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Table 3 Difference in myocardial velocities before and after intrauterine transfusion (n = 66). Absolute values and z-scores

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

Variable LV IVS RV
Median b
(IQ)
Median b z-score
(IQ)
Median b
(IQ)
Median b z-score
(IQ)
Median b
(IQ)
Median b z-score
(IQ)
(cm/sec)   (cm/sec)   (cm/sec)  
Myocardial velocities
 Am −1.03 (1.52) −0.75a (1.54) − 0.62 (1.41) − 0.61a (1.29) −0.47 (2.36) − 0.40 (1.73)
 Sm −0.52 (1.13) − 0.62a (1.30) −0.49 (0.64) − 0.97a (1.18) −0.45 (1.23) − 0.49a (1.45)
 Em −0.41 (1.08) − 0.38a (1.12) −0.34 (1.14) − 0.34a (1.16) −0.11 (2.00) − 0.13 (1.61)
 Em/Am ratio + 0.23 (0.55) + 0.58a (1.43) + 0.05 (0.50) + 0.19 (1.55) + 0.002 (0.32) + 0.01 (1.35)
  1. Values are presented as absolute values and z-scores created from published reference data
  2. aindicates significance according to Wilcoxon signed rank test for related samples p < 0.01
  3. LV, left ventricular wall; IVS, interventricular septum; RV, right ventricular wall
  4. b, difference between measurement after minus before IUT; IQ; interquartile range
  5. Am, peak myocardial velocity during atrial contraction; Sm, peak myocardial velocity during ventricular ejection; Em, peak myocardial velocity during rapid ventricular filling