Ring-shaped scars ‘flag high risk’ for malignant arrhythmias

But absence of any ventricular scarring on enhanced imaging bodes well, researchers say
Clare Pain
senior man going into mRI machine

Patients with idiopathic non-sustained ventricular arrhythmia who show distinctive ring-shaped left ventricular scarring on cardiac MRI are at particularly high risk of malignant arrhythmic events, a study shows.

US-led researchers say while scarring is known to be associated with such events, those with a ring-like pattern have a threefold higher risk compared with other scarring and an almost 70-fold increased risk compared with no scarring.