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Table 3 Cut-off point of device diameter to weight ratio (Ratio = 0.4) was made according to our clinical experience, occurrence rate of procedure-induced (PI)-AR was significant higher in patients with device diameter to weigh ratio > 0.4 in compared with those with ratio ≤ 0.4

From: Minimally invasive perventricular device closure of doubly committed sub-arterial ventricular septal defects: single center long-term follow-up results

Risk factor Patient number Without PI-AR (n) With PI-AR (n) Risk of PI-AR P
Device/weight Ratio ≤0.4 (n = 42) 37 5 12 % 0.025
  >0.4 (n = 33) 22 11 33 %