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NR509 Exam Questions With Accurate Answers
ANS: A
The pericardium is a tough, fibrous double-walled sac that surrounds and protects the heart. It has two layers that contain a few milliliters of serous pericardial fluid. - accurate answers-The sac that surrounds and protects the heart is called the: a.Pericardium. b.Myocardium. c.Endocardium. d.Pleural space. ANS: B Returning blood from the body empties into the right atrium and flows into the right ventricle and then goes to the lungs through the pulmonary artery. The lungs oxygenate the blood, and it is then returned to the left atrium through the pulmonary vein. The blood goes from there to the left ventricle and then out to the body through the aorta. - accurate answers-2. The direction of blood flow through the heart is best described by which of these? a.Vena cava right atrium right ventricle lungs pulmonary artery left atrium left ventricle b.Right atrium right ventricle pulmonary artery lungs pulmonary vein left atrium left ventricle c.Aorta right atrium right ventricle lungs pulmonary vein left atrium left ventricle vena cava d.Right atrium right ventricle pulmonary vein lungs pulmonary artery left atrium left ventricle ANS: D Toward the end of diastole, the atria contract and push the last amount of blood (approximately 25% of stroke volume) into the ventricles. This active filling phase is called presystole, or atrial systole, or sometimes the atrial kick. - accurate answers-3. The nurse is reviewing the anatomy and physiologic functioning of the heart. Which statement best describes what is meant by atrial kick?
a. The atria contract during systole and attempt to push against closed valves. b. Contraction of the atria at the beginning of diastole can be felt as a palpitation. c. Atrial kick is the pressure exerted against the atria as the ventricles contract during systole. d. The atria contract toward the end of diastole and push the remaining blood into the ventricles. ANS: C The second heart sound (S2) occurs with the closure of the semilunar (aortic and pulmonic) valves and signals the end of systole. Although it is heard over all the precordium, the S2 is loudest at the base of the heart. - accurate answers-4. When listening to heart sounds, the nurse knows the valve closures that can be heard best at the base of the heart are: a. Mitral and tricuspid. b. Tricuspid and aortic. c. Aortic and pulmonic. d. Mitral and pulmonic. ANS: C Events occur just slightly later in the right side of the heart because of the route of myocardial depolarization. As a result, two distinct components to each of the heart sounds exist, and sometimes they can be heard separately. In the first heart sound, the mitral component (M1) closes just before the tricuspid component (T1). - accurate answers-5. Which of these statements describes the closure of the valves in a normal cardiac cycle? a. The aortic valve closes slightly before the tricuspid valve. b. The pulmonic valve closes slightly before the aortic valve. c. The tricuspid valve closes slightly later than the mitral valve. d.
with swelling in his ankles include jugular venous pulsations 5 cm above the sternal angle when the head of his bed is elevated 45 degrees. The nurse knows that this finding indicates: a. Decreased fluid volume. b. Increased cardiac output. c. Narrowing of jugular veins. d. Elevated pressure related to heart failure. ANS: C First, approximately two thirds of the blood is shunted through an opening in the atrial septum, the foramen ovale, into the left side of the heart, where it is pumped out through the aorta. The foramen ovale closes within the first hour after birth because the pressure in the right side of the heart is now lower than in the left side. - accurate answers-9. When assessing a newborn infant who is 5 minutes old, the nurse knows which of these statements to be true? a. The left ventricle is larger and weighs more than the right ventricle. b. The circulation of a newborn is identical to that of an adult. c. Blood can flow into the left side of the heart through an opening in the atrial septum. d. The foramen ovale closes just minutes before birth, and the ductus arteriosus closes immediately after. ANS: A Despite the increased cardiac output, arterial blood pressure decreases in pregnancy because of peripheral vasodilatation. The blood pressure drops to its lowest point during the second trimester and then rises after that. - accurate answers-10. A 25-year-old woman in her fifth month of pregnancy has a blood pressure of 100/70 mm Hg. In reviewing her previous examination, the nurse notes that her blood pressure in her second month was 124/80 mm Hg. In evaluating this change, what does the nurse know to be true? a.
