Causes of enlarged right ventricle
[DOC File]M29-1, Part 5, V - Veterans Affairs
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-left and right separated by interventricular septum. Left ventricle 3X thicker, 5X more friction while pumping, same volume as right. Left is round & opens into the aorta, right is crescent & opens into the pulmonary trunk . External divisions:-Superior vena cava . and. inferior vena cava carry . blood from body to the right atrium-Pulmonary ...
CHAPTER 20- The Cardiovascular System: The Heart
is a form of cardiomyopathy where the heart muscle of the right ventricle is replaced by fatty-fibrous tissue. The scar tissue interrupts the normal smooth sequence of electrical activity that causes the heart muscle to contract, leading to arrhythmias. The weakened muscle will stretch, producing an enlarged right ventricle, which may not pump ...
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B) The left ventricle has a lumen with a circular perimeter. C) The left ventricle pumps blood against less resistance than the right ventricle. D) The left ventricle pumps blood a shorter distance than the right ventricle. E) The left ventricle has a thinner wall than the right ventricle. Answer: B. Reference: Page 696, Anatomy of the Heart
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The aortic valve may fail to open completely and cause obstruction to outflow of blood from the left ventricle. A common cause of aortic valve stenosis is congenital fusion of valve leaflets (bicuspid aortic valve). The murmur of aortic stenosis is systolic, harsh and best heard at the upper right sternum often radiating into the neck.
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Dilatation of a ventricle – over distended chamber. The dilated heart may appear enlarged on a chest x-ray. Combined hypertrophy and dilatation – The most common causes of LVH are hypertension and aortic stenosis. The most common causes of RVH are pulmonic stenosis, congenital heart disease, left ventricular failure and chronic lung disease.
[DOC File]CHAPTER 15: THE CARDIOVASCULAR SYSTEM
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Causes. Pump (Myocardial) Failure of the Right Ventricle. Heart muscle is flabby and weak for unknown causes (so-called “idiopathic dilated cardiomyopathy” or DCM) A heart-muscle disease of the right ventricle accompanied by irregular heartbeats (arrhythmogenic right ventricular cardiomyopathy)
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The external jugular veins (located on either side of the neck) may be enlarged or distended and may have a pulse Evidence of right-sided congestive heart failure—fluid buildup in the abdomen (known as “ascites”), and, more rarely, fluid buildup in the tissues, especially the legs and under the skin (known as “peripheral edema”) in ...
[DOC File]The Heart
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CHAPTER 15: THE CARDIOVASCULAR SYSTEM: BLOOD VESSELS & HEMODYNAMICS. I. INTRODUCTION. The blood vessels form a closed system of tubes that carry blood away from the heart, transport it to all the body tissues and then returns it to the heart. Hemodynamics is the study of the forces involved in accomplishing that feat. II. TYPES OF BLOOD VESSELS:
Right ventricular enlargement | Radiology Reference Article | Radio…
may be enlarged or displaced to the left in left ventricular hypertrophy or pregnancy. D. Percussion: Not useful. E. Auscultation. Start at base of heart at aortic area (second intercostals space to right of sternum). Listen to S1 and S2 and listen for loudness associated with closure of each valve. Move over to pulmonic area. Listen for ...
[DOC File]M29-1, Part 5, H - Veterans Affairs
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, an enlarged region between the vena cava and the right atrium. The cells of the . pacemaker. are termed “ leaky ”, meaning that calcium and sodium ions leak into the cells. Leaking of positive ions causes a slow depolarization to threshold, thus initiating an action potential that quickly spreads throughout the muscle.
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