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Oklahoma State University

Anesthesia Faculty and Staff


Stefano Di Concetto, DVM, MSc, DACVAA

stefano di concetto

Originally from Mantua, Italy, Dr. Di Concetto earned his DVM degree from the University of Parma in Italy and his MSc from the Royal Veterinary College and Zoological Society of London. His research interests are the use of veterinary acupuncture in anesthesia practice and pain control in ruminants. Before becoming an anesthesiologist, Do Concetto was a zoo veterinarian.

In his spare time, Di Concetto enjoys hiking, cooking and reforestation projects.

Kip Lemke, DVM, MSc, DACVAA

kip lemke

Dr. Lemke is a professor. Originally from Normal, Ill., he earned his BSc (1981), DVM (1983) and MSc (1993) from the University of Illinois. He is also a Diplomate of the American College of Veterinary Anesthesia and Analgesia (1995). Lemke's research interests focus on neural blockade in dogs and balanced anesthesia in horses.

Lemke has earned the Pfizer Carl J. Norden Distinguished Teacher Award (2000) and the Pfizer Grant for Innovation in Teaching Methodology (2010). He was on the Board of Scientific Reviewers for the American Journal of Veterinary Research from 2002-2005. Lemke currently sits on the Editorial Board of Veterinary Anesthesia and Analgesia (2010-present) and has authored numerous scientific articles and book chapters on anesthesiology and pain management.

Veterinary Technicians

Mayte Aleman-Carter, RVT

mayte aleman-carter

Originally from Panama, Mayte came to Oklahoma State University to pursue a Master of Science in Animal Reproduction in the Department of Animal Science in 2003. After completing her M.S. degree, she continued her education and completed the Veterinary Technician program at Tulsa Community College graduating in 2007.

Mayte started working at Oklahoma State University’s Veterinary Medical Hospital as a floating technician in 2008. Shortly after that, she took an anesthesia technician position in the anesthesia department. Last year she transferred to the Oncology and Theriogenology departments.

Mayte is married and has two children. She spends her free time with family and her horses.

Arantxa Lasa, RVT

arantxa lasa

Arantxa was born in Venezuela and moved to the United States when she was five years old. Arantxa attended Broken Arrow High School, graduating in 2008. After high school, she went on to attend Oklahoma State University and received her bachelor’s degree in Zoology. After college, she took some time off and interned at the Cincinnati Zoo and Botanical Garden as an animal caretaker. Arantxa also spent one month in Zimbabwe interning on a lion rehabilitation reserve. In 2014, Arantxa started at Tulsa Community College in the Veterinary Technology program. Throughout school, she worked as a technician at a small animal and exotics hospital in Tulsa. After graduation from TCC, Arantxa accepted a job at OSU working as a food animal technician. Arantxa enjoys spending time with her animals, traveling and reading

Sue McKenzie, RVT, VTS (anesthesia)

sue mckenzie


Shalee Ratliff, RVT

shalee ratliff

Shalee Ratliff graduated from the Tulsa Community College Veterinary Technology Program in May 2013, earning RVT status in July 2013. Shalee joined the Anesthesia Team in January 2015, and anticipates earning specialty status in Anesthesia.

Shalee’s school activities included running track, and she continues to enjoy a variety of physical activities, including playing softball. Shalee also enjoys hunting, spending time with her Blue Heeler Ollie (and her puppies!) and considers herself to be a “lake and river bum” in her free time.