ALL PCCN ACTUAL EXAM NEWEST VERSION 2026-
2027
ACTUAL QUESTION AND CORRECT DETAILED
ANSWERS RATED A GRADE.
Your patient was admitted for malaise, severe dyspnea, and had a
syncopal episode at work. He states he has a midline burning
sensation in his chest that worsens when he is supine. You suspect?
CORRECT ANS: MYOCARDITIS.
Expert Rationale: The patient's presentation—malaise, severe
dyspnea, syncope, and midline chest pain that worsens when
supine—is classic for myocarditis. The pain when supine is a cardinal
sign, often due to pericardial involvement. Other findings may include
a recent respiratory infection, and auscultation may reveal an S3, S4,
or pericardial friction rub. Myocarditis is an inflammatory process of
the myocardium, often viral in origin, and can lead to significant
cardiac dysfunction.
A definitive diagnosis of myocarditis can be made via?
CORRECT ANS: ENDOMYOCARDIAL BIOPSY.
Expert Rationale: An endomyocardial biopsy is the only definitive
method to diagnose myocarditis. This invasive procedure involves
obtaining a small tissue sample from the heart muscle, which is then
examined for inflammatory infiltrates and myocyte necrosis. While
other tests (like cardiac MRI and elevated cardiac enzymes) can
,support the diagnosis, only a biopsy provides conclusive evidence. The
procedure is typically performed via the right internal jugular vein.
The volume of fluid required to cause a pericardial tamponade is?
CORRECT ANS: 50-75 ml of blood.
Expert Rationale: Acute pericardial tamponade can occur with as little
as 50 to 75 mL of fluid accumulating rapidly in the pericardial sac. This
small volume can raise intrapericardial pressure to equal or exceed
atrial and ventricular pressures, severely impairing cardiac filling and
output. In chronic conditions, the pericardium can stretch, allowing
up to 2000 mL to accumulate before symptoms appear.
Beck's triad is a combination of symptoms useful in diagnosing
cardiac tamponade. They are?
CORRECT ANS: Distended neck veins; Muffled heart sounds;
Hypotension.
Expert Rationale: Beck's triad consists of three classic signs of cardiac
tamponade: distended neck veins (from elevated central venous
pressure), muffled heart sounds (due to fluid dampening sound
transmission), and hypotension (from reduced cardiac output).
Tachycardia is an early compensatory sign. A narrowed pulse pressure
occurs as stroke volume falls. The muffled heart sounds are a key
physical finding.
Which of the following hemodynamic changes will occur with
cardiac tamponade?
,• Increased cardiac output
• Stroke volume decrease
• Contractility increases
• Decreased heart rate
CORRECT ANS: STROKE VOLUME DECREASE.
Expert Rationale: In cardiac tamponade, the heart cannot adequately
fill or eject its contents because of external compression. This leads to
a decrease in stroke volume (SV) and subsequently a decreased
cardiac output (CO). Contractility decreases because the myocardium
cannot stretch effectively, and the heart rate typically increases
(tachycardia) as a compensatory mechanism.
If your patient had a cardiac tamponade, what would you expect to
see on a chest X-ray (CXR)?
CORRECT ANS: A DILATED SUPERIOR VENA CAVA.
Expert Rationale: In cardiac tamponade, a CXR may show a dilated
superior vena cava because blood cannot flow easily into the right
atrium, causing venous congestion. Other findings can include a
widened mediastinum and an enlarged cardiac silhouette ("water
bottle heart"). Jugular venous distention (JVD) is a clinical sign, not
visible on CXR.
Your patient was admitted for severe dyspnea, dysphagia,
palpitations, and an intractable cough. On auscultation, you hear a
loud S1 and a right-sided S3 and S4. This patient probably has?
CORRECT ANS: MITRAL STENOSIS.
, Expert Rationale: The patient's symptoms (dyspnea, dysphagia,
palpitations, cough) and auscultatory findings (loud S1, right-sided S3
and S4) are characteristic of mitral stenosis. The loud S1 is due to the
forceful closure of the stenotic mitral valve. The right-sided S3 and S4
indicate elevated right-sided pressures, a consequence of pulmonary
hypertension from left atrial hypertension. Dysphagia may occur from
esophageal compression by an enlarged left atrium.
Quincke's sign is usually seen in what condition?
CORRECT ANS: AORTIC INSUFFICIENCY.
Expert Rationale: Quincke's sign is a physical finding in aortic
insufficiency (aortic regurgitation). It is elicited by pressing on the
fingertip, causing a visible pulsation of the nail bed. This sign results
from a rapid, hard pulse followed by a sudden collapse as blood flows
back through the incompetent aortic valve, leading to a bounding
pulse.
In patients with aortic insufficiency, the popliteal BP is often higher
than the brachial BP by at least 40 mm Hg. This discrepancy between
the measurements is known as?
CORRECT ANS: HILL'S SIGN.
Expert Rationale: Hill's sign is a positive finding in aortic insufficiency
when the popliteal blood pressure exceeds the brachial pressure by
40 mm Hg or more. This reflects the rapid rise in pulsation caused by
the regurgitant flow. DeMusset's sign—head bobbing in time with the
pulse—is also associated with aortic insufficiency.
