Preservation of Myocardial Perfusion and Function by Keeping Hypertrophied Heart Empty and Beating for Valve Surgery: An In Vivo MR Study of Pig Hearts

Figure 7

LV short-axis cine MR images and heart contractile function before and after NNBP or NHCA. (a) LV slice volume was moderately decreased in NNBP post-CPB when comparing NHCA post-CPB. (b-c) LV end-diastolic and end-systolic volumes were significantly lower in NNBP post-CPB than in NHCA post-CPB. (d-e) Stroke volume and ejection fraction were substantially higher in NNBP post-CPB than in NHCA post-CPB. NNBP was superior to NHCA in promoting cardiac contractile function recovery after CPB. versus NNBP or NHCA. versus pre-CPB.

(a) Left ventricle short-axis cine MR images during the whole cardiac cycle

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