acsmisuespring09

acsmisuespring09 - AcuteCoronarySyndrome...

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
Acute Coronary Syndrome Acute Coronary Syndrome Myocardial Infarction Myocardial Infarction Susan Hampson
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A Continuum of Disease A Continuum of Disease Stable angina Unstable angina Myocardial infarction All are a result of coronary artery  disease (CAD) Differences in pattern of pain,  reversibility of damage to myocardium 
Background image of page 2
Coronary Artery Disease and  Acute Coronary Syndrome Atherosclerosis Coronary Artery Disease (CAD) Clinical Manifestations Angina Pectoris Acute Coronary Syndrome Sudden Cardiac Death
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Progression of  Atherosclerosis www.sbi.org.br/sbinarede/SBInarede31/
Background image of page 4
Risk Factors Risk Factors CAD/ACS CAD/ACS Non-modifiable Age Gender Family history Genetics  Modifiable  Major  Elevated serum lipids HTN Tobacco use Physical inactivity Obesity Contributing  DM Metabolic syndrome Psychologic states Stress  Homocysteine/CRP
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Prevention of Heart Disease Prevention of Heart Disease Achieve/maintain healthy weight Reduce sodium intake Increase physical activity Avoid ALL tobacco products Limit alcohol intake Choose and adhere to a low  cholesterol, low saturated fat diet Good teaching guide, p. 729, table 34-3
Background image of page 6
Etiology/Pathophysiology of ACS Etiology/Pathophysiology of ACS Ischemia vs. Necrosis Ischemia vs. Necrosis Ischemia Inadequate blood (O2) flow to myocardial  cells Oxygen demand exceeds supply IS reversible  Necrosis Sustained ischemia to myocardial cells Irreversible cell damage/death occurs 
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Myocardial Oxygenation: Supply and Demand Increase in demand for O2  –or- Decrease in supply of O2 Both lead to  Myocardial Ischemia  or  lack of oxygen supply to the heart Cause: narrowing of coronary arteries  by atherosclerosis Usually 75% occluded before  ischemia occurs
Background image of page 8
More about ISCHEMIA Myocardium becomes cyanotic in  10 sec! ECG changes occur Contractility at the site stops after several  minutes  No  GLUCOSE  for aerobic metabolism Anaerobic metabolism begins Lactic Acid  is produced, irritates nerve  fibers Pain impulses sent to cardiac nerves and  upper thoracic nerve roots Cardiac cells viable for  20 min Reversible  if blood flow is restored
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Question When coronary arteries occlude,  collateral circulation develops  immediately and will enhance  myocardial tissue perfusion.
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 06/20/2011 for the course NURS 344 taught by Professor Hampson during the Spring '11 term at St. Xavier.

Page1 / 31

acsmisuespring09 - AcuteCoronarySyndrome...

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online