is most appropriate for the nurse to monitor to determine the effectiveness of medications given to a patient to reduce left ventricular afterload? a. Mean arterial pressure (MAP) b. Systemic vascular resistance (SVR) c. Pulmonary vascular resistance (PVR) d. Pulmonary artery wedge pressure (PAWP) ANS: B Systemic vascular resistance reflects the resistance to ventricular ejection‚ or afterload. The other parameters will be monitored‚ but do not reflect afterload as directly. DIF: Cognitive Level:
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hollow muscular pump that stands at the operational center of the system that pumps liquid blood throughout the body through three types of flexible tubes‚ the blood vessels (Fig. 4.1). The arteries channel blood from the heart to all parts of the body needing service. Once there‚ the blood passes through narrow arteries and enters the capillaries‚ which are the narrowest blood vessels. Many substances and some blood cells pass into and out of the blood by moving through the thin porous capillary walls
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easily absorbed into the intestine to be secreted out of the body. Vasodilators are medications which cause the blood vessels within the human body to dilate. Vasodilators just don’t affect the vessels‚ but also the muscles and the walls of veins and arteries within the human body. Vasodilators are used to prevent the muscles in the body from tightening which allows easy blood flow throughout
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vena cava‚ pulmonary trunk‚ and pulmonary veins. Circulatory Loops There are 2 primary circulatory loops in the human body: the pulmonary circulation loop and the systemic circulation loop. 1. Pulmonary circulation: Pulmonary circulation transports deoxygenated blood from the right side of the heart to the lungs where the blood picks up oxygen and returns to the left side of the heart. The pumping chambers of the heart that support the pulmonary circulation
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Blood Pressure Anatomy And Physiology Breven Sellers 11/3/2014 Arteries • Arteries are thick walled‚ yet they are elastic enough to stand pressure from the heart pumping at a fast rate. The arteries job is to transport blood away from the heart‚ usually only transporting highly oxygenated blood‚ having just left the lungs and on its way to the body’s tissues Arterioles • There are smaller branches of the arteries called arterioles‚ they connect to the capillaries. • Arterioles are the main
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Occasionally‚ a large ventricular septal defect can cause pulmonary hypertension‚ a condition where high blood pressure causes the heart to work harder. Unless the septal hole is corrected‚ the patient may eventually experience heart
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body through the vena cava and pumps it through the pulmonary artery to the lungs‚ and the left side receives the oxygenated blood from the lungs through the pulmonary vein and pumps it into the aorta to be distributed all over the body bringing oxygen and glucose to cells who need it for respiration. A natural pacemaker made of nerve
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dioxide and water that the body exhales. Because energy is vital to survival‚ it is necessary for the organs that aid its production to function properly. Pulmonary adenocarcinoma is a specific type of lung cancer that hinders the body’s ability to properly function and affects thousands of people each year. To understand the meaning of pulmonary adenocarcinoma‚
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ejected into the pulmonary trunk or aorta normally not flow back through the semilunar valve? Back-flowing blood in the ventricles force the semilunar valves to close 12. From which vessels do each of the atria receive blood? Into which vessels do the ventricles eject blood? The right atrium receives blood from the vena cava and sends it to the right ventricles through the tricuspid valve; the right ventricle sends the blood into the pulmonary trunk through the pulmonary valve; the left atrium
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1.6 VESSELS: ARTERIES‚ VEINS & LYMPHATICS CARDIOVASCULAR SYSTEM Structure • heart‚ arteries‚ arterioles‚ capillaries‚ venules‚ veins Functions • transportation (oxygen‚ carbon dioxide‚ nutrients‚ wastes‚ wastes hormones) • regulation (pH‚ body temperature‚ temperature fluid & electrolytes) Principle arteries and veins CARDIOVASCULAR SYSTEM • Heart: pumps blood • Artery: vessel leaving the heart (Arteries take blood AWAY from your heart) • Vein: vessel going to the heart • Capillaries:
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