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Figure 1 Prevalence of Diastolic Dysfunction in Sickle Cell Disease

(A) Distribution of patients with pulmonary arterial hypertension (PH) and diastolic dysfunction (DD). Venn diagram indicating the number of patients without PH (tricuspid regurgitation [TR] <2.5 m/s), with PH (TR 2.5) and tissue Doppler results indicating DD. (B) Detailed distribution by degree of PH and DD. The number of patients without or with mild, moderate, or severe DD are shown in groups based on their TR jet velocity (TR <2.5 m/s, TR 2.5 to 2.9 m/s, and TR 3 m/s). In the 2 high TR velocity groups, there were no patients with severe DD.