目的探讨左束支区域起搏(left bundle branch area pacing,LBBaP)对房室传导阻滞(AVB)患者术后新发心房颤动(new-onset atrial fibrillation,NOAF)和心房高频事件(atrial high rate episodes,AHREs)的影响。方法回顾性纳入84例行起搏治...目的探讨左束支区域起搏(left bundle branch area pacing,LBBaP)对房室传导阻滞(AVB)患者术后新发心房颤动(new-onset atrial fibrillation,NOAF)和心房高频事件(atrial high rate episodes,AHREs)的影响。方法回顾性纳入84例行起搏治疗的三度房室传导阻滞(ⅢAVB)患者,根据心室电极位置分为LBBaP组(n=42)和右室间隔部起搏(RVSP)组(n=42)。比较两组患者术前术后QRS波时限(QRSd)、心室起搏参数,并发症、脑卒中事件和NOAF、AHREs发生率。结果(1)LBBaP组术后NOAF、AHREs发生率均低于RVSP组(P<0.05)。(2)LBBaP组的p-QRSd短于RVSP组(P<0.05)。(3)两组患者心室起搏参数、并发症及脑卒中事件发生率之间差异无统计学意义(P>0.05)。结论相对于右室起搏,LBBaP术后AHREs、NOAF的发生率较低,可改善患者预后。展开更多
目的探讨房颤二代冷冻球囊消融(cryoballoon ablation,CBA)术后复发与围手术期房性快速性心律失常(atrial tachyarrhythmia,AT)和心肌肌钙蛋白I(cTnI)的相关关系。方法选取45例接受CBA治疗的房颤患者,根据消融空白期(3个月)后是否出现A...目的探讨房颤二代冷冻球囊消融(cryoballoon ablation,CBA)术后复发与围手术期房性快速性心律失常(atrial tachyarrhythmia,AT)和心肌肌钙蛋白I(cTnI)的相关关系。方法选取45例接受CBA治疗的房颤患者,根据消融空白期(3个月)后是否出现AT分为复发组和非复发组。对比分析两组患者的临床资料、实验室检查结果、手术参数、并发症和随访资料。结果①术后平均随访(14.3±3.7)个月,非复发组仍有31例患者维持窦性心律,复发组有14例患者房颤复发,成功率68.9%;非复发组和复发组分别有5例(16.1%)和10例(71.4%)发生围手术期AT,且差异有统计学意义(P<0.01),但二元Logistic回归分析表明,围手术期AT与房颤术后复发无明显相关性(OR=5.95,P>0.05)。②术后6 h cTnI复发组低于非复发组[(7.4±1.9)ng/mL vs.(11.8±3.1)ng/mL,P<0.01],且回归分析提示术后6 h cTnI与术后房颤复发具有相关性(OR=0.56,P=0.034)。③亚组分析发现,CBA术后在12例持续性房颤和33例阵发性房颤患者中,分别有5例(41.7%)和9例(27.3%)复发,且差异无统计学意义(P>0.05)。结论CBA治疗阵发性和持续性房颤均安全有效。术后cTnI水平监测有助于快速预测CBA术后房颤的复发,并为二次消融提供临床依据。展开更多
An attempt was made to prepare carbon coated tourmaline by mixing tourmaline powders and polyvinyl alcohol (PVA), followed by heat treatment in argon atmosphere. All samples were characterized by powder X-ray diffract...An attempt was made to prepare carbon coated tourmaline by mixing tourmaline powders and polyvinyl alcohol (PVA), followed by heat treatment in argon atmosphere. All samples were characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, UV diffuse reflectance spectroscopy. Results showed that the residual carbon content was influenced by heat treatment temperature and the amount of PVA. The degradation of methylene blue by Carbon-coated tourmaline was also studied. The experiments pointed out that the carbon coated effects are best when the heating temperature was 900℃ and the weight content of PVA was 70%. And the tourmaline prepared under 900℃ in the oxidation atmosphere has the best degrade efficiency. The results also proved that the infrared radiation of tourmaline is not effect in the degrade progress.展开更多
文摘目的探讨左束支区域起搏(left bundle branch area pacing,LBBaP)对房室传导阻滞(AVB)患者术后新发心房颤动(new-onset atrial fibrillation,NOAF)和心房高频事件(atrial high rate episodes,AHREs)的影响。方法回顾性纳入84例行起搏治疗的三度房室传导阻滞(ⅢAVB)患者,根据心室电极位置分为LBBaP组(n=42)和右室间隔部起搏(RVSP)组(n=42)。比较两组患者术前术后QRS波时限(QRSd)、心室起搏参数,并发症、脑卒中事件和NOAF、AHREs发生率。结果(1)LBBaP组术后NOAF、AHREs发生率均低于RVSP组(P<0.05)。(2)LBBaP组的p-QRSd短于RVSP组(P<0.05)。(3)两组患者心室起搏参数、并发症及脑卒中事件发生率之间差异无统计学意义(P>0.05)。结论相对于右室起搏,LBBaP术后AHREs、NOAF的发生率较低,可改善患者预后。
文摘目的探讨房颤二代冷冻球囊消融(cryoballoon ablation,CBA)术后复发与围手术期房性快速性心律失常(atrial tachyarrhythmia,AT)和心肌肌钙蛋白I(cTnI)的相关关系。方法选取45例接受CBA治疗的房颤患者,根据消融空白期(3个月)后是否出现AT分为复发组和非复发组。对比分析两组患者的临床资料、实验室检查结果、手术参数、并发症和随访资料。结果①术后平均随访(14.3±3.7)个月,非复发组仍有31例患者维持窦性心律,复发组有14例患者房颤复发,成功率68.9%;非复发组和复发组分别有5例(16.1%)和10例(71.4%)发生围手术期AT,且差异有统计学意义(P<0.01),但二元Logistic回归分析表明,围手术期AT与房颤术后复发无明显相关性(OR=5.95,P>0.05)。②术后6 h cTnI复发组低于非复发组[(7.4±1.9)ng/mL vs.(11.8±3.1)ng/mL,P<0.01],且回归分析提示术后6 h cTnI与术后房颤复发具有相关性(OR=0.56,P=0.034)。③亚组分析发现,CBA术后在12例持续性房颤和33例阵发性房颤患者中,分别有5例(41.7%)和9例(27.3%)复发,且差异无统计学意义(P>0.05)。结论CBA治疗阵发性和持续性房颤均安全有效。术后cTnI水平监测有助于快速预测CBA术后房颤的复发,并为二次消融提供临床依据。
文摘An attempt was made to prepare carbon coated tourmaline by mixing tourmaline powders and polyvinyl alcohol (PVA), followed by heat treatment in argon atmosphere. All samples were characterized by powder X-ray diffraction, high-resolution transmission electron microscopy, UV diffuse reflectance spectroscopy. Results showed that the residual carbon content was influenced by heat treatment temperature and the amount of PVA. The degradation of methylene blue by Carbon-coated tourmaline was also studied. The experiments pointed out that the carbon coated effects are best when the heating temperature was 900℃ and the weight content of PVA was 70%. And the tourmaline prepared under 900℃ in the oxidation atmosphere has the best degrade efficiency. The results also proved that the infrared radiation of tourmaline is not effect in the degrade progress.
