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Table 2 Comparison of coronary sinus blood flow and CFR

From: Prognostic value of resting coronary sinus flow determined by phase-contrast cine cardiovascular magnetic resonance in patients with known or suspected coronary artery disease

Patients with known CAD All patients N = 693 Patients without MACE N = 648 Patients with MACE N = 45 *P-value
CSBF at rest (mL/min) 86.7 ± 32.9 84.7 ± 30.9 114.7 ± 44.9 < 0.001
CSBF during ATP infusion (mL/min) 236.4 ± 87.4** 235.8 ± 88.7** 245.3 ± 66.5** 0.47
ΔCSBF (mL/min) 149.7 ± 72.7 151.1 ± 73.8 130.6 ± 50.9 0.068
Coronary flow reserve 2.84 ± 0.91 2.89 ± 0.92 2.27 ± 0.60  < 0.001
Patients with suspected CAD All patients N = 519 Patients without MACE N = 472 Patients with MACE N = 47 *P-value
CSBF at rest (mL/min) 89.8 ± 37.8 86.6 ± 36.7 122.2 ± 33.3 < 0.001
CSBF during ATP infusion (mL/min) 242.4 ± 87.4** 241.6 ± 90.3** 250.2 ± 48.5** 0.52
ΔCSBF (mL/min) 152.6 ± 70.1 155.1 ± 72.1 127.9 ± 39.2 0.011
Coronary flow reserve 2.85 ± 0.84 2.93 ± 0.84 2.10 ± 0.40 < 0.001
  1. Data are expressed as mean ± SD or number (%)
  2. *P-values represent the difference between patients with and without MACE. **P < 0.05 vs. CSBF at rest
  3. ΔCSBF = CSBF during ATP infusion–CSBF at rest
  4. Coronary flow reserve = CSBF during ATP infusion / CSBF at rest × 100
  5. ATP adenosine triphosphate, CSBF coronary sinus blood flow, CFR coronary flow reserve, MACE major adverse cardiac events, SD standard deviation