Cardiologists for Cardiac insufficiency

Ο Κάββουρας Χαράλαμπος M.D, Msc, PhD, FSCAI είναι Επεμβατικός Καρδιολόγος- Παιδοκαρδιολόγος εξειδικευθείς στην Παιδοκαρδιολογία και στις Συγγενείς Καρδιοπάθειες Ενηλίκων-Παίδων στο Royal Brompton and Harefield Hospital του Ηνωμένου Βασιλείου καθώς και στην Επεμβατική Καρδιολογία στο University Hospital Toronto, Peter Munk Cardiac Center στον Καναδά. Διατηρεί το ιδιωτικό του ιατρείο στο Κολωνάκι. Ο ιατρός αποφοίτησε από το πανεπιστήμιο του PECS στην Ουγγαρία, είναι κάτοχος MSc Kαρδιακή Aνεπάρκεια από το Imperial College και Διδάκτωρ του Πανεπιστήμιου Αθηνών με θέμα σχετικό με την Επεμβατική Καρδιολογία και τις Συγγενείς Καρδιοπάθειες. Ολοκλήρωσε την ειδικότητα της Καρδιολογίας στο Β΄ Καρδιολογικό τμήμα του νοσοκομείου Ευαγγελισμός. Ακολούθως υπήρξε εκπαιδευόμενος στην Επεμβατική Καρδιολογία στο Αιμοδυναμικό εργαστήριο του ίδιου νοσοκομείου. Εν συνεχεία και με υποτροφία της Ελληνικής Καρδιολογικής Εταιρίας, ξεκίνησε την εκπαίδευση του στις Συγγενείς καρδιοπάθειες και στην Πνευμονική Υπέρταση Ενηλίκων και Παίδων αρχικά στο Πανεπιστημιακό νοσοκομείο του MANCHESTER και κατόπιν στο ROYAL BROMPTON HOSPITAL. Αμέσως μετά και επι διετία συνέχισε την εκπαίδευση του στο ROYAL BROMPTON HOSPITAL στο Ηνωμένο Βασίλειο στις Συγγενείς καρδιόπαθειες και την πνευμονική υπέρταση ενώ εξειδικεύτηκε περαιτέρω και στην Υπερηχογραφία των συγγενών καρδιοπαθειών και στην Δυναμική υπερηχογραφία (Stress echo). Κατά την εκπαίδευση του στις συγγενείς καρδιόπαθειες πραγματοποίησε πάνω από 1500 υπερηχογραφήματα καρδιάς σε ασθενείς με συγγενή καρδιοπάθεια και πνευμονική υπέρταση ενώ έκανε περισσότερους από 200 δεξιούς καθετηριασμούς σε ασθενείς με πνευμονική υπέρταση. Κατοπιν εκπαιδεύτηκε στην επεμβατική καρδιολογία στο Πανεπιστημιακό νοσοκομείο του Τορόντο (Peter Munk Cardiac Center) όπου πραγματοποίησε πάνω από 1000 στεφανιογραφίες και 300 αγγειοιοπλαστικές. Ο ιατρός διετέλεσε Επιμελητής στο τμήμα συγγενών καρδιοπαθειών στο Πανεπιστημιακό Νοσοκομείο του Liverpool ενώ τα τελευταία χρόνια διατελεί Επιμελητής στο Τμήμα Συγγενών Καρδιοπαθειών και Παιδοκαρδιολογίας στο Νοσοκομείο ΜΗΤΕΡΑ κι είναι επιστημονικός Συνεργάτης της Καρδιολογικής Κλινικής του Πανεπιστημίου Αθηνών και του 251 Γενικού Νοσοκομείου Αεροπορίας. Τέλος, έχει στο ενεργητικό του πλήθος Δημοσιεύσεων καθώς και Προφορικών ομιλιών και ανακοινώσεων σε διεθνή καρδιολογικά συνέδρια.

Georgios Sionis is a Cardiologist and maintains a private practice in Agia Paraskevi. He is a graduate of the Medical School of Pecs in Hungary. Currently, in addition to his private practice, he is a Consulting Physician in the Hemodynamics Department of the Central Clinic of Athens and at Metropolitan General Hospital in Cholargos. The doctor has extensive experience and has specialized in cardiac ultrasound, exercise testing, 24-hour rhythm and blood pressure monitoring (Holter), interventional cardiology, the Coronary Intensive Care Unit (CICU) – Infarction Unit, and the latest echocardiographic techniques. Furthermore, he has participated in numerous conferences and seminars both in Greece and abroad. In his private practice, he manages cases across the entire spectrum of cardiology, understanding the unique needs of his patients.

Papakonstantinou Euaggelia - Erasmia is a Cardiologist and maintains a private practice in Nea Smyrni. She was admitted to the Medical School of the National and Kapodistrian University of Athens in 2005 through national entrance exams and graduated with a grade of 8.3 in 2011. Subsequently, she specialized in Cardiology in North Rhine-Westphalia, Germany, until 2019, when she obtained her specialty title in Düsseldorf. She has three years of clinical experience in the High Dependency and Intensive Care Unit in hospitals affiliated with the University Hospitals of Essen and Aachen and holds certification in transthoracic and transesophageal echocardiography, as well as in emergency management including resuscitation and safe patient transfer (European Resuscitation Council). During her extended stay in Germany until 2021, she trained in the Hemodynamics Laboratory, the Department of Cardiac Ultrasound, and the Electrophysiology and Pacing Department. Currently, she is a Consultant in the Electrophysiology and Pacing Department at the "Errikos Dynan" Hospital Center.

