Comparison 2. Albuterol inhalation versus saline inhalation.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Mortality	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	0.46 [0.06, 3.64]
2 Cardiac arrhythmias	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
3 Change in serum K+ from baseline at 4 hours after treatment	1	19	Mean Difference (IV, Fixed, 95% CI)	‐0.69 [‐0.87, ‐0.51]
4 Change in serum K+ from baseline at 8 hours after treatment	1	19	Mean Difference (IV, Fixed, 95% CI)	‐0.59 [‐0.78, ‐0.40]
5 IVH (grade > 2)	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	0.69 [0.07, 6.34]
6 Tremors/twitching	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	0.69 [0.07, 6.34]
7 Hyperglycaemia (> 11.1 mmol/L)	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	1.38 [0.37, 5.13]
8 Pulmonary haemorrhage	1	19	Risk Ratio (M‐H, Fixed, 95% CI)	0.44 [0.02, 9.69]