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Heart Failure - Medical Animation

 

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Heart Failure - Medical Animation
MEDICAL ANIMATION TRANSCRIPT: In the normal heart, deoxygenated blood flows from the body through the superior and inferior vena cava into the right atrium. The blood, a volume known as preload, then moves into the right ventricle, which contracts and sends blood out of the heart and into the lungs to remove carbon dioxide and collect oxygen. Oxygenated blood moves from the lungs into the left atrium, then moves into the left ventricle which contracts and propels oxygenated blood out of the heart and into the systemic circulation against resistance known as after load. When the heart losses its ability to pump enough blood to meet its needs or those of the body, the diagnosis is heart failure. In left-sided heart failure, the left ventricle does not pump an adequate volume of oxygenated blood into the systemic circulation. Left-sided heart failure causes pulmonary congestion, a buildup of blood and fluid in the lung tissues that interferes with respiration. In response to the low levels of oxygen, the heart rate increases to compensate for the left ventricle's weakened state and to meet the body's oxygen demands, which in time leads to thickening, or hypertrophy, of the myocardium as it labors to push blood out of the heart against the increasing pressure in the pulmonary vessels and fluid in the lungs and continuing the cycle of cardiac muscle damage. In right-sided heart failure, the right ventricle is unable to contract with enough force to drive enough blood through the pulmonary arteries to the lungs for oxygenation. Right-sided heart failure results in a buildup of blood in the venous circulation, causing fluid retention called edema throughout the body. Deprived of sufficient blood flow, the kidneys fail to filter excessive sodium and water from the blood, leading to a fluid imbalance and increased vascular resistance against which the heart must pump. The result is perpetual damage to the heart's overworked tissues. Treatment for heart failure involves changes in lifestyle such as diet and exercise, medication, surgery, or a combination of approaches. Commonly, therapies for right-sided heart failure are geared toward improving left sided cardiac function. In heart failure, an increase in fluid volume places added stress on the overloaded heart. Diuretic medications reduce fluid volume and venous return by inhibiting sodium and water reabsorption along the kidney's renal tubular system, increasing the amounts of sodium and water excreted in the urine and the volume of urine produced. ACE inhibitors block hormones in the renin-angiotensin-aldosterone system, dilating vessels, lowering blood volume and venous return, decreasing the heart's workload, and halting ventricular hypertrophy. Digoxin is a medication that increases the force of myocardial contractility by raising intracellular sodium and calcium concentrations. To compensate for the decreased cardiac output in heart failure, the sympathetic nervous system initiates norepinephrine release, raising the overworked heart's rate and force of contractions. Beta-blockers are prescribed to compete with norepinephrine molecules for binding sites on cardiomyocytes, preventing norepinephrine's effects, resulting in reduced speed and strength of the contractions, which can support more efficient circulation through the body. [music]

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What attorneys say about MLA and The Doe Report:
"I wanted to thank you for the terrific job you did illustrating my client's injuries. The case was settled at the pre-suit mediation, and I believe a good part of the success we had was due to the medical legal art you prepared.

Your work received the ultimate compliment at the conclusion of the mediation. The hospital risk manager took the exhibit with them at the conclusion of mediation, and will be using it to train nurses on how to prevent bed sores..."

Steven G. Koeppel
Troy, Yeslow & Koeppel, P.A.
Fort Myers, FL

"For us, the defining feature of effective demonstrative evidence is whether, by itself, the piece will tell the story of the case. Medical legal Art provides our firm with illustrations and animations that are clear and persuasive. Their exhibits tell the story in a way that allows the jury to understand a very complex subject, very quickly."

James D. Horwitz
Koskoff, Koskoff & Bieder, P.C.
Bridgeport, CT

"Medical illustrations are essential evidence in personal injury litigation and MLA is simply the best I've found at producing high-quality illustrations. Your illustrators are not only first-class artists, but creative and responsive. Your turn around time is as good as it gets. My clients have won over $60 million in jury verdicts and I can't recall a case which did not include one of your exhibits. On behalf of those clients, thanks and keep up the great work!"

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Allen Law Firm
Valparaiso, IN
www.kenallenlaw.com

"Thank you very much for the great work on the medical exhibits. Our trial resulted in a $16 million verdict for a 9 year old boy with catastrophic injuries, and the medical illustrations definitely played key role in the trial."

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Brayton Purcell
Salt Lake City, UT













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