September 2009 – July 2015: MD, School of Medicine, Aristotle University of Thessaloniki (AUTh) – Military School of Officers Corps (SSAS)
November 25, 2019 – March 10, 2022: Resident in Anesthesiology, Department of Anesthesiology, 401 General Military Hospital of Athens
March 24, 2022 – December 10, 2024: Resident in Anesthesiology, Department of Anesthesiology, "Attikon" University General Hospital
May 2025: Board Certification in Anesthesiology (Panhellenic Medical Association, Decision Prot. No. 20105/24-06-2025)
July 2025: Diplomate of the European Society of Anaesthesiology and Intensive Care (DESAIC)
October 2022 – Present: MSc in "Respiratory Failure & Mechanical Ventilation", National and Kapodistrian University of Athens (NKUA) (Expected Completion: October 2026)
Ioannidis P, Gerontitis D, Tsonona V, Charalambopoulos P, Samara D, Vassilopoulos A, Kouvelas K, Christoforatou E, Katsaras D. Combined Pulsed Field and Radiofrequency Ablation for Coexisting Atrial Tachycardia During or After Atrial Fibrillation Ablation. Interventional and Clinical Outcomes. J Cardiovasc Electrophysiol. 2026 Aug;37(8):1643-1655. doi: 10.1111/jce.70389. Epub 2026 Jun 1. PMID: 42226476; PMCID: PMC13475163.
Ioannidis P, Gerontitis D, Katsaras D, Tsonona V, Charalambopoulos P, Samara D, Vassilopoulos A, Kouvelas K, Christoforatou E, Katsivas A. Hybrid pentaspline pulsed-field and radiofrequency ablation for left atrial mitral isthmus block: Acute and long-term outcomes. Heart Rhythm O2. 2026 May 8;7(8):1604-1606. doi: 10.1016/j.hroo.2026.04.028. PMID: 42666847; PMCID: PMC13523567.
Gerontitis D, Katsaras D, Tsonona V, Charalampopoulos P, Kouvelas K, Samara D, Christoforatou E, Ioannidis P. Mitral Isthmus Ablation - Radiofrequency, Pulsed Field Ablation or Both? Acute and Long-term Outcomes [abstract]. Europace. 2026;28(Suppl 1):euag105.182. doi:10.1093/europace/euag105.182.
Griva P, Griva V, Samara D, Talliou C, Panagouli K, Roungeris L. Central Venous Pressure as a Predictor of Acute Kidney Injury in Cardiac Surgery: A Systematic Review of Observational Studies. Diagnostics (Basel). 2025 Feb 21;15(5):530. doi: 10.3390/diagnostics15050530. PMID: 40075778; PMCID: PMC11898736.
Griva P, Talliou C, Rougeris L, Samara D, Panagouli K, Varvarousi G, Papa M, Kathopoulis N, Chantziara V, Rovina N. Restoration of Pulmonary Compliance after Laparoscopic Gynecologic Surgery Using a Recruitment Maneuver. J Pers Med. 2024 Apr 25;14(5):451. doi: 10.3390/jpm14050451. PMID: 38793032; PMCID: PMC11122417.
