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  Indian J Med Microbiol
 

Figure 12: Low infundibular PS: (a) Modified parasternal long axis view: Diastole-low infundibular stenosis (grey arrow, flat IVS Green arrow); (b) Systole-spectral Doppler across the stenotic area, gradient: 119 mmHg – Unlike the usual PS, Doppler signal of low infundibular PS are seen above the baseline, indistinguishable from VSD signals. Anatomical narrowing gives the clue. (c) Modified PLAX view (same patient): Systole - turbulent jet can be seen (red arrow); See IVS movement towards LV below the stenosis (yellow arrow); (d) turbulent jet in Colour Doppler. PS: Pulmonary stenosis, PLAX: Parasternal long axis, VSD: Ventricular septal defect, IVS: Intact ventricular septum. AV: Aortic valve, LA: Left atrium, LV: Left ventricle

Figure 12: Low infundibular PS: (a) Modified parasternal long axis view: Diastole-low infundibular stenosis (grey arrow, flat IVS Green arrow); (b) Systole-spectral Doppler across the stenotic area, gradient: 119 mmHg – Unlike the usual PS, Doppler signal of low infundibular PS are seen above the baseline, indistinguishable from VSD signals. Anatomical narrowing gives the clue. (c) Modified PLAX view (same patient): Systole - turbulent jet can be seen (red arrow); See IVS movement towards LV below the stenosis (yellow arrow); (d) turbulent jet in Colour Doppler. PS: Pulmonary stenosis, PLAX: Parasternal long axis, VSD: Ventricular septal defect, IVS: Intact ventricular septum. AV: Aortic valve, LA: Left atrium, LV: Left ventricle