Ann Pediatr Card Close
 

Figure 1: (a) During expiration, the right ventricular (RV) decreases in size (compared with 2D image during inspiration). This brings the accessory tricuspid tissue close to interventricular septum (IVS) leading to restriction of ventricular septal defect (VSD) flow seen as turbulence across VSD. (b) During inspiration the RV size increase, separating the accessory tissue from IVS, thus decreasing the restriction (decreased turbulence across the VSD). (c) Continuous wave Doppler at the VSD showing right to left jet with maximum velocity of 3 m/sec and gradient of 36 mmHg during expiration. This gradient is reduced on inspiration

Figure 1: (a) During expiration, the right ventricular (RV) decreases in size (compared with 2D image during inspiration). This brings the accessory tricuspid tissue close to interventricular septum (IVS) leading to restriction of ventricular septal defect (VSD) flow seen as turbulence across VSD. (b) During inspiration the RV size increase, separating the accessory tissue from IVS, thus decreasing the restriction (decreased turbulence across the VSD). (c) Continuous wave Doppler at the VSD showing right to left jet with maximum velocity of 3 m/sec and gradient of 36 mmHg during expiration. This gradient is reduced on inspiration