Fetal cardiac function at intrauterine transfusion assessed by automated analysis of color tissue Doppler recordings

Table 2 Myocardial velocities before intrauterine transfusion (n = 70). Absolute values and z-scores

Variable	LV		IVS		RV
	Mean (±SD)	Mean z-score (95% CI)	Mean (±SD)	Mean z-score (95% CI)	Mean (±SD)	Mean z-score (95% CI)
	(cm/sec)		(cm/sec)		(cm/sec)
Myocardial velocities
Am	4.27 (±1.46)	0.31^a (0.06–0.56)	4.03 (±1.01)	0.28^a (0.08–0.48)	5.83 (±1.46)	0.12 (−0.16–0.40)
Sm	2.77 (±1.11)	0.34^a (0.08–0.61)	2.84 (±0.68)	0.52^a (0.28–0.77)	3.66 (±1.14)	0.30^a (0.03–0.57)
Em	3.55 (±1.19)	0.48^a (0.24–0.73)	3.38 (±0.96)	0.26^a (0.05–0.47)	4.20 (±1.28)	0.12 (−0.12–0.35)
Em/Am ratio	0.90 (±0.36)	0.20 (−0.05–0.44)	0.87 (±0.28)	−0.01 (− 0.21–0.18)	0.76 (±0.26)	0.09 (− 0.15–0.34)

Values are presented as absolute values and z-scores created from published reference data
^aindicates significance according to 95% confidence interval (CI)
LV, left ventricular wall; IVS, interventricular septum; RV, right ventricular wall; Am, peak myocardial velocity during atrial contraction; Sm, peak myocardial velocity during ventricular ejection; Em, peak myocardial velocity during rapid ventricular filling; SD, standard deviation

ISSN: 1476-7120