Military cardiologist Papanastasiou Xristos was admitted to the Military School of Officers Corps (S.S.A.S.) in 2006 and obtained his Medical Degree (MD) from the Medical School of Aristotle University of Thessaloniki (A.U.Th.) in 2012, graduating with the grade "Very Good" (8.1).

In 2016, he completed his postgraduate studies in "Medical Research Methodology" at the Medical School of A.U.Th., achieving the grade "Excellent" (9.4). Subsequently, he specialized for two years in the Pathology Clinic of the 424 General Military Training Hospital and for four years in the 1st University Cardiology Clinic of the General Hospital AHEPA.

In June 2025, he completed his doctoral thesis with the grade "Excellent with Distinction," on the topic: "The diagnostic and prognostic value of cardiac magnetic resonance imaging in patients with heart failure."

He holds the European Diploma in Cardiology and the European Diploma in Echocardiography, following successful participation in pan-European examinations.

Throughout his medical career, Dr. Papanastasiou has collaborated in research with leading universities in Europe and the United States of America, publishing significant scientific articles in reputable international journals with a high impact factor, covering the entire spectrum of cardiovascular diseases.

Simultaneously, he has served as a reviewer for prestigious international scientific journals such as the Journal of the American College of Cardiology: Cardiovascular Imaging, American Heart Journal, Heart (official journal of the British Cardiovascular Society), and International Journal of Cardiology.

Parparas Konstantinos is a Cardiologist with a private practice in Thessaloniki. He studied at the Aristotle University of Thessaloniki and specialized in clinics in Germany. He has substantial experience, having worked as a Cardiologist Consultant in major German clinics. He specializes in interventional cardiology and has been performing angioplasties in coronary arteries since 2014 to the present (performing several thousand angioplasties, including many of high complexity, e.g., in left main coronary artery stenosis, Rotablation procedures), and since 2020, he has also been involved in transcatheter aortic valve implantation (TAVI).

Xourzamanis Aleksandros is a Cardiologist with a private practice in Thessaloniki. He holds a PhD from the Medical School of Aristotle University of Thessaloniki, where he also earned his medical degree. He specialized in Cardiology and Pathology and subsequently pursued further specialization in Echocardiography at Middlesex University in London. He has served as a Scientific Collaborator in the Echocardiography Laboratory at the 1st University Pulmonology Clinic of Aristotle University of Thessaloniki and as a Senior Registrar (Eπιμελητής Α’) in the National Health System (ESY). In his practice, he provides high-level services for the diagnosis and management of the full spectrum of cardiovascular diseases, while also offering specialized examinations such as electrocardiograms, cardiac triplex, stress testing, and issuing certificates and attestations for preschool and pre-athletic assessments. Finally, he is the General Secretary of the Administrative Board of the Cardiology Society of Northern Greece and has multiple publications in Greek and international scientific journals.

Nikolaos Lionakis is a Specialist Cardiologist with a subspecialty in Interventional Cardiology and maintains a private practice in the center of Athens (13 Papadiamantopoulou Street, Megaron Mousikis area). He is a graduate of the Medical School of the National and Kapodistrian University of Athens. After his specialization in Cardiology, he received further training in Interventional Cardiology, specifically in the interventional treatment of Coronary Artery Disease, obtaining the official subspecialty certification from the Ministry of Health. For the past 15 years, he has continuously worked as a Registrar in the National Health System, and since 2021, he has served as a Senior Registrar at the Cardiology Clinic and the Hemodynamic Laboratory of the Army Fund Hospital (N.I.M.T.S.). In his private practice, he manages cases covering the entire spectrum of cardiology aimed at the prevention, diagnosis, and treatment of cardiovascular diseases.

Sykiotis Aleksandros is a Cardiologist with a private practice in Gerakas. He studied at the Medical School of the National and Kapodistrian University of Athens and specialized at the General State Hospital of Athens. He has extensive clinical experience, having worked in major clinics, and currently serves as Deputy Director of Electrophysiology and Pacemakers at Errikos Dynan Hospital.

Andreas Katsimardos is a Military Physician, Interventional Cardiologist, consultant at the Cardiology Department of the 417 NIMTS, and maintains a private practice in Gerakas. He holds a degree from the Medical School of Aristotle University of Thessaloniki. He specialized in Cardiology at the 401 General Military Hospital of Athens and subsequently at the University General Hospital "Attikon." He further specialized in Interventional Cardiology at the University General Hospital of Alexandroupolis.

Dr Papathanasiou Sotirios is a Cardiologist with a private practice in Kolonaki. He holds a PhD from the Medical School of the National and Kapodistrian University of Athens, with research focusing on atherosclerotic disease and arrhythmias. He has specialized in interventional cardiology and advanced diagnostic imaging ultrasound techniques for cardiovascular pathology, with particular expertise in complex arrhythmias, atrial fibrillation, all valvular heart diseases, and the study of cardiovascular pathology in children. His specific areas of interest include the early diagnosis and management of progressive atherosclerotic disease at all stages, heart failure, as well as pediatric and adult cardiomyopathies. A significant portion of cardiovascular diagnostics is conducted in his cardiology practice – diagnostic laboratory, while more complex diagnostic procedures are performed in collaboration with major medical centers. He collaborates with and serves as the scientific director of departments in leading hospitals in Athens, as well as various diagnostic groups. Additionally, he is a member of the Hellenic Society of Lipidology and Atherosclerosis, the European Association of Percutaneous Cardiovascular Interventions, the Hellenic Cardiological Society, and the European Society of Cardiology.