A minimum of three months of loop recorder monitoring is required to reliably detect paroxysmal AF after stroke; one month is insufficient. Even a single one-hour AF episode detected over two years of monitoring doubles stroke risk. Predictors of AF detection include older age, higher CHA2DS2-VASc score, cortical infarcts, multi-territorial strokes, and markers of left atrial cardiopathy.

Obesity (elevated BMI and waist-to-hip ratio) independently increases stroke risk; randomized secondary prevention data are limited.Physical activity tailored to disability level is strongly associated with reduced recurrent stroke risk.Cardiac embolic risk factors: low ejection fraction, mural thrombi, PFO, valvular disease, aortic arch atheroma.Implantable loop recorders monitor for AF for 1-3 years depending on battery life.Low-burden paroxysmal AF still carries higher stroke risk than no AF.A single one-hour AF episode over two years of monitoring doubles stroke risk.Prolonged monitoring detects AF in approximately 15% of cryptogenic stroke cases.Minimum three months of loop recording required; one month is insufficient (detection rate up to 18% at three months).Predictors of AF detection: older age, high CHA2DS2-VASc, cortical infarcts, multi-territorial strokes, left atrial cardiopathy markers.Right-to-left shunts associated with stroke: ASD, VSD, pulmonary AVM, and PFO.