在非侵入式自动设备和二维心声回声学之间的怀孕期间心脏指数的比较:一项纵向研究
Piya Chaemsaithong1, Man Yan Chung1, Qian Sun1
1Department of Obstetrics and Gynaecology, Prince of Wales Hospital, The Chinese University of Hong Kong, Shatin, Hong Kong.
概括
非侵入性心脏输出监测器 (NICOM) 低估了中国孕妇的心脏指数,而不是2D-transthoracic心声学. 平均百分比差异超过30%,表明潜在的临床限制.
科学领域:
- 心脏病学 心脏病学
- 孕产妇和胎儿医学 孕产妇和胎儿医学
- 生物医学工程 生物医学工程
背景情况:
- 准确监测心脏输出在怀孕期间至关重要.
- 对于重复评估,非侵入性方法是可取的.
- 与已确定的方法对非侵入性设备的验证是必不可少的.
研究的目的:
- 评估NICOM与2D-transthoracic心声学 (2D-TTE) 之间的协议,以测量心脏指数.
- 评估中国孕妇不同妊娠年龄之间的相关性,偏差和精度.
- 为了确定NICOM在这个人群中的临床适用性.
主要方法:
- 展望纵向研究涉及152-103名孕妇,跨越四个妊娠期.
- 使用NICOM和2D-TTE同时测量心脏输出 (CO),中风体积 (SV),SV指数 (SVI) 和心脏指数 (CI).
- 统计分析包括相关系数,偏差,精度,平均百分比差异和95%的协议极限.
主要成果:
- 在第一季度观察到VS和SVI的中等相关性 (r=0.2-0.3).
- 尼科姆显示SV (-12.1毫升) 和SVI (-6.1毫升/米2) 的整体偏差.
- 所有心脏指数的平均百分比差异超过了30%,超过了临床上可接受的极限.
结论:
- 与2D-TTE相比,NICOM低估了中国孕妇的心脏指数.
- 观察到的平均百分比差异表明,NICOM可能在这个人群中不符合临床准确性标准.
- 需要进一步的研究来探索在中国孕妇中对NICOM的潜在算法调整.
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