Bachelor of Health Science (BHS) Comprehensive Exam — Questions and Answers

Question 1: Which type of epidemiological study design follows a group of people over time to see who develops a disease?

Case-control study
Ecological study
Cohort study (Correct answer)
Cross-sectional study

Correct answer: Cohort study

A cohort study follows a defined group (cohort) prospectively over time, comparing disease incidence between exposed and unexposed individuals.

Question 2: Environmental justice refers to:

Enforcing EPA regulations uniformly across all industries
The legal prosecution of environmental polluters
International climate change treaties
The fair treatment of all people regardless of race or income in environmental and health policies (Correct answer)

Correct answer: The fair treatment of all people regardless of race or income in environmental and health policies

Environmental justice ensures that no group bears a disproportionate share of environmental burdens (e.g., pollution, toxic waste) based on race or income.

Question 3: Which social determinant of health has the greatest documented impact on overall health outcomes?

Access to healthcare services
Socioeconomic status (income and education) (Correct answer)
Genetic predisposition
Individual health behaviors

Correct answer: Socioeconomic status (income and education)

Research consistently shows that socioeconomic status — encompassing income, education, and occupation — has the largest influence on health outcomes across populations.

Question 4: A patient taking a beta-blocker for hypertension develops bradycardia. This is an example of which type of drug effect?

Drug-drug interaction
Allergic reaction
Adverse drug reaction (side effect) (Correct answer)
Idiosyncratic reaction

Correct answer: Adverse drug reaction (side effect)

Bradycardia is a predictable side effect of beta-blockers due to their mechanism of slowing heart rate, classifying it as an adverse drug reaction.

Question 5: The principle of therapeutic privilege—withholding information from a patient—is ethically justified only when:

The information is irrelevant to the treatment decision
The family requests the information be withheld
Disclosure would cause immediate, serious psychological harm (Correct answer)
The provider believes the patient will make an 'unwise' choice

Correct answer: Disclosure would cause immediate, serious psychological harm

Therapeutic privilege is a narrow, controversial exception applied only when truthful disclosure would create severe psychological harm that impairs the patient's ability to function.

Question 6: Herd immunity is achieved when:

A pathogen mutates to become less virulent
A sufficient proportion of a population is immune, protecting unvaccinated individuals (Correct answer)
Every individual in a population is vaccinated
Public health officials declare an outbreak over

Correct answer: A sufficient proportion of a population is immune, protecting unvaccinated individuals

Herd immunity occurs when enough of a population is immune that disease transmission is effectively halted, protecting those who cannot be vaccinated.

Question 7: Which public health strategy involves working with community members as active partners in identifying problems and designing interventions?

Randomized controlled trials
Expert-led needs assessment
Community-based participatory research (CBPR) (Correct answer)
Cross-sectional surveillance

Correct answer: Community-based participatory research (CBPR)

CBPR engages community members as equal partners in all phases of research and program planning, improving relevance, trust, and sustainability of health interventions.

Question 8: Medication reconciliation is a patient safety process designed to:

Bill patients accurately for medications dispensed
Substitute brand drugs with generics to reduce cost
Ensure a complete and accurate medication list is communicated at every care transition (Correct answer)
Document allergy histories in EHR systems

Correct answer: Ensure a complete and accurate medication list is communicated at every care transition

Medication reconciliation compares a patient's medication orders to all current medications to avoid omissions, duplications, or dosing errors during care transitions.

Question 9: What is 'polypharmacy' and why is it a concern in elderly US patients?

The practice of using one drug to treat multiple conditions
Using pharmaceutical-grade supplements
Administering drugs via multiple routes simultaneously
The concurrent use of multiple medications, increasing risks of interactions and adverse effects (Correct answer)

Correct answer: The concurrent use of multiple medications, increasing risks of interactions and adverse effects

Polypharmacy refers to the use of five or more medications simultaneously; in elderly patients, altered drug metabolism increases the risk of adverse reactions and interactions.

Question 10: An investigator is studying whether air pollution exposure differs between asthma cases and healthy controls. The primary concern with retrospective exposure assessment is:

Loss to follow-up
Ecological fallacy
Length-biased sampling
Differential recall of exposure (Correct answer)

Correct answer: Differential recall of exposure

Retrospective assessment risks differential recall because cases may remember or report exposures differently than controls.

Question 11: What is the 'therapeutic index' of a drug?

The time to peak drug effect
The percentage of the drug absorbed by the body
The ratio between the toxic dose and the effective dose (Correct answer)
The speed at which a drug is metabolized

Correct answer: The ratio between the toxic dose and the effective dose

The therapeutic index (TI) is the ratio of the toxic dose to the effective dose, indicating how safe a drug is; a narrow TI requires careful monitoring.

