14448265
Descrição
Quiz por Mitch Thornell, atualizado more than 1 year ago
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Criado por Mitch Thornell
quase 6 anos atrás
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Questão 1
Questão
A 34-year-old man who is an intravenous drug user has presented to the emergency department with malaise, abdominal pain, and lethargy. The health care team wants to rule out endocarditis as a diagnosis. Staff of the department would most realistically anticipate which of the following sets of diagnostics?
Responda
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CT of the heart, chest x-ray, and ECG
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ECG, blood pressure, and stress test
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Cardiac catheterization, chest x-ray, electrolyte measurement, and white cell count
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Echocardiogram, blood cultures, and temperature
Questão 2
Questão
A client has been diagnosed with mitral valve stenosis following his recovery from rheumatic fever. Which of the following teaching points would be most accurate to convey to the client?
Responda
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Your mitral valve isn't opening up enough for blood to flow into the part of your heart that sends blood into circulation
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The valve between your left ventricle and left atria is infected and isn't allowing enough blood through.
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Your heart's mitral valve isn't closing properly so blood is flowing backward in your heart and eventually into your lungs.
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The normal tissue that makes up the valve between the right sides of your heart has stiffened
Questão 3
Questão
On a routine physical exam visit, the physician mentions that he hears a new murmur. The patient gets worried and asks, What does this mean? The physician responds,
Responda
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It would be caused by stress. Let's keep our eye on it and see if it goes away with your next visit.
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This may make you a little more fatigued than usual. Let me know if you start getting dizzy or light-headed.
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This could be caused by an infection. Have you been feeling well the past few weeks?
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One of your heart valves is not opening properly. We need to do an echocardiogram to see which valve is having problem.
Questão 4
Questão
A 13-year-old boy has had a sore throat for at least a week and has been vomiting for 2 days. His glands are swollen, and he moves stiffly because his joints hurt. Throat cultures show infection with group A streptococci. This child is at high risk for
Responda
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infective endocarditis
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vasculitis
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myocarditis
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mitral valve stenosis.
Questão 5
Questão
A physician has ordered the measurement of a cardiac patient's electrolyte levels as part of the client's morning blood work. Which of the following statements best captures the importance of potassium in the normal electrical function of the patient's heart?
Responda
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The reciprocal movement of one potassium ion for one sodium ion across the cell membrane results in the production of an action potential.
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The impermeability of cardiac cell membranes to potassium allows for action potentials achieved by the flow of sodium ions.
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Potassium is central to establishing and maintaining the resting membrane potential of cardiac muscle cells.
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Potassium catalyzes the metabolism of ATP, producing the gradient that results in electrical stimulation.
Questão 6
Questão
A 63-year-old male client has been diagnosed with a bundle branch block. How will this client's care team most likely expect his condition to be expressed diagnostically?
Responda
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His ECG will show a flattened P wave as a result of impaired atrial depolarization.
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Conduction from the Purkinje fibers to the bundle branches is compromised by inadequate conduction
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His ECG will show an inordinately wide QRS complex because impulses are bypassing the normal conduction tissue.
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His AV node will be performing the primary pacemaker role due to inadequacy of the SA node.
Questão 7
Questão
A client has been diagnosed with mitral valve stenosis following his recovery from rheumatic fever. Which of the following teaching points would be most accurate to convey to the client?
Responda
-
The valve between your left ventricle and left atria is infected and isn't allowing enough blood through.
-
Your heart's mitral valve isn't closing properly so blood is flowing backward in your heart and eventually into your lungs.
-
Your mitral valve isn't opening up enough for blood to flow into the part of your heart that sends blood into circulation.
-
The normal tissue that makes up the valve between the right sides of your heart has stiffened.
Questão 8
Questão
You are looking after a 61-year-old male client in the hospital who has presented with a new onset of atrial fibrillation. Which of the following courses of treatment would you most likely expect the attending physician to initiate?
Responda
-
Antihypertensives and constant cardiac monitoring in a high acuity unit
-
Immediate cardioversion followed by surgery to correct the atrial defect
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Anticoagulants and beta-blockers to control rate
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Diuretics, total bed rest, and cardioversion if necessary
Questão 9
Questão
The initial medical management for a symptomatic patient with obstructive hypertrophic cardiomyopathy (HCM) would be administering a medication to block the effects of catecholamines. The nurse will anticipate administering which of the following medications?
Responda
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Lisinopril, an ACE inhibitor
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Lasix, a diuretic
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Lanoxin, an inotropic
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Propranolol, a beta-adrenergic blocker
Questão 10
Questão
The amount of blood pumped by one ventricle in one minute, is called the
Responda
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ejection fraction.
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stroke volume.
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cardiac output.
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end-diastolic volume.
