X hits on this document

PDF document

Common Congenital Heart Lesions - page 65 / 126

369 views

0 shares

0 downloads

0 comments

65 / 126

65 of 126

~REVIEW~ Different Types of Ischemic Syndromes:

  • 1.

    Stable Angina: most common symptom

    • Fixed obstructive plaque in one or more coronary arteries

    • 70% Æ angina with exercise

    • 90% Æ angina at rest

    • chronic predictable transient angina

    • endothelial cell dysfunction Æ problems with vasodilation

    • variable threshold vs fixed threshold depending on degree of vascular tone

    • may have no pathologic findings if no necrosis has occurred

  • 2.

    Unstable Angina

    • Precursor to acute MI

    • Acceleration of symptoms

    • Plaque rupture, platelet aggregation, thrombus formation, vasoconstriction

  • 3.

    Variant Angina

    • Prinzmetal’s syndrome

    • Coronary artery spasm with no evidence of plaque

    • ?early atherosclerosis, with just endo dysfunction?

    • Occurs at rest Æ not a result in increased O2 demand

    • Vasospasm adjacent to area of plaque

  • 4.

    Silent Angina

    • Asymptomatic

    • Problematic for diagnosis

    • Common among diabeticsÆ impaired pain sensation?

  • 5.

    Syndrome X

    • Typical angina, but no plaque formation

    • Problem with the resistance vessels of the heartÆmay not dilate properly

    • Good prognosis

Bottom line: ACUTE PLAQUE CHANGE IS THE CRITICAL COMPONENT IN ACUTE SYNDROMES

uncomplicated.

Disruption of plaque

6

Document info
Document views369
Page views369
Page last viewedSun Dec 11 08:32:23 UTC 2016
Pages126
Paragraphs5002
Words33792

Comments