Renan A. Orellana, MD


  • Texas Medical Center


Critical Care

Phone: 832-826-6230
Fax: 832-825-6229

Contact Information

6651 Main Street
MC E1420
Houston, TX 77030
United States
Texas US

Attending Physician, Critical Care

Texas Children's Hospital


School Education Degree Year
Baylor College of Medicine fellowship Pediatric Critical Care 2004
Nassau County Medical Center residency Pediatrics 2000
Universidad del Salvador medical school Doctor of Medicine 1996


Dr. Orellana has focused his research on the influence of development on the molecular mechanisms that regulate muscle protein metabolism during critical illness, aiming to develop nutritional support therapies for children in intensive care. By using the neonatal pig as a model for the human neonate, he has examined the impairment on the regulatory role of insulin and amino acids behind muscle wasting induced by mechanical ventilation and sepsis. The long-term goal of his research is to contribute fundamental new knowledge to design nutritional therapies during critical illness, using targeted nutritional and pharmacological strategies to support pediatric patients in different age groups.


Organization Name Role
American Academy of Pediatrics Fellow
American Society for Nutrition Member
Society of Critical Care Medicine Member

Selected Publications

Orellana RA, Suryawan A, Wilson FA, Gazzaneo MC, Fiorotto ML, Nguyen HV, Davis TA. Development aggravates the severity of skeletal muscle catabolism induced by endotoxemia in neonatal pigs. American Journal of Physiology Regulatory Integrative andComparative Physiology 2012 Mar;302(6):R682-90. Epub 2012 Jan 25. PMID: 22277935.