European Journal of Internal Medicine最新文献

Organ transplantation is a critical medical procedure that saves and improves lives, yet the system faces significant challenges that result in many missed opportunities. This comprehensive review examines the factors contributing to these missed opportunities and the concerns of potential donors. The shortage of donors remains a major issue, exacerbated by low registration rates, family consent refusals, and strict medical and health criteria. Inefficiencies within the organ procurement and transplantation process, including logistical delays and suboptimal matching systems, further hinder the availability of organs. Public misconceptions and cultural and religious beliefs also negatively impact donor willingness. Moreover, potential donors and their families face ethical, psychological, and procedural concerns. Ethical dilemmas revolve around issues of autonomy and informed consent, while psychological concerns include fear and anxiety about the donation process and its impact on families. Procedural issues, such as transparency, legal hurdles, and post-donation follow-up, add to the complexities of organ donation. This review explores potential solutions to address these challenges, such as enhancing public education campaigns to dispel myths, and providing incentives for proactive registration. It also recommends improving the performance of organ procurement organizations, optimizing logistics for organ transport, and developing advanced matching algorithms to ensure equitable organ allocation. Addressing donor concerns through robust ethical standards, comprehensive psychological support, and clear communication strategies is essential. By adopting these multifaceted strategies, the organ transplantation system can be made more efficient and supportive, increasing the availability of organs and ultimately saving more lives. This review underscores the need for integrated and targeted approaches to overcome the existing barriers in organ transplantation.

Mineral abnormalities are a common complication of heart failure (HF). In particular, dyskalaemia, hyponatraemia, and hypomagnesaemia are prevalent, with hypo- and hyperkalaemia observed in over 40 % of HF patients, hyponatraemia in 18-27 %, hypomagnesaemia in 7-52 %, and phosphate imbalance in 13 %. These abnormalities serve as indicators of the severity of HF and are strongly associated with an increased risk of morbidity and mortality. The neurohumoral activation, including the renin-angiotensin-aldosterone system (RAAS), the sympathetic nervous system, and vasopressin, HF medications such as diuretics and RAAS inhibitors, amd concomitant diseases such as chronic kidney disease, can disrupt mineral homeostasis. Iron deficiency (ID) is another of the most common mineral abnormalities, affecting up to 60 % of HF patients. ID is significantly associated with adverse clinical outcomes such as reduced quality of life and exercise capacity, HF re-hospitalization, and all-cause mortality. Various pathways contribute to the development of ID in HF, including reduced iron intake due to anorexia, increased hepcidin levels associated with chronic inflammation and hepatic congestion, and occult gastrointestinal bleeding due to the concomitant use of antithrombotic agents. The efficacy of iron replacement therapy has been demonstrated in clinical trials, particularly in heart failure with reduced ejection fraction (HFrEF), whilst more recently, it has also been shown to improve exercise capacity in patients with heart failure with preserved ejection fraction (HFpEF). This review focuses on potassium and phosphate abnormalities, hyponatraemia, hypomagnesaemia, and ID in HF, providing a comprehensive overview of the mechanisms, clinical significance, and intervention strategies with the latest findings.