Question 12: Which enzyme system in the liver is primarily responsible for the metabolism of most pharmaceutical drugs?

Cytochrome P450 (CYP450) (Correct answer)
Acetylcholinesterase
Xanthine oxidase
Monoamine oxidase (MAO)

Correct answer: Cytochrome P450 (CYP450)

The cytochrome P450 enzyme family metabolizes approximately 70–80% of drugs, and drug interactions often occur when two drugs compete for the same CYP enzyme.

Question 13: Berkson's bias is a type of selection bias that occurs in:

Ecological studies
Community-based cohort studies
Hospital-based case-control studies (Correct answer)
Randomized trials

Correct answer: Hospital-based case-control studies

Berkson's bias arises when hospital controls have different exposure rates than the general population, distorting associations.

Question 14: What does the acronym HIPAA stand for in US healthcare?

Health Insurance Portability and Accountability Act (Correct answer)
Hospital Insurance Privacy and Access Act
Health Information Protection and Assurance Act
Healthcare Integrity Policy and Administration Act

Correct answer: Health Insurance Portability and Accountability Act

HIPAA stands for the Health Insurance Portability and Accountability Act, which protects patient health information privacy.

Question 15: Polychlorinated biphenyls (PCBs) are primarily associated with which health effects?

Acute kidney failure
Reproductive toxicity, developmental effects, and carcinogenicity (Correct answer)
Immediate respiratory distress and pulmonary edema
Iron-deficiency anemia

Correct answer: Reproductive toxicity, developmental effects, and carcinogenicity

PCBs are classified as probable human carcinogens and are associated with endocrine disruption, reproductive toxicity, developmental neurotoxicity, and immunotoxicity due to their persistence and bioaccumulation.

Question 16: In the Tarasoff v. Regents of the University of California ruling, the court established that therapists have:

The right to hospitalize any patient who expresses violent ideation
Immunity from liability for patient violence against third parties
Absolute confidentiality that cannot be broken for any reason
A duty to warn identifiable third parties of serious threats from patients (Correct answer)

Correct answer: A duty to warn identifiable third parties of serious threats from patients

Tarasoff (1976) established that mental health professionals must take reasonable steps to protect identifiable potential victims when a patient poses a credible threat of serious harm.

Question 17: Which type of validity refers to whether a study's findings can be generalized to other populations or settings?

Internal validity
External validity (Correct answer)
Content validity
Construct validity

Correct answer: External validity

External validity (generalizability) refers to how well a study's findings apply to other populations, settings, or time periods beyond those studied.

Question 18: What is the primary goal of a Balanced Scorecard in healthcare management?

To equally distribute hospital costs among departments
To measure organizational performance across financial, patient, process, and learning dimensions (Correct answer)
To balance nurse-to-patient staffing ratios
To score patient satisfaction surveys

Correct answer: To measure organizational performance across financial, patient, process, and learning dimensions

The Balanced Scorecard is a strategic management tool that tracks performance across four perspectives: financial, customer/patient, internal processes, and learning and growth.

Question 19: Which is the most important part of health psychology?

treatment
mental health (Correct answer)
policies
physical illness

Correct answer: mental health

While health psychology takes a holistic biopsychosocial approach, mental health is a particularly central and important part of the field. Psychological factors, including mental well-being, significantly influence physical health, coping with illness, and adherence to medical treatments. Health psychologists often work to integrate mental and physical health care.

Question 20: Which of the following is a key principle of the Ottawa Charter for Health Promotion (1986)?

Mandating annual health screenings for all citizens
Building healthy public policy to create supportive environments for health (Correct answer)
Clinicians should prescribe exercise to all patients
Eliminating all tobacco products by government mandate

Correct answer: Building healthy public policy to create supportive environments for health

The Ottawa Charter identified five action areas including building healthy public policy, creating supportive environments, and strengthening community action.

Question 21: What does 'PRN' mean on a medication order?

Administer by mouth only
Administer before meals
Administer per nurse's assessment
Administer as needed (Correct answer)

Correct answer: Administer as needed

PRN comes from the Latin 'pro re nata,' meaning 'as the situation demands' or 'as needed,' indicating the medication should only be given when required.

Question 22: Which management approach focuses on continuous improvement of processes to reduce waste and improve patient outcomes?

Scalar chain management
Laissez-faire leadership
Lean methodology (Correct answer)
Matrix management

Correct answer: Lean methodology

Lean methodology, derived from Toyota's production system, emphasizes eliminating waste and improving efficiency in healthcare workflows.

