机构地区:[1]中国医学科学院北京协和医学院北京协和医院心内科,100730
出 处:《中国心血管杂志》2015年第2期105-109,共5页Chinese Journal of Cardiovascular Medicine
摘 要:目的 应用超声心动图的常规参数及二维斑点追踪成像评价心肌淀粉样变患者的左心室功能的改变。方法 入选2006年9月至2014年11月在北京协和医院住院期间诊断为心肌淀粉样变(CA)的患者50例,根据LVEF分为CA(LVEF〈50%)组(29例)和CA(LVEF≥50%)组(21例),以健康体检者41例为对照组。收集临床病历资料,进行超声心动图常规参数测定及二维斑点追踪成像分析。结果 CA(LVEF〈50%)组较CA(LVEF≥50%)组左心房收缩末内径[(43.72±4.89)mm比(37.43±6.82)mm,P〈0.01]、左心室舒张末内径[(45.10±6.23)mm比(39.33±4.12)mm,P〈0.01]、左心室收缩末容积[42(37~59)ml比17(14~24)ml,P〈0.01]和舒张末容积[72(63~106)ml比50(46~62)ml,P〈0.01]及脑钠肽水平[664(327~1 338)ng/L比308(179~461)ng/L,P=0.04]明显升高。CA(LVEF〈50%)组左心室整体收缩期纵向峰值应变(GLS)、径向峰值应变(GRS)以及圆周峰值应变(GCS)的绝对值小于CA(LVEF≥50%)组及健康对照组[GLS:(-8.46±3.94)比(-13.77±4.05)比(-19.77±2.65);GRS:(15.32±10.00)比(25.18±14.02)比(35.18±12.18);GCS:(-10.18±4.52)比(-18.09±6.56)比(-19.00±3.51);均为P〈0.05];CA(LVEF≥50%)组的GLS与GRS绝对值小于健康对照组(均为P〈0.05),而GCS与健康对照组差异无统计学意义(P=0.56)。结论 CA患者可逐渐出现左心室整体收缩功能异常及左心重构,二维斑点追踪成像表明LVEF正常的部分CA患者已存在心肌收缩功能减低。Objective To evaluate the left ventricular function of cardiac amyloidosis (A) patients using traditional echocardiography and two-dimensional speckle tracking imaging (2D-STI). Methods A total of 50 patients confirmed with CA in Peking Union Medical College Hospital during 2006 and 2014 and 41 healthy people as normal control were included. Based on left ventricular ejection function (LVEF), the CA patients were split into low LVEF group ( LVEF 〈 50% , n = 29) and normal LVEF group ( LVEF≥50% , n = 21). Their clinical information, echocardiographic routine parameters and global strains of LV by 2D-STI were analyzed. Results LADs[(43. 72 ± 4. 89) mm vs. (37. 43 ± 6. 82) mm, P 〈 0. 01], LVDd [(45. 10 ± 6. 23)mm vs. (39. 33 ± 4. 12)mm, P 〈 0. 01],LVEDV[72(63 - 106) ml vs. 50(46 -62)ml,P 〈 0. 01], LVESV [42 (37 - 59) ml vs. 17 (14 - 24) ml, P 〈 0. 01] and BNP [664 (327 -1 338)ng/ L vs. 308(179 - 461)ng/ L,P = 0. 04]were significantly higher in CA (LVEF 〈 50% ) group than in CA (LVEF≥50% ) group. The absolute values of global longitudinal strain (GLS), global radial strain (GRS) and global circumferential strain (GCS) were significantly lower in CA (LVEF 〈 50% ) group than in CA (LVEF≥50% ) group [GLS, ( - 8. 46 ± 3. 94) vs. ( - 13. 77 ± 4. 05); GRS,(15. 32 ± 10. 00) vs. (25. 18 ± 14. 02); GCS,( - 10. 18 ± 4. 52) vs. ( - 18. 09 ± 6. 56); all P 〈 0. 05]and control group[GLS, ( - 8. 46 ± 3. 94) vs. ( - 19. 77 ± 2. 65); GRS, (15. 32 ± 10. 00) vs. (35. 18 ± 12. 18); GCS, ( - 10. 18 ± 4. 52) vs. ( - 19. 00 ± 3. 51); all P 〈 0. 05]. The absolute values of GLS and GRS were significantly lower in CA (LVEF≥50% ) group than in control group [GLS,( - 13. 77 ± 4. 05) vs. ( - 19. 77 ± 2. 65);GRS, (25. 18 ± 14. 02) vs. (35. 18 ± 12. 18); all P 〈 0. 05], while GCS did not differ between the two groups( P = 0. 56) . C
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