An unexpected acute coronary syndrome.

Hypocalcaemia is a common clinical problem that is usually clinically quiescent, but in the acute setting can present with dramatic signs and symptomsHypocalcaemia resulting in an acute coronary syndrome is usually rapidly reversed by administering intravenous calcium.A hypocalcaemia-induced acute coronary syndrome is most likely a function of the myocardium being perfused primarily during diastole, with partial vasospasm limiting the diastolic flow during times of increased cardiac output or energy requirements.