Student Experience: Karin M. Ozowski, RDCS (PE)

“I had always been sitting behind a desk and answering phones, both in corporate and medical offices, but I wanted to be in a hands-on medical field. I enrolled in online classes at Dallas College in 2004 and worked through the basics. I began looking at El Centro’s allied health programs, and Cardiac Sonography just grabbed me. I mean, you’re sitting there watching a heart pump in real-time! 

“My experience at El Centro was wonderful. The program included online classes plus clinicals three or four days a week. We had the flexibility to do our homework at our own convenience, either doing a little every night or doing it all over the weekend, whatever worked best for us. Our program director, Cathy Carolan, gave us great guidance — she's so enthusiastic and loves what she does so much that she gets other people excited about being cardiac sonographers. 

“I worked at Children's Medical Center for four years, where I gained experience in many different environments. I performed echoes in the Operating Room (OR), the Emergency Room (ER), the Heart Catheterization Lab, the Neonatal Intensive Care Unit (NICU), the Cardiovascular ICU and the Cardiology Clinic. Each area had different requirements for the set-up of the echo machine, the type of study done and the urgency at which the study was done. It took critical thinking skills to evaluate the situation and adapt to each situation individually.

“In 2015, I had the opportunity to change jobs and begin working in a private practice office. Although I am still performing pediatric echocardiograms, a private practice office requires a new skill set. I have the opportunity to work closely with the cardiologists and medical assistants in our main office at Medical City and in our satellite clinics in other smaller outlying areas. Working in the satellite clinics requires the doctor, the medical assistant and the echo technician to work closely as a team to keep the patient flow moving smoothly. I have learned even more in this setting because I have the opportunity to sit with the doctors and discuss the echo findings on interesting cases. 

“After years of sitting behind a desk, I now look forward to going to work every day!”

Karin Ozowski earned a Pediatric Cardiac Sonography associate degree in the program’s first graduating class at El Centro in May 2010. She also worked as an echocardiographer at Cook Children’s Medical Center in Fort Worth for a year. She is a registered diagnostic cardiac sonographer with certification in pediatric echocardiography.


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Zlatko Prijic, RRT

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“I think I'd recommend El Centro to anybody, and I always do. If someone wants to go into respiratory or wants to learn more about respiratory, I point them in that direction.”
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Jose (Josey) George, RCIS, LMRT

Registered Cardiovascular Invasive Specialist Baylor Garland Hospital
“My training and education at El Centro provided me with the knowledge and skills required to perform my job very well as an invasive cardiovascular specialist. The best part of my job is the satisfaction I gain at the end of each day, due to the fact that I’ve made a difference in my patients’ and their families’ lives by being a part of the lifesaving medical team.”
Invasive Cardiovascular Technology

Lupe Ortiz, RRT, NPS

Respiratory Care Practitioner Baylor University Medical Center
“I chose El Centro one, it was closer to home. It was a little more affordable than going to somewhere out of state or somewhere else. Just those two things were, were the main thing, the reason why I chose to go to El Centro. I think El Centro did an excellent job of preparing me for going into the workforce.”
Respiratory Care Program
Margaret Lembcke

Margaret Lembcke

Health Information Associate II, Parkland Health and Hospital System, Dallas and Baylor Medical Center at Irving
“There’s not a thing I don’t use from the information I learned in the Medical Front Office program. The classes did a very good job of teaching skills that we’d really need. We were always learning from people who have worked in the field, not just learned information in a classroom.”
Medical Front Office
Karin Ozowski
Karin M. Ozowski, RDCS (PE)
Registered Pediatric Cardiac Sonographer Pediatric Heart Specialists

Cardiac Sonography
School of Health Sciences
Updated September 10, 2026