Table 4.
Coronary Sinus Blood Flow and Coronary Flow Reserve
| HFpEF, N=25 | LVH, N=13 | Controls, N=18 | P Value HFpEF vs Control | P Value LVH vs Control | P Value HFpEF vs LVH | |
|---|---|---|---|---|---|---|
| Corrected coronary sinus flow at rest, mL/min | 80.9±31.1 | 84.8±15.3 | 59.8±18.8 | 0.020 | 0.019 | 0.89 |
| Corrected coronary sinus flow during ATP infusion, mL/min | 183.7±95.0a | 253.5±62.7a | 225.3±71.0a | 0.23 | 0.61 | 0.039 |
| Δ Corrected coronary sinus flow, mL/min | 102.8±70.9 | 168.7±55.4 | 165.4±57.4 | 0.007 | 0.99 | 0.10 |
| Coronary flow reserve | 2.21±0.55 | 3.03±0.71 | 3.83±0.73 | <0.001 | 0.004 | 0.002 |
Data are expressed as mean±SD. Δ Corrected coronary sinus flow=Corrected coronary sinus flow during ATP infusion−Corrected coronary sinus flow at rest. Coronary flow reserve=Corrected coronary sinus flow during ATP infusion/Corrected coronary sinus flow at rest×100. The difference between the 3 groups was calculated by 1‐way ANOVA with Tukey's post‐hoc test. HFPEF indicates heart failure with preserved ejection fraction.
a
P<0.05 vs corrected coronary sinus flow at rest.