HSRT Exam — Questions and Answers

Question 1: Mary Smith is recovering from an accident that has rendered her a paralegic. She has been in the rehabilitation unit of your hospital for several weeks and has come to the radiology department for images of her lumbosacral spine. <br>What is the LEAST appropiate response to this situation?

Greet the patient and assist her onto the imaging table. Ask her if she might be pregnant and the date of her last menstrual period. (Correct answer)
None of the above
Greet the patient. Sit with her so you are at eye level with the patient. Explain the procedure and determine the date of her last menstrual period. <br>Discuss with the patient the amount of assistance that she will need during the procedure and give only the help that she needs at her direction.
Greet the patient and assess her ability to follow directions. Take a brief history and request the date of her last menstrual period. Explain the procedure and assist her onto the imaging table.

Correct answer: Greet the patient and assist her onto the imaging table. Ask her if she might be pregnant and the date of her last menstrual period.

The least appropriate response in this situation is to greet the patient and assist her onto the imaging table without asking if she might be pregnant and the date of her last menstrual period. This is because it is important to determine if the patient is pregnant before performing any radiological procedures, as radiation exposure can be harmful to a developing fetus. Additionally, knowing the date of her last menstrual period is important for accurate interpretation of the imaging results.

Question 2: During morning medication rounds, a nurse realizes she administered Medication A to Patient X but then discovers the medication was prescribed for Patient Y (same room, adjacent bed). Which action should occur IMMEDIATELY?

Notify the pharmacy to cancel the dispensing
Administer the correct medication to Patient Y before reporting the error
Document the error in the chart and proceed with rounds
Assess Patient X for any adverse effects from Medication A and notify the prescribing physician immediately (Correct answer)

Correct answer: Assess Patient X for any adverse effects from Medication A and notify the prescribing physician immediately

The immediate priority is patient safety: assess the patient who received the wrong medication for adverse effects and notify the physician so appropriate intervention can be arranged.

Question 3: Which of the following best describes 'publication bias' in the context of medical research?

Funding agencies refuse to support negative studies
Peer reviewers reject studies from unknown institutions
Researchers selectively report only favorable patient outcomes
Journals preferentially publish studies with positive or significant results (Correct answer)

Correct answer: Journals preferentially publish studies with positive or significant results

Publication bias occurs when journals disproportionately publish studies showing positive or statistically significant results, skewing the literature.

Question 4: A pharmacy prepares a 0.9% NaCl (normal saline) solution. 0.9% means 0.9 g of NaCl per 100 mL. How many milligrams of NaCl are in a 500 mL bag?

4500 mg (Correct answer)
45 mg
450 mg
900 mg

Correct answer: 4500 mg

0.9 g/100 mL × 500 mL = 4.5 g = 4500 mg of NaCl.

Question 5: A clinical trial for a new antihypertensive drug reports that the treatment group (n=200) had a mean systolic blood pressure reduction of 15 mmHg, while the placebo group (n=200) had a mean reduction of 5 mmHg. The p-value for the difference between the groups was p < 0.01. Which of the following is the most accurate interpretation of the p-value?

There is a greater than 99% probability that the new drug is effective.
The observed difference in blood pressure reduction between the two groups is statistically significant. (Correct answer)
There is less than a 1% chance that the study results are wrong.
The study proves that the drug is clinically superior to the placebo.

Correct answer: The observed difference in blood pressure reduction between the two groups is statistically significant.

A p-value less than 0.01 indicates that there is a less than 1% probability that the observed difference between the treatment and placebo groups occurred by random chance alone. Therefore, the result is considered statistically significant. It does not directly state the probability of the drug's effectiveness or prove clinical superiority, which involves other factors.

Question 6: A clinical ethics committee member argues: 'If we allow terminally ill patients to refuse treatment, soon doctors will be pressured to euthanize all elderly patients.' This argument exemplifies:

False dilemma — the argument presents only two extreme options
Ad hominem — the argument attacks those who support patient autonomy
Slippery slope — an unwarranted assumption that one action will inevitably lead to a series of extreme consequences (Correct answer)
Straw man — the argument misrepresents the committee's proposal

Correct answer: Slippery slope — an unwarranted assumption that one action will inevitably lead to a series of extreme consequences

A slippery slope argument assumes, without justification, that one action leads inevitably through a chain of events to a harmful extreme outcome.

