REFERENCES
1. Godo S, Takahashi J, Yasuda S, Shimokawa H. Role of inflammation in coronary epicardial and microvascular dysfunction. Eur Cardiol 2021;16:e13.
2. Sinha A, Rahman H, Perera D. Coronary microvascular disease: current concepts of pathophysiology, diagnosis and management. Cardiovasc Endocrinol Metab 2020;10:22-30.
3. Recio-Mayoral A, Mason JC, Kaski JC, Rubens MB, Harari OA, Camici PG. Chronic inflammation and coronary microvascular dysfunction in patients without risk factors for coronary artery disease. Eur Heart J 2009;30:1837-43.
4. Sara JD, Widmer RJ, Matsuzawa Y, Lennon RJ, Lerman LO, Lerman A. Prevalence of coronary microvascular dysfunction among patients with chest pain and nonobstructive coronary artery disease. JACC Cardiovasc Interv 2015;8:1445-53.
5. Pepine CJ, Ferdinand KC, Shaw LJ, et al. ACC CVD in Women Committee. Emergence of nonobstructive coronary artery disease: a woman's problem and need for change in definition on angiography. J Am Coll Cardiol 2015;66:1918-33.
6. Kaski J, Iqbal K. Cardiac syndrome X: pathogenesis and management. Heart Metab 2008;40:30-5.
7. Chen JW, Ting CT, Chen CI, et al. Coronary microvascular dysfunction is associated with ischemic-like electrocardiogram during exercise in patients with anginal chest pain and normal coronary angiograms. Jpn Heart J 1996;37:865-78.
8. Hirano Y, Ozasa Y, Yamamoto T, et al. Hyperventilation and cold-pressor stress echocardiography for noninvasive diagnosis of coronary artery spasm. J Am Soc Echocardiogr 2001;14:626-33.
9. Shimizu H, Lee JD, Yamamoto M, Satake K, et al. [Induction of coronary artery spasm by combined cold pressor and hyperventilation test in patients with variant angina]. J Cardiol 1994;24:257-61. (in Japanese).
10. Voci P, Testa G, Plaustro G. Imaging of the distal left anterior descending coronary artery by transthoracic color-Doppler echocardiography. Am J Cardiol 1998;81:74G-8G.
11. Hozumi T, Yoshida K, Akasaka T, et al. Noninvasive assessment of coronary flow velocity and coronary flow velocity reserve in the left anterior descending coronary artery by Doppler echocardiography. J Am Coll Cardiol 1998;32:1251-9.
12. Galiuto L, Sestito A, Barchetta S, et al. Noninvasive evaluation of flow reserve in the left anterior descending coronary artery in patients with cardiac syndrome X. Am J Cardiol 2007;99:1378-83.
13. Sicari R, Rigo F, Cortigiani L, Gherardi S, Galderisi M, Picano E. Additive prognostic value of coronary flow reserve in patients with chest pain syndrome and normal or near-normal coronary arteries. Am J Cardiol 2009;103:626-31.
14. Saraste M, Koskenvuo J, Knuuti J, et al. Coronary flow reserve: measurement with transthoracic Doppler echocardiography is reproducible and comparable with positron emission tomography. Clin Physiol 2001;21:114-22.
15. Lethen H, P Tries H, Kersting S, Lambertz H. Validation of noninvasive assessment of coronary flow velocity reserve in the right coronary artery. A comparison of transthoracic echocardiographic results with intracoronary Doppler flow wire measurements. Eur Heart J 2003;24:1567-75.
16. Rinkevich D, Belcik T, Gupta NC, Cannard E, Alkayed NJ, Kaul S. Coronary autoregulation is abnormal in syndrome X: insights using myocardial contrast echocardiography. J Am Soc Echocardiogr 2013;26:290-6.
18. Nishimiya K, Yin B, Piao Z, et al. Micro-optical coherence tomography for endothelial cell visualization in the coronary arteries. JACC Cardiovasc Imaging 2019;12:1878-80.
19. Thomson LE, Wei J, Agarwal M, et al. Cardiac magnetic resonance myocardial perfusion reserve index is reduced in women with coronary microvascular dysfunction. A National Heart, Lung, and Blood Institute-sponsored study from the Women's Ischemia Syndrome Evaluation. Circ Cardiovasc Imaging 2015;8:e002481.
20. Panting JR, Gatehouse PD, Yang GZ, et al. Abnormal subendocardial perfusion in cardiac syndrome X detected by cardiovascular magnetic resonance imaging. N Engl J Med 2002;346:1948-53.
21. Lanza GA, Buffon A, Sestito A, et al. Relation between stress-induced myocardial perfusion defects on cardiovascular magnetic resonance and coronary microvascular dysfunction in patients with cardiac syndrome X. J Am Coll Cardiol 2008;51:466-72.
22. Murthy VL, Naya M, Taqueti VR, et al. Effects of sex on coronary microvascular dysfunction and cardiac outcomes. Circulation 2014;129:2518-27.
23. Wang X, Nie SP. The coronary slow flow phenomenon: characteristics, mechanisms and implications. Cardiovasc Diagn Ther 2011;1:37-43.
24. Moscarella E, Gragnano F, Cesaro A, et al. Coronary physiology assessment for the diagnosis and treatment of coronary artery disease. Cardiol Clin 2020;38:575-88.
25. Cesaro A, Gragnano F, Di Girolamo D, et al. Functional assessment of coronary stenosis: an overview of available techniques. Is quantitative flow ratio a step to the future? Expert Rev Cardiovasc Ther 2018;16:951-62.
26. Lee BK, Lim HS, Fearon WF, et al. Invasive evaluation of patients with angina in the absence of obstructive coronary artery disease. Circulation 2015;131:1054-60.
27. Ciliberti G, Seshasai SRK, Ambrosio G, Kaski JC. Safety of intracoronary provocative testing for the diagnosis of coronary artery spasm. Int J Cardiol 2017;244:77-83.
28. Pepine CJ, Anderson RD, Sharaf BL, et al. Coronary microvascular reactivity to adenosine predicts adverse outcome in women evaluated for suspected ischemia results from the National Heart, Lung and Blood Institute WISE (Women's Ischemia Syndrome Evaluation) study. J Am Coll Cardiol 2010;55:2825-32.
29. Reis SE, Holubkov R, Lee JS, et al. Coronary flow velocity response to adenosine characterizes coronary microvascular function in women with chest pain and no obstructive coronary disease. J Am Coll Cardiol 1999;33:1469-75.
30. Radico F, Cicchitti V, Zimarino M, De Caterina R. Angina pectoris and myocardial ischemia in the absence of obstructive coronary artery disease: practical considerations for diagnostic tests. JACC Cardiovasc Interv 2014;7:453-63.
