Understanding Medical Surgical Nursing 5th Edition by Linda S. Williams Paula D. Hopper
Understanding Medical Surgical Nursing 5th Edition by Linda S. Williams Paula D. Hopper
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Chapter 21. Cardiovascular System Function, Assessment, and Therapeutic Measures
Complete Chapter Questions With Answers
Sample Questions Are Posted Below
Multiple Choice
Identify the choice that best completes the statement or answers the question.
____ 1. The nurse is reviewing the anatomy and physiology of the cardiac system with a patient scheduled for pacemaker insertion. Which chamber of the heart should the nurse instruct has the greatest workload and usually fails first as a result?
| a. | Left atrium |
| b. | Right atrium |
| c. | Left ventricle |
| d. | Right ventricle |
____ 2. The nurse is helping a patient understand why the heart beat can change in speed. When doing so, what should the nurse explain as being the pacemaker of the heart?
| a. | Bundle of His |
| b. | Sinoatrial node |
| c. | Purkinje’s fibers |
| d. | Atrioventricular node |
____ 3. The nurse is using a stethoscope to listen to a patient’s heart sounds. The nurse recognizes that the “dupp” of the characteristic “lubb-dupp” heart sound indicates what part of the cardiac cycle?
| a. | The closure of the mitral valve |
| b. | The closure of the tricuspid valve |
| c. | The closure of the atrioventricular valves |
| d. | The closure of the aortic and pulmonary semilunar valves |
____ 4. The nurse suspects that a patient’s heart rate is being affected by parasympathetic influence. What should the nurse recall as the effect the parasympathetic nervous system has on the heart?
| a. | Decreases heart rate |
| b. | Decreases resting phase |
| c. | Increases cardiac output |
| d. | Increases strength of contraction |
____ 5. The nurse is caring for a patient recovering from a cardiac catheterization with a right femoral artery entry site. Which action should the nurse take?
| a. | Ambulate every 2 hours. |
| b. | Position knees with 40-degree bend. |
| c. | Avoid movement of right leg as ordered. |
| d. | Perform passive range of motion of right leg hourly. |
MULTIPLE CHOICE
The thicker walls of the left ventricle pump with approximately five times the force of the right ventricle. This difference in force is due to the great difference between systemic and pulmonary blood pressure. A. B. D. These heart chambers do not have the same workload volume as the left ventricle.
PTS: 1 DIF: Moderate
KEY: Client Need: Physiological Integrity—Reduction of Risk Potential | Cognitive Level: Application
The sinoatrial (SA) node is a specialized mass of cardiac muscle that depolarizes rhythmically and most rapidly, about 100 times per minute, and therefore initiates each heartbeat. For this reason, the SA node is sometimes called the pacemaker of the heart. A. C. D. These structures are not considered the pacemaker of the heart.
PTS: 1 DIF: Moderate
KEY: Client Need: Health Promotion and Maintenance | Cognitive Level: Application
The “dupp” indicates closure of the aortic and pulmonary semilunar valves. A. B. C. The atrioventricular valves (mitral, tricuspid) are all the same type of valves, and their closure is indicated by the “lubb” sound.
PTS: 1 DIF: Moderate
KEY: Client Need: Physiological Integrity—Reduction of Risk Potential | Cognitive Level: Analysis
Parasympathetic impulses—along the vagus nerve to the sinoatrial (SA) node, atrioventricular (AV) node, and atrial myocardium—decrease heart rate. B. The parasympathetic nervous system does not influence the resting phase. C. D. The parasympathetic nervous system does not increase cardiac output or the strength of contractions.
PTS: 1 DIF: Moderate
KEY: Client Need: Physiological Integrity—Physiological Adaptation | Cognitive Level: Application
The extremity used for catheter insertion must not be moved or flexed for several hours after the procedure. A. B. D. Since the extremity should not be moved these actions are contraindicated.
PTS: 1 DIF: Moderate
KEY: Client Need: Physiological Integrity—Reduction of Risk Potential | Cognitive Level: Application
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