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“However, both fenoterol and isoproterenol resulted in greater positive inotropic stimulation than did albuterol, and fenoterol caused a greater fall in plasma potassium levels than did the other β‐agonists.”
Clinical pharmacology and therapeutics • 1990 | View Paper
“Plasma potassium levels decreased significantly in subjects who received fenoterol : the decrease was 0.4 +/- 0.3 (SD) mmol/l in group I, 0.5 +/- 0.2 mmol/l in group II and 0.9 +/- 0.1 mmol/l in group III.”
“ Fenoterol , salbutamol and terbutaline all significantly decreased plasma potassium when compared to saline; however, the magnitude and duration of this effect differed between the active agents.”