Question 23: What does 'bioavailability' mean in pharmacology?

The speed at which a drug is eliminated from the body
The fraction of an administered dose that reaches systemic circulation in unchanged form (Correct answer)
The total amount of drug stored in body tissues
The ability of a drug to cross the blood-brain barrier

Correct answer: The fraction of an administered dose that reaches systemic circulation in unchanged form

Bioavailability indicates what proportion of a drug dose actually reaches the bloodstream; intravenous administration has 100% bioavailability.

Question 24: Which liver enzyme system is primarily responsible for the metabolism of most drugs in humans?

Cytochrome P450 (CYP450) (Correct answer)
Acetylcholinesterase
Monoamine oxidase (MAO)
Alcohol dehydrogenase

Correct answer: Cytochrome P450 (CYP450)

The cytochrome P450 enzyme family in the liver metabolizes the majority of pharmaceutical drugs, and interactions at these enzymes cause many drug-drug interactions.

Question 25: Which drug class is commonly used as first-line therapy for type 2 diabetes in the US?

Sulfonylureas
Insulin glargine
Metformin (biguanides) (Correct answer)
DPP-4 inhibitors

Correct answer: Metformin (biguanides)

Metformin is the preferred first-line pharmacological treatment for type 2 diabetes per American Diabetes Association guidelines due to its efficacy, safety, and low cost.

Question 26: Which type of muscle fiber is MOST recruited during a 400-meter sprint?

Type I (slow-twitch) fibers
Type IIx (fast-twitch glycolytic) fibers (Correct answer)
Type IIa (fast-twitch oxidative) fibers
Cardiac muscle fibers

Correct answer: Type IIx (fast-twitch glycolytic) fibers

Type IIx fibers generate force rapidly using anaerobic glycolysis and are preferentially recruited during high-intensity, short-duration efforts like sprinting.

Question 27: What does a '95% confidence interval' represent in health research?

A range where 95% of individual data points fall
The precision of the measuring instrument used
The probability that the study result is correct
A range of values within which the true population parameter is expected to fall 95% of the time with repeated sampling (Correct answer)

Correct answer: A range of values within which the true population parameter is expected to fall 95% of the time with repeated sampling

A 95% confidence interval means that if the study were repeated many times, 95% of the calculated intervals would contain the true population value.

Question 28: What does the term 'sensitivity' mean when evaluating a diagnostic test?

The ability of a test to correctly identify individuals who have the disease (true positive rate) (Correct answer)
The ability of a test to correctly identify individuals who do not have the disease
The proportion of negative tests that are truly negative
The proportion of positive tests that are truly positive

Correct answer: The ability of a test to correctly identify individuals who have the disease (true positive rate)

Sensitivity is the proportion of true positives correctly identified by the test; a highly sensitive test misses few actual disease cases (few false negatives).

Question 29: Which of the following correctly describes the role of surfactant in the lungs?

Decreases alveolar surface tension (Correct answer)
Stimulates bronchodilation
Filters inhaled particles
Increases alveolar surface tension

Correct answer: Decreases alveolar surface tension

Pulmonary surfactant, produced by type II pneumocytes, reduces surface tension in the alveoli, preventing collapse during exhalation.

Question 30: Which quality improvement methodology uses a four-step cycle of Plan, Do, Study, Act (PDSA)?

Total quality management
Rapid cycle improvement (Correct answer)
Six Sigma
Root cause analysis

Correct answer: Rapid cycle improvement

The PDSA cycle (Plan-Do-Study-Act) is used in rapid cycle improvement to test small changes quickly and learn from results before scaling successful interventions.

Question 31: What is a 'health impact assessment' (HIA) used for in public health policy?

Calculating the cost-effectiveness of treatments
Assessing an individual's disease risk factors
Measuring hospital performance quality
Evaluating how a proposed policy or project may affect the health of a population (Correct answer)

Correct answer: Evaluating how a proposed policy or project may affect the health of a population

An HIA systematically evaluates the potential health effects of a policy, plan, program, or project on a population and recommends actions to maximize health benefits.

Bachelor of Health Science (BHS) Comprehensive Exam

The BHS Comprehensive Exam evaluates students' mastery of core health science disciplines including anatomy and physiology, public health, healthcare administration, pharmacology, and research methods required for degree completion.

Questions

35 min

Time Limit

70%

To Pass

Checking for saved progress...

Exam Rules

You can skip questions and return to them later
Flag questions for review before submitting
No feedback shown until you submit the entire exam
Unanswered questions count as wrong — answer everything
10 pretest questions are mixed in and don't affect your score
Timer auto-submits when time runs out
Your progress is auto-saved every 30 seconds