This decline in blood pressure is the result of peripheral vasodilatation and is an expected change. b. Because of increased cardiac output, the blood pressure should be higher at this time. c. This change in blood pressure is not an expected finding because it means a decrease in cardiac output. d. This decline in blood pressure means a decrease in circulating blood volume, which is dangerous for the fetus. ANS: B With aging, an increase in systolic blood pressure occurs. No significant change in diastolic pressure and no change in the resting heart rate occur with aging. Cardiac output at rest is does not changed with aging. - accurate answers-11. In assessing a 70-year-old man, the nurse finds the following: blood pressure 140/100 mm Hg; heart rate 104 beats per minute and slightly irregular; and the split S2 heart sound. Which of these findings can be explained by expected hemodynamic changes related to age? a. Increase in resting heart rate b. Increase in systolic blood pressure c. Decrease in diastolic blood pressure d. Increase in diastolic blood pressure ANS: C Paroxysmal nocturnal dyspnea (shortness of breath generally occurring at night) occurs with heart failure. Lying down increases the volume of intrathoracic blood, and the weakened heart cannot accommodate the increased load. Classically, the person awakens after 2 hours of sleep, arises, and flings open a window with the perception of needing fresh air. - accurate answers-12. A 45-year-old man is in the clinic for a routine physical examination. During the recording of his health history, the patient states that he has been having difficulty sleeping. "I'll be sleeping great, and then I wake up and feel like I can't get my breath." The nurse's best response to this would be: a.
d. Presence of dyspnea or diaphoresis when sucking ANS: B If cardiovascular disease is suspected, then the nurse should auscultate each carotid artery for the presence of a bruit. The nurse should avoid compressing the artery, which could create an artificial bruit and compromise circulation if the carotid artery is already narrowed by atherosclerosis. Excessive pressure on the carotid sinus area high in the neck should be avoided, and excessive vagal stimulation could slow down the heart rate, especially in older adults. Palpating only one carotid artery at a time will avoid compromising arterial blood to the brain. - accurate answers-15. In assessing the carotid arteries of an older patient with cardiovascular disease, the nurse would: a. Palpate the artery in the upper one third of the neck. b. Listen with the bell of the stethoscope to assess for bruits. c. Simultaneously palpate both arteries to compare amplitude. d. Instruct the patient to take slow deep breaths during auscultation. ANS: B A bruit is a blowing, swishing sound indicating blood flow turbulence; normally, none is present. - accurate answers-16. During an assessment of a 68-year-old man with a recent onset of right-sided weakness, the nurse hears a blowing, swishing sound with the bell of the stethoscope over the left carotid artery. This finding would indicate: a. Valvular disorder. b. Blood flow turbulence. c. Fluid volume overload. d. Ventricular hypertrophy. ANS: D Normally, the examiner may or may not see an apical impulse; when visible, it occupies the fourth or fifth intercostal space at or inside the midclavicular line. A
heave or lift is a sustained forceful thrusting of the ventricle during systole. It occurs with ventricular hypertrophy as a result of increased workload. A right ventricular heave is seen at the sternal border; a left ventricular heave is seen at the apex. - accurate answers-17. During an inspection of the precordium of an adult patient, the nurse notices the chest moving in a forceful manner along the sternal border. This finding most likely suggests a(n): a. Normal heart. b. Systolic murmur. c. Enlargement of the left ventricle. d. Enlargement of the right ventricle. ANS: D The apical impulse should occupy only one intercostal space, the fourth or fifth, and it should be at or medial to the midclavicular line. - accurate answers-18. During an assessment of a healthy adult, where would the nurse expect to palpate the apical impulse? a. Third left intercostal space at the midclavicular line b. Fourth left intercostal space at the sternal border c. Fourth left intercostal space at the anterior axillary line d. Fifth left intercostal space at the midclavicular line ANS: C Numerous comparison studies have shown that the percussed cardiac border correlates only moderately with the true cardiac border. Percussion is of limited usefulness with the female breast tissue, in a person who is obese, or in a person with a muscular chest wall. Chest x-ray images or echocardiographic examinations are significantly more accurate in detecting heart enlargement. - accurate answers-19. The nurse is examining a patient who has possible cardiac enlargement. Which statement about percussion of the heart is true? a. Percussion is a useful tool for outlining the heart's borders. b.
