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Table 1 Cardiovascular MRI assessment

From: Changes in overall ventricular myocardial architecture in the setting of a porcine animal model of right ventricular dilation

 

PI

Control

P value

Morphometric indices

 Number of animals

7

7

 

 Weight (kg)

21.9 (16–29)

23.7 (20–27)

NS

 Body surface area (m2)

0.56 (0.46–0.67)

0.58 (0.52–0.63)

NS

 Heart rate (bpm)

78 (57–106)

72 (57–116)

NS

Left ventricular indices

 EDV (ml/m2)

66 (57–81)

71 (57–82)

NS

 ESV (ml/m2)

33 (22–38)

28 (23–46)

NS

 Stroke volume (ml/m2)

36 (28–49)

38 (26–50)

NS

 Ejection fraction (%)

53 (48–60)

57 (45–65)

NS

 Cardiac index (l/min/m2)

2.5 (1.5–4.4)

2.6 (2.2–3.3)

NS

 LV SL/AP ratio, systole

1.04 (0.89–1.15)

1.05 (1.03–1.13)

NS

 LV SL/AP ratio, diastole

0.98 (0.89–1.16)

0.98 (0.91–1.03)

NS

 In-vivo wall thickness, systole (mm)

10.7 (10.3–12.6)

11.6 (9.6–13.4)

NS

 In-vivo wall thickness, diastole (mm)

7.4 (6.9–8)

7.4 (6.6–8.7)

NS

 Ex-vivo wall thickness, diastole (mm)

6.7 (5.1–8.3)

6.6 (5.8–7.5)

NS

Right ventricular indices

 RVEDV (ml/m2)

86 (70–116)

53 (48–76)

0.006

 RVESV (ml/m2)

40 (36–54)

27 (20–40)

0.01

 RV ejection fraction (%)

48 (41–73)

50 (38–55)

NS

 RV regurgitation volume (ml/m2)

12.6 (4.2–19.6)

0.34 (0.12–0.62)

0.002

 RV regurgitation fraction (%)

39 (17–44)

1.5 (0.3–2.9)

0.002

 Ventricular length, systole (mm)

63 (58–77)

64 (53–70)

NS

 Ventricular length, diastole (mm)

75 (68–80)

75 (68–89)

NS

 Septum-lateral distance, systole (mm)

21 (16–28)

18 (14–24)

NS

 Septum-lateral distance, diastole (mm)

29 (27–32)

26 (19–29)

0.01

 Ex-vivo wall thickness, diastole (mm)

3.7 (3.2–4.2)

3.4 (2.6–4.2)

NS

  1. Data presented as medians (interquartile range). Medians compared using Wilcoxon Ranksum Test
  2. PI pulmonary insufficiency, NS statistically nonsignificant, EDV end-diastolic volume, ESV end-systolic volume, RVEDV right ventricular end-diastolic volume, RVESV right ventricular end-systolic volume, RV right ventricle, LV SL/AP left ventricular septum-lateral versus anterior-posterior ratio