Indexed patent ductus arteriosus size as the prime predictor of post device closure left ventricular dysfunction: does it have any competitors?

In their study, Kiran et al propose the indexed patent ductus arteriosus (PDA) size at the pulmonary artery end as a simple predictor of post-procedural left ventricular (LV) dysfunction in those with baseline normal LV function1. Whilst we agree with the authors’ observation that the size of the PDA is an important prognostic marker, it is not uncommon to find a PDA where the diameter at the pulmonary artery end is not the minimum diameter. In such cases, the minimum PDA diameter indexed to body surface area may be an appropriate measure. Although this is by far the largest ...