Browsing by Author "Valenzuela, Alfonso"
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Item Docosahexaenoic acid levels in erythrocytes and their association with the University Selection Test Outcomes in Chile(2018) Valenzuela, Rodrigo; Barrera, Cynthia; Orellana, Yasna; Almagià, Atilio; Arancibia, Violeta; Larraín, Cristian; Silva, Claudio; Billeke, Pablo; Zamorano, Francisco; Martínez, Víctor; Valenzuela, Alfonso; Ivanovic, DanizaThe aim of this study was to quantitate the relative impact of DHA and AA levels in erythrocytes, anthropometric parameters and socio-economic status of school-age children, of both genders, graduated from high school in Chile, on the scholastic achievement in the University Selection Test (Prueba de Selección Universitaria, PSU) both language scholastic achievement (LSA) and mathematics scholastic achievement (MSA). A representative sample of 671 school-age young graduated from high school in 2013, 550 and 548 of them took the PSU for LSA and MSA, respectively. Only school-age young with high (n=91) and low (n=69) SA in both tests were considered. A total of 122 school-age children agreed to participate in the study and were divided as follows: Group 1: high PSU outcome (n=70; males n=48) and Group 2: low PSU outcome (n=52; males n=23). Data were analyzed by means of SAS software. Independently of gender, DHA, socio-economic status and head circumference-for-age Z-score were the most relevant parameters explaining both LSA (R2=0.650; p<0.0001) and MSA outcomes (R2=0.700; p<0.0001). These results can be useful for nutrition, health and education planning, in order to protect children starting from an early age and thus increase their school outcomes.Item Reparación del tendón del supraespinoso con técnica transósea equivalente en población sujeta a compensación laboral. ¿Cuál es el porcentaje de cicatrización?(2021) Calvo, Andrés; Valenzuela, Alfonso; Montenegro, Diego; Reinares, FelipeIntroduction: the objective of this work was to evaluate the healing rate and functional results in a retrospective cohort of patients undergoing arthroscopic repair of the supraspinatus tendon, using a double row transosseous equivalent technique. Materials and methods: during the period from January 2015 to December 2017, an arthroscopic repair of the supraspinatus was performed on forty-eight patients, using a transosseous technique, by the same surgeon. We evaluated the healing rate by an ultrasound exam at the fourth month of evolution. Functional results were evaluated using the Constant-Murley scale (CS), subjective shoulder assessment (SSV) and the visual analog scale (VAS) to objectify the pain. For the statistical analysis, t-tests were used for paired samples. This cohort of patients is subject to workers compensation. Results: the ultrasound follow-up showed a 6% re-rupture rate. The average increase in the Constant scale was 55 points, the SSV had a mean increase of 55% and the VAS score decrease 6 points. All these changes were statistically significant (p < 0.05). Conclusions: the supraspinatus tendon repair, using an equivalent transosseous technique, improves the clinical and functional results of patients, objectified with the Constant-Murley and SSV scores. In our series we obtained a healing rate on 94% of the patients