Questão 11
Questão
If someone's heart has a stroke volume of 70 ml and a heart rate of 90 beat/minute, the cardiac output would be
Responda
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0.77 L/min
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6.3 L/min
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1.28 ml/min
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70 ml/min
Questão 12
Questão
Any mechanism that increases heart rate is said to have a positive ____ effect.
Responda
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inotropic
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feedback
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chronotropic
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cholinergic
Questão 13
Questão
Stroke volume is regulated by all of the following except
Responda
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peripheral resistance
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contractility
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cardiac output
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end-diastolic volume.
Questão 14
Questão
The preload acting on a ventricle is equivalent to that chamber's
Responda
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stroke volume
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contractility
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end-diastolic volume
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ejection fraction
Questão 15
Questão
The afterload imposed on a ventricle refers to
Responda
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the amount of blood added to a ventricle by atrial systole
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the ejection fraction, or percentage of EDV ejected by ventricular systole
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Its end-systolic volume, the blood left after contraction is complete
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the total peripheral resistance opposing the ejection of blood.
Questão 16
Questão
The Frank-Starling law of the heart describes the proportional relationship between
Responda
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stroke volume and end-diastolic volume
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the left and right ventricles
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stroke volume and cardiac output
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stroke volume is and total peripheral resistance
Questão 17
Questão
A positive inotropic agent is something that
Responda
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increases the heart rate in positive feedback loop
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decreases the contractility of myocardial fibers
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increases the contractility of myocardial fibers
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reduces the heart rate in positive feedback loop
Questão 18
Questão
The nurse working in the ICU knows that chronic elevation of left ventricular end-diastolic pressure will result in the patient displaying which of the following clinical manifestations?
Responda
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Dyspnoea and crackles in bilateral lung bases
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Muscle cramping and cyanosis in the feet
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Chest pain and intermittent ventricular tachycardia
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Petechia and spontaneous bleeding
Questão 19
Questão
Which one of the following is not a pathophysiological change associated with heart failure?
Responda
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Decreased angiotensin II production.
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Increased myocardial oxygen demand.
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Cardiac remodelling.
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Decreased myocardial contractility.
Questão 20
Questão
A 3-year-old child with right-sided heart failure has been admitted for worsening of his condition. Which of the following assessments would be considered one of the earliest signs of systemic venous congestion in this toddler?
Responda
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Breathlessness with activity
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Increased urine output
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Enlargement of the liver
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Excessive crying
Questão 21
Questão
A nurse will be providing care for a female patient who has a diagnosis of heart failure that has been characterized as being primarily right sided. Which of the following statements best describes the presentation that the nurse should anticipate? The client
Responda
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has cyanotic lips and extremities, low urine output, and low blood pressure.
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complains of dyspnea and has adventitious breath sounds on auscultation (listening).
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has a distended bladder, facial edema, and nighttime difficulty breathing.
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has pitting edema to the ankles and feet bilaterally, decreased activity tolerance, and occasional upper right quadrant pain.
Questão 22
Questão
A nurse is administering morning medications to a number of patients on a medical unit. Which of the following medication regimens is most suggestive that the patient has a diagnosis of heart failure?
Responda
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Anticoagulant, antihypertensive, calcium supplement
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Beta-blocker, potassium supplement, anticoagulant
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Diuretic, ACE inhibitor, beta-blocker
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Antihypertensive, diuretic, antiplatelet aggregator
Questão 23
Questão
Atrial fibrillation may:
Responda
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Increase turbulence within the atrial chamber
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Induce an irregular heart rate
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increase the risk of thromboembolism
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All answers are correct
Questão 24
Questão
By definition, tachycardia describes any heart rate exceeding ______ beats/min
Responda
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60
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75
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95
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100
Questão 25
Questão
Complete cessation of electrical signals from the AV node to the ventricles is known as:
Responda
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first degree block
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second degree block
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Third degree block
-
all answers are correct
Questão 26
Questão
What changhe results from total heart block
Responda
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Spontaneous slow ventricular contractions, not coordinated with atrial contraction
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a wide QRS wabe
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Periodic omission of a ventricular contraction
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A prolonged PR interval
Questão 27
Questão
A 65-year-old male with history of untreated hypertension is now experiencing left heart failure. The most likely reason is
Responda
