2
NU551 Unit 6 Exam with accurate detailed solutions || || || || || || ||
A 65-year-old male is transported to the ER for chest pain. An electrocardiogram reveals a
|| || || || || || || || || || || || || || ||
prolonged QRS interval. What is the nurse monitoring when the nurse observes the QRS complex
|| || || || || || || || || || || || || || ||
on the electrocardiogram? The QRS complex reflects:
|| || || || || ||
a. Pulmonary artery closure
|| || || ||
b. Mitral valve opening
|| || || ||
c. Aortic valve closing
|| || || ||
d. Ventricular activity - ✔✔d. VENTRICULAR ACTIVITY
|| || || || || ||
The nurse is planning care for a patient with heart problems. Which information should the nurse
|| || || || || || || || || || || || || || || ||
remember? The _____ artery travels down the interventricular septum and delivers blood to
|| || || || || || || || || || || || ||
portions of the left and right ventricle.
|| || || || || ||
a. Left anterior descending
|| || || ||
b. Right coronary
|| || ||
c. Circumflex
|| ||
d. Cardiac - ✔✔a. LEFT ANTERIOR DESCENDING
|| || || || || ||
While viewing the electrocardiogram, the nurse recalls the _____ conducts action potentials down
|| || || || || || || || || || || ||
the atrioventricular septum.
|| || ||
a. Bundle of His
|| || || ||
|| b. Atrioventricular node
|| || ||
|| c. Sinoatrial node
|| || ||
|| d. Bachmann bundle - ✔✔a. BUNDLE OF HIS
|| || || || || || ||
,2
When a student nurse asks the nurse how the cardiac electrical impulse normally begins, what is
|| || || || || || || || || || || || || || || ||
the most correct response? The cardiac electrical impulse normally begins spontaneously in the
|| || || || || || || || || || || || ||
sinoatrial (SA) node because it: || || || ||
a. Has rich sympathetic innervation via the vagus nerve
|| || || || || || || ||
b. Depolarizes more rapidly than other automatic cells of the heart
|| || || || || || || || || ||
c. Has a superior location in the right atrium
|| || || || || || || || ||
d. Is the only area of the heart capable of spontaneous depolarization - ✔✔b. DEPOLARIZES
|| || || || || || || || || || || || || || ||
MORE RAPIDLY THAN OTHER AUTOMATIC CELLS OF HEART
|| || || || || || ||
A 54-year-old male is diagnosed with left bundle branch block. Which of the following structures
|| || || || || || || || || || || || || || ||
would not receive an electrical impulse?
|| || || || ||
a. The left ventricle
|| || || ||
b. Bundle of His
|| || || ||
c. Atrioventricular (AV) node d. Sinoatrial (SA) node - ✔✔a. THE LEFT VENTRICLE
|| || || || || || || || || || || ||
A 13-year-old female took a weight loss drug that activated the sympathetic nervous system.
|| || || || || || || || || || || || || ||
Which of the following assessment findings would the nurse expect?
|| || || || || || || || ||
a. Increased intranodal conduction time
|| || || || ||
b. Increased cardiac conduction
|| || || ||
c. Decreased heart rate
|| || || ||
d. Decreased myocardial contraction - ✔✔b. INCREASED CARDIAC CONDUCTION
|| || || || || || || ||
The chamber of the heart that generates the highest pressure is the:
|| || || || || || || || || || ||
a. Right atrium
|| || ||
b. Left atrium
|| || ||
, 2
c. Right ventricle
|| || ||
d. Left ventricle - ✔✔d. LEFT VENTRICLE
|| || || || || ||
A 28-year-old female with seizure disorder has a vagus nerve stimulator implanted to help control
|| || || || || || || || || || || || || ||
seizure activity. Which of the following would the nurse also expect to occur?
|| || || || || || || || || || || || ||
a. Increased speed of cardiac cycle
|| || || || || ||
b. Decreased cardiac conduction
|| || || ||
c. Increased cardiac contractility
|| || || ||
d. Decreased vasodilation - ✔✔b. DECREASED CARDIAC CONDUCTION
|| || || || || || ||
The nurse is reviewing a normal electrocardiogram. The nurse assesses the PR interval because it
|| || || || || || || || || || || || || || ||
represents:
a. "Electrical systole" of the ventricles
|| || || || ||
b. Onset of atrial activation to onset of ventricular activity
|| || || || || || || || ||
c. Ventricular depolarization
|| || ||
d. Atrial depolarization - ✔✔b. ONSET OF ATRIAL ACTIVATION TO ONSET OF
|| || || || || || || || || || || ||
VENTRICULAR ACTIVITY ||
Which statement indicates the nurse understands blood flow? Oxygenated blood flows through
|| || || || || || || || || || || ||
the:
a. Cardiac veins
|| || ||
b. Superior vena cava
|| || || ||
c. Pulmonary artery
|| ||
d. Pulmonary veins - ✔✔d. PULMONARY VEINS
|| || || || || ||
NU551 Unit 6 Exam with accurate detailed solutions || || || || || || ||
A 65-year-old male is transported to the ER for chest pain. An electrocardiogram reveals a
|| || || || || || || || || || || || || || ||
prolonged QRS interval. What is the nurse monitoring when the nurse observes the QRS complex
|| || || || || || || || || || || || || || ||
on the electrocardiogram? The QRS complex reflects:
|| || || || || ||
a. Pulmonary artery closure
|| || || ||
b. Mitral valve opening
|| || || ||
c. Aortic valve closing
|| || || ||
d. Ventricular activity - ✔✔d. VENTRICULAR ACTIVITY
|| || || || || ||
The nurse is planning care for a patient with heart problems. Which information should the nurse
|| || || || || || || || || || || || || || || ||
remember? The _____ artery travels down the interventricular septum and delivers blood to
|| || || || || || || || || || || || ||
portions of the left and right ventricle.
