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Figure 4 A Representative Case of Group I
This patient was a 43-year-old woman in New York Heart Association functional class I, and she had an LVEF of 43% and a plasma norepinephrine level of 328 pg/ml. (A) Mildly reduced myocardial uptake was observed, and the delayed H/M ratio was 2.2. (B) The relationship between dobutamine infusion rate and LV dP/dtmax of this patient is shown. The LV dP/dtmax at baseline and at a dobutamine infusion rate of 10 µg kg–1 min–1 were 986 and 2,415 mm Hg/s, respectively ( LV dP/dtmax = 145%). Abbreviations as in Figures 1 and 3.
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