Is stunned myocardium ischemic on a microvascular level?

L. C. Becker

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Stunned myocardium generally has normal resting flow and most studies have documented normal flow reserve. "Vascular stunning" (reduced vasodilator capacity) can be produced by ischemia, but the duration required is longer than that required to produce mechanical stunning. The two phenomenon can therefore be dissociated and are essentially unrelated. Nevertheless, despite evidence of normal microvascular patency in stunned myocardium, there are observations consistent with the existence of microvascular foci of ischemia, possibly related to vascular spasm or constriction, and this may explain the finding that increased flow in stunned myocardium may partially, or even largely, reverse the mechanical dysfunction. The "microvascular spasm" hypothesis may explain a significant portion of the dysfunction of stunned myocardium and deserves further study.

Original languageEnglish (US)
Pages (from-to)282-284
Number of pages3
JournalBasic Research in Cardiology
Issue number4
StatePublished - Jul 1 1995


  • Myocardial stunning
  • beta-adrenergic agonists
  • contractile reserve
  • free radical hypothesis
  • resting flow

ASJC Scopus subject areas

  • Physiology
  • Cardiology and Cardiovascular Medicine
  • Physiology (medical)


Dive into the research topics of 'Is stunned myocardium ischemic on a microvascular level?'. Together they form a unique fingerprint.

Cite this