Proceedings of the International scientific and practical conference ―Paris Science and Education Forum‖ (March 2-4, 2026) / Publisher website: www.naukainfo.com. – Paris, France, 2026. - 293 p.

244 Conclusions This case is of high clinical and educational value. It demonstrates the importance of forming clinical thinking through real-life complex scenarios — a key element in modern medical training. The material will be useful for cardiologists, arrhythmologists, imaging specialists, cardiac surgeons, general practitioners, pulmonologists, and transplant specialists. REFERENCES: 1. Arbelo E., Protonotarios A., Gimeno J.R., et al. 2023 ESC Guidelines for the management of cardiomyopathies. European Heart Journal. 2023. Vol. 44, No. 37. P. 3503–3626. DOI: 10.1093/eurheartj/ehad194. 2. Ommen S.R., Ho C.Y., Asif I.M., et al. 2024 AHA/ACC/AMSSM/HRS/PACES/SCMR Guideline for the Management of Hypertrophic Cardiomyopathy. Journal of the American College of Cardiology. 2024. Vol. 83, No. 23. P. 2324–2405. DOI: 10.1016/j.jacc.2024.02.014. 3. Van Gelder I.C., Rienstra M., Buntin K.V., et al. 2024 ESC Guidelines for the management of atrial fibrillation developed in collaboration with the European Association for Cardio-Thoracic Surgery (EACTS). European Heart Journal. 2024. Vol. 45, No. 36. P. 3314–3414. DOI: 10.1093/eurheartj/ehae176. 4. Joglar J.A., Chung M.K., Armbruster A.L., et al. 2023 ACC/AHA/ACCP/HRS Guideline for the Diagnosis and Management of Atrial Fibrillation. Circulation. 2023. Vol. 149, No. 5. P. e109–e279. DOI: 10.1161/CIR.0000000000001193. 5. McDonagh T., Metra M., Adamo M., et al. 2021 ESC Guidelines for the diagnosis and treatment of acute and chronic heart failure. European Heart Journal. 2021. Vol. 42, No. 36. P. 3599–3726. DOI: 10.1093/eurheartj/ehab368. 6. Humbert M., Kovacs G., Hoeper M.M., et al. 2022 ESC/ERS Guidelines for the diagnosis and treatment of pulmonary hypertension. European Heart Journal. 2022. Vol. 43, No. 38. P. 3618–3731. DOI: 10.1093/eurheartj/ehac237. 7. Leard L.E., Holm A.M., Valapour M., et al. Consensus document for the