CCRN Barron/Elsevier practice test questions WITH
ANSWERS 2026 UPDATE
ADH - Correct Answer Phenytoin inhibits _______ secretion
Right - Correct Answer Most episodes of aspiration result in (right/left) lung infiltrates.
urine creatinine clearance - Correct Answer Best indicator of GFR
Auto-PEEP - Correct Answer In a vented patient with status asthmaticus, check for
_______________
Air trapping - Correct Answer An increase in auto-PEEP is a sign of _________________.
obstructive pulmonary disease - Correct Answer A patient with a flattened diaphragm on a
Chest X-ray and decreased expiratory flow rate most likely has what type of disease?
II and V1 - Correct Answer ____ and ______ are the two best P wave leads.
wide, notched P waves - Correct Answer What is a manifestation of left atrial enlargement on
an EKG in lead II?
normal - Correct Answer Diphasic P waves in lead V1 on 12-lead EKG are abnormal/normal.
,myoglobin - Correct Answer _________ is the earliest cardiac biomarker for a MI (elevated
within 3hrs s/p MI) and is nonspecific.
pleurodesis - Correct Answer injection of a sclerosing agent into the pleural space and is used
for pleural effusion
LAD - Correct Answer The__________ coronary artery supplies the bundle of His and bundle
branches
anterior (LAD affected) - Correct Answer _____________ MIs may cause blocks of the bundle of
His or bundle branches
Right Coronary Artery (RCA)... LCA in 10% of ppl - Correct Answer Type I AV block, also called
Wenckebach, is a block at the AV node, and the AV node is supplied by the
___________________ (in 90% of people)
sinus - Correct Answer the ____________ node is supplied by the RCA in 55% of ppl and LCA in
45%
pale and shiny - Correct Answer The skin changes associated with chronic peripheral arterial
disease
pain, pallor, pulselessness, paresthesia, paralysis, and polar (cold) - Correct Answer what are
the 6 Ps of acute arterial occlusion?
less - Correct Answer There is (more/less) risk of burning of the skin with biphasic waveform
defibrillation than with monophasic.
,necrosis - Correct Answer adding too much air to a ETT cuff can cause overinflation and
tracheal ______________.
myocardial infarction (MI) - Correct Answer What is the most common cause of death after
vascular surgery?
CAD - Correct Answer Because atherosclerosis does not occur in one vessel, patients requiring
vascular surgery are likely also to have ___________________________.
dissecting aortic aneurysm - Correct Answer The first diagnostic test should be a CXR film for
probable diagnosis. The film would reveal a widening mediastinum. An additional, more
indicative finding would be calcified aortic knob with extension of the aortic wall.
left - Correct Answer A wide, notched P wave is an indication of ________ atrial enlargement.
P mitrale - Correct Answer Left atrial enlargement causes the P wave to be wide (greater than
0.1 second) and notched. This sometimes is referred to as ___ __________.
mitral - Correct Answer ___________ valve stenosis causes LA enlargement and wide, notched
P Waves
RCA (as seen in inferior wall MIs) - Correct Answer SA blocks, second-degree AV block type I,
and third-degree AV heart block at the level of the AV node would occur in _______________
occlusion
left - Correct Answer The anterolateral heart wall is supplied by the ______ coronary artery
right - Correct Answer The SA node and the atrioventricular (AV) node are supplied by the
________ coronary artery in most hearts.
, AV - Correct Answer second degree Type I AV block is located anatomically at the _____ node
Bundle of His - Correct Answer Second degree AV block Type II is located anatomically at the
________________.
junctional escape - Correct Answer A third-degree AV heart block would have to be blocked
above the bundle of His to have what kind of rhythm?
erythropoietin (EPO) - Correct Answer The hypoxemia that results from COPD causes release of
_______________ from the kidney, which stimulates release of red blood cells from the bone
marrow and polycythemia
COPD causes pulmonary hypertension, right ventricular hypertrophy, and right atrial
enlargement. The right atrial enlargement causes stretching of the atrial tissue and frequently
results in atrial dysrhythmias. - Correct Answer How does COPD result in atrial fibrillation and
predisposition to PEs?
Nitrates - Correct Answer ___________ are used primarily as antispasmodics in cath lab
patients.
widened - Correct Answer (Widened/narrowed) pulse pressure is associated with aortic
regurgitation
narrowed - Correct Answer (Widened/narrowed) pulse pressure is associated with mitral
regurgitation
diastolic - Correct Answer mitral stenosis causes a (systolic/diastolic) murmur.