Question 7: A patient's lab report includes the following data from a complete blood count (CBC) panel: - White Blood Cell (WBC) Count: 14.5 x 10^9/L (Reference Range: 4.5-11.0) - Red Blood Cell (RBC) Count: 3.9 x 10^12/L (Reference Range: 4.2-5.4) - Platelet Count: 140 x 10^9/L (Reference Range: 150-400) - Hemoglobin (Hgb): 11.2 g/dL (Reference Range: 12.0-16.0) Which of the following statements is the most accurate interpretation of these results?

The results are all within normal limits and show no cause for concern.
The patient's platelet count is dangerously high, indicating a clotting risk.
All the patient's blood cell counts are critically low.
The results show an elevated white blood cell count and indicators of anemia. (Correct answer)

Correct answer: The results show an elevated white blood cell count and indicators of anemia.

The WBC count (14.5) is above the reference range, suggesting a possible infection or inflammation. The RBC count (3.9) and Hemoglobin (11.2) are both below their respective reference ranges, which are key indicators of anemia. The platelet count (140) is slightly below the reference range, not dangerously high.

Question 8: A pharmacist hears: 'All the best cardiologists at this hospital recommend Drug Z, so it must be the best option.' The BEST identification of this argument's flaw is:

Bandwagon fallacy — consensus among a selected group does not substitute for systematic evidence review (Correct answer)
False dilemma — implying Drug Z or nothing
Confirmation bias — seeking only cardiologist opinions
Appeal to authority — individual expert opinion overrides evidence hierarchies

Correct answer: Bandwagon fallacy — consensus among a selected group does not substitute for systematic evidence review

The bandwagon fallacy argues that because many or prominent people agree, a claim must be correct — but popularity among experts is not equivalent to systematic evidence.

Question 9: A patient's chart notes the following: 'Patient reports increased fatigue and shortness of breath over the past month. A recent blood test shows significantly lower-than-normal red blood cell count.' Based only on this information, what can be logically inferred?

The patient has a poor diet.
The patient requires an immediate blood transfusion.
The patient is suffering from a severe cardiac condition.
The patient's symptoms are a direct result of the low red blood cell count. (Correct answer)

Correct answer: The patient's symptoms are a direct result of the low red blood cell count.

The most direct inference is that the physiological symptoms (fatigue, shortness of breath) are linked to the clinical finding (low red blood cells), as red blood cells are responsible for oxygen transport. While a poor diet or a cardiac condition could be ultimate causes, we cannot infer them directly from only the information given. An immediate transfusion is a treatment decision and not a direct inference from the presented data alone.

Question 10: A physical therapist is treating two patients for rotator cuff injuries. Patient A, a 25-year-old baseball player, is showing rapid improvement with an aggressive exercise regimen. Patient B, a 65-year-old with a history of osteoporosis, is showing minimal improvement with the same regimen and reports increased pain. Which of the following represents the most critical evaluation of this situation?

The exercise regimen is only effective for young athletes.
The therapist must consider patient-specific factors and modify the treatment plan for Patient B. (Correct answer)
Patient B is likely not adhering to the prescribed exercise plan.
Aggressive exercise is always the best approach for rotator cuff injuries.

Correct answer: The therapist must consider patient-specific factors and modify the treatment plan for Patient B.

The core skill being tested is the evaluation of a clinical situation and the recognition that different patient populations require different approaches. The evidence shows the same treatment plan is having different outcomes. The most reasonable clinical judgment is to re-evaluate the plan for Patient B, considering their age and comorbidities. The other options are flawed conclusions. Option A is an overgeneralization. Option B is an unsubstantiated assumption about patient adherence. Option D is a dangerous generalization that is contradicted by the evidence from Patient B.

Question 11: Two systematic reviews report conflicting conclusions about the effectiveness of acupuncture for chronic low back pain. Which approach BEST assesses the relative credibility of each review?

Compare their methodological quality: study selection criteria, risk of bias assessment tools, and heterogeneity management (Correct answer)
Accept the review that included more total studies regardless of their quality
Accept the most recently published review as more credible because newer evidence supersedes older evidence
Defer to the review authored by researchers affiliated with a university hospital

Correct answer: Compare their methodological quality: study selection criteria, risk of bias assessment tools, and heterogeneity management

Methodological quality — not recency, quantity, or institutional prestige — is the primary determinant of a systematic review's credibility.

