The book "Recommendations of the European Society of Cardiology (EOC) for the diagnosis and treatment of acute and chronic heart failure" is an indispensable work that has become a real guide for cardiologists, medical practitioners and students of medical universities. This collective work, created by leading specialists in the field of cardiology, is an extensive and detailed guide that highlights modern approaches to the diagnosis and treatment of heart failure. Heart failure is a condition that affects millions of people around the world, and its diagnosis and treatment require deep knowledge and understanding. The book offers the reader not only a theoretical basis, but also practical recommendations that will help in everyday clinical practice. It considers both acute and chronic forms of the disease, which makes it relevant for different categories of patients. The topics raised in the book cover a wide range of issues, from pathophysiology and clinical manifestations of heart failure to modern diagnostic methods such as echocardiography and biomarkers. The authors also pay attention to pharmacotherapy, including the latest drugs and their combinations, as well as non-drug therapies such as rehabilitation and maintenance therapy. This makes the book particularly valuable for physicians seeking an integrative approach to treating their patients. The book will be of interest not only to professional cardiologists, but also to therapists, internists, as well as medical students who want to deepen their knowledge in the field of cardiology. It will be a useful tool for those who are preparing for exams or want to update their knowledge about the latest advances in the treatment of heart failure. The style of the authors is distinguished by clarity and accessibility, which makes it easy to assimilate even the most complex concepts. Each section of the book is accompanied by relevant clinical recommendations and examples from practice, which makes the material not only theoretically sound, but also practically applicable. The team of authors includes experts whose names are known in the cardiological community, which adds additional value and credibility to the material presented. This book also raises important topics such as the quality of life of patients with heart failure, palliative care issues, and the need for a multidisciplinary approach to treatment. With the increasing burden on health systems, understanding these aspects is becoming increasingly relevant. If you are looking for information on how to effectively diagnose and treat heart failure, this book will become your trusted assistant. It will not only enrich your knowledge, but also help you become a more confident specialist in the field of cardiology. In conclusion, the European Society of Cardiology (EOC) Guidelines for the Diagnosis and Treatment of Acute and Chronic Heart Failure is not just a book, but a whole era in the understanding and treatment of heart disease. It will be a handbook for anyone who strives for high standards in medical practice and wants to provide their patients with the best possible care.