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PERFUSION- EXAM 1 QUESTIONS AND ANSWERS 100% SOLVED
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Exam of 15 pages for the course Perfusion at Perfusion (PERFUSION- EXAM 1)
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PERFUSION- EXAM 1The pericardium is: - answer A membranous sac that encloses the heart
Local myogenic regulation of blood vessel diameter and thus blood flow through a
vessel is an example of: - answer autoregulation
Which chamber of the heart generates the highest pressure? - answer left ventricle
The cardiac electrical impulse normally begins spontaneously in the sinoatrial (SA) node
because it: - answer Depolarizes more rapidly than other automatic cells of the heart
Blood flow is affected by - answer Blood viscosity, blood vessel diameter and length,
blood pressure,
As a result of a blockage in the pulmonary artery, blood would first back up in the: -
answer Right ventricle
The primary cardiovascular control center is located in the: - answer medulla
What structure conducts action potentials down the atrioventricular septum? -
answerBundle of His
What is the nurse monitoring when observing the QRS complex on the
electrocardiogram. - answerVentricular activity
What represents the sum of all ventricular muscle cell depolarization - answerQRS
complex
A 50-year-old received trauma to the chest that caused severe impairment of the
primary pacemaker cells of the heart. Which of the following areas received the greatest
damage? - answerSinoatrial (SA) node
A nurse is discussing the pressure generated at the end of diastole. Which term is the
nurse describing? - answerpreload
A nurse is evaluating stroke volume. Which of the following factors affect stroke
volume? - answerPreload, afterload, contractility
A nurse observes the cardiologist multiplying the heart rate by the stroke volume. What
is the cardiologist measuring. - answercardiac output
, A 75-year-old male has severe chest pain and dials 911. Based upon the lab findings
indicating the patient has high levels of cardiac troponins I and T, the nurse suspects
which of the following has occurred. - answerMyocardial infarction
A 49-year-old male presents reporting chest pain. ECG reveals ST elevation. He is
diagnosed with myocardial ischemia. Which of the following interventions would be most
beneficial. - answerApply oxygen to increase myocardial oxygen supply
When a patient is diagnosed with coronary artery disease, the nurse assessed for
myocardial - answerIschemia
The nurse realizes the patient diagnosed with mitral stenosis has incomplete emptying
of the: - answerLeft atrium
A 67-year-old was previously diagnosed with rheumatic heart disease. Tests now reveal
lipoprotein deposition with chronic inflammation that impairs the blood flow from the left
ventricle into the aorta. Which diagnosis does this history report. - answerAortic stenosis
A thirty five year old presents with pulmonary hypertension and is diagnosed as being in
right heart failure.
Which is most likely cause of this condition? - answerTricuspid Regurgitation
Which characteristic changes should the nurse keep in mind when caring for a patient
with left heart failure? As left heart failure progresses? - answerLeft ventricular preload
increases
65-year-old male is diagnosed with chronic pulmonary disease and elevated pulmonary
vascular resistance. Which of the following heart failures should the nurse assess for in
this patient? - answerright heart failure
A 73 year old has increased pulmonary pressure resulting in right heart failure. A
potential cause for the right heart to fail is: - answerLeft heart failure
What term is used to describe the patent opening between the aorta and the pulmonary
artery in the fetus? - answerductus arteriosus
A newborn experiences frequent periods of cyanosis, usually occurring during crying or
after feeding. Which of the following is the most likely diagnosis the nurse will observe
on the chart? - answerCorrect Answer: Tetralogy of Fallot
Response Feedback:
Infants with tetralogy of Fallot experience cyanosis after crying or during feeding.
A newborn is severely cyanotic. An echocardiogram reveals transposition of the great
arteries. What is the characteristic defect associated with this condition? - answerThe
aorta leaving the right ventricle
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