Stanek B
Department of Cardiology, University of Vienna, Austria.
Drugs Aging. 2000 Feb;16(2):87-106. doi: 10.2165/00002512-200016020-00002.
Heart failure is a highly complex, progressive and deadly disease. When incorrectly treated, it results in irreversible structural damage to the myocardium and resists any conventional treatment. This stage has been arbitrarily termed refractory heart failure. However, with timely and sufficiently applied neurohumoral antagonists, progression can be prevented, or at least delayed. In contrast, as soon as heart failure has become moderate or severe due to advanced left ventricular dysfunction, polypharmacy is the rule. Physicians should make every effort to maintain or reconsider optimal neurohumoral antagonist therapy in such patients, even if symptomatic improvement from these agents may be slow. Proper use of diuretics is essential not only for symptom relief but also to achieve full benefit from angiotensin converting enzyme inhibitors and beta-blockers. Digitalis may be particularly indicated in severe heart failure, irrespective of rhythm. Adjunctive regimens can be helpful in specific patients, but evidence of their salutary effects to prolong life is lacking. In the decompensated state, tailoring intravenous therapy to haemodynamic goals followed by (re-)institution of optimal oral therapy is an option. Only if these strategies fail is heart transplantation justified. While waiting for a donor, patients have been bridged with various intravenous agents, most often inotropes, but symptom relief is associated with risk of increased mortality due to these drugs. New hope emerges from drugs interfering with endothelin and the cytokines, and from research into increasing contractility with calcium sensitising agents. Even though these developments follow established routes, they may enable a more effective approach to prevent worsening heart failure in every single patient.
心力衰竭是一种高度复杂、进行性且致命的疾病。若治疗不当,会导致心肌发生不可逆的结构损伤,且对任何传统治疗均有抵抗。这一阶段被随意称为难治性心力衰竭。然而,通过及时且充分应用神经体液拮抗剂,病情进展可得到预防,或至少延缓。相比之下,一旦因晚期左心室功能障碍导致心力衰竭发展为中度或重度,联合用药就成为常规做法。即使这些药物可能使症状改善缓慢,医生仍应尽力维持或重新考虑此类患者的最佳神经体液拮抗剂治疗。合理使用利尿剂不仅对缓解症状至关重要,而且对于从血管紧张素转换酶抑制剂和β受体阻滞剂中充分获益也必不可少。无论心律如何,洋地黄在严重心力衰竭中可能特别适用。辅助治疗方案对特定患者可能有帮助,但缺乏其延长生命有益效果的证据。在失代偿状态下,根据血流动力学目标调整静脉治疗,随后重新采用最佳口服治疗是一种选择。只有在这些策略均失败时,心脏移植才是合理的。在等待供体期间,患者一直通过各种静脉药物维持治疗,最常用的是强心剂,但这些药物在缓解症状的同时会增加死亡风险。干扰内皮素和细胞因子的药物以及对钙增敏剂增强心肌收缩力的研究带来了新希望。尽管这些进展遵循既定路径,但它们可能使我们能以更有效的方法预防每一位患者心力衰竭病情恶化。