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CSET Health Science study materials
CSET Health Science study resources

CSET Health Science practice questions

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Question 1Foundations of Health Science

A patient's medical record must be kept private under federal law. Which U.S. law primarily governs the privacy and security of protected health information held by health care providers?

  1. HIPAA Correct answer.
  2. FDA
  3. OSHA
  4. CLIA

Explanation

HIPAA, the Health Insurance Portability and Accountability Act, sets national standards for protecting individually identifiable health information held by covered entities such as providers and insurers. OSHA addresses workplace safety, the FDA regulates drugs and devices, and CLIA governs laboratory testing quality.

Question 2Foundations of Health Science

Which professional in a hospital is primarily responsible for diagnosing illness and prescribing treatment for patients?

  1. A medical billing specialist
  2. A licensed physician Correct answer.
  3. A central sterile technician
  4. A certified nursing assistant

Explanation

A licensed physician completes medical training and is authorized to diagnose conditions and prescribe treatments. Nursing assistants provide basic patient care under supervision, billing specialists handle insurance claims, and sterile technicians prepare instruments.

Question 3Foundations of Health Science

A researcher wants to test whether a new drug reduces blood pressure compared with a placebo. Which study design provides the strongest evidence of a cause-and-effect relationship?

  1. A case series
  2. A randomized controlled trial Correct answer.
  3. An ecological study
  4. A cross-sectional survey

Explanation

Randomized controlled trials assign participants to treatment or control groups by chance, which balances confounders and supports causal inference. Case series, cross-sectional surveys, and ecological studies are observational and cannot establish causation as strongly.

Question 4Foundations of Health Science

In the chain of infection, which link refers to the place where a pathogen normally lives and multiplies, such as a human body or contaminated water?

  1. Reservoir Correct answer.
  2. Mode of transmission
  3. Portal of exit
  4. Susceptible host

Explanation

The reservoir is the habitat in which an infectious agent normally lives, grows, and multiplies. The portal of exit is how the agent leaves the reservoir, the mode of transmission is how it travels, and the susceptible host is the person who can become infected.

Question 5Foundations of Health Science

A nurse performs hand hygiene before and after every patient contact. Which link in the chain of infection is being interrupted most directly?

  1. Susceptible host
  2. Reservoir
  3. Mode of transmission Correct answer.
  4. Portal of entry

Explanation

Hand hygiene removes transient organisms from the hands, interrupting contact transmission, which is the mode of transmission link. It does not eliminate reservoirs in the patient, nor does it change portals of entry or the host's immune status.

Question 6Foundations of Health Science

Which vital sign measurement reflects the number of times the heart beats per minute?

  1. Respiratory rate
  2. Blood pressure
  3. Pulse rate Correct answer.
  4. Body temperature

Explanation

Pulse rate counts the heartbeats felt per minute and is a core vital sign. Respiratory rate counts breaths, blood pressure measures force against artery walls, and temperature reflects body heat.

Question 7Foundations of Health Science

A patient's blood pressure reads 128/82 mm Hg. Which value represents the diastolic pressure?

  1. 128 mm Hg
  2. 82 mm Hg Correct answer.
  3. 210 mm Hg
  4. 46 mm Hg

Explanation

Blood pressure is recorded as systolic over diastolic. The diastolic pressure, the lower number, is the arterial pressure during ventricular relaxation, which here is 82 mm Hg. The 128 mm Hg is the systolic pressure during ventricular contraction.

Question 8Foundations of Health Science

In medical terminology, the prefix 'tachy-' as in tachycardia indicates which condition?

  1. Rapid or fast Correct answer.
  2. Absent
  3. Slow
  4. Painful

Explanation

The prefix tachy- means fast or rapid, so tachycardia describes a heart rate that is faster than normal. Brady- means slow, a- means without, and -algia refers to pain.

Question 9Foundations of Health Science

Which body plane divides the body into equal left and right halves?

  1. Transverse plane
  2. Midsagittal plane Correct answer.
  3. Oblique plane
  4. Frontal plane

Explanation

The midsagittal plane runs vertically through the midline and divides the body into equal right and left halves. The transverse plane divides the body into upper and lower portions, and the frontal plane divides it into anterior and posterior portions.

Question 10Foundations of Health Science

A physician orders a medication to be given 'PO.' By which route should the medication be administered?

  1. Under the skin
  2. By mouth Correct answer.
  3. Into a muscle
  4. Into a vein

Explanation

PO is an abbreviation for the Latin per os, meaning by mouth. Intramuscular, subcutaneous, and intravenous routes have their own abbreviations such as IM, SC, and IV.

Question 11Foundations of Health Science

Which level of prevention is represented by a mammogram screening program designed to detect breast cancer early in asymptomatic women?