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myocardial hypertrophy and ventricular remodelling
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alterations in alpha and beta receptor function
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Inhibition of renin and aldosterone
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ventricular dilation and wall thinning
Questão 28
Questão
Excess preload can be reduced by
Responda
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use of diuretics
-
Use of antidiuretics
-
all answers are correct
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increasing volume intake, that is, drinking more fluid
Questão 29
Questão
Which of the following would increase the work load of the left ventricle
Responda
-
stenosis of the aortic semilunar valves
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regurgitating aortic semilunar valves
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hypertension
-
all answers are correct
Questão 30
Questão
Paroxysmal nocturnal dyspnea is marked by
Responda
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haemoptysis and rales
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cardiomegaly
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Bradycardia and weak pulse
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distended neck veins and flushed face
Questão 31
Questão
A very rapid heart rate reduces cardiac output because:
Responda
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Ventricular fibrillation develops immediately
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venous return is increased
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conduction through the AV node is impaired
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ventricular filling is reduced
Questão 32
Questão
Pericarditis causes a reduction in cardiac output as a result of which of the following
Responda
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delays in the conduction system, interfering with a cardiac rhythm
-
Excess fluid in the pericardial cavity, which decreases ventricular filling
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Incompetent valves, which allow regurgitation of blood
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Weak myocardial contractions due to friction rub
Questão 33
Questão
A 63-year-old male client has been diagnosed with bundle branch block. how will this clients care team most likely expect his condition to be expressed diagnostically
Responda
-
his ECG will show an inordinately wide QRS complex because impulses are bypassing the normal conduction tissue
-
His AV node will be performing the primary pacemaker role due to inadequacy of the SA node
-
Conduction from the purkinje fibers to the bundle branches is compromised by inadequate conduction
-
His ECG will show a flattened P wave as a result of impaired atrial depolarization
Questão 34
Questão
Clients who have renal impairment are at risk of developing ________ during treatment with ACE inhibitors
Responda
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Hyperkalaemia
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Hypernatraemia
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Hypokalaemia
-
Hyponatraemia
Questão 35
Questão
Right heart failure will likely cause:
Responda
-
Pitting oedema in the lower legs resulting from increased venous pressure
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non-pitting oedema in the arms, resulting from decreased arterial pressure
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pulmonary oedema from increased left ventricular filling
-
all answers are correct
Questão 36
Questão
Which of the following drugs improves cardiac efficiency by slowing the heart rate and increasing the force of cardiac contractions?
Responda
-
Digoxin
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epinephrine
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furosemide
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Nifedipine
Questão 37
Questão
Compensation mechanisms for decreased cardiac output in cases of congestive heart failure include:
Responda
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increased renin and aldosterone secretions
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Slow cardiac contractions
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Fatigue and cold intolerance
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Decreased erythropoietin secretion
Questão 38
Questão
A 72-year-old female has history of right heart failure caused by a right ventricular myocardial infarction. which of the following symptoms are directly related to her heart failure?
Responda
-
significant oedema to both lower legs and feet
-
Decreased urine output
-
hypertension
-
pulmonary congestion
Questão 39
Questão
You are looking after a 61-year-old male who has presented with a new onset of atrial fibrilation. which of the following courses of treatment would you most likely expect the attending physician to initiate?
Responda
-
Intermediate cardioversion followed by surgery to correct the atrial defect
-
anticoagulants and beta-blockers to control rate
-
Anti hypertensives and constant cardiac monitoring in a high acuity unit
-
Calcium channel blockers and beta blockers to prolong QRS complex
Questão 40
Questão
A number of patients in an acute cardiac care unit of a hospital have diagnoses of impaired cardiac conduction. Which of the following patients is most deserving of immediate medical attention?
Responda
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A 69-year-old who has entered ventricular fibrillation
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a 60-year-old women who has just been diagnosed with a first degree AV block
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A 60-Year-Old male with premature ventricular contractions (PVC) and a history of atrial fibrillation
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A 46-year-old man whose ECG shows him to be in ventricular tachycardia
Questão 41
Questão
Pericarditis may be caused by (choose the most correct answer)
1. infection
2. autoimmune conditions
3. Injury
4. Malignant neoplasm
Responda
-
1, 2.
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1,3, 4
-
1, 2, 3, 4
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3, 4
Questão 42
Questão
Pericarditis causes a reduction in cardiac output as a result of the following?
Responda
-
Weak myocardial contractions due to friction rub.
-
Delays in the conduction system interfering with cardiac rhythm
-
Excess fluid in the pericardial cavity, which decreases ventricular filling
-
incompetent valves,, which affect regurgitation of blood
Questão 43
Questão
A patient who is experiencing some angina associated with tachycardia has been placed on verapamil, a calcium channel blocker. Knowing the mechanism of action of this medication, you should assess the patient for which of the following adverse reactions.
Responda
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Bradycardia
-
sudden asytole
-
increased cardiac output
-
ventricular tachycardia
Questão 44
Questão
Which of the following would you not expect to be administered to a patient suffering heart failure?
Responda
-
Beta-agonist
-
ACE inhibitor
-
digoxin
-
diuretic
Questão 45
Questão
All but one of the following are signs of congestive heart failure EXCEPT:
Responda
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Polyuria
-
Muscle fatigue
-
oedema
-
cough
Questão 46
Questão
In which blood vessels will failure of the left ventricle caused increased hydrostatic pressure?
Responda
-
Pulmonary capillaries
-
Veins of the legs and feet
-
jugular veins
-
blood vessels of the liver and spleen
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