2027
ACTUAL QUESTION AND CORRECT DETAILED
ANSWERS RATED A GRADE.
Your patient was admitted for malaise, severe dyspnea, and had a
syncopal episode at work. He states he has a midline burning
sensation in his chest that worsens when he is supine. You suspect?
CORRECT ANS: MYOCARDITIS.
Expert Rationale: The patient's presentation—malaise, severe
dyspnea, syncope, and midline chest pain that worsens when
supine—is classic for myocarditis. The pain when supine is a cardinal
sign, often due to pericardial involvement. Other findings may include
a recent respiratory infection, and auscultation may reveal an S3, S4,
or pericardial friction rub. Myocarditis is an inflammatory process of
the myocardium, often viral in origin, and can lead to significant
cardiac dysfunction.
A definitive diagnosis of myocarditis can be made via?
CORRECT ANS: ENDOMYOCARDIAL BIOPSY.
Expert Rationale: An endomyocardial biopsy is the only definitive
method to diagnose myocarditis. This invasive procedure involves
obtaining a small tissue sample from the heart muscle, which is then
examined for inflammatory infiltrates and myocyte necrosis. While
other tests (like cardiac MRI and elevated cardiac enzymes) can
,support the diagnosis, only a biopsy provides conclusive evidence. The
procedure is typically performed via the right internal jugular vein.
The volume of fluid required to cause a pericardial tamponade is?
CORRECT ANS: 50-75 ml of blood.
Expert Rationale: Acute pericardial tamponade can occur with as little
as 50 to 75 mL of fluid accumulating rapidly in the pericardial sac. This
small volume can raise intrapericardial pressure to equal or exceed
atrial and ventricular pressures, severely impairing cardiac filling and
output. In chronic conditions, the pericardium can stretch, allowing
up to 2000 mL to accumulate before symptoms appear.
Beck's triad is a combination of symptoms useful in diagnosing
cardiac tamponade. They are?
CORRECT ANS: Distended neck veins; Muffled heart sounds;
Hypotension.
Expert Rationale: Beck's triad consists of three classic signs of cardiac
tamponade: distended neck veins (from elevated central venous
pressure), muffled heart sounds (due to fluid dampening sound
transmission), and hypotension (from reduced cardiac output).
Tachycardia is an early compensatory sign. A narrowed pulse pressure
occurs as stroke volume falls. The muffled heart sounds are a key
physical finding.
Which of the following hemodynamic changes will occur with
cardiac tamponade?
,• Increased cardiac output
• Stroke volume decrease
• Contractility increases
• Decreased heart rate
CORRECT ANS: STROKE VOLUME DECREASE.
Expert Rationale: In cardiac tamponade, the heart cannot adequately
fill or eject its contents because of external compression. This leads to
a decrease in stroke volume (SV) and subsequently a decreased
cardiac output (CO). Contractility decreases because the myocardium
cannot stretch effectively, and the heart rate typically increases
(tachycardia) as a compensatory mechanism.
If your patient had a cardiac tamponade, what would you expect to
see on a chest X-ray (CXR)?
CORRECT ANS: A DILATED SUPERIOR VENA CAVA.
Expert Rationale: In cardiac tamponade, a CXR may show a dilated
superior vena cava because blood cannot flow easily into the right
atrium, causing venous congestion. Other findings can include a
widened mediastinum and an enlarged cardiac silhouette ("water
bottle heart"). Jugular venous distention (JVD) is a clinical sign, not
visible on CXR.
Your patient was admitted for severe dyspnea, dysphagia,
palpitations, and an intractable cough. On auscultation, you hear a
loud S1 and a right-sided S3 and S4. This patient probably has?
CORRECT ANS: MITRAL STENOSIS.
, Expert Rationale: The patient's symptoms (dyspnea, dysphagia,
palpitations, cough) and auscultatory findings (loud S1, right-sided S3
and S4) are characteristic of mitral stenosis. The loud S1 is due to the
forceful closure of the stenotic mitral valve. The right-sided S3 and S4
indicate elevated right-sided pressures, a consequence of pulmonary
hypertension from left atrial hypertension. Dysphagia may occur from
esophageal compression by an enlarged left atrium.
Quincke's sign is usually seen in what condition?
CORRECT ANS: AORTIC INSUFFICIENCY.
Expert Rationale: Quincke's sign is a physical finding in aortic
insufficiency (aortic regurgitation). It is elicited by pressing on the
fingertip, causing a visible pulsation of the nail bed. This sign results
from a rapid, hard pulse followed by a sudden collapse as blood flows
back through the incompetent aortic valve, leading to a bounding
pulse.
In patients with aortic insufficiency, the popliteal BP is often higher
than the brachial BP by at least 40 mm Hg. This discrepancy between
the measurements is known as?
CORRECT ANS: HILL'S SIGN.
Expert Rationale: Hill's sign is a positive finding in aortic insufficiency
when the popliteal blood pressure exceeds the brachial pressure by
40 mm Hg or more. This reflects the rapid rise in pulsation caused by
the regurgitant flow. DeMusset's sign—head bobbing in time with the
pulse—is also associated with aortic insufficiency.
