Calcium has diverse roles in neuromuscular mechanisms. Within the cardiovascular system, hypocalcaemia is known to both impair myocardial contractility and prolong the QT interval, predisposing to ventricular arrhythmias. We present a case of chronic hypocalcaemia with prolonged QT interval associated with an atrial arrhythmia. Recent studies of congenital long QT syndrome suggest there is also a predisposition to atrial arrhythmias. Our case raises the hypothesis that acquired causes of long QT cause similar repolarisation abnormalities that predispose to atrial arrhythmias.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3029862 | PMC |
| http://dx.doi.org/10.1136/bcr.08.2009.2216 | DOI Listing |
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