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Alteration of coronary flow velocity during spontaneous angina in a patient with microvascular angina

M Takeuchi1, A Kuroiwa

  • 1Second Department of Internal Medicine, University of Occupational and Environmental Health, School of Medicine, Kitakyushu, Japan. masaaki_takeuchi@hotmail.com

Catheterization and Cardiovascular Interventions : Official Journal of the Society for Cardiac Angiography & Interventions
|May 18, 2000
PubMed

Insights

Microvascular angina can cause unique, temporary changes in coronary blood flow, including reversed systolic flow and increased diastolic flow. These abnormalities during chest pain fully resolved upon follow-up.

Area of Science:

  • Cardiology
  • Physiology

Background:

  • Microvascular angina is a condition characterized by chest pain due to reduced blood flow in the heart's small arteries.
  • Assessing coronary flow velocity is crucial for diagnosing and understanding cardiac conditions.

Observation:

  • Phasic coronary flow velocity was measured in the left and right coronary arteries of a patient experiencing microvascular angina.
  • Hemodynamic changes during an anginal attack included diminished systolic forward velocity, systolic flow reversal, and increased diastolic flow velocity with rapid deceleration.

Findings:

  • The patient exhibited abnormal coronary flow reserve during the anginal episode.
  • These unique coronary flow velocity patterns were reversible and completely resolved at follow-up examination.

Implications:

  • A subset of patients with microvascular angina may present with distinct, transient coronary flow abnormalities during symptomatic episodes.
  • These findings highlight the importance of dynamic assessment of coronary hemodynamics in diagnosing microvascular angina.

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