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. Author manuscript; available in PMC: 2014 Oct 24.
Published in final edited form as: J Am Soc Echocardiogr. 2013 Mar 26;26(5):521–529. doi: 10.1016/j.echo.2013.02.012

Figure 1.

Figure 1

Systolic and diastolic time intervals obtained from flow signals in the mid RV-to-pulmonary artery shunt (RVPAS) with pulsed wave Doppler echocardiography in an infant with hypoplastic left heart syndrome after the Norwood procedure. The systolic duration is defined as the time from onset to cessation of antegrade flow (the flow signal below the baseline) and the diastolic duration as the time from cessation to onset of antegrade flow within the shunt (see arrows).