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Circulatory Disorders & Technologies. Disorders: Hypertension Coronary Artery Disease - arteriosclerosis - atherosclerosis - angina - myocardial infarction 3) Stroke . Technologies: Angioplasty Angiogram Coronary Bypass Surgery CT / PET / MRI scans. Disorder #1: Hypertension.

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circulatory disorders technologies
Circulatory Disorders & Technologies



Coronary Artery Disease

- arteriosclerosis

- atherosclerosis

- angina

- myocardial infarction

3) Stroke

  • Technologies:
  • Angioplasty
  • Angiogram
  • Coronary Bypass Surgery
  • CT / PET / MRI scans
disorder 1 hypertension
Disorder #1: Hypertension
  • = high blood pressure (consistently greater than 140/90)
  • Prolonged condition  damage to heart & BV’s.
  • Can lead to more serious disorders (ex. Stroke)
  • Treated through diet, exerciser, weight control, & medication
disorder 2 coronary artery disease
Disorder #2: Coronary Artery Disease

Arteriosclerosis = the loss of elasticity and hardening of the arteries, may be caused by hypertension, age, & plaque build-up.

  • Atherosclerosis = hardeningof arteries due to buildup of plaque (fatty deposits) on or inside the walls of these arteries.
  • Can occur anywhere in the body, but it’s called
  • “coronary artery disease” when it happens in the coronary arteries
  • Angina = pain in the chest, left shoulder, arm, or neck caused by insufficient blood supply to cardiac muscles
  • Often triggered by physical activity, which increases the demand for oxygen.
  • Sometimes mistaken for “heartburn”.
  • Treated with drug called nitroglycerin, which is a vasodilater (opens the coronary arteries to increase blood flow to the cardiac muscle).
disorder 2 coronary artery disease1
Disorder #2: Coronary Artery Disease
  • Myocardial Infarction (aka “Heart Attack”)
  • = death of an area of cardiac muscle tissue due to oxygen deprivation (more severe form of angina).
  • Blood clot completely blocks a coronary artery resulting in cardiac muscle death.
  • Damaged heart cannot pump blood as efficientlycausing fatigue, dizziness, & chest tightness/pain.
  • Risk factors include age, smoking, poor diet, obesity, lack of exercise, stress, family history (genetics), & diabetes


disorder 3 stroke
Disorder #3: Stroke
  • Caused by a blockage of a BV going to the brain.
  • Symptoms vary depending on the part of the brain affected (i.e. Weakness, speech slurring, numbness on one side of body).
  • Can be prevented with a healthy lifestyle.
  • Can be treated with angioplasty.
technology 1 angio plasty
Technology #1: Angioplasty
  • Opens a blocked artery
  • A small balloon is inserted through a catheter & inflated causing the narrowed artery to expand.
  • Stents sometimes used to ensure blocked artery remains open.
technology 2 angio gram
Technology #2: Angiogram
  • Cardiac Catheterization = the insertion of a long, thin tube called a “catheter” into the heart through an artery, usually the femoral (thigh) or brachial (upper arm).
  • Contrast dye, which is can be seen in x-rays, is then injected through the bloodstream.
  • A two-dimensional x-ray called an angiogram is taken, which shows the circulation of blood through the coronary arteries.
  • - Allows doctors to see which arteries are diseased.
technology 3 coronary bypass surgery
Technology #3: Coronary Bypass Surgery

A BV, usually a vein, is extracted from the patient’s leg.

The vein is grafted (attached) to the blocked or narrowed coronary arteries

This re-routes the blood flow & the heart is able to receive O2

technology 4 body scans
Technology #4: Body Scans
  • Computerized Tomography (CT) Scan
  • X-ray imaging produces cross-sectional images of a three-dimensional object.
  • Most commonly used diagnostic tool b/c they are widely accessible.

Positron Emission Tomography (PET) Scan

- Produces cross-sectional images from gamma rays emitted by a radioactive tracer injected into body tissues.

  • Magnetic Resonance Imaging (MRI) Scan
  • Uses radio waves & a magnetic field to produce still & video images inside the body.
  • Considered safer than CT & PET scans because they do not expose the patient to any radiation.
  • Unfortunately, very expensive to buy & operate.