Cardiac 1 Flashcards
Ischemic Heart Disease
Coronary Artery Disease
Arteries become CLOGGED do to atherosclerosis
Coronary arteries branch from?
They branch from the AORTA and feed new blood to the heart tissue itself.
CAD: Most important artery that can CLOG
Left Anterior Descending Artery (LAD) or Widow maker
-feeds L-ventricle
Problems with the heart
- Electrical (conduction)
- Plumbing (artery blockage, spasm, or valve issue)
- Pump (heart muscle)
CAD Statistics
- 1 in 7 deaths
- Umbrella term: people group heart attacks under CAD
- AKA: Coronary Heart Disease
CAD: Non-modifiable Risk Factors
Age Family Hx Gender -males, then females after menopause are equal risk Ethnicity -Black, native, Hispanic Genetics
CAD: Modifiable Risk Factors
- Hypertension
- Smoking
- Diabetes
- Abdominal Obesity/Inactivity
- Diet
- salt, fat, carb
* *6. Hyperlipidemia - Depression/Stress/Anxiety
Ischemic Heart Problems
Atherosclerosis develops in the arteries supplying the myocardium ARTERY BLOCKAGE
- Decreased tissue perfusion
- ENDOTHELIAL DYSFUNTION
- Heart must work harder
CAD: Endothelial Dysfunction
Vessels become NARROWED when they should dilate
Causes of Endothelial Dysfunction
DM
HTN
HPL
Smoking
Main symptom of CAD
Angina
- May be asymptomatic
- Eventually, as coronary arteries narrow, the decreased blood flow may cause chest pain (angina)
Complete Occlusion: Myocardial Infarction
Symptoms of Angina
CHEST PAIN (palpitations) heart burn irregular HR Dizziness Weakness Anxiety Nausea Cold sweats Burning sensation
Stable Angina
Stable: coronary blood flow is diminsihed but NOT BLOCKED
There is an imbalance between oxygen supply and demand
Characteristics of Stable Angina
- Episodic
- Crescendo - Decrescendo
- Occurs on exertion, relieved by rest**
- Pain Lasts 2-5 minutes
Cause: Atherosclerosis
Difference between Stable and Unstable angina
Stable: Brought on by EXERTION and relived by REST