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. Author manuscript; available in PMC: 2010 Mar 1.
Published in final edited form as: J Pediatr. 2008 Oct 31;154(3):379–384.e2. doi: 10.1016/j.jpeds.2008.09.021

Figure 1.

Figure 1

Kaplan-Meier Estimates of Time to Clinical Improvement on Sildenafil Therapy. Circles represent censored follow-up. Hemodynamic improvement was defined by at least a 20% improvement sPAP/ssBP or improved degree of septal flattening by echocardiogram.