CAJ | 학술논문

目的：观察右室心尖部起搏患者起搏 QRS 波时限（pQRSd）对心功能的影响。方法：将76例因Ⅲ度房室阻滞而安装起搏器的患者根据起搏 QRS 波时限把患者分为 A 组（pQRSd ＜190 ms， n ＝52）、B 组（pQRSd≥190 ms， n ＝24），术前及术后12、24个月检测血浆脑钠肽（BNP）及行心脏多普勒超声检查（LAD、LVEED、LVESD、LVEF），以心衰事件为终点事件，并进行比较。结果：术后12个月，与 A 组比较，B 组 LVEF 明显降低（P ＜0．05），两组间 LAD、LVEDD、LVESD、血 BNP 无明显差异，术后24个月，与 A 组比较，B 组的 LAD、LVSED、LVDED 明显增高（P ＜0．05），血 BNP 明显增高（P ＜0．001），LVEF 明显降低（P ＜0．001），整个随访期间，B 组比 A 组心衰再入院率高，但差异无统计学意义。结论：右室心尖部 pQRSd 的延长可致心脏功能的受损。
목적：관찰우실심첨부기박환자기박 QRS 파시한（pQRSd）대심공능적영향。방법：장76례인Ⅲ도방실조체이안장기박기적환자근거기박 QRS 파시한파환자분위 A 조（pQRSd ＜190 ms， n ＝52）、B 조（pQRSd≥190 ms， n ＝24），술전급술후12、24개월검측혈장뇌납태（BNP）급행심장다보륵초성검사（LAD、LVEED、LVESD、LVEF），이심쇠사건위종점사건，병진행비교。결과：술후12개월，여 A 조비교，B 조 LVEF 명현강저（P ＜0．05），량조간 LAD、LVEDD、LVESD、혈 BNP 무명현차이，술후24개월，여 A 조비교，B 조적 LAD、LVSED、LVDED 명현증고（P ＜0．05），혈 BNP 명현증고（P ＜0．001），LVEF 명현강저（P ＜0．001），정개수방기간，B 조비 A 조심쇠재입원솔고，단차이무통계학의의。결론：우실심첨부 pQRSd 적연장가치심장공능적수손。
Objective To investigate the impact of paced QRS duration (pQRSd) on heart function in patients with right ventricular apical pacing. Methods Seventy-six patients with Ⅲ° atrioventricular block received pacemaker treatment were enrolled and randomized into group A (pQRSd < 190 ms, n = 52) and group B(pQRSd≥ 190 ms, n = 24). The concentration of brain natriuretic peptide (BNP),parameters of left atrial diameter (LAD), left ventricular ejection fracetion (LVEF), left ventricular end diastolic diameter (LVEDD), left ventricular end systolic dimension (LVEDD) were measured before operation, at 12 months and 24 months after implanting, respectively. The parameters of echocardiography assay, the concentration of BNP and the incidence of heart failure event after implantation were compared between two groups. Results At 12 months after implanting, LVEF of the patients in the group B decreased significantly compared with that of group A (P < 0.05). However, the echocardiography paramenters and the concentration of BNP were not significantly different between the two groups (P > 0.05). At 24 months after implanting, LAD、LVEDD、LVESD of group B increased significantly compared with those of group A [LAD,( 44.5 ± 6.2) mm vs (41.6 ± 5.1) mm, LVEDD, (52.7 ± 9.3) mm vs (48.2 ± 7.5) mm, LVESD, (37.5 ± 5.6) mm vs (33.8 ± 4.9)mm, each P < 0.05, respectively]. The concentration of BNP of group B increased significantly [(408.2 ± 102.1)ng / L vs (243.7 ± 92.8)ng / L, P < 0.001], and LVEF of the patients in group B decreased significantly compared with those of group A [(46.3 ± 6.8)% vs (51.6 ± 5.2)%, P < 0.001], respectively. No significant difference in the incidence of heart failure event (41.7% vs 26.9%, P > 0.05)between two groups during 24-month follow-up. Conclusion The prolonged paced QRS duration has a detrimental effect on long-term cardiac function during RVA pacing in patients with Ⅲ°atrioventricular block.