1.- Tomar la presión sistólica del paciente: 110 mmHg
2.- Doppler continuo sobre la CIV: Gmax 85 mmHg
3.- TAS – Gmax CIV= Presion sistolica VD
4.- 110-85= 25 mmHg PSVD
Figure 44-20 CW Doppler spectral tracing of a ventricular septal defect shunt flow. RV systolic pressure can be estimated by subtracting LV to RV pressure difference from systolic blood pressure. In this example, transseptal pressure gradient is 4V2 = 4(5)[2] = 100 mm Hg. With systolic blood pressure of 130 mm Hg, estimated RV systolic pressure is normal at 30 mm Hg.