MEDSURG-BC™ ACTUAL EXAM 2026/2027 | Version 1 |
Detailed Rationales | ANCC Aligned | Pass Guaranteed - A+
Graded
DOMAIN 1: ASSESSMENT AND DIAGNOSIS (30 Questions) – 20%
Q1: A 68-year-old patient with chronic heart failure presents with increasing dyspnea,
weight gain of 3 kg (6.6 lbs) in 3 days, and bilateral crackles in lung bases. Which
assessment finding requires the most immediate intervention?
A. Weight gain of 3 kg over 3 days
B. Bilateral crackles at lung bases
C. Oxygen saturation of 88% on room air [CORRECT]
D. 2+ pitting edema in bilateral lower extremities
Correct Answer: C
Rationale: While all findings indicate worsening heart failure, oxygen saturation of 88%
represents severe hypoxemia and requires immediate intervention per the ABC priority
,framework. This SpO2 level indicates acute respiratory failure and necessitates
immediate supplemental oxygen, possible non-invasive positive pressure ventilation,
and rapid provider notification.
● Option A is incorrect because although weight gain indicates fluid retention, it
does not pose an immediate threat to life and can be managed with diuretic
therapy.
● Option B is incorrect because crackles, while indicating pulmonary congestion,
are an expected finding in decompensated HF and less immediately threatening
than hypoxemia.
● Option D is incorrect because peripheral edema, while uncomfortable and
indicating fluid overload, does not compromise vital organ function immediately.
Clinical Alert: SpO2 <90% indicates severe hypoxemia requiring immediate O2 therapy
and provider notification.
Q2: A nurse is assessing a patient 24 hours post-MI. Which finding requires immediate
notification of the healthcare provider?
A. Serum troponin I level of 12 ng/mL
B. Occasional premature ventricular contractions (PVCs)
C. New onset of intermittent substernal chest pain radiating to left arm [CORRECT]
D. Blood pressure 138/88 mmHg
Correct Answer: C
,Rationale: New onset chest pain 24 hours post-MI may indicate recurrent myocardial
ischemia, reinfarction, or mechanical complications (papillary muscle rupture,
ventricular septal defect, free wall rupture). This requires immediate ECG, troponin
levels, and cardiology evaluation.
● Option A is incorrect because elevated troponin is expected post-MI and peaks at
12-24 hours; trending is more important than absolute value.
● Option B is incorrect because occasional PVCs are common post-MI; however,
frequent PVCs (>6/min), multifocal PVCs, or R-on-T phenomenon would require
intervention.
● Option D is incorrect because this BP is within acceptable range post-MI; concern
would be SBP <90 or >160 mmHg.
Q3: When assessing a patient with suspected pulmonary embolism, which finding is
most specific for this diagnosis?
A. Tachypnea and tachycardia
B. Pleuritic chest pain with hemoptysis [CORRECT]
C. Bilateral wheezing on auscultation
D. Decreased breath sounds bilaterally
Correct Answer: B
Rationale: Pleuritic chest pain (sharp, worse with inspiration) combined with hemoptysis
is highly specific for pulmonary embolism, particularly pulmonary infarction. This
, presentation indicates lung tissue necrosis due to compromised blood supply from the
embolus.
● Option A is incorrect because while tachypnea and tachycardia are present in PE,
they are non-specific and occur in many cardiopulmonary conditions.
● Option C is incorrect because wheezing is more characteristic of asthma or
COPD; PE typically presents with clear lungs or localized crackles.
● Option D is incorrect because bilateral decreased breath sounds suggest
pneumothorax, pleural effusion, or severe COPD, not PE.
Q4: A patient with type 1 diabetes presents with blood glucose of 520 mg/dL, pH 7.25,
bicarbonate 12 mEq/L, and positive serum ketones. Which nursing assessment finding
best confirms the diagnosis of diabetic ketoacidosis (DKA) versus hyperosmolar
hyperglycemic state (HHS)?
