Exam 4 Nur 3125 Test Quizzes All
Answered Correct 2026 Updated.
While viewing the electrocardiogram, the nurse recalls the ___________________ conducts
action potentials down the atrioventricular septum.
Sinoatrial node
Purkinje fibers
Bundle of His
Atrioventricular node - Answer Bundle of His
A nurse is discussing the degree of ventricular stretch, which is influenced by the amount of
blood return to the heart from the superior and inferior vena cava, and the length of diastole
time. Which term is the nurse describing?
Pulmonary vascular resistance
Afterload
Systemic vascular resistance
Total peripheral resistance
Preload - Answer Preload
A patient 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 nurse knows one of the two things the QRS complex reflects is:
Aortic valve closing
Pulmonary artery closure
Atrial activation
Mitral valve opening
Ventricular activation - Answer Ventricular activation
Depolarization of a cardiac muscle cell occurs as the result of:
, Stimuli instigated during the refractory period - Answer The rapid movement of ions across
the cell membrane
A nurse is evaluating how the renin-angiotensin-aldosterone system contributes to increased
afterload. Which principle should the nurse remember?
Angiotensin I promotes sodium and water reabsorption by the kidneys.
Renin promotes the excretion of sodium and water in the renal tubules.
Aldosterone increases renal excretion of water.
Angiotensin II causes systemic vasoconstriction. - Answer Angiotensin II causes systemic
vasoconstriction.
A patient develops a blood clot in the pulmonary artery. The nurse knows to monitor for signs
of:
Aortic stenosis
Right ventricle failure
BeriBeri
Left ventricle failure
Mitral valve regurgitation - Answer Right ventricle failure
A pediatric patient presents with this condition that increases pulmonary blood flow resulting
from abnormalities in the AV septum and valves, manifested by a mid-diastolic murmur
auscultated over the pulmonic valve.
coarctation of the aorta
atrioventricular canal defect
Tetralogy of Fallot
atrioseptal defect
ventricular septal defect - Answer atrioventricular canal defect
This pediatric obstructive stenotic disorder is characterized by high systolic left ventricular
pressures, and poor perfusion in the lower half of the body.
Answered Correct 2026 Updated.
While viewing the electrocardiogram, the nurse recalls the ___________________ conducts
action potentials down the atrioventricular septum.
Sinoatrial node
Purkinje fibers
Bundle of His
Atrioventricular node - Answer Bundle of His
A nurse is discussing the degree of ventricular stretch, which is influenced by the amount of
blood return to the heart from the superior and inferior vena cava, and the length of diastole
time. Which term is the nurse describing?
Pulmonary vascular resistance
Afterload
Systemic vascular resistance
Total peripheral resistance
Preload - Answer Preload
A patient 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 nurse knows one of the two things the QRS complex reflects is:
Aortic valve closing
Pulmonary artery closure
Atrial activation
Mitral valve opening
Ventricular activation - Answer Ventricular activation
Depolarization of a cardiac muscle cell occurs as the result of:
, Stimuli instigated during the refractory period - Answer The rapid movement of ions across
the cell membrane
A nurse is evaluating how the renin-angiotensin-aldosterone system contributes to increased
afterload. Which principle should the nurse remember?
Angiotensin I promotes sodium and water reabsorption by the kidneys.
Renin promotes the excretion of sodium and water in the renal tubules.
Aldosterone increases renal excretion of water.
Angiotensin II causes systemic vasoconstriction. - Answer Angiotensin II causes systemic
vasoconstriction.
A patient develops a blood clot in the pulmonary artery. The nurse knows to monitor for signs
of:
Aortic stenosis
Right ventricle failure
BeriBeri
Left ventricle failure
Mitral valve regurgitation - Answer Right ventricle failure
A pediatric patient presents with this condition that increases pulmonary blood flow resulting
from abnormalities in the AV septum and valves, manifested by a mid-diastolic murmur
auscultated over the pulmonic valve.
coarctation of the aorta
atrioventricular canal defect
Tetralogy of Fallot
atrioseptal defect
ventricular septal defect - Answer atrioventricular canal defect
This pediatric obstructive stenotic disorder is characterized by high systolic left ventricular
pressures, and poor perfusion in the lower half of the body.
