Crit Care Resusc
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To review the physiology and cardiovascular effects of the commonly used intravenous electrolytes. ⋯ Intravenous potassium chloride, calcium chloride, magnesium sulphate, sodium and potassium phosphate, sodium bicarbonate and hypertonic saline can be used effectively to alter the haemodynamic status and manage cardiac arrhythmias. However, their indications are selective and complications may occur, so careful administration and monitoring are required with their use.