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NT-proANP levels in peripheral and cardiac circulation
Journal of Interventional Cardiac Electrophysiology ( IF 1.8 ) Pub Date : 2021-06-25 , DOI: 10.1007/s10840-021-01020-z
Petra Büttner 1 , Timm Seewöster 2 , Danilo Obradovic 1 , Gerhard Hindricks 2 , Holger Thiele 1 , Jelena Kornej 3
Affiliation  

Background

Recent studies have reported an association between N-terminal atrial natriuretic peptide (NT-proANP) and the progression of atrial fibrillation (AF). However, NT-proANP levels in peripheral and cardiac circulation in AF patients and in non-AF individuals need to be defined. The aims of the current study are (1) to analyze NT-proANP levels in peripheral and cardiac circulation in AF patients and (2) to compare NT-proANP levels in individuals with and without AF.

Methods

We recruited AF patients who were undergoing their first AF catheter ablation and non-AF individuals. Blood plasma samples taken from the femoral vein and the left atrium (LA) were collected before AF ablation in the AF patients and from the cubital vein in the non-AF controls. Low voltage areas (LVAs) were determined using high-density maps during catheter ablation and defined as < 0.5 mV.

Results

The study included 189 AF patients (64 ± 10 years, 59% male, 61% persistent AF, 30% LVAs) and 26 non-AF individuals (58 ± 10 years, 50% male). Patients with AF were significantly older and had larger LA (p < 0.05). Compared to non-AF controls, peripheral and cardiac NT-proANP levels were significantly higher in AF patients without and with LVAs (median 5.4, 10.5, 14.8 ng/ml, respectively, p < 0.001). In multivariable analysis, NT-proANP (OR 1.238, 95% CI 1.007–1.521, p = 0.043) remained significantly different between non-AF individuals and AF patients. In AF, NT-proANP levels were significantly higher in the cardiac blood samples than in the peripheral blood (median 13.0 versus 11.4 ng/ml, p = 0.003). The ability to predict LVAs was modest when using cardiac NT-proANP (AUC 0.661) and peripheral NT-proANP (AUC 0.635), without statistical difference (p = 0.937).

Conclusions

NT-proANP levels are higher in individuals with AF than in controls and are more pronounced in progressed AF. Elevated cardiac and peripheral NT-proANP levels similarly predict LVAs.



中文翻译:

外周和心脏循环中的 NT-proANP 水平

背景

最近的研究报告了 N 末端心房利钠肽 (NT-proANP) 与心房颤动 (AF) 进展之间的关联。然而,需要确定 AF 患者和非 AF 个体外周和心脏循环中的 NT-proANP 水平。本研究的目的是 (1) 分析 AF 患者外周和心脏循环中的 NT-proANP 水平,以及 (2) 比较患有和未患有 AF 的个体的 NT-proANP 水平。

方法

我们招募了正在接受首次 AF 导管消融的 AF 患者和非 AF 个体。AF 患者在 AF 消融前采集股静脉和左心房 (LA) 血浆样本,非 AF 对照组采集肘静脉血浆样本。低电压区域 (LVA) 在导管消融期间使用高密度图确定,定义为 < 0.5 mV。

结果

该研究包括 189 名 AF 患者(64 ± 10 岁,59% 男性,61% 持续性 AF,30% LVA)和 26 名非 AF 个体(58 ± 10 岁,50% 男性)。房颤患者年龄显着增加,LA 更大(p  < 0.05)。与非 AF 对照组相比,无 LVA 和有 LVA 的 AF 患者外周和心脏 NT-proANP 水平显着升高(中位数分别为 5.4、10.5、14.8 ng/ml,p  < 0.001)。在多变量分析中,NT-proANP (OR 1.238, 95% CI 1.007–1.521, p  = 0.043) 在非 AF 个体和 AF 患者之间仍然存在显着差异。在 AF 中,心脏血液样本中的 NT-proANP 水平显着高于外周血(中位数 13.0 对 11.4 ng/ml,p = 0.003)。使用心脏 NT-proANP (AUC 0.661) 和外周 NT-proANP (AUC 0.635) 预测 LVA 的能力是适度的,没有统计学差异 ( p  = 0.937)。

结论

AF 个体的 NT-proANP 水平高于对照组,并且在进展性 AF 中更为明显。心脏和外周 NT-proANP 水平升高同样可以预测 LVA。

更新日期:2021-06-28
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