Question 12: A run chart displaying monthly medication error rates shows the data fluctuating around a centerline without any runs of 8+ consecutive points on one side or trends of 6+ ascending/descending points. This pattern MOST accurately suggests:

Special cause variation — the fluctuations indicate a systematic quality problem requiring root cause analysis
Common cause variation — the process is stable and changes are due to inherent random variation, not assignable causes (Correct answer)
A deteriorating quality trend that requires immediate escalation
The data is insufficient for quality conclusions because it contains no special cause signals

Correct answer: Common cause variation — the process is stable and changes are due to inherent random variation, not assignable causes

Absence of run chart rules violations (8-point run, 6-point trend, etc.) indicates common cause (random) variation in a stable process.

Question 13: A hospital administrator says: 'Our new EHR reduced nursing documentation time from 45 minutes to 30 minutes. Clearly it has improved all aspects of nursing care.' Which fallacy is committed?

Equivocation — using 'nursing care' to mean different things
Hasty generalization — drawing conclusions from insufficient data points
Overgeneralization — extrapolating a single measured benefit (documentation time) to all aspects of nursing care (Correct answer)
False cause — assuming the EHR caused the reduction without a control group

Correct answer: Overgeneralization — extrapolating a single measured benefit (documentation time) to all aspects of nursing care

Extrapolating one measured metric (documentation time) to all dimensions of nursing care quality is an overgeneralization.

Question 14: At a medical conference, a young cardiologist presents compelling research data that challenges a long-held belief about a particular medication. During the Q&A, a senior physician dismisses the findings by saying, 'This research comes from a junior fellow at a small community hospital. I doubt they have the resources or experience to produce a truly valid study.' This comment is an example of which logical fallacy?

Straw Man
Circular Reasoning
Appeal to Authority
Ad Hominem (Correct answer)

Correct answer: Ad Hominem

The senior physician is committing an Ad Hominem fallacy. Instead of addressing the merits, methodology, or data of the research presented, the physician is attacking the character and circumstances (junior status, small hospital) of the person presenting it. [1, 5, 10] The argument is directed at the researcher, not the research itself.

Question 15: A nurse practitioner reviews a research abstract stating: 'In our cohort, patients with sleep duration under 6 hours had 2.3× higher odds of developing hypertension over 10 years.' The MOST logically defensible inference is:

Short sleep duration is associated with increased odds of hypertension, and this warrants screening and counseling in clinical practice (Correct answer)
Short sleep causes hypertension, so prescribing longer sleep will lower blood pressure
The finding is not clinically relevant because odds ratios are weaker than relative risks
Patients with hypertension should have their sleep assessed to treat the underlying cause

Correct answer: Short sleep duration is associated with increased odds of hypertension, and this warrants screening and counseling in clinical practice

An odds ratio from a cohort study supports an associative inference and has clinical screening implications, but does not prove causation.

Question 16: A hospital infection control officer notices that 3 of 12 patients on a specific ward developed Clostridioides difficile infection in the past week. She does not yet know the source. Which reasoning approach BEST guides the next step?

Assume the pattern is coincidental since C. difficile is endemic in hospitals
Wait until at least 5 cases occur before concluding this is an outbreak
Generate several competing hypotheses (environmental contamination, antibiotic stewardship failure, new carrier staff) and initiate investigation to test each inductively (Correct answer)
Conclude immediately that a new staff member brought in C. difficile from outside

Correct answer: Generate several competing hypotheses (environmental contamination, antibiotic stewardship failure, new carrier staff) and initiate investigation to test each inductively

Under uncertainty with limited data, generating multiple competing hypotheses and investigating each inductively is the correct approach — premature closure causes missed diagnoses.

Question 17: A clinical trial is conducted to compare a new antihypertensive drug ('NewDrug') against a placebo. The results show that the group taking NewDrug had an average systolic blood pressure reduction of 15 mmHg, while the placebo group had a reduction of 2 mmHg. The p-value for this difference was < 0.01. What is the most appropriate inference from these findings?

All patients who take NewDrug will experience exactly a 15 mmHg drop in systolic blood pressure.
NewDrug is an effective medication for lowering systolic blood pressure. (Correct answer)
The observed difference in blood pressure reduction between the two groups is likely due to random chance.
The study proves that NewDrug has no side effects.

Correct answer: NewDrug is an effective medication for lowering systolic blood pressure.

This question requires making a valid inference based on statistical results from a clinical trial. A p-value of < 0.01 indicates that the observed difference between the NewDrug and placebo groups is statistically significant, meaning it is very unlikely to have occurred by chance. Therefore, the most logical inference is that the drug is effective. Option A is directly contradicted by the low p-value. Option C is an invalid inference as the provided data is about efficacy, not safety or side effects. Option D is an overgeneralization; the 15 mmHg is an average, and individual results will vary.

