Artículos de revistas

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https://repositorio.uc.cl/handle/11534/1156
Esta colección incluye artículos de revistas de profesores de la Pontificia Universidad Católica de Chile, publicados en revistas nacionales y extranjeras.

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    Profile of morphology teachers in chilean universities
    (2021) Farfán C., Emilio; Cárdenas, Julio; Espinoza Navarro, Omar; Lizana, Pablo A.; Pacheco, Juan; Salinas, Paulo; Riveros, Andrés; Villarroel, Mauricio
    University teaching in Chile has been influenced in recent decades by changes to the education system, which has increased universities and academic offerings and, therefore, the demand for new instructors. Teaching morphological sciences has not been exempt from these changes, with new instructors needed to fill the growing offerings of programs that include anatomy, embryology and histology. The aim was to understand the profile of the academics teaching morphology in Chile in 2020. A voluntary online survey was applied to 213 university morphology teachers, in which information was collected on professional and academic training, geographical distribution, gender, continuing academic education and employment situation. Overall, the results show that 65.9 % of instructors were men and 35.1 % women, and most (34.6 %) had between 5 and 10 years in morphology, and a master's degree was predominant (53.27 %). In the area of anatomy, 46 % of instructors were physiotherapists and 24.6 % dentists, whereas in the areas of histology and embryology, the group was diverse. In terms of employment, 49.06 % stated they worked full time, mainly in teaching .41.31 % of the instructors were concentrated in the Metropolitan Region. There was no association between gender and graduate training, maximum academic degree attained, type of workday or academic profile, but there was one by disciplinary area. The conclusion drawn is that morphology teachers in Chilean universities are part of a wide range of professionals dedicated to different disciplinary areas, with master's degree and/or specialization, located mainly in the Metropolitan Region. This multidisciplinary profile demonstrates the mainstreaming of morphology teaching in Chile.
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    Morphological study on the origin of the semitendinosus muscle in the long head of biceps femoris
    (2021) Farfán C., Emilio; Rojas, Santiago; Olivé Vilas, Ramon; Rodríguez Baeza, Alfonso
    Hamstring muscle injuries are the most prevalent among athletes who engage in sprinting activities. Their most frequent location is where the long head of the biceps femoris joins with the semitendinosus muscle to form the conjoint hamstring tendon. Just distal to this area, an additional group of fibers of the semitendinosus originate from medial aspect of biceps femoris. The objective of this study was to analyze the morphological characteristics of this union and to discuss its potential role in hamstring tears. Anatomical dissection was performed on 35 thighs. Samples obtained from this region were sectioned and stained with Masson's trichrome for further histological evaluation. A group of fibers from the semitendinosus muscle originating from the long head of the biceps femoris were observed in all 35 specimens. This origin was located 67 +/- 12 mm from the ischial tuberosity and was 32 +/- 14 mm in length. This group of muscle fibers had a width of 10.9 +/- 5.3 mm and a thickness in the anteroposterior axis of 3.2 +/- 1.4 mm. Its pennation angle was 9.2 +/- 1.5 degrees. Microscopic examination showed muscle cells from both muscles contacting interposed tendinous tissue. In conclusion, fibers of the semitendinosus muscle consistently arise from the proximal aspect of the long head of biceps femoris. The morphological characteristics of this junction have functional implications. The horizontal component of the semitendinosus vector could pull the long head of the biceps femoris medially during its shortening-lengthening cycle, rendering it an intrinsic risk factor for hamstring injuries.
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    Reporte de caso de feocromocitoma bilateral asociado a mutación del gen TMEM127. Primer caso chileno
    (2022) Delgado García, José Fröbel; Perez E., María Javiera; Delgado, Dasha; Lagos, Carlos; Baudrand Biggs, René; Uslar N., Thomas
    Up to 40% of Pheochromocytoma/paraganglioma syndromes are associated with germline mutations. Therefore, they are considered familial and heritable. We report a 65 year old woman with hypertension, bilateral adrenal nodules found in the CT scan and elevated urinary metanephrines. Her genetic testing showed a c.117_120delGTCT TMEM127 gene mutation. She was subjected to a laparoscopic bilateral adrenal excision. After five years of follow up, no recurrence of the disease has been recorded.
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    Arteria Lusoria and its relation to Dysphagia Lusoria. A systematic review
    (2022) Syed, Qareen H.; Valenzuela, Juan J.; Orellana, Mathias; Farfán C., Emilio; Gold, Marjorie; Beas, Antonia
    Anatomically, the aberrant subclavian artery is the last branch of the aortic arch. On its way to the right upper limb it runs posterior to the esophagus. During this passage it can compress the esophagus, producing Lusoria Dysphagia.
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    Bilateral Variation of the Vertebral Artery: Report of a Case and its Clinical ImplicationVariación Bilateral de la Arteria Vertebral; Reporte de un Caso y su Implicancia Clínica
    (2023) Inostroza Rosales, Verónica Francisca; Araya, Paulina; González, Sofia; Inzunza Hernández, Óscar Alejandro; Tramolao Osses, Jaritza Andrea; Farfan Cabello, Emilio Erasmo
    There are many reports on anatomical variations of the vertebral arteries, which may be related to origin, trajectory, caliber, and side. Bilateral variations are less frequent, however, and less common are bilateral variants that differ from each other. The aim of this work was to report the presence of a bilateral variation of the vertebral artery and its functional and clinical implications. Dissection of a female cadaver, fixed in 10 % buffered formaldehyde, which had not undergone any previous surgeries in the study area and had anatomical variations in both vertebral arteries. In each one, follow-up was done from its origin to its end, determining its trajectory, diameters, branching, and anatomical relations. A left vertebral artery was found, starting in the aortic arch and making a sinuous trajectory of 4 curvatures to enter the transverse foramen of C4. The right vertebral artery began as the first branch of the subclavian artery. Its initial trajectory was rectilinear, followed by a right concave curve, a 360° loop that included a second ascending curve, and ended straight before entering the transverse foramen of C6. The coexistence of bilateral variations in the vertebral arteries is possible. This atypical situation can potentially generate vascular and neurological pathologies, but with different symptoms and causes. Knowing these variations and deliberately searching for them will enable the specialist to make a suitable differential diagnosis.