Table 1 Pre- and post-paracetamol treatment echocardiography measurements.

From: The effect of patent ductus arteriosus treatment with paracetamol on pulmonary vascular resistance

 

Pre-treatment

Post-treatment

p

Heart rate

163 ± 17

167 ± 14

0.52

PDA characteristics

  PDA diameter (mm)

3.2 ± 0.8

3.0 ± 0.7

0.31

  PDA systolic:diastolic velocity ratio

5.6 [3.0–6.1]

3.6 [2.3–5.3]

0.06

  LA:Ao

2.1 ± 0.4

1.9 ± 0.4

0.14

  LV end diastolic diameter (mm)

15 ± 3

15 ± 3

0.97

  Descending aorta EDV (m/s)

−0.12 [−0.21 to −0.07]

0.13 [0.06–0.19]

<0.01

Myocardial function

  LV ejection fraction (%)

60 ± 9

59 ± 8

0.97

  RV fractional area change (%)

0.30 ± 0.11

0.29 ± 0.12

0.76

Surrogate PVR markers

  PAAT

44 ± 13

38 ± 9

0.10

  PAATi

0.34 ± 0.09

0.25 ± 0.04

<0.01

  LV Eccentricity Index

1.3 ± 0.1

1.4 ± 0.2

0.049

  1. Values are presented as means ±(SD), medians [IQR] or count (%).
  2. PDA Patent Ductus Arteriosus, LA:Ao Left atrial to aortic root ratio, LV left ventricle, EDV end diastolic velocity, RV right ventricle, PAATi Pulmonary Artery Acceleration Time indexed to heart rate.