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. 2016 Mar 1;10(3):CC16–CC18. doi: 10.7860/JCDR/2016/17774.7507

[Table/Fig-3]:

Comparison of Mean±SD, significance & range of QRS duration, QT interval, QTc interval & QRS axis between control & study groups.

Parameter 2nd trimester 2nd trimester p-value
Control Group I Study Group II
Mean±SD Range Mean±SD
QRS duration 83.04±8.79 80-100ms 76.52±10.76 0.02 (S)
QT interval 365.04±24.89 320-360ms 350.32±17.44 0.06 (NS)
QTc interval 431.44±23.75 350-420ms 449.46±17.33 0.003 (HS)
QRS axis (in degrees) 46.44±16.24 22-82 44.36±21.21 0.7 (NS)
T axis (in degrees) 19.84±20. -33-54 21.40±18.20 0.78 (NS)

p>0.05: Not Significant(NS), *p: <0.05: Significant,

** p: <0.01: Highly significant, *** p: <0.001: Very highly significant.