{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,6]],"date-time":"2026-05-06T20:38:57Z","timestamp":1778099937621,"version":"3.51.4"},"reference-count":19,"publisher":"Wiley","issue":"7","license":[{"start":{"date-parts":[[2025,3,30]],"date-time":"2025-03-30T00:00:00Z","timestamp":1743292800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Cathet Cardio Intervent"],"published-print":{"date-parts":[[2025,6]]},"abstract":"<jats:title>ABSTRACT<\/jats:title><jats:p>Angina pectoris with non\u2010obstructive coronary arteries (ANOCA) is a prevalent condition, particularly affecting women, and is often associated with coronary microvascular dysfunction (CMD). CMD, the primary cause of ANOCA, is associated with a diminished quality of life and adverse clinical outcomes. Invasive coronary function testing (CFT) now provides a precise diagnosis of CMD through indices such as coronary flow reserve (CFR) and index of microcirculatory resistance (IMR), assessed using the bolus thermodilution technique. This comprehensive review outlines a systematic approach to evaluating CMD, emphasizing practical steps and troubleshooting strategies to ensure accurate measurements of CFR and IMR. CMD phenotypes, including structural, functional, and compensated CMD, are discussed, along with their distinct pathophysiological mechanisms. Common challenges encountered during CMD testing, such as improper guide or wire positioning, waveform artifacts, and injection errors, are addressed with practical solutions. While continuous thermodilution offers enhanced accuracy, bolus thermodilution remains cost\u2010effective and widely utilized. Proficiency in the intricacies of CMD testing is crucial for accurate diagnosis and management, ultimately enhancing clinical outcomes for this underrecognized patient population.<\/jats:p>","DOI":"10.1002\/ccd.31507","type":"journal-article","created":{"date-parts":[[2025,3,31]],"date-time":"2025-03-31T05:53:02Z","timestamp":1743400382000},"page":"1744-1754","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":2,"title":["A Systematic Approach and Practical Guide to Using Bolus Thermodilution for Invasive Coronary Microvascular Dysfunction Assessment"],"prefix":"10.1002","volume":"105","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-9036-7049","authenticated-orcid":false,"given":"Jason","family":"Galo","sequence":"first","affiliation":[{"name":"Section of Interventional Cardiology, MedStar Washington Hospital Center Washington District of Columbia 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