Circulatory disorders technologies
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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

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Circulatory disorders technologies

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

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

MOST RISK FACTORS CAN BE CONTROLLED!


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

http://www.youtube.com/watch?v=nZNQ0uliqHI


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.


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