ANSWERS 2026 UPDATE
ADH - Correct Answer Phenytoin inhibits _______ secretion
Right - Correct Answer Most episodes of aspiration result in (right/left) lung infiltrates.
urine creatinine clearance - Correct Answer Best indicator of GFR
Auto-PEEP - Correct Answer In a vented patient with status asthmaticus, check for
_______________
Air trapping - Correct Answer An increase in auto-PEEP is a sign of _________________.
obstructive pulmonary disease - Correct Answer A patient with a flattened diaphragm on a
Chest X-ray and decreased expiratory flow rate most likely has what type of disease?
II and V1 - Correct Answer ____ and ______ are the two best P wave leads.
wide, notched P waves - Correct Answer What is a manifestation of left atrial enlargement on
an EKG in lead II?
normal - Correct Answer Diphasic P waves in lead V1 on 12-lead EKG are abnormal/normal.
,myoglobin - Correct Answer _________ is the earliest cardiac biomarker for a MI (elevated
within 3hrs s/p MI) and is nonspecific.
pleurodesis - Correct Answer injection of a sclerosing agent into the pleural space and is used
for pleural effusion
LAD - Correct Answer The__________ coronary artery supplies the bundle of His and bundle
branches
anterior (LAD affected) - Correct Answer _____________ MIs may cause blocks of the bundle of
His or bundle branches
Right Coronary Artery (RCA)... LCA in 10% of ppl - Correct Answer Type I AV block, also called
Wenckebach, is a block at the AV node, and the AV node is supplied by the
___________________ (in 90% of people)
sinus - Correct Answer the ____________ node is supplied by the RCA in 55% of ppl and LCA in
45%
pale and shiny - Correct Answer The skin changes associated with chronic peripheral arterial
disease
pain, pallor, pulselessness, paresthesia, paralysis, and polar (cold) - Correct Answer what are
the 6 Ps of acute arterial occlusion?
less - Correct Answer There is (more/less) risk of burning of the skin with biphasic waveform
defibrillation than with monophasic.
,necrosis - Correct Answer adding too much air to a ETT cuff can cause overinflation and
tracheal ______________.
myocardial infarction (MI) - Correct Answer What is the most common cause of death after
vascular surgery?
CAD - Correct Answer Because atherosclerosis does not occur in one vessel, patients requiring
vascular surgery are likely also to have ___________________________.
dissecting aortic aneurysm - Correct Answer The first diagnostic test should be a CXR film for
probable diagnosis. The film would reveal a widening mediastinum. An additional, more
indicative finding would be calcified aortic knob with extension of the aortic wall.
left - Correct Answer A wide, notched P wave is an indication of ________ atrial enlargement.
P mitrale - Correct Answer Left atrial enlargement causes the P wave to be wide (greater than
0.1 second) and notched. This sometimes is referred to as ___ __________.
mitral - Correct Answer ___________ valve stenosis causes LA enlargement and wide, notched
P Waves
RCA (as seen in inferior wall MIs) - Correct Answer SA blocks, second-degree AV block type I,
and third-degree AV heart block at the level of the AV node would occur in _______________
occlusion
left - Correct Answer The anterolateral heart wall is supplied by the ______ coronary artery
right - Correct Answer The SA node and the atrioventricular (AV) node are supplied by the
________ coronary artery in most hearts.
, AV - Correct Answer second degree Type I AV block is located anatomically at the _____ node
Bundle of His - Correct Answer Second degree AV block Type II is located anatomically at the
________________.
junctional escape - Correct Answer A third-degree AV heart block would have to be blocked
above the bundle of His to have what kind of rhythm?
erythropoietin (EPO) - Correct Answer The hypoxemia that results from COPD causes release of
_______________ from the kidney, which stimulates release of red blood cells from the bone
marrow and polycythemia
COPD causes pulmonary hypertension, right ventricular hypertrophy, and right atrial
enlargement. The right atrial enlargement causes stretching of the atrial tissue and frequently
results in atrial dysrhythmias. - Correct Answer How does COPD result in atrial fibrillation and
predisposition to PEs?
Nitrates - Correct Answer ___________ are used primarily as antispasmodics in cath lab
patients.
widened - Correct Answer (Widened/narrowed) pulse pressure is associated with aortic
regurgitation
narrowed - Correct Answer (Widened/narrowed) pulse pressure is associated with mitral
regurgitation
diastolic - Correct Answer mitral stenosis causes a (systolic/diastolic) murmur.
