Table 3

 Blood gas and serum magnesium measurements of the two study groups*†

0 min120 min‘p’ value
*Group A: nebulised magnesium sulphate + salbutamol; group B: salbutamol alone. †Values are mean (SD).
Pao2 (mm Hg)
    Group A81.0 (8.9)89.3 (4.3)0.000
    Group B82.2 (8.6)90.2 (4.0)0.000
Paco2 (mm Hg)
    Group A33.5 (6.8)37.3 (5.4)0.000
    Group B34.5 (8.5)37.3 (4.6)0.001
Magnesium (mmol/l)
    Group A2.02 (0.18)1.92 (0.21)0.002
    Group B1.94 (0.21)2.12 (0.25)0.000
p value (group A v B)0.0420.000