Trials show no benefit of calcium administration in cardiac resuscitation. Theoretically, it should improve excitation-contraction coupling and increase automaticity, but calcium causes cell death and ischaemia.
Calcium is indicated during resuscitation from pulseless electrical activity if this is thought to be caused by:
In adults, the initial dose of 10 ml 10% calcium chloride (6.8 mmol Ca2+) may be repeated if necessary
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