Refer the patient to a cardiologist for further testing. ANS: C The S1 coincides with the carotid artery pulse, is the start of systole, and is louder than the S2 at the apex of the heart; the S2 is louder than the S1 at the base. The nurse should gently feel the carotid artery pulse while auscultating at the apex; the sound heard as each pulse is felt is the S1. - accurate answers-22. When listening to heart sounds, the nurse knows that the S1: a. Is louder than the S2 at the base of the heart. b. Indicates the beginning of diastole. c. Coincides with the carotid artery pulse. d. Is caused by the closure of the semilunar valves. ANS: D A split S2 is a normal phenomenon that occurs toward the end of inspiration in some people. A split S2 is heard only in the pulmonic valve area, the second left interspace. When the split S2 is first heard, the nurse should not be tempted to ask the person to hold his or her breath so that the nurse can concentrate on the sounds. Breath holding will only equalize ejection times in the right and left sides of the heart and cause the split to go away. Rather, the nurse should concentrate on the split while watching the person's chest rise up and down with breathing. - accurate answers-23. During the cardiac auscultation, the nurse hears a sound immediately occurring after the S2 at the second left intercostal space. To further assess this sound, what should the nurse do? a. Have the patient turn to the left side while the nurse listens with the bell of the stethoscope. b. Ask the patient to hold his or her breath while the nurse listens again. c. No further assessment is needed because the nurse knows this sound is an S3. d. Watch the patient's respirations while listening for the effect on the sound. ANS: C
Some murmurs are common in healthy children or adolescents and are termed innocent or functional. The innocent murmur is heard at the second or third left intercostal space and disappears with sitting, and the young person has no associated signs of cardiac dysfunction. - accurate answers-24. Which of these findings would the nurse expect to notice during a cardiac assessment on a 4- year-old child? a. S3 when sitting up b. Persistent tachycardia above 150 beats per minute c. Murmur at the second left intercostal space when supine d. Palpable apical impulse in the fifth left intercostal space lateral to midclavicular line ANS: B A physiologic S3 is common in children. A venous hum, caused by turbulence of blood flow in the jugular venous system, is common in healthy children and has no pathologic significance. Heart murmurs that are innocent (or functional) in origin are very common through childhood. - accurate answers-25. While auscultating heart sounds on a 7-year-old child for a routine physical examination, the nurse hears an S3, a soft murmur at the left midsternal border, and a venous hum when the child is standing. What would be a correct interpretation of these findings? a. S3 is indicative of heart disease in children. b. These findings can all be normal in a child. c. These findings are indicative of congenital problems. d. The venous hum most likely indicates an aneurysm. ANS: C Palpation of the apical impulse is higher and more lateral, compared with the normal position, because the enlarging uterus elevates the diaphragm and displaces the heart up and to the left and rotates it on its long axis. - accurate answers-26. During the precordial assessment on an patient who is 8 months
Split S1. b. Atrial gallop. c. Diastolic murmur. d. Summation sound. ANS: C Inflammation of the precordium gives rise to a friction rub. The sound is high pitched and scratchy, similar to sandpaper being rubbed. A friction rub is best heard with the diaphragm of the stethoscope, with the person sitting up and leaning forward, and with the breath held in expiration. A friction rub can be heard any place on the precordium. Usually, however, the sound is best heard at the apex and left lower sternal border, which are places where the pericardium comes in close contact with the chest wall. - accurate answers-29. The nurse is performing a cardiac assessment on a 65-year-old patient 3 days after her myocardial infarction (MI). Heart sounds are normal when she is supine, but when she is sitting and leaning forward, the nurse hears a high-pitched, scratchy sound with the diaphragm of the stethoscope at the apex. It disappears on inspiration. The nurse