The primary purpose of this pilot study will be feasibility of recruitment. However, in order to further inform a full randomised controlled trial (RCT), information on the incidence of atrial fibrillation (AF) and other arrhythmias, hospital length of stay, resource use and morbidity will be collected.
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Total number of patients recruited over a 6 month period
Timeframe: 6 months
Number of patients successfully randomised into the study to receive standard either usual care or control of potassium at the lower limit of the normal range
Timeframe: 6 months
Protocol violation rate
Timeframe: 6 months
Number of patient with outcome data at 28 days
Timeframe: 6 months