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ition Dains ij
Chapter1:ClinicalReasoning, Differential Diagnosis, Evidence-BasedPractice, and Symptom Analysis
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MultipleChoice
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Identifythechoicethatbestcompletesthestatementoranswersthequestion.
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1. Which type ofclinical decision-making is most reliable? ij ij ij ij ol ol ij
A. Intuitive
B. Analytical
C. Experiential
D. Augenblick
2. Which ofthe following is false?To obtain adequate history, health-care providers must be:
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A. Methodical and systematic ij ij
B. Attentiveto the patient’s verbal and nonverballanguage ij ol ol ij ij ij ij
C. Ableto accuratelyinterpret the patient’s responses
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D. Adept at reading into thepatient’s statements
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3. Essential partsof a health historyinclude all ofthe following except: ol ij ij ol ij ij ij ij ij ij ol
A. Chief complaint ol
B. Historyofthe present illness ij ij ij
C. Currentvital signs ij ij
D. All of the above are essential historycomponents
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4. Which ofthe following is false? Whileperforming thephysical examination, theexaminer must be ableto:
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A. Differentiate between normaland abnormalfindings ol ol ij ol ij
B. Recall knowledge of a range of conditions and their associated signs and symptoms
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C. Recognize how certain conditionsaffect theresponse to other conditions ij ij ol ij ij ij ol ol ij
D. Foreseeunpredictable findings ij ij
5. Thefollowingis the leastreliablesource ofinformation for diagnosticstatistics:
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A. Evidence-based investigations ol
B. Primaryreports of research ol ij
C. Estimationbased on a provider’s experience ij ol ij ol ol
D. Published meta-analyses ol
6. Thefollowingcan be used to assist in sound clinical decision-making:
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A. Algorithm published in apeer-reviewed journal article ol ij ij ol ol
B. Clinicalpractice guidelines ij
C. Evidence-based research ol
D. All oftheabove
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7. Ifadiagnosticstudyhas high sensitivity, thisindicates a:
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A. High percentage of persons with the given condition will havean abnormal result
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B. Lowpercentage of persons with the given condition will have an abnormal result
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C. Lowlikelihood ofnormal result in persons without a given condition
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D. None of theabove ij ol ij
8. Ifadiagnosticstudyhas high specificity, this indicates a:
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A. Lowpercentage ofhealthyindividuals will showanormalresult
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B. High percentage of healthyindividuals will show a normal result
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C. Highpercentage of individuals with adisorderwill showa normal result
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D. Lowpercentage ofindividuals with adisorder will showan abnormal result
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9. A likelihood ratio above 1 indicatesthat a diagnostic test showing a:
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A. Positive result is stronglyassociated with the disease
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B. Negativeresultis stronglyassociated with absence of the disease
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C. Positive result isweaklyassociated with thediseaseij ij ij ij ij ij ij
D. Negative result is weaklyassociated with absence ofthe disease
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10. Whichof thefollowing clinical reasoningtools isdefinedas evidence- ij ol ij ij ij ij ol ij ij ol
based resourcebased on mathematical modeling to express the likelihood of a condition in select situations, settings, and/or pati ents?
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, A. Clinicalpractice guideline ij ij
B. Clinicaldecision rule ol
C. Clinical algorithm ij
Chapter1:Clinicalreasoning,differentialdiagnosis,evidence-basedpractice,andsymptomana ij ij ij ij ij
Answer Section
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MULTIPLE CHOICE
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1. ANS: B
Croskerry (2009) describes two major types of clinical diagnostic decision-making: intuitive and analytical. Intuitive decision-
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making (similar to Augenblink decision- ol ij ol ij
making) is based on the experience and intuition of the clinician and is less reliable and paired with fairly common errors. In con trast,
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analytical decision-making is based on careful consideration and has greater reliability with rare errors.
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2. ANS: D
To obtain adequate history, providers must be well organized, attentive to the patient’s verbal and nonverbal language, and able to acc
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urately interpret the patient’s responses to questions. Rather than reading into the patient’s statements, they clarify any area s of un
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certainty.
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3. ANS: C
Vitalsigns are partof thephysical examination portion of patient assessment, not part of thehealth history.
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4. ANS: D
While performing the physical examination, the examiner must be able to differentiate between normal and abnormal findings, r ec
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all knowledge of a range of conditions, including their associated signs and symptoms, recognize how certain conditions affect t he res
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ponse to other conditions, and distinguish the relevance of varied abnormal findings.
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5. ANS: C
Sources for diagnostic statistics include textbooks, primary reports of research, and published meta-
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analyses. Another source of statistics,the one thathas been most widelyused and available for application to thereasoningprocess
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,is theestimation based on a provider’s experience, although these are rarely accurate. Over the past decade, the availability of evide
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nce on which to base clinical reasoning is improving, and there is an increasing expectation that clinical reasoning be bas ed on scie
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ntific evidence. ij
Evidence-based statistics are also increasinglybeing used to develop resourcesto facilitate clinical decision-making.
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6. ANS: D
To assist in clinical decision-making, a number of evidence-
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based resourceshavebeen developed toassist the clinician. Resources, such as algorithms and clinical practice guidelines, assist in cli
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nical reasoning when properly applied.
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7. ANS: A
The sensitivity of a diagnostic study is thepercentage of individuals with the target condition who show an abnormal, orpositive, r esult
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. Ahigh sensitivity indicates that a greater percentage of persons with the given condition will have an abnormal result.
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8. ANS: B
The specificity of a diagnostic study is the percentage of normal, healthy individuals who have a normal result. The greater the s peci
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ficity, the greater the percentage of individuals who will have negative, or normal, results if they do not have the target con dition.
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9. ANS: A
The likelihood ratio is the probability that a positive test result will be associated with a person who has the target condition and a neg
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ative result will be associated with a healthy person. A likelihood ratio above 1 indicates that a positive result is associated w ith the
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disease; a likelihood ratio less than 1 indicates that a negative result is associated with an absence of the disease.
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10. ANS: B
Clinicaldecision (or prediction) rules provide another support for clinical reasoning. Clinical decision rules are evidence-
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based resources that provide probabilistic statements regarding the likelihood that a condition exists if certain variables are met wi
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th regard to the prognosis of patients with specific findings. Decision rules use mathematical models and are specific to cert ain si
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tuations, settings, and/or patient characteristics.
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PTS: i j i j i j 1