  1. Primary prevention
  2. Tertiary prevention
  3. Quaternary prevention
  4. Secondary prevention Correct answer.

Explanation

Secondary prevention aims to detect disease early, before symptoms appear, so treatment can begin sooner; screening mammography fits this level. Primary prevention prevents disease onset, and tertiary prevention reduces complications after disease is established.

Question 12Foundations of Health Science

A public health campaign encourages adults to receive an annual influenza vaccine. This effort best illustrates which level of prevention?

  1. Secondary prevention
  2. Primary prevention Correct answer.
  3. Tertiary prevention
  4. Quaternary prevention

Explanation

Vaccination prevents infection from occurring in the first place, which is the defining goal of primary prevention. Secondary prevention detects existing disease early, and tertiary prevention manages established disease to reduce complications.

Question 13Foundations of Health Science

Which organization in the United States sets national health objectives, such as Healthy People 2030, to guide public health priorities?

  1. The World Health Organization
  2. The U.S. Department of Health and Human Services Correct answer.
  3. The Joint Commission
  4. The American Medical Association

Explanation

The U.S. Department of Health and Human Services coordinates the Healthy People initiative, which sets measurable national health objectives for the decade. The WHO is an international body, the Joint Commission accredits health care organizations, and the AMA is a professional membership association.

Question 14Foundations of Health Science

Which term describes the number of new cases of a disease occurring in a population during a specified period?

  1. Incidence Correct answer.
  2. Morbidity
  3. Prevalence
  4. Mortality

Explanation

Incidence measures new cases arising in a population over a defined time period, which reflects the risk of developing disease. Prevalence counts all existing cases at a point or period, mortality measures deaths, and morbidity refers to illness generally.

Question 15Foundations of Health Science

A community's water supply becomes contaminated, and many residents develop gastrointestinal illness within days. This pattern is most characteristic of which type of disease transmission?

  1. Direct person-to-person contact
  2. Vector-borne transmission
  3. Airborne droplet spread
  4. Common vehicle exposure Correct answer.

Explanation

A common vehicle exposure occurs when many people are exposed to the same contaminated source, such as water or food, producing a rapid cluster of cases. Person-to-person, vector-borne, and airborne transmission involve different pathways and typically show different patterns.

Question 16Foundations of Health Science

Which component of a balanced diet is the body's primary and most immediate source of energy?

  1. Carbohydrates Correct answer.
  2. Minerals
  3. Proteins
  4. Vitamins

Explanation

Carbohydrates are broken down into glucose, which cells use readily for energy, making them the body's primary fuel source. Proteins support tissue building and repair, while vitamins and minerals regulate body processes but do not supply energy.

Question 17Foundations of Health Science

Which nutrient group includes vitamins A, D, E, and K, which are absorbed with dietary fat?

  1. Fat-soluble vitamins Correct answer.
  2. Essential amino acids
  3. Water-soluble vitamins
  4. Trace minerals

Explanation

Vitamins A, D, E, and K are fat-soluble, meaning they dissolve in fat and are stored in body tissues, so they must be absorbed with dietary fat. Water-soluble vitamins include the B complex and vitamin C, and minerals and amino acids are separate nutrient categories.

Question 18Foundations of Health Science

A patient's chart notes a 'febrile' condition. What does this term indicate?

  1. The patient is dehydrated
  2. The patient has a fever Correct answer.
  3. The patient is unconscious
  4. The patient has no pulse

Explanation

Febrile means related to or characterized by fever, so a febrile patient has an elevated body temperature. The term does not refer to pulse, consciousness, or hydration status.

Question 19Foundations of Health Science

Which document allows a patient to specify in advance the medical treatments they would or would not want if they become unable to make decisions?

  1. An advance directive Correct answer.
  2. A laboratory report
  3. A discharge summary
  4. A consent for surgery

Explanation

An advance directive is a legal document that records a patient's preferences for future medical care, such as a living will or health care proxy, and takes effect when the patient cannot decide. Discharge summaries, surgical consents, and lab reports serve different purposes.

Question 20Foundations of Health Science

A patient refuses a prescribed blood transfusion because of religious beliefs. Which principle of health care ethics most directly supports honoring this decision?

  1. Beneficence
  2. Nonmaleficence
  3. Justice
  4. Autonomy Correct answer.

Explanation

Autonomy respects a patient's right to make informed decisions about their own care, including refusing treatment. Beneficence and nonmaleficence concern doing good and avoiding harm, while justice concerns fairness in distributing care.

Question 21Foundations of Health Science

Which agency enforces workplace safety standards, such as requirements for handling bloodborne pathogens in health care settings?

