- Graduated in 1981 from the Istanbul University Edirne Faculty of Medicine (Cerrahpaşa Faculty of Medicine) ranking first in the class.
- Completed specialty training in Internal Medicine and Cardiology at the Istanbul University Institute of Cardiology between 1981 and 1991.
- Served as a Cardiology Specialist and Head of the Echocardiography Laboratory at Şişli Florence Nightingale Hospital between 1994 and 2017.
- Prof. Dr. Aytekin, who has worked on resident training and theses, has also contributed to the training of many young cardiologists.
- At the Republic of Turkey Kadir Has University Faculty of Medicine, served as Member of the Faculty Executive Board, Member of the Faculty Board, Member of the Health Board, Member of the Year 2 Education Commission and Member of the Main Education Commission.
- Each year, in the Echocardiography Laboratory under the doctor’s responsibility, personally performed or supervised the examinations of approximately 14,000 patients.
- Served as Secretary, Vice President and President of the Echocardiography Working Group of the Turkish Society of Cardiology between 1998 and 2004.
- Since 2017, has been working as Head of the Noninvasive Section in the Cardiology Department of the American Hospital and Koç University Hospital.
- Member of the Istanbul Medical Chamber of the Turkish Medical Association, the Turkish Society of Cardiology, the International Atherosclerosis Society, the European Society of Cardiology (FESC) (Fellow of European Society of Cardiology), the European Association of Cardiovascular Imaging (EACVI) and the European Atherosclerosis Society (EAS).
- The main clinical areas of interest are as follows:
- Echocardiography,
- Transesophageal Echocardiography (TEE),
- Stress Echo, Strain-Strain Rate,
- Hypertension,
- Hypercholesterolemia,
- Pulmonary Hypertension (PAH),
- Valvular diseases,
- Heart failure.
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