CCRN EXAM 2025 NEWEST VERIFIED
QUESTIONS AND CORRECT DETAILED
ANSWERS WITH RATIONALES ALREADY
GRADED A+
An 18 year old is admitted with a history of syncopal episode at the mall and has a
history of an eating disorder. The nurse notes a prolonged qt on the 12-lead ekg and
anticipates a reduction in an electrolyte to be the cause. Which of the following is
Least likely to cause this patient's problems?
(A) Sodium
(B) Magnesium
(C) Potassium
(D) Calcium - answer- (a) abnormal sodium does not cause qt prolongation. In contrast,
a low magnesium, potassium, or calcium, may cause qt prolongation and may result
in torsades de pointes ventricular tachycardia and, if self-limiting, transient syncopal
episodes.
On the third day after admission for acute mi, a 67 year old male complains of chest
pain and develops a fever. The pain is worse with deep inspiration and is relieved when
he leans forward. There are nonspecific st changes in the precordial leads of the ekg.
The nurse anticipates that the patient will most likely need treatment for:
(A) Thoracic aneurysm
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(B) Dressler's syndrome
(C) Reinfarction
(D) Pleuritis - answer- (b) the pain described in the scenario is typical of the pain
caused by pericarditis. Dressler's syndrome is the pericarditis that may result after
an acute mi.
A patient is admitted to the ccu after a pci with stent. Femoral sheath is in place, site is
dry with no hematoma. He suddenly complains of severe back pain. Neck veins are flat
with head of bed 30 degrees, heart sounds are normal. Vital signs are bp 78/48, hr
124 and rr 26. What should the nurse suspect?
(A) Cardiac tamponade
(B) Retroperitoneal bleeding
(C) Coronary artery dissection
(D) Acute closure of the stented coronary artery - answer- (b) retroperitoneal bleeding
may cause signs of hypovolemia and hypovolemic shock as described in the
scenario. It may be a complication of a pci if the femoral artery is the access site
during the procedure. Only this problem results in severe back pain; none of the
other 3 choices results in back pain
Your patient admitted with an nstemi develops acute shortness of breath, recurrence of
chest pain, and a loud systolic murmur at the apex of the heart. Which of the following
has most likely occurred?
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(A) The patient has developed acute mitral valve regurgitation
(B) The patient has developed acute infarction
(C) The patient has developed acute mitral wave stenosis
(D) The patient has developed acute ventricular septal defect - answer- (a) the location
of the murmur, at the apex of the heart (midclavicular, 5th ics), is one clue to this
answer. In addition, regurgitation occurs when the valve should be closed and the
mitral valve should be closed during systole. Mitral stenosis, choice (c), occurs
when the mitral valve is open. Additionally, mitral stenosis cannot be acute, it
develops gradually.
A patient has just returned from the or after insertion of a vvi pacemaker. In order to
assess function of this pacemaker accurately, the nurse needs to understand that: (a)
both atrium and ventricle are paced and sensed and may either inhibit or pace in
response to sensing
(B) The ventricle is paced, ventricular activity is sensed and pacing is inhibited in
response to ventricular sensing.
(C) Both the atrium and ventricle are paced, but only ventricular pacing can be
inhibited by a sensed intrinsic ventricular impulse.
(D) The ventricle is paced in response to a sensed intrinsic atrial impulse or
inhibited by a sensed intrinsic ventricular impulse. - answer- (b) the first letter
indicates chamber paced (ventricle). The second letter indicates chamber sensed
(ventricle). The third letter indicates the response to sensing (inhibited in response to
sensing).
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A patient complains of sudden dyspnea 5 days s/p acute mi (st elevation in ii, iii, and
avf, with st depression in i and avl). The patient is anxious, diaphoretic, and
hypotensive. Examination reveals the development of a loud holosystolic murmur at the
apex. What is the most likely cause of this patient's deterioration?
(A) Right ventricular failure related to right ventricular mi
(B) Ventricular septal defect
(C) Left ventricular failure due to extension of mi
(D) Acute mitral regurgitation due to papillary muscle rupture or dysfunction - answer-
(d) the scenario describes a patient having an acute inferior wall mi, which is
generally due to occlusion of the rca. The rca occlusion may result in papillary
muscle dysfunction or rupture of the mitral valve because it supplies the area of the
left ventricle where this valve is attached. Although rv infarct could result with rca
occlusion, rv infarct does not result in a systolic murmur at apex of the heart or lung
crackles.
When providing care to a bariatric patient, the best weight to use for the tidal volume for
the ventilator settings and propofol dosing is? - answer- ideal body weight
A woman presents to the icu with vaginal bleeding at 35 weeks gestation. A d-dimer
and fibrinogen levels are ordered. The nurse draws these blood tests with the
knowledge that:
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