suspects: a. Increased cardiac output. b. Another MI. c. Inflammation of the precordium. d. Ventricular hypertrophy resulting from muscle damage. ANS: A The cause of these findings is tetralogy of Fallot. Its subjective findings include: (1) severe cyanosis, not in the first months of life but developing as the infant grows, and right ventricle outflow (i.e., pulmonic) stenosis that gets worse; (2) cyanosis with crying and exertion at first and then at rest; and (3) slowed development. Its objective findings include: (1) thrill palpable at the left lower sternal border; (2) the S1 is normal, the S2 has a loud A2, and the P2 is diminished or absent; and (3) the murmur is systolic, loud, and crescendo-decrescendo. - accurate answers-30. The mother of a 10-month-old infant tells the nurse that she has noticed that her son becomes blue when he is crying and that the frequency
of this is increasing. He is also not crawling yet. During the examination the nurse palpates a thrill at the left lower sternal border and auscultates a loud systolic murmur in the same area. What would be the most likely cause of these findings? a. Tetralogy of Fallot b. Atrial septal defect c. Patent ductus arteriosus d. Ventricular septal defect ANS: D These findings are consistent with mitral regurgitation. Its subjective findings include fatigue, palpitation, and orthopnea, and its objective findings are: (1) a thrill in systole at the apex; (2) a lift at the apex; (3) the apical impulse displaced down and to the left; (4) the S1 is diminished, the S2 is accentuated, and the S3 at the apex is often present; and (5) a pansystolic murmur that is often loud, blowing, best heard at the apex, and radiating well to the left axilla. - accurate answers-31. A 30-year-old woman with a history of mitral valve problems states that she has been "very tired." She has started waking up at night and feels like her "heart is pounding." During the assessment, the nurse palpates a thrill and lift at the fifth left intercostal space midclavicular line. In the same area, the nurse also auscultates a blowing, swishing sound right after the S1. These findings would be most consistent with: a. Heart failure. b. Aortic stenosis. c. Pulmonary edema. d. Mitral regurgitation. ANS: D Heart failure causes decreased cardiac output when the heart fails as a pump and the circulation becomes backed up and congested. Signs and symptoms include dyspnea, orthopnea, paroxysmal nocturnal dyspnea, decreased blood pressure, dependent and pitting edema; anxiety; confusion; jugular vein distention; and fatigue. The S3 is associated with heart failure and is always abnormal after 35
Associated with ventricular hypertrophy. d. Murmur auscultated at the third intercostal space. ANS: C An S4 heart sound is heard at the end of diastole when the atria contract (atrial systole) and when the ventricles are resistant to filling. The S4 occurs just before the S1. - accurate answers-35. During a cardiovascular assessment, the nurse knows that an S4 heart sound is: a. Heard at the onset of atrial diastole. b. Usually a normal finding in the older adult. c. Heard at the end of ventricular diastole. d. Heard best over the second left intercostal space with the individual sitting upright. ANS: D With volume overload, as in heart failure and cardiomyopathy, cardiac enlargement laterally displaces the apical impulse and is palpable over a wider area when left ventricular hypertrophy and dilation are present. - accurate answers-36. During an assessment, the nurse notes that the patient's apical impulse is laterally displaced and is palpable over a wide area. This finding indicates: a. Systemic hypertension. b. Pulmonic hypertension. c. Pressure overload, as in aortic stenosis. d. Volume overload, as in heart failure. ANS: C The correct technique for auscultating the carotid artery for bruits involves the nurse lightly applying the bell of the stethoscope over the carotid artery at three levels. While listening, the nurse asks the patient take a breath, exhale, and briefly hold it. Holding the breath on inhalation will also tense the levator
scapulae muscles, which makes it hard to hear the carotid arteries. Examining only one carotid artery at a time will avoid compromising arterial blood flow to the brain. Pressure over the carotid sinus, which may lead to decreased heart rate, decreased blood pressure, and cerebral ischemia with syncope, should be avoided.
