Updated Versions (2026) with Correct
Answers and Detailed Rationales |
Graded A+ for Advanced Practice Nurse
Students
Section 1: Foundations of Diagnostic Reasoning
Question 1
A 42-year-old woman presents with fatigue and intermittent abdominal discomfort. As you
begin her visit, you ask her to describe when the discomfort started, what makes it better or
worse, and how long each episode lasts. Which part of diagnostic reasoning are you actively
gathering?
A. Functional health patterns
B. Review of systems
C. History of present illness using OLDCARTS
D. Past medical history
Correct ✔✔✔ANSW✔✔ C. History of present illness using OLDCARTS
Rationale: The HPI should be a detailed, focused breakdown of the chief complaint using
OLDCARTS (Onset, Location, Duration, Characteristics, Aggravating factors, Relieving factors,
Treatments, Severity), which is exactly what the questions in this scenario are eliciting .
,Question 2
During a visit, a 55-year-old man reports "I've had burning in my chest after meals for 3
months." You note his BMI, blood pressure, and an abnormal abdominal exam. Which piece
of information is SUBJECTIVE data?
A. BMI 31 kg/m²
B. Blood pressure 152/88 mm Hg
C. Epigastric tenderness to palpation
D. Burning in his chest after meals for 3 months
Correct ✔✔✔ANSW✔✔ D. Burning in his chest after meals for 3 months
Rationale: Subjective data are what the patient reports, including the chief complaint and HPI.
The sensation of burning after meals and its duration is patient-reported information, whereas
vitals and exam findings are objective .
Question 3
What is the definition of diagnostic reasoning?
A. The ability to memorize medical facts
B. Reflective thinking that questions one's thinking to determine if all possible avenues have been
explored
C. The process of coding medical diagnoses
D. The documentation of patient history
Correct ✔✔✔ANSW✔✔ B. Reflective thinking that questions one's thinking to determine if
all possible avenues have been explored
,Rationale: Diagnostic reasoning is seen as a kind of critical thinking. It involves questioning one's
own thinking process to ensure all possible avenues have been explored and that conclusions are
based on evidence .
Question 4
A 43-year-old woman presents with fatigue and intermittent abdominal pain. As you think
through possible causes, you continually ask yourself whether any key diagnoses are being
overlooked and whether each lab you order truly adds value. This process best describes
which concept?
A. SOAP documentation
B. Diagnostic reasoning
C. Medical decision making
D. Differential diagnosis
Correct ✔✔✔ANSW✔✔ B. Diagnostic reasoning
Rationale: Diagnostic reasoning is a reflective critical-thinking process in which the clinician
continually questions their own thinking, evaluates how each new data point supports or refutes
diagnostic hypotheses, and ensures conclusions are based on evidence .
Question 5
What is the likelihood ratio?
A. The probability that a test result is accurate
B. How likely it is that a patient has the disease; when the ratio is higher, it is more likely they have
, the disease
C. The number of false positives in a population
D. The percentage of patients who recover with treatment
Correct ✔✔✔ANSW✔✔ B. How likely it is that a patient has the disease; when the ratio is
higher, it is more likely they have the disease
Rationale: The likelihood ratio is determined by sensitivity and specificity. When the ratio is
higher, it is more likely the patient has the disease .
Question 6
Which of the following is true regarding specificity?
A. A test with high specificity has few false positives
B. Specificity is the ability to correctly identify those with the disease
C. Specificity is calculated as true positives divided by total positives
D. A specific test is best for ruling out disease
Correct ✔✔✔ANSW✔✔ A. A test with high specificity has few false positives
Rationale: Specificity is the ability of a test to correctly identify those WITHOUT the condition.
High specificity means fewer false positives. A specific test that is positive "rules in" disease
(SPIN) .
Question 7
A diagnostic test has very few false negatives. What is the best way to describe this test?