4 research outputs found

    高密度高分辨标测下外科术后房性心动过速的电生理特征

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    目的观察在高密度、高分辨率视觉下的心外科术后房性心动过速(房速)的电生理特点及消融效果。方法回顾分析自2016年3月至2019年12月在中山大学附属第一医院因心外科术后房速,应用Orion微电极网蓝与Rhythmia 标测系统进行标测消融治疗的全部患者。结果共入选21名患者,总共记录到26种房速,平均每种房速的标测时间为(19.1±7.1) min,所采取的电图(19 495±12 798)个。26种房速中,按部位分:20(76.9%)个位于右房,5(19.2%)个位于左房,1(3.8%)个为左右双房大折返;按心动过速机制分:24(92.3%)个为大折返房速,1(3.8%)个为微折返,1(3.8%)个为局灶房速。在大折返房速中,7个为双环“8”字折返,消融一环过程中有4个转为单环折返。另有一例为跨房间隔传导的双房大折返。21例患者2例复发,其中1例当时仅对游离壁疤痕至下腔静脉的连线进行消融,后再次手术时标测为三尖瓣峡部依赖性房速。结论心外科术后房速形式多样,以大折返房速为主,极少数为微折返或局灶起源。大折返房速可表现为双环折返或双房大折返。消融时除针对本次心动过速外,还需根据心房的基质情况进行预防性干预

    Amplitude analysis of the decays D0π+ππ+πD^0\rightarrow\pi^+\pi^-\pi^+\pi^- and D0π+ππ0π0D^0\rightarrow\pi^+\pi^-\pi^0\pi0

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    Measurement of integrated luminosity of data collected at 3.773 GeV by BESIII from 2021 to 2024*

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    Determination of the number of ψ(3686) events taken at BESIII

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    The number of ψ(3686) events collected by the BESIII detector during the 2021 run period is determined to be (2259.3±11.1)×106 by counting inclusive ψ(3686) hadronic events. The uncertainty is systematic and the statistical uncertainty is negligible. Meanwhile, the numbers of ψ(3686) events collected during the 2009 and 2012 run periods are updated to be (107.7±0.6)×106 and (345.4±2.6)×106, respectively. Both numbers are consistent with the previous measurements within one standard deviation. The total number of ψ(3686) events in the three data samples is (2712.4±14.3)×10^
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