Question 18: A nursing professor tells students: 'I've been practicing for 30 years and I've never seen a patient harmed by that medication.' This claim should be assessed with which critical lens?

The professor's claim should be immediately discredited because it is anecdotal
30 years of experience qualifies as expert opinion, which is the highest level of evidence
Personal clinical experience, however extensive, is not a substitute for systematic evidence and can be subject to survivorship bias (Correct answer)
Clinical experience is only credible when published in peer-reviewed journals

Correct answer: Personal clinical experience, however extensive, is not a substitute for systematic evidence and can be subject to survivorship bias

Even extensive personal experience is subject to survivorship bias, recall bias, and is inferior to controlled systematic studies when assessing drug safety.

Question 19: Which of the following BEST illustrates the relationship between inductive and deductive reasoning in clinical practice?

Induction is used for diagnosis while deduction is used for prognosis
Induction generates hypotheses and general rules from clinical data; deduction applies those rules to specific patient cases (Correct answer)
Deductive reasoning generates guidelines; inductive reasoning tests whether they apply to individual patients
Both forms of reasoning produce equally certain conclusions in clinical settings

Correct answer: Induction generates hypotheses and general rules from clinical data; deduction applies those rules to specific patient cases

In clinical practice, research inductively generates rules and guidelines; clinicians then deductively apply those rules to specific patients.

Question 20: A clinical study observes that in a group of 100 patients with a specific type of bacterial infection, 95 patients who were treated with Antibiotic X recovered within three days. The remaining 5 patients took a week to recover. All patients were of similar age and overall health status. Which of the following is the most logical inference from this information?

Antibiotic X is likely an effective treatment for this specific bacterial infection. (Correct answer)
Antibiotic X will cure any bacterial infection within three days.
Patients with this infection will always recover within a week.
Antibiotic X is ineffective for 5% of the population.

Correct answer: Antibiotic X is likely an effective treatment for this specific bacterial infection.

The data strongly suggests a high success rate (95%) for Antibiotic X in treating this particular infection, making it a likely effective treatment. The other options are flawed inferences. We cannot conclude it's 'ineffective' for the 5% without more information (it still worked, just slower). The study is only about one specific infection, so it cannot be generalized to 'any' bacterial infection. Lastly, we cannot conclude all patients with this infection will recover within a week, as the study only included patients who were treated.

Question 21: A scatter plot shows a positive correlation (r = 0.72) between nurse-to-patient ratio and patient falls per 1000 patient days. The MOST appropriate interpretation of this correlation is:

The correlation proves that understaffing directly causes falls
Every additional patient per nurse causes 0.72 additional falls per 1000 days
Higher nurse-to-patient ratios (more patients per nurse) are associated with more falls, but the correlation does not establish causation (Correct answer)
A correlation of 0.72 is too weak to have clinical relevance

Correct answer: Higher nurse-to-patient ratios (more patients per nurse) are associated with more falls, but the correlation does not establish causation

A correlation coefficient describes the strength and direction of association, not causation. r=0.72 is a moderately strong association, not a causal coefficient.

Question 22: A nurse practitioner reads a case summary stating: 'Patient is non-compliant.' Which analytical stance is MOST appropriate?

Question the term 'non-compliant' as it may obscure barriers to adherence such as cost, literacy, or side effects (Correct answer)
Document 'non-compliant' in the chart to alert future providers
Accept the label and plan care around the assumption of deliberate non-adherence
Escalate to a specialist because non-compliant patients are beyond primary care scope

Correct answer: Question the term 'non-compliant' as it may obscure barriers to adherence such as cost, literacy, or side effects

Critically analyzing loaded clinical labels reveals assumptions that may not reflect the patient's actual situation or barriers to care.

Question 23: A nurse uses inductive reasoning to argue: 'The last 8 patients with these chest pain characteristics were having MIs. This new patient has the same features, so she's probably having an MI.' The STRONGEST limitation of this inductive inference is:

Inductive reasoning is invalid in clinical emergency settings
The inference is only valid if the nurse has cardiologist training
Eight cases are sufficient for a strong inductive generalization
The sample of 8 patients may not be representative of all patients with this presentation; base rates and pretest probability must also inform the inference (Correct answer)

Correct answer: The sample of 8 patients may not be representative of all patients with this presentation; base rates and pretest probability must also inform the inference

Representativeness and base rates are key inductive limitations — a biased sample or ignoring prevalence data can distort probability estimates.

