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心脏护理 · 深度解析
Lipoprotein(a), or Lp(a), is a genetically determined particle in your blood. About 1 in 5 people inherit a level high enough to meaningfully raise lifetime risk of heart attack and stroke, independently of LDL cholesterol. It is measured once in a lifetime, and it is not part of a standard lipid panel.
快速回答
Lipoprotein(a) is set by your genes, does not respond meaningfully to diet or exercise, and is an independent risk factor for heart attack, ischaemic stroke and calcific aortic stenosis. Roughly 20% of people have an elevated level. It needs measuring only once in a lifetime, with a single fasting blood test. The result changes how aggressively your other cardiovascular risk factors should be managed. If you have never had it measured, it is worth doing. At Hisential we order it as a standard part of cardiovascular risk assessment and explain exactly what the number means for you.
医学审核 Dr. Anthony Stanislaus, MBBS, PBM, Cert. Men's Health
最后审核 2026年5月1日 · 下次审核 2026年11月1日
脂蛋白(a)，简称Lp(a)，是一种类似于LDL的颗粒，附着有一种额外的蛋白质，称为载脂蛋白(a)。您的水平由编码该蛋白质的基因决定。它基本上从童年起就固定不变，不会随着饮食、运动、他汀类药物治疗或体重减轻而发生显著变化。
升高的Lp(a)在动脉中会产生三种影响：它会加速动脉粥样硬化（类似于LDL），促进血栓形成（凝血），并加速主动脉瓣钙化。大型遗传学和临床结果研究已将其确立为心肌梗死、缺血性中风和钙化性主动脉瓣狭窄的独立因果风险因素。所谓“独立”，是指它增加了来自LDL、血压、吸烟和糖尿病的风险，而不是被这些因素所涵盖。
Roughly 20% of the global population inherits a level high enough to matter clinically. Despite this, it is essentially never ordered in routine Singaporean general practice.
欧洲心脏病学会建议每位成年人一生中至少测量一次Lp(a)。在实践中，获益最大的群体包括：
如果您曾经做过结构化血脂检查但其中未包含Lp(a)，那几乎可以肯定是被遗漏了。
仅需一次空腹静脉抽血。几个工作日内即可出结果。无需影像检查，无需后续样本，无需每年复查。由于该水平由基因决定，对于绝大多数人而言，一生测量一次足矣。
在Hisential，该检测可在您进行更广泛的血脂检查和风险评估时同时完成，因此无需额外预约。
Lp(a)的报告单位为mg/dL（质量）或nmol/L（颗粒浓度）。这两个单位不能直接换算，但临界值是对应的。
Once Lp(a) passes 50 mg/dL (about 125 nmol/L) it is an independent contributor to cardiovascular risk, meaning the effect remains after accounting for LDL cholesterol, blood pressure, smoking and diabetes. In the Copenhagen City Heart Study, the adjusted risk of heart attack rose from about 1.6 times at 30 to 84 mg/dL, to about 2.6 times at 85 to 119 mg/dL, and to about 3.6 times at 120 mg/dL and over, compared with people below 5 mg/dL [7].
| Lp(a) level | Adjusted risk of heart attack |
|---|---|
| 30 to 84 mg/dL | About 1.6 to 1.7 times |
| 85 to 119 mg/dL | About 2.6 times |
| 120 mg/dL and above | About 3.6 times |
这些数字仅供参考，而非最终定论。临床问题始终是：鉴于此Lp(a)水平，您的其余计划应如何调整？
Lp(a)本身对生活方式或他汀类药物的反应不明显。烟酸可适度降低其水平，但并不用于此目的。针对Lp(a)的特定疗法（如pelacarsen和olpasiran等基于RNA的药物）正处于临床试验后期，但尚未获批用于常规治疗。
当Lp(a)偏高时，实际策略是加强每一项 其他 可改变的心血管危险因素：
Lp(a)由单一基因决定，从儿童晚期开始基本保持稳定。除极少数情况（怀孕、严重全身性疾病、肾衰竭、甲状腺疾病）外，您35岁时的数值与75岁时相同。重复检测是不必要的，也是对金钱的浪费。随着时间推移而改变的是您针对检测结果所采取的行动。
由我们的临床团队撰写的清晰解答。点击任何问题即可获取其直接永久链接，或联系您的个人礼宾服务人员咨询其他事宜。
It is not part of a standard lipid panel and is rarely ordered in Singaporean general practice. The evidence supporting once-in-a-lifetime Lp(a) testing has only become guideline-strength in the last several years, and uptake has been slow. At Hisential we include it routinely in cardiovascular risk assessment.
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