CAJ | 학술논문

目的评价实时三维超声心动图在人工腱索植入行二尖瓣成形术中的应用价值.方法 31例二尖瓣脱垂病人,采用4-0 Goretex线为材料构建人工腱索行二尖瓣成形术,在术前、术中和术后分别行实时三维超声心动图检查.术前测量病人的正常腱索长度,通常测量二尖瓣前叶A1节段和后叶P1节段的腱索长度,以指导手术方案的制定.术中和术后采用实时三维超声检查以评价手术治疗效果.术中所有病人均同时植入人工二尖瓣成形环.结果无手术死亡病例,体外循环(142.0±31.2)min、主动脉阻断(98.0±22.5)min.每例病人植入人工腱索1～3根,平均(2.0±1.5)根.术前三维超声测量的人工腱索的预期长度平均为(21.0±2.5)mm,术中实际植入的人工腱索的长度平均为(20.0±2.2)mm,二者比较差异无统计学意义.随访3～30个月,随访率98%.出现轻微反流15例,轻度反流1例,中度反流1例,无需再次手术治疗病例.未发现Goretex线人工腱索断裂,无后期死亡.结论人工腱索植入二尖瓣成形术可获得良好的近、中期效果,实时三维超声可准确预测人工腱索的长度,对提高手术效果有重要帮助.
목적 평개실시삼유초성심동도재인공건색식입행이첨판성형술중적응용개치.방법 31례이첨판탈수병인,채용4-0 Goretex선위재료구건인공건색행이첨판성형술,재술전、술중화술후분별행실시삼유초성심동도검사.술전측량병인적정상건색장도,통상측량이첨판전협A1절단화후협P1절단적건색장도,이지도수술방안적제정.술중화술후채용실시삼유초성검사이평개수술치료효과.술중소유병인균동시식입인공이첨판성형배.결과 무수술사망병례,체외순배(142.0±31.2)min、주동맥조단(98.0±22.5)min.매례병인식입인공건색1～3근,평균(2.0±1.5)근.술전삼유초성측량적인공건색적예기장도평균위(21.0±2.5)mm,술중실제식입적인공건색적장도평균위(20.0±2.2)mm,이자비교차이무통계학의의.수방3～30개월,수방솔98%.출현경미반류15례,경도반류1례,중도반류1례,무수재차수술치료병례.미발현Goretex선인공건색단렬,무후기사망.결론 인공건색식입이첨판성형술가획득량호적근、중기효과,실시삼유초성가준학예측인공건색적장도,대제고수술효과유중요방조.
Objective To investigate the surgical technique and outcomes of replacement of chordae tendineae in mitral valve repair, and evaluate the value of real-time three-dimensional transesophageal echocardiography in the perioperative period. Methods Thirty-one patients with mitral valve prolapse underwent mitral valve repair using chordae tendineae replacement concomitant with implantation of valveplasty ring. A 4-0 Goretex sutures was used for reconstruction of artificial chordae. Realtime three-dimensional transesophageal echocardiography was performed in all the patients during the preoperative, intraoperatire, and postoperative periods. The length of the chordae tendineae under the A1 section of the anterior leaflet and the P1 section of the posterior leaflet were measured and considered the normal length of chordae tendineae by real-time three-dimensional transesophageal echocardiography preoperatively. These pre-determined normal chordal lengths helped intraoperatively to approximate the length of the artificial chordae used and postoperatively to gauge the success of the procedures. The same values were used again postoperatively to gauge the success of intervention. Full flexible valveplasty rings were used in all the patients.Results There was no operative death. The mean cardiopulmonary bypass (CPB) and aortic cross clamp time were ( 142. 0 ±31.2 ) min and (98.0 ± 22.5 ) min, respectively. One patient' s intraoperative echocardiography upon termination of CPB showed persistent severe mitral regurgitation and was converted to mitral valve replacement. This patient was not included in the study group. The mean number of artificial chordae per patient was (2.0 ± 1.5 ) , range from 1 to 3. The mean preoperatively measured normal chordal length was ( 21.0 ± 2.5 ) mm, and the mean postoperative artificial chordal length was ( 20.0 ± 2.2 )mm. The difference was not significant. The follow-up interval was from 3 to 30 months and the follow-up rate was 98%. During the follow-up period, there was no late death. Trace mitral regurgitation (MR) was detected in 15 patients, mild and moderate MR were detected in 1 for each. No severe MR was detected. The freedom from reoperation was 100% during follow-up.There were no documented artificial chordae ruptures. Conclusion Conclusion Artificial chordal replacement with Gore-tex suture in mitral valve repair in this group of patients with mitral valve prolapse appears to have satisfactory early and mid-term results. Real-time three-dimensional transesophageal echocardiography plays a critical role in this technique. Real-time threedimensional transesophageal echocardiography can exactly predict the length of artificial chordae, which is helpful to improve the outcomes of mitral valve repair. However, longer term follow-up and larger series are required to validate our findings.