Ring-shaped scars 'flag high risk' for malignant arrhythmias

But absence of any ventricular scarring on enhanced imaging bodes well, researchers say

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.

senior man going into mRI machine

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.

The team retrospectively