Table 4: Comparison between patients with prolonged and those with normal QTd as regards age and laboratory data.

Normal QTd (11)Prolonged QT (19)t P
Mean+SDMean+SD

Age in years9.862.299.432.200.510.614
RBS (mg/dL)401.2735.54407.8934.441.210.54
PH7.170.067.050.103.670.001
S.K (mEq/L)3.690.183.440.121.190.54
S.ca (mg/dL)9.440.119.470.161.250.30
S.Mg (mg/dL)2.510.202.580.291.370.32
S. creatinine (mg/dL)0.810.130.970.391.290.21
Anion gap 11.920.1712.440.133.750.001