Question 24: A graph displays a receiver operating characteristic (ROC) curve for a new triage scoring tool. The area under the curve (AUC) is 0.71. Which interpretation is MOST accurate?

The tool is 71% accurate — it correctly classifies 71% of all patients
The tool correctly identifies 71% of all true positive cases
The tool has moderate discriminatory ability — it correctly ranks a positive case above a negative case 71% of the time, which is better than chance but not excellent (Correct answer)
An AUC of 0.71 is too low for any clinical application

Correct answer: The tool has moderate discriminatory ability — it correctly ranks a positive case above a negative case 71% of the time, which is better than chance but not excellent

AUC represents the probability that the tool ranks a randomly selected positive case higher than a negative case — it is a measure of discrimination, not sensitivity or accuracy.

Question 25: A nurse observes that three separate patients who have developed a post-operative infection all had their surgeries in the same operating room. The nurse begins to suspect that the operating room may be the source of the infection. Which type of reasoning is the nurse primarily using?

Analogical Reasoning
Inductive Reasoning (Correct answer)
Deductive Reasoning
Abductive Reasoning

Correct answer: Inductive Reasoning

Inductive reasoning involves making a generalization based on specific observations. The nurse observed a pattern (three patients with infections from the same OR) and formed a general hypothesis that the OR is the source.

Question 26: A physical therapist is taught: 'Patients with rotator cuff tears who complete at least 8 weeks of structured physical therapy avoid surgery in 70% of cases.' She applies this to a new patient with a confirmed rotator cuff tear. This application involves:

Deductive reasoning — applying a statistically-derived guideline (general rule) to a specific patient case (Correct answer)
Analogical reasoning — comparing the new patient to previous cases the therapist has treated
Abductive reasoning — selecting the best explanation for the patient's pain
Inductive reasoning — observing the patient's response to generate a treatment hypothesis

Correct answer: Deductive reasoning — applying a statistically-derived guideline (general rule) to a specific patient case

Taking a general clinical rule and applying it to a specific patient to guide treatment is deductive reasoning in clinical practice.

Question 27: Studies consistently show that individuals who exercise for at least 150 minutes per week have a lower incidence of cardiovascular disease than those who do not. From this statistical correlation, which of the following can be logically inferred?

Exercising for 150 minutes a week guarantees prevention of cardiovascular disease.
Individuals with cardiovascular disease should immediately start exercising for 150 minutes per week.
An association exists between regular exercise and a lower risk of cardiovascular disease. (Correct answer)
Lack of exercise is the primary cause of cardiovascular disease.

Correct answer: An association exists between regular exercise and a lower risk of cardiovascular disease.

The information describes a correlation, which is an association between two variables. It does not prove causation. Therefore, the most accurate inference is that there is an association. We cannot conclude that lack of exercise is the primary cause, as other factors (diet, genetics) are involved. It does not guarantee prevention, but lowers risk. Finally, this data doesn't provide a treatment recommendation for those who already have the disease.

Question 28: What is hepatitis?

Chronic liver disease
Inflammation of the liver (Correct answer)
Scarring of the liver
Kidney stones

Correct answer: Inflammation of the liver

Hepatitis is the inflammation of the liver. It can have various causes, including viral infections, alcohol consumption, autoimmune diseases, or exposure to certain toxins. Inflammation of the liver can lead to liver damage and may contribute to conditions such as scarring of the liver (cirrhosis) or chronic liver disease. It is essential to identify the underlying cause of hepatitis for proper treatment and management. Kidney stones are unrelated to hepatitis; they involve the formation of solid particles in the kidneys.

Question 29: A pharmacist must advise on whether to prescribe Drug A or Drug B under conditions of uncertainty, where trial data is limited and outcomes are genuinely unknown. The MOST epistemically appropriate approach is:

Default to Drug A because it is older and therefore has more long-term safety data
Defer entirely to the physician to avoid making any recommendation without certainty
Explicitly acknowledge the uncertainty, weigh available evidence, communicate known unknowns to the prescriber, and note that the decision involves acceptable risk under incomplete information (Correct answer)
Select Drug B because newer drugs represent advances over older therapies

Correct answer: Explicitly acknowledge the uncertainty, weigh available evidence, communicate known unknowns to the prescriber, and note that the decision involves acceptable risk under incomplete information

Clinical reasoning under uncertainty requires acknowledging limitations, synthesizing available evidence, and communicating uncertainty transparently to support shared decision-making.

Question 30: A hospital administrator cites a testimonial from one nurse as evidence that a new scheduling system 'greatly improved staff satisfaction.' Which limitation of this evidence is MOST critical to identify?

