Huang's classification, variations are determined depending on the insertion of the right posterior hepatic duct (RPHD).
Materials and methods: Medline, Scopus, Web of Science, Google Scholar, CINAHL, and LILACS databases were investigated until January 2024. The methodological quality was assessed with an anatomical studies assurance tool (AQUA). Pooled prevalence was estimated using a random effects model. For the subgroup analysis, Student's T-test was used.
Results: The prevalence rate of aberrant hepatic duct (AHD) was 15% (confidence interval [CI] of 7-22%). The first subgroup had cadavers and images. For the cadavers, the prevalence was 15.83% (CI: 11.22-18.3%), while the images had a prevalence of 22.06% (CI: 18.12-25.33%). This subgroup analysis showed no statistically significant difference between these groups (p = 0.127). The second subgroup comprised the continents where the included studies were from. In this subgroup, no statistically significant differences were found (p = 0.613). Finally, regarding the right or left laterality of the HD variant, there were no statistically significant differences (p = 0.089).
Conclusion: A AHD corresponds to a finding that can occur in a significant percentage of our society, which could be an accidental discovery during surgeries or present asymptomatically throughout life and be a cadaveric discovery later. We believe it is important for surgeons to have prior knowledge of the possible variants of HD to prevent possible complications during and after surgery.
Hepatic hilum variations and their clinical considerations in the liver: a systematic review and meta-analysis
(MDPI, 2024-05-18) Valenzuela Fuenzalida, Juan José; Pena Santibañez, Fernanda; Vergara Salinas, Ayline; Meneses Caroca, Trinidad; Rojo Gonzalez, Javiera; Orellana-Donoso, Mathias; Nova Baeza, Pablo; Suazo Santibañez, Alejandra; Suazo Santibañez, Juan; Gutierrez Espinoza, Héctor
Background: The liver has a region called the hepatic hilum (HH) where structures enter and exit: anteriorly, the left and right hepatic ducts; posteriorly, the portal vein; and between these, the left and right hepatic arteries. The objective of this review is to know how variants in structures of the hepatic hilum are associated with clinical alterations of the liver. Methods: The databases Medline, Scopus, Web of Science, Google Scholar, CINAHL, and LILACS were researched until January 2024. The methodological quality was evaluated with an assurance tool for anatomical studies (AQUA). The pooled prevalence was estimated using a random effects model. Results: A total of six studies met the selection criteria established in this study for meta-analysis. The prevalence of hepatic hilus variants was 9% (CI = 5% to 13%), and the heterogeneity was 83%. The other studies were analyzed descriptively and with their respective clinical considerations in the presence of the variant, such as the high incidence of the Michels type III variant; among the portal vein variants, the type III variant of the Cheng classification stands out and in biliary anatomy, and the IIIa variant stands out according to the Choi classification. Conclusions: This review allowed us to know in detail the anatomical variants of HH; the structure with which the greatest care should be taken is the hepatic artery because of the probability of metastatic processes due to increased blood distribution in the hepatic lobules. Finally, we believe that new anatomical and clinical studies are needed to improve our knowledge of the relationship between HH variants and liver alterations or surgeries.
Partial agenesis of the pectoralis major and minor muscle: A cadaveric case report
(Wolters Kluwer Health, Inc., 2024-09-13) Bruna Mejias, Alejandro; Orellana-Donoso, Mathias; Nova Baeza, Pablo; Suazo Santibañez, Alejandra; Oyanedel Amaro, Gustavo; Valenzuela Fuenzalida, Juan José
Rationale: The pectoralis major and minor muscles, located in the anterior chest wall, are crucial for upper limb movements.
Patient concerns: Their nonsyndromic absence is rare but significant for surgical procedures involving the axillary and pectoral regions.
Diagnoses: Ultrasound can confirm the diagnosis and delimit the extent of the muscular abnormality, detect abnormalities of the costal cartilages, among others.
Interventions: This descriptive, cadaveric case report involves a formalin-fixed 57-year-old North American male, with no clinical or family history of similar conditions. The study was conducted at the Human Anatomy Laboratory of the School of Medicine of the universidad Finis Terrae in Santiago, Chile, in August 2022.
Outcomes: We present a cadaveric case of bilateral partial agenesis of the pectoralis muscles discovered during routine dissection. The pectoralis major muscle exhibited only the clavicular portion, with the sternocostal and abdominal portions absent and replaced by a thin layer of connective tissue bilaterally. The pectoralis minor muscle showed partial muscle fibers only in the most distal and inferior portions bilaterally.
Lessons: This case report is significant due to the rarity of this condition without accompanying anatomical variations. Understanding this variant is valuable for clinical situations involving the shoulder and thorax region, such as trauma to the proximal third of the humerus, clavicular region, suprascapular region, and anterior chest wall. It may complicate conservative and/or surgical treatments due to different functional and irrigation patterns in the area and is also important for educating future professionals.
Anatomical variants of the origin of the coronary arteries: a systematic review and meta-analysis of prevalence
(MDPI, 2024-06-24) Valenzuela Fuenzalida, Juan José; Becerra Rodriguez, Emelyn; Quivira Muñoz, Alonso; Baez Flores, Belén; Escalona Manzo , Catalina; Orellana-Donoso, Mathias; Nova Baeza, Pablo; Suazo Santibañez, Alejandra; Bruna Mejias, Alejandro; Sanchis Gimeno, Juan; Gutiérrez Espinoza, Héctor; Granite, Guinivere
Purpose: The most common anomaly is an anomalous left coronary artery originating from the pulmonary artery. These variants can be different and depend on the location as well as how they present themselves in their anatomical distribution and their symptomatological relationship. For these reasons, this review aims to identify the variants of the coronary artery and how they are associated with different clinical conditions.
Methods: The databases Medline, Scopus, Web of Science, Google Scholar, CINAHL, and LILACS were researched until January 2024. Two authors independently performed the search, study selection, and data extraction. Methodological quality was evaluated using an assurance tool for anatomical studies (AQUA). Pooled prevalence was estimated using a random effects model.
Results: A total of 39 studies met the established selection criteria. In this study, 21 articles with a total of 578,868 subjects were included in the meta-analysis. The coronary artery origin variant was 1% (CI = 0.8-1.2%). For this third sample, the funnel plot graph showed an important asymmetry, with a p-value of 0.162, which is directly associated with this asymmetry.
Conclusions: It is recommended that patients whose diagnosis was made incidentally and in the absence of symptoms undergo periodic controls to prevent future complications, including death. Finally, we believe that further studies could improve the anatomical, embryological, and physiological understanding of this variant in the heart.