|| || || || || ||
a. Left anterior descending
|| || || ||
b. Right coronary
|| || ||
c. Circumflex
|| ||
d. Cardiac - ✔✔a. LEFT ANTERIOR DESCENDING
|| || || || || ||
While viewing the electrocardiogram, the nurse recalls the _____ conducts action potentials down
|| || || || || || || || || || || ||
the atrioventricular septum.
|| || ||
a. Bundle of His
|| || || ||
|| b. Atrioventricular node
|| || ||
|| c. Sinoatrial node
|| || ||
|| d. Bachmann bundle - ✔✔a. BUNDLE OF HIS
|| || || || || || ||
,2
When a student nurse asks the nurse how the cardiac electrical impulse normally begins, what is
|| || || || || || || || || || || || || || || ||
the most correct response? The cardiac electrical impulse normally begins spontaneously in the
|| || || || || || || || || || || || ||
sinoatrial (SA) node because it: || || || ||
a. Has rich sympathetic innervation via the vagus nerve
|| || || || || || || ||
b. Depolarizes more rapidly than other automatic cells of the heart
|| || || || || || || || || ||
c. Has a superior location in the right atrium
|| || || || || || || || ||
d. Is the only area of the heart capable of spontaneous depolarization - ✔✔b. DEPOLARIZES
|| || || || || || || || || || || || || || ||
MORE RAPIDLY THAN OTHER AUTOMATIC CELLS OF HEART
|| || || || || || ||
A 54-year-old male is diagnosed with left bundle branch block. Which of the following structures
|| || || || || || || || || || || || || || ||
would not receive an electrical impulse?
|| || || || ||
a. The left ventricle
|| || || ||
b. Bundle of His
|| || || ||
c. Atrioventricular (AV) node d. Sinoatrial (SA) node - ✔✔a. THE LEFT VENTRICLE
|| || || || || || || || || || || ||
A 13-year-old female took a weight loss drug that activated the sympathetic nervous system.
|| || || || || || || || || || || || || ||
Which of the following assessment findings would the nurse expect?
|| || || || || || || || ||
a. Increased intranodal conduction time
|| || || || ||
b. Increased cardiac conduction
|| || || ||
c. Decreased heart rate
|| || || ||
d. Decreased myocardial contraction - ✔✔b. INCREASED CARDIAC CONDUCTION
|| || || || || || || ||
The chamber of the heart that generates the highest pressure is the:
|| || || || || || || || || || ||
a. Right atrium
|| || ||
b. Left atrium
|| || ||
, 2
c. Right ventricle
|| || ||
d. Left ventricle - ✔✔d. LEFT VENTRICLE
|| || || || || ||
A 28-year-old female with seizure disorder has a vagus nerve stimulator implanted to help control
|| || || || || || || || || || || || || ||
seizure activity. Which of the following would the nurse also expect to occur?
|| || || || || || || || || || || || ||
a. Increased speed of cardiac cycle
|| || || || || ||
b. Decreased cardiac conduction
|| || || ||
c. Increased cardiac contractility
|| || || ||
d. Decreased vasodilation - ✔✔b. DECREASED CARDIAC CONDUCTION
|| || || || || || ||
The nurse is reviewing a normal electrocardiogram. The nurse assesses the PR interval because it
|| || || || || || || || || || || || || || ||
represents:
a. "Electrical systole" of the ventricles
|| || || || ||
b. Onset of atrial activation to onset of ventricular activity
|| || || || || || || || ||
c. Ventricular depolarization
|| || ||
d. Atrial depolarization - ✔✔b. ONSET OF ATRIAL ACTIVATION TO ONSET OF
|| || || || || || || || || || || ||
VENTRICULAR ACTIVITY ||
Which statement indicates the nurse understands blood flow? Oxygenated blood flows through
|| || || || || || || || || || || ||
the:
a. Cardiac veins
|| || ||
b. Superior vena cava
|| || || ||
c. Pulmonary artery
|| ||
d. Pulmonary veins - ✔✔d. PULMONARY VEINS
|| || || || || ||