- accurate answers-37. When the nurse is auscultating the carotid artery for bruits, which of these statements reflects the correct technique? a. While listening with the bell of the stethoscope, the patient is asked to take a deep breath and hold it. b. While auscultating one side with the bell of the stethoscope, the carotid artery is palpated on the other side to check pulsations. c. While lightly applying the bell of the stethoscope over the carotid artery and listening, the patient is asked to take a breath, exhale, and briefly hold it. d. While firmly placing the bell of the stethoscope over the carotid artery and listening, the patient is asked to take a breath, exhale, and briefly hold it. ANS: A According to the American Heart Association, the prevalence of hypertension is higher among Blacks than in other racial groups. - accurate answers-38. The nurse is preparing for a class on risk factors for hypertension and reviews recent statistics. Which racial group has the highest prevalence of hypertension in the world? a. Blacks b. Whites c. American Indians d. Hispanics ANS: B When performing hepatojugular reflux, the jugular veins will rise for a few seconds and then recede back to the previous level if the heart is able to pump the additional volume created by the pushing. However, with heart failure, the jugular veins remain elevated as long as pressure on the abdomen is maintained. - accurate answers-39. The nurse is assessing a patient with possible
a. Ethnicity b. Abnormal lipids c. Smoking d. Gender e. Hypertension f. Diabetes g. Family history ANS: 13 The nurse should count a serial measurement (one after the other) of the apical pulse and then the radial pulse. Normally, every beat heard at the apex should perfuse to the periphery and be palpable. The two counts should be identical. If they are different, then the nurse should subtract the radial rate from the apical pulse and record the remainder as the pulse deficit. - accurate answers-1. The nurse is assessing a patient's pulses and notices a difference between the patient's apical pulse and radial pulse. The apical pulse was 118 beats per minute, and the radial pulse was 105 beats per minute. What is the pulse deficit? ANS: A The spinous process of C7 is the vertebra prominens and is the most prominent bony spur protruding at the base of the neck. Counting ribs and intercostal spaces on the posterior thorax is difficult because of the muscles and soft tissue. The vertebra prominens is easier to identify and is used as a starting point in counting thoracic processes and identifying landmarks on the posterior chest. - accurate answers-1. Which of these statements is true regarding the vertebra prominens? The vertebra prominens is: a. The spinous process of C7. b. Usually nonpalpable in most individuals. c. Opposite the interior border of the scapula.
d. Located next to the manubrium of the sternum. ANS: C The right and left costal margins form an angle where they meet at the xiphoid process. Usually, this angle is 90 degrees or less. The angle increases when the rib cage is chronically overinflated, as in emphysema. - accurate answers-2. When performing a respiratory assessment on a patient, the nurse notices a costal angle of approximately 90 degrees. This characteristic is: a. Observed in patients with kyphosis. b. Indicative of pectus excavatum. c. A normal finding in a healthy adult. d. An expected finding in a patient with a barrel chest. ANS: A The left lung has two lobes, and the right lung has three lobes. The right lung is shorter than the left lung because of the underlying liver. The left lung is narrower than the right lung because the heart bulges to the left. The posterior chest is almost all lower lobes. - accurate answers-When assessing a patient's lungs, the nurse recalls that the left lung: a. Consists of two lobes. b. Is divided by the horizontal fissure. c. Primarily consists of an upper lobe on the posterior chest. d. Is shorter than the right lung because of the underlying stomach. ANS: B The apex of the lung on the anterior chest is 3 to 4 cm above the inner third of the clavicles. On the posterior chest, the apices are at the level of C7. - accurate answers-Which statement about the apices of the lungs is true? The apices of the lungs: a. Are at the level of the second rib anteriorly.
