Background: Functional mitral regurgitation (FMR) is an increasing burden as population ages. Mitral valve repair (MVr) is the preferred surgical treatment of FMR despite limited evidence supporting its efficacy. Mitr...Background: Functional mitral regurgitation (FMR) is an increasing burden as population ages. Mitral valve repair (MVr) is the preferred surgical treatment of FMR despite limited evidence supporting its efficacy. Mitral valve replacement (MVR) is the alternative procedure typically reserved for patients who are at higher risk or refractory to MVr. The present study aims to determine which of the two procedures is more effective in the surgical treatment of FMR. Methods: 344 charts of FMR patients who received either MVr (n = 263) or MVR (n = 81) from 2004-2016 at our institution were reviewed. Treatment efficacy was assessed based on heart failure (HF)-readmission and survival rates within 5 years from discharge. Propensity score approach with inverse probability weighting and Cox regression models were employed to evaluate procedural impact on survival and rehospitalizations, respectively. Follow-up echocardiographic data from the original cohort was assessed for differences in metrics between procedural groups at >6 months (MVr: n = 75;MVR: n = 23) and 1 year (MVr: n = 75;MVR: n = 18) post-op. Results: MVR patients had a lower risk of being readmitted for HF within 5 years compared to the MVr group (HR-adj (95% CI): 0.60 (0.41 - 0.88), p = 0.008). MVR patients also had a higher overall risk of death (HR-adj (95% CI): 1.82 (1.05 - 3.16), p = 0.034) but this was borderline significantly different at 5 years cut-off (p = 0.057). Conclusions: Higher HF readmission in MVr patients than in sicker, higher surgical-risk MVR patients reflects the inadequacy of MVr to treat FMR. Novel approaches to MVR may be necessary to adequately manage FMR.展开更多
目的二尖瓣成形术被广泛应用于先天性及继发性二尖瓣病变的手术治疗中。文中探讨二尖瓣成形术后并发机械性溶血的机制及治疗策略。方法回顾性分析2010年8月至2018年6月解放军南部战区总医院行二尖瓣成形术(含房室管畸形病例)451例患者...目的二尖瓣成形术被广泛应用于先天性及继发性二尖瓣病变的手术治疗中。文中探讨二尖瓣成形术后并发机械性溶血的机制及治疗策略。方法回顾性分析2010年8月至2018年6月解放军南部战区总医院行二尖瓣成形术(含房室管畸形病例)451例患者临床资料。其中16例(3.5%)术后出现机械性溶血(血红蛋白尿、黄疸、贫血),心脏超声检查显示二尖瓣少量返流3例、中量返流9例、大量返流4例,其中12例二尖瓣返流束为高流速(Vmax>4m/s)。根据溶血治疗策略将患者分为2组:再手术组(n=10)确诊溶血后1周内接受再次二尖瓣成形术;保守治疗组(n=6)予以血液透析、输血、利尿、碱化尿液、护肝、口服美托洛尔等对症治疗。所有患者接受随访2～36个月,平均(16.0±7.5)个月,对比患者术后心脏超声结果、溶血症状改善程度、心功能水平等。结果两组术后均无死亡病例。再手术组全部患者症状迅速消退,痊愈出院;保守治疗组4例患者因治疗效果不佳于术后3～11周接受再次手术治疗(行二尖瓣成形1例、二尖瓣机械瓣膜置换3例),术后痊愈出院,另外2例患者长期保守治疗。接受再次手术患者心功能维持在I～II级,复查心脏超声显示二尖瓣微量返流10例,少-中量返流3例,无机械性溶血复发;2例长期保守治疗患者,轻中度贫血,尿胆原1+～2+,二尖瓣返流中量,心功能II级,处于亚临床溶血状态。再手术组患者治疗1周后血红蛋白水平、总胆红素水平、二尖瓣返流量均显著优于保守治疗组,差异有统计学意义(P<0.05);再手术组的再次干预发生情况(0 vs 66.7%)及溶血/亚临床溶血发生情况(0 vs 100%)均显著低于保守治疗组,差异有统计学意义(P<0.05)。结论机械性溶血多发生在二尖瓣成形术后早期,超声可发现具有高剪切力的二尖瓣残余返流,可结合临床血管内溶血症状进行诊断。手术是影响溶血的重要因素。术后�展开更多
