Dallas College

Student Experience: Denita K. Landsaw, RRT

“What interested me in the Respiratory Care program was the ability to start a professional career that has direct ‘one on one’ patient care in a field where the demand for skilled professionals is escalating. 

“The education I received has provided the ‘bridge’ I needed for a better future for myself. It has opened many doors and brought more options and opportunities into my life than I ever thought possible. The instructors are highly invested in their students’ success and make every reasonable effort to see that you will succeed. All the instructors in the Respiratory Care program at El Centro are incredible educators, mentors and passionate advocates. 

“Why would I recommend this program? As a student, you will have the benefit of having instructors with many years of field experience. You will have the opportunity to gain experience as a therapist during clinical rotations throughout hospitals such as Parkland, Methodist and Children’s, just to mention a few. You will graduate with confidence that you never knew you had. Best of all, you will have many employers and job opportunities waiting for you upon graduation. Nothing is impossible!” 

Denita K. Landsaw earned an Associate in Applied Sciences degree in Respiratory Care from El Centro. She is most proud of successfully passing all three National Board of Respiratory Care (NBRC) board exams and becoming a registered respiratory therapist (RRT).


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Zlatko Prijic, RRT

Pulmonary Rehab Coordinator Baylor University Medical Center
“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.”
Respiratory Care Program
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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
Denita Landsaw
Denita K. Landsaw, RRT
Respiratory Care Practitioner Children’s Medical Center of Dallas
Respiratory Care Program
School of Health Sciences
Updated September 10, 2026