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No intervention was being carried out, but 1\u2005month later further evaluation with a right and left heart catheterisation showed the classical square-root sign with equalisation of diastolic pressures in both ventricles as well as ventricular interdependence. Idiopathic constrictive pericarditis was thus diagnosed with a subsequent pericardial stripping which confirmed a thickened pericardium encasing the heart.<\/jats:p>","DOI":"10.1136\/bcr-2013-008788","type":"journal-article","created":{"date-parts":[[2013,2,28]],"date-time":"2013-02-28T20:51:43Z","timestamp":1362084703000},"page":"bcr2013008788","source":"Crossref","is-referenced-by-count":1,"title":["Hiding in plain sight; constrictive pericarditis"],"prefix":"10.1136","volume":"2013","author":[{"given":"Jonathan 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