Crawford M H, Moody J M, O'Rourke R A, Detwiler J
Am Heart J. 1979 Jun;97(6):719-25. doi: 10.1016/0002-8703(79)90006-1.
In order to evaluate the reliability and reproducibility of the CKG we studied four groups of patients. In 27 patients with a prior myocardial infarction the CKG recordings were compared to simultaneous wall motion videotracking. Identical wall motion was recorded in 75% of left ventricular sites and most of the discordant sites were false abnormal posterior wall motion recorded by the CKG. The second group consisted of 21 normal subjects studied by CKG only and 35% displayed anterior dyskinesis during expiration. The third group consisted of nine stable patients who were studied on two separate days by CKG and identical wall motion was recorded in only 55% of the sites on the two recordings. The final group consisted of seven patients with mitral regurgitation and all had late systolic outward movement posteriorly. Systolic wall motion was normal postoperatively in the three patients who underwent valve replacement. We conclude that: (1) the usefulness of the CKG is limited by the frequent recording of false wall motion abnormalities in normal subjects, (2) false anterior wall motion abnormalities can be reduced by recording during inspiration, (3) false posterior wall motion abnormalities may be due to systolic left atrial expansion, and (4) cardioxymography recordings are often not reproducible.
为了评估心脏运动图（CKG）的可靠性和可重复性，我们研究了四组患者。在27例既往有心肌梗死的患者中，将CKG记录与同步室壁运动视频追踪进行比较。在75%的左心室部位记录到相同的室壁运动，大多数不一致的部位是CKG记录的后壁假异常运动。第二组由仅接受CKG检查的21名正常受试者组成，35%的受试者在呼气时出现前壁运动障碍。第三组由9例稳定患者组成，他们在两个不同的日子接受CKG检查，两次记录中只有55%的部位记录到相同的室壁运动。最后一组由7例二尖瓣反流患者组成，所有患者均有收缩晚期后壁向外运动。接受瓣膜置换的3例患者术后收缩期室壁运动正常。我们得出以下结论：（1）CKG的实用性受到正常受试者频繁记录到假室壁运动异常的限制；（2）通过吸气时记录可减少假前壁运动异常；（3）假后壁运动异常可能归因于收缩期左心房扩张；（4）心脏运动图记录往往不可重复。
