When using calcium chloride during cardiac arrest:
a) 10 ml of calcium chloride 10% provide 2.25 mmol of Ca.
b) It is indicated for overdose of beta – blocker drugs.
c) High plasma calcium concentrations achieved after injection may be harmful to the ischaemic myocardium.
d) Calcium solutions should be administered with bicarbonate when hyperkalaemia presents with severe metabolic acidosis.