Ricardo joined the Stanford University as a Clinical Research Coordinator Associate in October, 2022. Ricardo graduated from the Instituto Tecnológico y de Estudios Superiores de Monterrey (ITESM), Mexico as an MD. He has previous experience in research in neurology and internal medicine. He is an aspiring physician determined to provide high-quality health care to all patients, and passionate about improving and developing medicine. In his free time, Ricardo likes playing board games, cooking, hiking, and traveling.

Current Role at Stanford

Clinical Research Coordinator Associate at Dermatology Department

All Publications

  • Risk Factors for Mortality of Hospitalized Adult Patients with COVID-19 Pneumonia: A Two-Year Cohort Study in a Private Tertiary Care Center in Mexico. International journal of environmental research and public health López-Pérez, C. A., Santa Cruz-Pavlovich, F. J., Montiel-Cortés, J. E., Núñez-Muratalla, A., Morán-González, R. B., Villanueva-Gaona, R., Franco-Mojica, X., Moreno-Sandoval, D. G., González-Bañuelos, J. A., López-Pérez, A. U., Flores-González, M., Grijalva-Ruiz, C., Valdez-Mendoza, E. D., González-Lucano, L. R., López-Zendejas, M. 2023; 20 (5)


    During the COVID-19 pandemic, the high prevalence of comorbidities and the disparities between the public and private health subsystems in Mexico substantially contributed to the severe impact of the disease. The objective of this study was to evaluate and compare the risk factors at admission for in-hospital mortality of patients with COVID-19. A 2-year retrospective cohort study of hospitalized adult patients with COVID-19 pneumonia was conducted at a private tertiary care center. The study population consisted of 1258 patients with a median age of 56 ± 16.5 years, of whom 1093 recovered (86.8%) and 165 died (13.1%). In the univariate analysis, older age (p < 0.001), comorbidities such as hypertension (p < 0.001) and diabetes (p < 0.001), signs and symptoms of respiratory distress, and markers of acute inflammatory response were significantly more frequent in non-survivors. The multivariate analysis showed that older age (p < 0.001), the presence of cyanosis (p = 0.005), and previous myocardial infarction (p = 0.032) were independent predictors of mortality. In the studied cohort, the risk factors present at admission associated with increased mortality were older age, cyanosis, and a previous myocardial infarction, which can be used as valuable predictors for patients' outcomes. To our knowledge, this is the first study analyzing predictors of mortality in COVID-19 patients attended in a private tertiary hospital in Mexico.

    View details for DOI 10.3390/ijerph20054450

    View details for PubMedID 36901460

    View details for PubMedCentralID PMC10001871

  • Adult diffuse midline gliomas H3 K27-altered: review of a redefined entity JOURNAL OF NEURO-ONCOLOGY Lopez-Perez, C., Franco-Mojica, X., Villanueva-Gaona, R., Diaz-Alba, A., Rodriguez-Florido, M., Navarro, V. 2022; 158 (3): 369-378


    Diffuse midline glioma (DMG) H3 K27-altered is a type of high-grade gliomas first recognized as a new entity in the 2016 World Health Organization Classification of Central Nervous System (CNS) Tumors as DMG H3 K27M-mutant, recently renamed in the new 2021 WHO classification. The aim of this review is to describe the characteristics of diffuse midline gliomas H3 K27-altered in the adult population.We performed a review of the current literature regarding the genetic, clinical, imaging characteristics and management of diffuse midline gliomas H3 K27-altered in adult patients.The 2021 WHO classification now designates the previously recognized DMG H3K27M-mutant as DMG H3 K27-altered, recognizing the alternative mechanisms by which the pathogenic pathway can be altered. Thus, the diagnostic criteria for this entity consist of diffuse growth pattern, midline anatomic location, and H3 K27-specific neuroglial mutations. DMGs' characteristic midline location makes them difficult to surgically resect and biopsy, carrying high mortality and morbidity rates, with median survival ranging from 9 to 12 months in adult patients.The diagnosis of DMGs H3 K27-altered in adult patients should be considered upon neurological symptoms associated with an infiltrative midline brain tumor detected on imaging. Future studies are necessary to continue refining their characteristics in this age group.

    View details for DOI 10.1007/s11060-022-04024-5

    View details for Web of Science ID 000795517400001

    View details for PubMedID 35567713