A. Blood glucose >500 mg/dL
B. Presence of ketones in urine and serum [CORRECT]
C. Serum osmolality >320 mOsm/kg
D. Altered mental status
Correct Answer: B
Rationale: The presence of significant ketonemia and ketonuria is the defining feature
that differentiates DKA from HHS. DKA involves absolute insulin deficiency with ketone
Detailed Rationales | ANCC Aligned | Pass Guaranteed - A+
Graded
DOMAIN 1: ASSESSMENT AND DIAGNOSIS (30 Questions) – 20%
Q1: A 68-year-old patient with chronic heart failure presents with increasing dyspnea,
weight gain of 3 kg (6.6 lbs) in 3 days, and bilateral crackles in lung bases. Which
assessment finding requires the most immediate intervention?
A. Weight gain of 3 kg over 3 days
B. Bilateral crackles at lung bases
C. Oxygen saturation of 88% on room air [CORRECT]
D. 2+ pitting edema in bilateral lower extremities
Correct Answer: C
Rationale: While all findings indicate worsening heart failure, oxygen saturation of 88%
represents severe hypoxemia and requires immediate intervention per the ABC priority
,framework. This SpO2 level indicates acute respiratory failure and necessitates
immediate supplemental oxygen, possible non-invasive positive pressure ventilation,
and rapid provider notification.
● Option A is incorrect because although weight gain indicates fluid retention, it
does not pose an immediate threat to life and can be managed with diuretic
therapy.
● Option B is incorrect because crackles, while indicating pulmonary congestion,
are an expected finding in decompensated HF and less immediately threatening
than hypoxemia.
● Option D is incorrect because peripheral edema, while uncomfortable and
indicating fluid overload, does not compromise vital organ function immediately.
Clinical Alert: SpO2 <90% indicates severe hypoxemia requiring immediate O2 therapy
and provider notification.
Q2: A nurse is assessing a patient 24 hours post-MI. Which finding requires immediate
notification of the healthcare provider?
A. Serum troponin I level of 12 ng/mL
B. Occasional premature ventricular contractions (PVCs)
C. New onset of intermittent substernal chest pain radiating to left arm [CORRECT]
D. Blood pressure 138/88 mmHg
Correct Answer: C
,Rationale: New onset chest pain 24 hours post-MI may indicate recurrent myocardial
ischemia, reinfarction, or mechanical complications (papillary muscle rupture,
ventricular septal defect, free wall rupture). This requires immediate ECG, troponin
levels, and cardiology evaluation.
● Option A is incorrect because elevated troponin is expected post-MI and peaks at
12-24 hours; trending is more important than absolute value.
● Option B is incorrect because occasional PVCs are common post-MI; however,
frequent PVCs (>6/min), multifocal PVCs, or R-on-T phenomenon would require
intervention.
● Option D is incorrect because this BP is within acceptable range post-MI; concern
would be SBP <90 or >160 mmHg.
Q3: When assessing a patient with suspected pulmonary embolism, which finding is
most specific for this diagnosis?
A. Tachypnea and tachycardia
B. Pleuritic chest pain with hemoptysis [CORRECT]
C. Bilateral wheezing on auscultation
D. Decreased breath sounds bilaterally
Correct Answer: B
Rationale: Pleuritic chest pain (sharp, worse with inspiration) combined with hemoptysis
is highly specific for pulmonary embolism, particularly pulmonary infarction. This
, presentation indicates lung tissue necrosis due to compromised blood supply from the
embolus.
● Option A is incorrect because while tachypnea and tachycardia are present in PE,
they are non-specific and occur in many cardiopulmonary conditions.
● Option C is incorrect because wheezing is more characteristic of asthma or
COPD; PE typically presents with clear lungs or localized crackles.
● Option D is incorrect because bilateral decreased breath sounds suggest
pneumothorax, pleural effusion, or severe COPD, not PE.
Q4: A patient with type 1 diabetes presents with blood glucose of 520 mg/dL, pH 7.25,
bicarbonate 12 mEq/L, and positive serum ketones. Which nursing assessment finding
best confirms the diagnosis of diabetic ketoacidosis (DKA) versus hyperosmolar
hyperglycemic state (HHS)?
A. Blood glucose >500 mg/dL
B. Presence of ketones in urine and serum [CORRECT]
C. Serum osmolality >320 mOsm/kg
D. Altered mental status
Correct Answer: B
Rationale: The presence of significant ketonemia and ketonuria is the defining feature
that differentiates DKA from HHS. DKA involves absolute insulin deficiency with ketone
