JB Learning Cardiology Exam – Cardiac Function, Assessment, and Emergency Care Review
Which of the following chambers of the heart has the thickest walls? - (ANSWER)Left ventricle
It does most of the work; therefore, it has the thickest walls. A palpable pulse represents left ventricular
contraction.Because the left ventricle does most of the work for the heart, it demands and consumes a
significant amount of oxygen. This makes it the most common site for a heart attack (acute myocardial
infarction).
Which of the following would be the MOST effective way of minimizing the detrimental effects
associated with acute coronary syndrome? - (ANSWER)Transport the patient rapidly, using lights and
siren
Traveling at a high rate of speed with lights flashing and siren blasting would clearly increase the
patient's anxiety and the heart's demand for oxygen.
Nitroglycerin doses - (ANSWER)nitroglycerin should be given in 5-minute intervals, generally up to three
doses.
The wall that separates the left and right sides of the heart is called the: - (ANSWER)septum
Mediastinum - (ANSWER)the space between the lungs in which the heart, great vessels, and a portion of
the esophagus lie
pericardium - (ANSWER)the sac that surrounds the heart and contains pericardial fluid.
Following administration of nitroglycerin to a man with crushing chest pressure, he experiences a
significant increase in his heart rate. This is MOST likely the result of: - (ANSWER)a drop in blood
pressure
Nitroglycerin (NTG) is a vasodilator drug. It dilates not only the coronary arteries, but also other arteries
in the body. In some patients, NTG may cause a drop in blood pressure, especially if they are taking
other medications that cause vasodilation
, JB Learning Cardiology Exam – Cardiac Function, Assessment, and Emergency Care Review
In response to a drop in blood pressure, the nervous system attempts to compensate by increasing the
heart rate
A 50-year-old man's implanted defibrillator has fired twice within the last hour. He is conscious and alert
and complains of a "sore chest." Further assessment reveals that his chest pain is reproducible to
palpation and is localized to the area of his implanted defibrillator. Treatment for him should include: -
(ANSWER)prompt transport with continuous monitoring en route.
A 60-year-old woman presents with chest discomfort, confusion, and weakness. The patient's husband
tells you that she vomited twice before EMS arrival. The patient's BP is 70/40 mm Hg, her pulse is 45
beats/min and weak, and her respirations are 14 breaths/min and unlabored. Which of the following is
the MOST likely cause of her hypotension? - (ANSWER)bradycardia
V-Fib - (ANSWER)disorganized, chaotic quivering of the heart muscle that does not generate a pulse
In most people, the inferior aspect of the left ventricle receives its blood supply from the: -
(ANSWER)Right coronary artery
The right coronary artery (RCA) supplies blood to the entire right side of the heart; in most people, it
also supplies blood to the inferior aspect of the left ventricle.
After administering nitroglycerin to a patient with chest discomfort, it is MOST important for you to: -
(ANSWER)reassess the patient's blood pressure within 5 minutes.
After defibrillating a man in cardiac arrest, you resume CPR. As you are about to reanalyze his cardiac
rhythm 2 minutes later, your partner tells you she can definitely feel a strong carotid pulse. You should: -
(ANSWER)assess the patient's breathing effort.
If return of spontaneous circulation (ROSC) occurs, your first action should be to reassess the patient's
airway status and breathing effort. If the patient is still apneic or is breathing inadequately, continue
ventilations and frequently reassess his or her pulse.
In addition to chest pain or discomfort, a patient experiencing an acute coronary syndrome would MOST
likely present with: - (ANSWER)ashen skin color, diaphoresis, and anxiety.
Which of the following chambers of the heart has the thickest walls? - (ANSWER)Left ventricle
It does most of the work; therefore, it has the thickest walls. A palpable pulse represents left ventricular
contraction.Because the left ventricle does most of the work for the heart, it demands and consumes a
significant amount of oxygen. This makes it the most common site for a heart attack (acute myocardial
infarction).
Which of the following would be the MOST effective way of minimizing the detrimental effects
associated with acute coronary syndrome? - (ANSWER)Transport the patient rapidly, using lights and
siren
Traveling at a high rate of speed with lights flashing and siren blasting would clearly increase the
patient's anxiety and the heart's demand for oxygen.
Nitroglycerin doses - (ANSWER)nitroglycerin should be given in 5-minute intervals, generally up to three
doses.
The wall that separates the left and right sides of the heart is called the: - (ANSWER)septum
Mediastinum - (ANSWER)the space between the lungs in which the heart, great vessels, and a portion of
the esophagus lie
pericardium - (ANSWER)the sac that surrounds the heart and contains pericardial fluid.
Following administration of nitroglycerin to a man with crushing chest pressure, he experiences a
significant increase in his heart rate. This is MOST likely the result of: - (ANSWER)a drop in blood
pressure
Nitroglycerin (NTG) is a vasodilator drug. It dilates not only the coronary arteries, but also other arteries
in the body. In some patients, NTG may cause a drop in blood pressure, especially if they are taking
other medications that cause vasodilation
, JB Learning Cardiology Exam – Cardiac Function, Assessment, and Emergency Care Review
In response to a drop in blood pressure, the nervous system attempts to compensate by increasing the
heart rate
A 50-year-old man's implanted defibrillator has fired twice within the last hour. He is conscious and alert
and complains of a "sore chest." Further assessment reveals that his chest pain is reproducible to
palpation and is localized to the area of his implanted defibrillator. Treatment for him should include: -
(ANSWER)prompt transport with continuous monitoring en route.
A 60-year-old woman presents with chest discomfort, confusion, and weakness. The patient's husband
tells you that she vomited twice before EMS arrival. The patient's BP is 70/40 mm Hg, her pulse is 45
beats/min and weak, and her respirations are 14 breaths/min and unlabored. Which of the following is
the MOST likely cause of her hypotension? - (ANSWER)bradycardia
V-Fib - (ANSWER)disorganized, chaotic quivering of the heart muscle that does not generate a pulse
In most people, the inferior aspect of the left ventricle receives its blood supply from the: -
(ANSWER)Right coronary artery
The right coronary artery (RCA) supplies blood to the entire right side of the heart; in most people, it
also supplies blood to the inferior aspect of the left ventricle.
After administering nitroglycerin to a patient with chest discomfort, it is MOST important for you to: -
(ANSWER)reassess the patient's blood pressure within 5 minutes.
After defibrillating a man in cardiac arrest, you resume CPR. As you are about to reanalyze his cardiac
rhythm 2 minutes later, your partner tells you she can definitely feel a strong carotid pulse. You should: -
(ANSWER)assess the patient's breathing effort.
If return of spontaneous circulation (ROSC) occurs, your first action should be to reassess the patient's
airway status and breathing effort. If the patient is still apneic or is breathing inadequately, continue
ventilations and frequently reassess his or her pulse.
In addition to chest pain or discomfort, a patient experiencing an acute coronary syndrome would MOST
likely present with: - (ANSWER)ashen skin color, diaphoresis, and anxiety.
