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Table 2 Coronary flow and resistance responses to coronary infusions of adenosine and acetylcholine in patients with or without coronary microvascular dysfunction (CMD) undergoing coronary reactivity testing

From: Standard exercise stress testing attenuates peripheral microvascular function in patients with suspected coronary microvascular dysfunction

  No CMD CMD
All Patients Non-EX Exercisers All Patients Non-EX Exercisers
Adenosine
 IMR 16.3 ± 4.4 15.8 ± 4.6 17.3 ± 4.0 26.2 ± 13.3 27.3 ± 15.8 24.6 ± 8.5
 CFR 4.0 ± 1.6 4.1 ± 1.9 3.7 ± 1.1 2.8 ± 1.6 2.7 ± 1.9 2.8 ± 1.0
Acetylcholine
 IMR 24.0 ± 11.6 24.4 ± 11.9 23.2 ± 11.3 39.7 ± 21.7a 40.1 ± 19.6 39.2 ± 25.4
 CFR 2.9 ± 1.4 2.7 ± 1.6 3.1 ± 1.0 1.9 ± 1.3 1.6 ± 0.8 2.3 ± 1.7
  1. Non-EX Non-Exercisers, CMD Coronary Microvascular Dysfunction, CFR Coronary Flow Reserve, IMR Index of Microvascular Resistance. a indicates a significant effect of CMD. Mean ± SD