Table 3 Comparison of various conventional echocardiographic indexes.

From: Assessment of pit viper associated subclinical myocardial injury by speckle tracking imaging

Characteristics

Healthy Controls(n = 34)

Snakebite patients(n = 37)

Z/t

p

Mild group(n = 25)

Moderate group(n = 7)

Severe group(n = 5)

H

p

E/A

1.110

(0.8,1.3)

0.870

(0.8,1.3)

 − 0.840

0.401

0.910

(0.7,1.4)

0.850

(0.8,0.9)

1.120

(0.6,1.4)

0.488

0.784

E/e’

8.620

(7.1,10.3)

9.480

(8.1,11.4)

 − 1.571

0.116

9.100

(7.5,11.1)

10.880

(8.9,13.0)

9.870

(8.5,11.7)

1.828

0.401

Tei index

0.420

(0.4,0.5)

0.501

(0.5,0.6)

 − 3.293

0.001

0.483

(0.4,0.6)

0.501

(0.5,0.6)

0.533

(0.5,0.5)

0.540

0.763

LVEDV

(ml)

47.400

(37.2,59.5)

48.000

(41.0,55.3)

 − 0.610

0.542

48.000

(41.0,59.3)

52.700

(46.8,62.8)

43.800

(35.2,51.1)

1.978

0.372

LVESV

(ml)

18.400

(12.6,21.1)

16.300

(11.8,20.1)

 − 0.804

0.422

17.200

(13.8,21.0)

17.200

(10.5,21.0)

11.500

(11.1,17.4)

2.040

0.361

SV

(ml)

29.600

(24.8,39.9)

32.600

(27.7,38.5)

 − 0.560

0.576

32.700

(26.3,38.0)

37.700

(29.9,45.6)

28.400

(23.9,35.9)

2.057

0.358

CO

(l/min)

2.600

(1.8,2.8)

2.100

(2.0,2.8)

 − 0.633

0.527

2.100

(1.9,2.4)

2.800

(2.2,3.5)

2.000

(1.8,2.8)

3.959

0.138

FS(%)

37.12 ± 3.99

37.03 ± 4.55

0.006

0.936

35.900

(34.1,39.8)

39.200

(33.3,44.0)

34.100

(31.3,41.5)

1.181

0.554

EF(%)

64.900

(61.4,67.7)

65.700

(61.6,71.3)

 − 0.883

0.377

65.000

(61.0,70.9)

69.500

(61.5,72.6)

70.800

(62.0,72.9)

1.327

0.515

  1. Data are expressed as the Median (P25, P75). LVEDV, left ventricular end-diastolic volume; LVESV, left ventricular end-systolic volume; SV, stroke volume; CO, cardiac output; FS, fractional shortening; EF, ejection fraction. p < 0.05, which is statistically significant.