后支架分流储备和临床结果之间的长期和时间关系
Doyeon Hwang1, Jaewook Chung1, Seokhun Yang1
1Department of Internal Medicine and Cardiovascular Center, Seoul National University Hospital, Seoul, Korea.
JACC. Cardiovascular interventions
|December 10, 2025
概括
穿皮冠状动脉干预 (PCI) 后的低分流储备 (FFR) 预测了长期的目标血管故障,特别是在3年内. 然而,它对非支付段TVR的影响在5年内持续存在.
科学领域:
- 心脏病学 心脏病学
- 干预心脏病学 干预心脏病学
- 血管生理学 血管生理学
背景情况:
- 分流储备 (FFR) 评估了残留疾病后皮肤冠状动脉干预 (PCI) 的流量限制.
- 了解PCI后FFR的长期预后价值对于患者管理至关重要.
研究的目的:
- 评估PCI后FFR对临床结果的5年预后影响.
- 分析FFR的预测价值随时间推移的时间趋势.
主要方法:
- 对2,128名成功植入药物释放支架的患者和PCI后FFR测量的分析.
- 主要结局:目标血管衰竭 (TVF),包括心脏死亡,目标血管MI和目标血管再血管化 (TVR).
- 5年的随访以评估临床事件.
主要成果:
- 在PCI后的低FFR组中,5年后TVF的风险更高 (aHR:1.95).
- 在PCI后3年内,TVF的风险增加最为突出 (aHR:2.00),随后减弱 (aHR:1.80).
- 在非体段的TVR显示在PCI后3年内 (aHR: 2.78) 和超越 (aHR: 6.73) 的低FFR组中持续存在更高的风险.
结论:
- 后PCI FFR显著影响5年的TVF,在最初的3年中效果更强.
- 在TVR中PCI后FFR的预后意义延伸到整个5年随访期间.
- 来自国际后PCI FFR扩展注册表 (NCT05672862) 的发现.
相关概念视频
02:20Longitudinal Research
Sometimes we want to see how people change over time, as in studies of human development and lifespan. When we test the same group of individuals repeatedly over an extended period of time, we are conducting longitudinal research. Longitudinal research is a research design in which data-gathering is administered repeatedly over an extended period of time. For example, we may survey a group of individuals about their dietary habits at age 20, retest them a decade later at age 30, and then again...
01:21Drug Accumulation During Multiple Dosing: Repetitive IV Injections
Calculating drug dosage and accumulation in multiple-dose regimens is crucial for achieving therapeutic efficacy while avoiding toxicity. This involves determining the plasma drug concentrations over time to optimize dosing schedules. The principle of superposition is fundamental in this process, allowing for the prediction of drug concentration in plasma following multiple doses based on single-dose data.The principle of superposition asserts that the plasma concentration-time curves from...
01:24Drug Accumulation During Multiple Dosing: Intermittent IV Infusions
Intermittent intravenous (IV) infusion is a method of drug administration where medications are delivered over short infusion periods followed by intervals of no drug delivery. This approach helps to prevent sustained high drug concentrations in the bloodstream, reducing the risk of adverse effects associated with prolonged exposure. Unlike continuous infusion, steady-state concentrations may not be achieved during a single dosing cycle but can be reached through repeated...
01:14Pharmacokinetic–Pharmacodynamic Relationship: Duration of Dose-Effect Relationship
For drugs producing a quantal response, onset occurs when plasma concentration reaches a minimum effective level (Cmin). The drug's action duration depends on how long the plasma concentration remains above Cmin.Two primary factors influence this duration: dose size and the rate of drug removal from the action site. Both depend on the drug's redistribution to poorly perfused tissues and elimination processes. A larger dose promotes rapid onset and prolongs the effect's duration.Consider a...
01:23Pharmacokinetic–Pharmacodynamic Relationship: Influence of Elimination Half-Life on Effect Duration
Drug elimination from the body primarily occurs through metabolic and excretion pathways. Hepatic metabolism transforms lipophilic drugs into hydrophilic forms for excretion, typically via enzymatic processes classified as phase I (modification) and phase II (conjugation). Renal excretion eliminates drugs and metabolites through filtration and secretion in the kidneys. Impairment in liver or kidney function can hinder these processes, delaying drug clearance and extending the drug’s half-life.
01:26Longitudinal Studies
Longitudinal studies are also widely used in other medical and social science fields. For instance, in cardiovascular research, they can monitor patients' health over decades to identify risk factors for heart disease, such as high cholesterol or smoking, and evaluate the long-term effectiveness of preventive measures. Similarly, in mental health studies, researchers might follow individuals from adolescence into adulthood to understand the development and progression of conditions like...