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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