Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN: 9780134580999
Author: Elaine N. Marieb, Katja N. Hoehn
Publisher: PEARSON
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Chapter 18, Problem 2CCS
54-Year-Old Female with a Defective Heart Valve
Dr. El-Sheikh is a 54-year-old Egyptian female who complains of weakness, fatigue, shortness of breath, chest pain, and dizziness. Her heart rate is 96 beats/min, and her blood pressure is 148/54 mm Hg. You notice that she nods her head with every heartbeat, and her radial pulse is very strong and abrupt. Her heart sounds are abnormal, with a long diastolic murmur at the right sternal margin in the second intercostal space.
Her doctor orders an echocardiogram, which shows that Dr. El-Sheikh has severe aortic regurgitation (backflow of blood through an incompetent valve) and an enlarged left ventricle.
2. How will blood leaking through the incompetent aortic valve during diastole affect the preload and stroke volume of the left ventricle?
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Chapter 18 Solutions
Human Anatomy & Physiology (11th Edition)
Ch. 18 - Prob. 1RQCh. 18 - 2. The portion of the intrinsic conduction system...Ch. 18 - 3. An ECG provides information about (a) cardiac...Ch. 18 - 4. The sequence of contraction of the heart...Ch. 18 - 5. The fact that the left ventricular wall is...Ch. 18 - 6. The chordate tendineae (a) close the...Ch. 18 - 7. In the heart, which of the following apply? (1)...Ch. 18 - 8. The activity of the heart depends on intrinsic...Ch. 18 - 9. Freshly oxygenated blood is first received by...Ch. 18 - 10. Describe the location and position of the...
Ch. 18 - 11. Describe the pericardium and distinguish...Ch. 18 - 12. Trace one drop of blood from the time it...Ch. 18 - 13. (a) Describe how heart contraction and...Ch. 18 - 14. The refractory period of cardiac muscle is...Ch. 18 - 15. (a) Name the elements of the intrinsic...Ch. 18 - Prob. 11RQCh. 18 - Prob. 12RQCh. 18 - Prob. 13RQCh. 18 - Prob. 20RQCh. 18 - Prob. 21RQCh. 18 - Prob. 22RQCh. 18 - 2. Florita Santos, a middle-aged woman, is...Ch. 18 - 3. Hannah, a newborn baby, needs surgery because...Ch. 18 - Prob. 23RQCh. 18 - Prob. 14RQCh. 18 - 54-Year-Old Female with a Defective Heart Valve...Ch. 18 - 54-Year-Old Female with a Defective Heart Valve...Ch. 18 - 54-Year-Old Female with a Defective Heart Valve...Ch. 18 - 54-Year-Old Female with a Defective Heart...Ch. 18 - 54-Year-Old Female with a Defective Heart Valve...Ch. 18 - 54-Year-Old Female with a Defective Heart Valve...
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- What protein is necessary for packaging acetylcholine into synaptic vesicles?arrow_forward1. Match each vocabulary term to its best descriptor A. affinity B. efficacy C. inert D. mimic E. how drugs move through body F. how drugs bind Kd Bmax Agonist Antagonist Pharmacokinetics Pharmacodynamicsarrow_forward50 mg dose of a drug is given orally to a patient. The bioavailability of the drug is 0.2. What is the volume of distribution of the drug if the plasma concentration is 1 mg/L? Be sure to provide units.arrow_forward
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