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The Rate of Asystolic Reflex Syncope Is Not Influenced by Age
JACC: Clinical Electrophysiology ( IF 8.0 ) Pub Date : 2024-01-17 , DOI: 10.1016/j.jacep.2023.11.021
Michele Brignole 1 , Antonella Groppelli 1 , Vincenzo Russo 2 , Artur Fedorowski 3 , Gert van Dijk 4 , Paolo Alboni 5
JACC: Clinical Electrophysiology ( IF 8.0 ) Pub Date : 2024-01-17 , DOI: 10.1016/j.jacep.2023.11.021
Michele Brignole 1 , Antonella Groppelli 1 , Vincenzo Russo 2 , Artur Fedorowski 3 , Gert van Dijk 4 , Paolo Alboni 5
Affiliation
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The head-up tilt test (HUT) and other evidence suggest that the vagal effect on the heart decreases with age. The main aim of the study was to assess whether this age effect also affects the rate of asystole in spontaneous reflex syncope (RS). We performed an analysis of pooled individual data from 4 studies that recruited patients ≥40 years of age affected by certain or suspected RS who received an implantable loop recorder (ILR) and reported follow-up data on syncope recurrence. We assessed the presence of asystolic syncope of >3 seconds or nonsyncopal asystole of >6 seconds recorded by ILR and compared the findings to tilt test results on the same patients. A total of 1,046 patients received ILR because of unexplained syncope. Of these, 201 (19.2%) had a documentation of an asystolic event of 10-second (Q1-Q3: 6- to 15-second) duration. They were subdivided in 3 age tertiles: ≤60 years (n = 64), 61 to 72 years (n = 72), and ≥73 years (n = 65). The rate of asystolic events was similar in the 3 subgroups (50.1%, 50.1%, and 49.2%, respectively; = 0.99). Conversely, the rate of asystolic syncope induced during HUT (performed in 169 of 201) was greatly age dependent (31.0%, 12.1%, and 11.1% in increasing age tertiles, respectively; = 0.009). The rate of the spontaneous asystolic form of RS documented by ILR is constant at any age >40 years. Conversely, the rate of asystolic syncope induced by HUT is higher in younger patients and decreases with age. The contrasting results between spontaneous and tilt-induced events cast doubt on the concept that asystole in RS is less common in older patients.
中文翻译:
心搏反射性晕厥发生率不受年龄影响
平视倾斜试验(HUT)和其他证据表明,迷走神经对心脏的影响随着年龄的增长而减弱。该研究的主要目的是评估这种年龄效应是否也会影响自发反射性晕厥(RS)的心搏停止率。我们对 4 项研究的汇总个体数据进行了分析,这些研究招募了年龄≥40 岁、受某些或疑似 RS 影响的患者,这些患者接受了植入式循环记录仪 (ILR),并报告了晕厥复发的随访数据。我们评估了 ILR 记录的 >3 秒的心搏停止性晕厥或 >6 秒的非晕厥心搏停止的存在,并将结果与同一患者的倾斜测试结果进行了比较。共有 1,046 名患者因不明原因晕厥接受了 ILR。其中,201 名 (19.2%) 记录了持续 10 秒(Q1-Q3:6 至 15 秒)的心搏停止事件。他们被细分为 3 个年龄三分位数:≤60 岁(n = 64)、61 至 72 岁(n = 72)和≥73 岁(n = 65)。 3 个亚组的心搏停止事件发生率相似(分别为 50.1%、50.1% 和 49.2%;= 0.99)。相反,HUT 期间(201 例中的 169 例进行)期间诱发的心搏性晕厥发生率很大程度上取决于年龄(年龄增长三分位数分别为 31.0%、12.1% 和 11.1%;= 0.009)。 ILR 记录的自发性心脏停搏形式 RS 的发生率在任何年龄 > 40 岁的情况下都是恒定的。相反,HUT 引起的心脏停搏性晕厥的发生率在年轻患者中较高,并随着年龄的增长而降低。自发事件和倾斜诱发事件之间的对比结果使人们对老年患者中 RS 心搏停止不太常见的概念产生了怀疑。
更新日期:2024-01-17
中文翻译:

心搏反射性晕厥发生率不受年龄影响
平视倾斜试验(HUT)和其他证据表明,迷走神经对心脏的影响随着年龄的增长而减弱。该研究的主要目的是评估这种年龄效应是否也会影响自发反射性晕厥(RS)的心搏停止率。我们对 4 项研究的汇总个体数据进行了分析,这些研究招募了年龄≥40 岁、受某些或疑似 RS 影响的患者,这些患者接受了植入式循环记录仪 (ILR),并报告了晕厥复发的随访数据。我们评估了 ILR 记录的 >3 秒的心搏停止性晕厥或 >6 秒的非晕厥心搏停止的存在,并将结果与同一患者的倾斜测试结果进行了比较。共有 1,046 名患者因不明原因晕厥接受了 ILR。其中,201 名 (19.2%) 记录了持续 10 秒(Q1-Q3:6 至 15 秒)的心搏停止事件。他们被细分为 3 个年龄三分位数:≤60 岁(n = 64)、61 至 72 岁(n = 72)和≥73 岁(n = 65)。 3 个亚组的心搏停止事件发生率相似(分别为 50.1%、50.1% 和 49.2%;= 0.99)。相反,HUT 期间(201 例中的 169 例进行)期间诱发的心搏性晕厥发生率很大程度上取决于年龄(年龄增长三分位数分别为 31.0%、12.1% 和 11.1%;= 0.009)。 ILR 记录的自发性心脏停搏形式 RS 的发生率在任何年龄 > 40 岁的情况下都是恒定的。相反,HUT 引起的心脏停搏性晕厥的发生率在年轻患者中较高,并随着年龄的增长而降低。自发事件和倾斜诱发事件之间的对比结果使人们对老年患者中 RS 心搏停止不太常见的概念产生了怀疑。