A single testimonial is anecdotal and cannot represent the distribution of staff experiences (Correct answer)
The nurse may be biased because she helped design the scheduling system
The administrator should have surveyed only full-time nurses
Testimonials are never credible in healthcare settings

Correct answer: A single testimonial is anecdotal and cannot represent the distribution of staff experiences

A single testimonial is an n=1 anecdote and provides no information about how representative that experience is across the broader staff population.

Question 31: A public health researcher reviews 15 studies from different countries and concludes that 'hand hygiene compliance reduces healthcare-associated infection rates.' What type of reasoning led to this conclusion?

Inductive reasoning — specific observations across multiple studies were generalized into a broader principle (Correct answer)
Deductive reasoning — the conclusion follows necessarily from universal premises
Analogical reasoning — patterns from one setting were applied to another
Abductive reasoning — the best explanation was selected from competing hypotheses

Correct answer: Inductive reasoning — specific observations across multiple studies were generalized into a broader principle

Moving from specific observations (15 studies) to a general principle (hand hygiene reduces HAI) is inductive reasoning.

Question 32: A hospital pharmacist uses deductive reasoning to check for drug-drug interactions before dispensing. Which scenario BEST represents a failure of this deductive process?

The pharmacist deduces no interaction but the patient develops an unanticipated adverse reaction
The pharmacist applies the correct interaction rule but to the wrong drug because the two similar-sounding drugs were confused (identity error invalidating a premise) (Correct answer)
The pharmacist correctly applies an outdated interaction rule that has since been revised
The pharmacist fails to find an interaction because no interaction rule exists in the database

Correct answer: The pharmacist applies the correct interaction rule but to the wrong drug because the two similar-sounding drugs were confused (identity error invalidating a premise)

Applying the right logical rule to a wrong premise (misidentified drug) produces an invalid conclusion — this is a failure of deductive soundness due to a false premise.

Question 33: A deductive argument in clinical care states: 'All patients with SBP > 180 mmHg require immediate antihypertensive intervention. Mrs. Park's SBP is 192 mmHg. Therefore Mrs. Park requires immediate antihypertensive intervention.' Which evaluation of this argument is MOST accurate?

The argument is sound because SBP 192 is unambiguously elevated
The argument is valid; its soundness depends on whether the threshold premise reflects current evidence (Correct answer)
The argument is inductively strong but not deductively valid
The argument is invalid because blood pressure must be confirmed with multiple readings

Correct answer: The argument is valid; its soundness depends on whether the threshold premise reflects current evidence

The argument is deductively valid (correct logical form); soundness — whether the conclusion is true — depends on whether the threshold premise is clinically accurate.

Question 34: A research paper reports that a new drug reduces LDL cholesterol by a mean of 38 mg/dL (SD = 12 mg/dL). A patient's baseline LDL is 165 mg/dL. After treatment, what is the expected LDL range for approximately 95% of patients like this one?

90–165 mg/dL (full range of responses)
115–141 mg/dL (mean ± 1 SD)
103–151 mg/dL (expected mean reduction 38, ± 2 SD = ± 24 mg/dL) (Correct answer)
127–165 mg/dL (38 mg/dL reduction only)

Correct answer: 103–151 mg/dL (expected mean reduction 38, ± 2 SD = ± 24 mg/dL)

Expected post-treatment LDL = 165 - 38 = 127 mg/dL mean. 95% range = mean ± 2SD = 127 ± 24 = 103–151 mg/dL.

Question 35: A respiratory therapist applies the deductive rule: 'Patients with FEV1/FVC < 0.70 have obstructive lung disease.' Patient L has an FEV1/FVC of 0.65. She concludes Patient L has obstructive lung disease. This reasoning is:

Inductively strong — obstruction is probable but not certain below this threshold
Invalid — spirometry results require physician interpretation before conclusions can be drawn
Deductively valid — the conclusion follows necessarily from the diagnostic threshold applied to the specific measurement (Correct answer)
Sound but not valid — the conclusion is clinically correct despite logical flaws

Correct answer: Deductively valid — the conclusion follows necessarily from the diagnostic threshold applied to the specific measurement

Applying a diagnostic threshold (universal rule) to a specific measurement to reach a diagnostic conclusion is a valid deductive argument.

HSRT Exam

The Health Sciences Reasoning Test measures critical thinking skills essential for health science professionals across five reasoning domains.

Questions

50 min

Time Limit

65%

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