NUSC-1P30 Exam questions with
verified solutions to pass
The first heart sound is produced by the: - correct answer ✔✔Closure of the atrioventricular
(AV) valves.
-The first heart sound (S1) occurs with closure of the AV valves.
Which of the following guidelines can be used to identify which heart sound is S1? - correct
answer ✔✔S1 coincides with the carotid artery pulse.
The ability of the heart to contract independently of any signals or stimulation is caused by: -
correct answer ✔✔automaticity.
pThe heart can contract by itself, independent of any signals or stimulation from the body; this
property is termed automaticity.
When auscultating the heart of a newborn within 24 hours after birth, the examiner hears a
continuous sound that mimics the sound of a machine. This finding most likely indicates: -
correct answer ✔✔a normal sound because of the thinner chest wall of the newborn.
-The murmur of a patent ductus arteriosus is a continuous machinery murmur; the ductus
arteriosus usually closes within 10 to 15 hours of birth but may take up to 48 hours.
A bruit heard while auscultating the carotid artery of a 65-year-old patient is caused by: -
correct answer ✔✔turbulent blood flow through the carotid artery.
-A carotid bruit is a blowing, swishing sound indicating blood flow turbulence. A bruit indicates
atherosclerotic narrowing of the vessel.
The jugular venous pressure is an indirect reflection of the: - correct answer ✔✔heart's
efficiency as a pump.
, -Jugular venous pressure is a reflection of the heart's ability to pump blood. If the pressure is
elevated, heart failure is suspected.
The semilunar valves separate the: - correct answer ✔✔ventricles from the arteries.
-The semilunar valves separate the ventricles from the arteries. The AV valves separate the atria
and ventricles.
Which of the following cardiac alterations occurs during pregnancy? - correct answer ✔✔An
increase in cardiac volume and a decrease in blood pressure
-During pregnancy, the blood volume increases by 30% to 40%; this creates an increase in stroke
volume and cardiac output, and an increased pulse rate of 10 to 15 beats per minute. The
arterial blood pressure decreases in pregnancy as a result of peripheral vasodilation.
Which of the following is an appropriate position to have the patient assume when auscultating
for extra heart sounds or murmurs? - correct answer ✔✔Roll toward the left side
-After auscultation in the supine position, the nurse should have the patient roll onto the left
side; the examiner should listen at the apex with the bell for the presence of any diastolic filling
sounds (i.e., S3 or S4) or murmurs that may be heard only in this position. The examiner should
have the patient sit up, lean forward and exhale; the examiner should auscultate at the base
with the diaphragm for a soft, high-pitched, early diastolic murmur of aortic or pulmonic
regurgitation.
The leaflets of the tricuspid and mitral valves are anchored by __________________ to the
_________________, which are embedded in the ventricular floor. - correct answer
✔✔chordae tendineae; papillary muscles
-The valves are anchored by collagenous fibres (chordae tendineae) to the papillary muscles,
which are embedded in the ventricle floor.
One of the leg's deep veins is the: - correct answer ✔✔perforator vein.
verified solutions to pass
The first heart sound is produced by the: - correct answer ✔✔Closure of the atrioventricular
(AV) valves.
-The first heart sound (S1) occurs with closure of the AV valves.
Which of the following guidelines can be used to identify which heart sound is S1? - correct
answer ✔✔S1 coincides with the carotid artery pulse.
The ability of the heart to contract independently of any signals or stimulation is caused by: -
correct answer ✔✔automaticity.
pThe heart can contract by itself, independent of any signals or stimulation from the body; this
property is termed automaticity.
When auscultating the heart of a newborn within 24 hours after birth, the examiner hears a
continuous sound that mimics the sound of a machine. This finding most likely indicates: -
correct answer ✔✔a normal sound because of the thinner chest wall of the newborn.
-The murmur of a patent ductus arteriosus is a continuous machinery murmur; the ductus
arteriosus usually closes within 10 to 15 hours of birth but may take up to 48 hours.
A bruit heard while auscultating the carotid artery of a 65-year-old patient is caused by: -
correct answer ✔✔turbulent blood flow through the carotid artery.
-A carotid bruit is a blowing, swishing sound indicating blood flow turbulence. A bruit indicates
atherosclerotic narrowing of the vessel.
The jugular venous pressure is an indirect reflection of the: - correct answer ✔✔heart's
efficiency as a pump.
, -Jugular venous pressure is a reflection of the heart's ability to pump blood. If the pressure is
elevated, heart failure is suspected.
The semilunar valves separate the: - correct answer ✔✔ventricles from the arteries.
-The semilunar valves separate the ventricles from the arteries. The AV valves separate the atria
and ventricles.
Which of the following cardiac alterations occurs during pregnancy? - correct answer ✔✔An
increase in cardiac volume and a decrease in blood pressure
-During pregnancy, the blood volume increases by 30% to 40%; this creates an increase in stroke
volume and cardiac output, and an increased pulse rate of 10 to 15 beats per minute. The
arterial blood pressure decreases in pregnancy as a result of peripheral vasodilation.
Which of the following is an appropriate position to have the patient assume when auscultating
for extra heart sounds or murmurs? - correct answer ✔✔Roll toward the left side
-After auscultation in the supine position, the nurse should have the patient roll onto the left
side; the examiner should listen at the apex with the bell for the presence of any diastolic filling
sounds (i.e., S3 or S4) or murmurs that may be heard only in this position. The examiner should
have the patient sit up, lean forward and exhale; the examiner should auscultate at the base
with the diaphragm for a soft, high-pitched, early diastolic murmur of aortic or pulmonic
regurgitation.
The leaflets of the tricuspid and mitral valves are anchored by __________________ to the
_________________, which are embedded in the ventricular floor. - correct answer
✔✔chordae tendineae; papillary muscles
-The valves are anchored by collagenous fibres (chordae tendineae) to the papillary muscles,
which are embedded in the ventricle floor.
One of the leg's deep veins is the: - correct answer ✔✔perforator vein.
