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 5CCS
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.
5. The additional muscle in Dr. El-Sheikh's enlarged left ventricle means that it requires more oxygen. Which arteries are most important for supplying this ventricle?
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4. A 54-year-old woman is brought to the emergency department because of a 30-minute history of severe chest pain. Her temperature is 37C (98.6F), pulse is110/min, respirations are 20/min, and blood pressure is 70/40 mm Hg. Physical examination shows cold, clammy skin. There is no urine output. Cardiac catheterization shows occlusion of the anterior interventricular (left anterior descending) artery and a markedly decreased cardiac output. A decrease in which of the following is most likely in this patient?A.Arterial H+ concentration O
B. Mixed venous oxygen tension
C. Pulmonary artery pressure
D. Serum angiotensin |I concentration
E. Serum epinephrine concentration
F. Tissue lactate production
Roberto is a 78-year-old male who has recently been diagnosed with Class III Congestive Heart Failure (CHF). His physician told him that his left ventricle has become stiff and cannot relax. Although there is no current treatment that can “fix” Roberto’s condition, he is prescribed two medications: an ACE inhibitor and beta blockers.
There are multiple types of CHF. Which of these types does Roberto have?
Systolic heart failure
Diastolic heart failure
Right-sided heart failure
None of these choices is correct.
ohn, an overweight 49-year-old man with history of diabetes and hypertension is playing soccer. After half an hour of an intense game, he feels severe chest pain that travels to his lower jaw. He is pale, diaphoretic, and short in breath. Upon arrival to the ER, an ECG was taken and the results show the following (note the changes in leads II, III and aVF):
What could be the possible reason for John’s chest pain? Explain your answer based on the clinical information.
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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