文摘Background: Functional mitral regurgitation (FMR) is an increasing burden as population ages. Mitral valve repair (MVr) is the preferred surgical treatment of FMR despite limited evidence supporting its efficacy. Mitral valve replacement (MVR) is the alternative procedure typically reserved for patients who are at higher risk or refractory to MVr. The present study aims to determine which of the two procedures is more effective in the surgical treatment of FMR. Methods: 344 charts of FMR patients who received either MVr (n = 263) or MVR (n = 81) from 2004-2016 at our institution were reviewed. Treatment efficacy was assessed based on heart failure (HF)-readmission and survival rates within 5 years from discharge. Propensity score approach with inverse probability weighting and Cox regression models were employed to evaluate procedural impact on survival and rehospitalizations, respectively. Follow-up echocardiographic data from the original cohort was assessed for differences in metrics between procedural groups at >6 months (MVr: n = 75;MVR: n = 23) and 1 year (MVr: n = 75;MVR: n = 18) post-op. Results: MVR patients had a lower risk of being readmitted for HF within 5 years compared to the MVr group (HR-adj (95% CI): 0.60 (0.41 - 0.88), p = 0.008). MVR patients also had a higher overall risk of death (HR-adj (95% CI): 1.82 (1.05 - 3.16), p = 0.034) but this was borderline significantly different at 5 years cut-off (p = 0.057). Conclusions: Higher HF readmission in MVr patients than in sicker, higher surgical-risk MVR patients reflects the inadequacy of MVr to treat FMR. Novel approaches to MVR may be necessary to adequately manage FMR.
文摘目的二尖瓣成形术被广泛应用于先天性及继发性二尖瓣病变的手术治疗中。文中探讨二尖瓣成形术后并发机械性溶血的机制及治疗策略。方法回顾性分析2010年8月至2018年6月解放军南部战区总医院行二尖瓣成形术(含房室管畸形病例)451例患者临床资料。其中16例(3.5%)术后出现机械性溶血(血红蛋白尿、黄疸、贫血),心脏超声检查显示二尖瓣少量返流3例、中量返流9例、大量返流4例,其中12例二尖瓣返流束为高流速(Vmax>4m/s)。根据溶血治疗策略将患者分为2组:再手术组(n=10)确诊溶血后1周内接受再次二尖瓣成形术;保守治疗组(n=6)予以血液透析、输血、利尿、碱化尿液、护肝、口服美托洛尔等对症治疗。所有患者接受随访2～36个月,平均(16.0±7.5)个月,对比患者术后心脏超声结果、溶血症状改善程度、心功能水平等。结果两组术后均无死亡病例。再手术组全部患者症状迅速消退,痊愈出院;保守治疗组4例患者因治疗效果不佳于术后3～11周接受再次手术治疗(行二尖瓣成形1例、二尖瓣机械瓣膜置换3例),术后痊愈出院,另外2例患者长期保守治疗。接受再次手术患者心功能维持在I～II级,复查心脏超声显示二尖瓣微量返流10例,少-中量返流3例,无机械性溶血复发;2例长期保守治疗患者,轻中度贫血,尿胆原1+～2+,二尖瓣返流中量,心功能II级,处于亚临床溶血状态。再手术组患者治疗1周后血红蛋白水平、总胆红素水平、二尖瓣返流量均显著优于保守治疗组,差异有统计学意义(P<0.05);再手术组的再次干预发生情况(0 vs 66.7%)及溶血/亚临床溶血发生情况(0 vs 100%)均显著低于保守治疗组,差异有统计学意义(P<0.05)。结论机械性溶血多发生在二尖瓣成形术后早期,超声可发现具有高剪切力的二尖瓣残余返流,可结合临床血管内溶血症状进行诊断。手术是影响溶血的重要因素。术后�
