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Item #ANH13100 — Source #1136
|High Blood Pressure - Medical Animation
|MEDICAL ANIMATION TRANSCRIPT: High blood pressure or hypertension is a common condition in which the force of blood on the walls of your arteries is often too high, arteries or the blood vessels that carry blood away from your heart to supply your tissues with oxygen and nutrients. In your heart, two chambers called ventricles contract with each heartbeat to push blood to your lungs and through your arteries to your body. As blood flows through them, three main factors affect the pressure on your artery walls. The first is cardiac output or the amount of blood your ventricles push out of your heart each minute. Your blood pressure goes up as cardiac output increases. The second factor affecting your blood pressure is blood volume or the total amount of blood in your body. Blood pressure also goes up as blood volume increases. The third factor that affects your blood pressure is resistance, which is anything working against the blood flow through your arteries. Several factors contribute to resistance. One resistance factor is the flexibility of your artery wall. Healthy arteries expand with each heartbeat to help reduce blood pressure on the wall. Another resistance factor is the diameter of your arteries. Your body is able to increase the diameter of your arteries to lower your blood pressure, or reduce the diameter to raise your blood pressure. A third resistance factor is blood viscosity or thickness. In your blood, more particles such as proteins and fat, increase viscosity. If your blood is thicker, your blood pressure goes up as your heart works harder to push it through your arteries. Your blood pressure can be measured with a device called a sphygmomanometer or blood pressure cuff. When your heart beats, the pressure of blood on the walls of your arteries is called systolic pressure. When your heart relaxes between beats, pressure on the artery wall is called diastolic pressure. While your blood pressure may change throughout the day, it should optimally be less than 120 millimeters of mercury for systolic pressure, and less than 80 millimeters of mercury for diastolic pressure. If your systolic pressure frequently stays above 130 or your diastolic pressure frequently stays above 80, you have high blood pressure. Over time, high blood pressure will damage the walls of your arteries. Your artery wall may become weak and form an enlargement called an aneurysm or the wall may burst and bleed into the surrounding tissue. Small tears in your artery wall may attract certain substances in your blood such as cholesterol, fat, and calcium to form a buildup called a plaque. Blood flow through your artery decreases as the plaque enlarges. Blood cells can stick to the plaque and form solid clumps called clots, further reducing or completely blocking your blood flow. Damage to your arteries raises your blood pressure even more by making your heart beat more forcefully. Artery damage and reduced blood flow lead to conditions such as a stroke, heart attack, or kidney disease. In most cases, the cause of high blood pressure or hypertension is unknown. This type of high blood pressure is called primary or essential hypertension. Treatment for essential hypertension includes lifestyle changes, such as eating a healthy diet. If you are sensitive to the sodium in salt, your doctor may recommend limiting your intake of salt and highly processed foods. Sodium may cause your body to retain water, which increases both your blood volume and your blood pressure. Other lifestyle changes that can reduce blood pressure include avoiding excessive alcohol intake, getting regular exercise, losing weight if you are overweight, and quitting smoking. Your doctor may also recommend medications that act on your kidneys, blood vessels, or heart to help reduce your blood pressure. Diuretics, commonly called water pills, cause your kidneys to move more salt and water from your blood into your urine, which reduces your blood volume and pressure. Beta blockers reduce the workload on your heart by decreasing both the rate of your heartbeat and the strength of your heart's contractions. Several types of drugs act directly or indirectly to reduce your blood pressure by relaxing your blood vessels, which increases their diameter. These drugs include ACE inhibitors, Angiotensin 2 receptor blockers, calcium channel blockers, and direct-acting vasodilators.|
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|What attorneys say about MLA and The Doe Report:
|"Our practice involves medical negligence cases exclusively. We have six
attorneys and one physician on staff. We have used Medical Legal Art's
staff for every one of our cases over the past 12 years and have found their
services to be extraordinary. The transformation of medical records into
powerful graphic images has without fail been handled expertly,
expeditiously and effectively translating into superb results for our
clients, both in the courtroom and in settlement. Every case can benefit
from their excellent work and we unqualifiedly recommend their services.
They are the best!"
Morrow and Otorowski
Bainbridge Island, Washington
|"Whether it's demonstrating a rotator cuff tear, neck movement a few
milliseconds after rear impact, or a proposed lumbar fusion, the Doe Report
represents an instant on-line database of medical illustration for
health-care and legal professionals.
Illustrations can be purchased 'as is' or modified within hours and sent
either electronically or mounted on posterboard. An illustration is worth a
thousand words, as juries perk up and look intently to capture concepts
that are otherwise too abstract. Start with good illustrations, a clear and
direct voice, a view of the jury as 12 medical students on day one of
training, and your expert testimony becomes a pleasure, even on cross
examination. An experienced trial lawyer should also emphasize these
illustrations at the end of trial, as a means of visually reinforcing key
As a treating physician, I also use these accurate illustrations to educate
my own patients about their medical conditions. The Doe Report is an
invaluable resource, and its authors at MLA have always been a pleasure to
Richard E. Seroussi M.D., M.Sc.
Diplomate, American Boards of Electrodiagnostic Medicine and PM&R
Seattle Spine & Rehabilitation Medicine
|"I wanted to take some time out to let you know what a wonderful job you did
with the 'collapsed lung/fractured rib' illustrations. They were both
detailed and accurate. My medical expert was comfortable working with them
and he spent at least an hour explaining to the jury the anatomy of the
lungs, the ribs and the injuries depicted in the illustrations. Needless to
say, the jury was riveted to the doctor during his testimony.
The jury returned a verdict for $800,000.00 and I'm sure we would not have
done so well if not for the visualizations we were able to put forth with
your assistance. Lastly, my special thanks to Alice [Senior Medical
Illustrator] who stayed late on Friday night and patiently dealt with my
last minute revisions."
Daniel J. Costello
Proner & Proner
New York, NY
|"Our firm was able to settle our case at an all day mediation yesterday and
I am confident that the detail and overall appearance of the medical
illustrations significantly contributed to the settlement. When we require
medical illustrations in the future, I will be sure to contact [MLA]."
Noel Turner, III
Burts, Turner, Rhodes & Thompson