An electrical engineer is admitted to the Emergency Department following an electrocution. On examination he is alert, orientated, haemodynamically stable and good respiratory function; aparently he only has moderate burn damage on his hands:
a) He can be discharged if no other abnormalities are detected after 24 hours of cardiac monitoring.
b) Moderate damage on his hands suggests mnimal electrical damage.
c) Lactate elevation in the laboratory tests can be explained by prolonged convulsions at the time of elctrical shock.
d) Cardiac damage can be ruled out if troponin levels and ECG on admission are normal.