  1. CDC
  2. OSHA Correct answer.
  3. NIH
  4. HIPAA

Explanation

The Occupational Safety and Health Administration enforces workplace safety rules, including the Bloodborne Pathogens Standard that protects health care workers. HIPAA governs privacy, the CDC provides public health guidance, and the NIH funds and conducts research.

Question 22Foundations of Health Science

Which type of health care facility provides care for patients who do not require an overnight stay, such as same-day surgery and outpatient clinics?

  1. Long-term care facilities
  2. Hospice facilities
  3. Ambulatory care facilities Correct answer.
  4. Inpatient hospitals

Explanation

Ambulatory care facilities provide services such as same-day surgery, diagnostics, and outpatient visits without an overnight stay. Long-term care and hospice provide extended or end-of-life care, and inpatient hospitals admit patients for overnight treatment.

Question 23Foundations of Health Science

A hospital wants to reduce medication errors by requiring two nurses to independently verify high-alert drug doses before administration. Which quality improvement strategy does this best represent?

  1. A cost-containment measure
  2. A standardized safety protocol Correct answer.
  3. A staffing reduction plan
  4. A marketing initiative

Explanation

Independent double-checking of high-alert medications is a standardized safety protocol designed to catch errors before they reach the patient. It targets patient safety rather than cost, marketing, or staffing levels.

Question 24Foundations of Health Science

Which term describes the process by which a health care organization is reviewed against established standards and granted formal approval to operate?

  1. Certification of an individual
  2. Licensure of a physician
  3. Accreditation Correct answer.
  4. Reimbursement

Explanation

Accreditation is the review of an entire organization, such as a hospital, against quality and safety standards set by an accrediting body. Certification and licensure apply to individuals, and reimbursement refers to payment for services.

Question 25Foundations of Health Science

A community health program reports that the prevalence of diabetes is much higher than its incidence. Which interpretation is most reasonable?

  1. The disease is spreading very rapidly through the community.
  2. The program has failed to detect any cases of diabetes.
  3. Many people are living with existing diabetes, and few new cases are occurring. Correct answer.
  4. The mortality rate from diabetes must be extremely high.

Explanation

Prevalence counts all existing cases, while incidence counts only new cases. A high prevalence relative to incidence suggests a large pool of people already living with the disease and a low rate of new infections or diagnoses.

Question 26Foundations of Health Science

A health science student is reading a patient's chart and sees the abbreviation 'BP' recorded with two numbers. Which vital sign does this abbreviation represent?

  1. Body temperature
  2. Pulse oximetry
  3. Blood pressure Correct answer.
  4. Respiratory rate

Explanation

BP is the standard chart abbreviation for blood pressure, the force exerted by circulating blood against arterial walls, recorded as systolic over diastolic values. The other measurements are documented with their own distinct abbreviations and units, so the label BP identifies only blood pressure.

Question 27Foundations of Health Science

A patient is positioned lying face down on the examination table. Which anatomical position term describes this orientation?

  1. Supine
  2. Fowler
  3. Prone Correct answer.
  4. Trendelenburg

Explanation

Prone means lying face down with the anterior body surface against the table. Supine is the opposite orientation, and Fowler and Trendelenburg describe head-elevated and head-down bed positions rather than face-down lying.

Question 28Foundations of Health Science

A physician documents that a patient's pain is located in the epigastric region. Where is this region found?

  1. The lateral aspect of the right flank
  2. The left lower quadrant near the groin
  3. The lower right quadrant near the appendix
  4. The central upper abdomen just below the sternum Correct answer.

Explanation

The epigastric region is the central portion of the upper abdomen, positioned above the umbilical region and below the sternum. The abdominal regions are mapped in a grid, so the epigastric area sits in the midline rather than in a lower or lateral quadrant.

Question 29Foundations of Health Science

A patient has a documented inflammation of the liver. Which medical term names this condition?

  1. Hepatitis Correct answer.
  2. Carditis
  3. Gastritis
  4. Nephritis

Explanation

The combining form hepat- refers to the liver, and the suffix -itis means inflammation, so hepatitis is inflammation of the liver. Each other option pairs a different organ root with the same suffix, identifying inflammation of the kidney, stomach, or heart.

Question 30Foundations of Health Science

A patient is instructed to take a medication on an empty stomach. Which instruction term is used in health care to describe this timing?

  1. NPO
  2. PC
  3. PRN
  4. AC Correct answer.

Explanation

AC stands for ante cibum, meaning before meals, which is the instruction used when a drug should be taken on an empty stomach. PC means after meals, PRN means as needed, and NPO means nothing by mouth, so none of those describes pre-meal dosing.

Question 31Foundations of Health Science

A patient's care plan lists a nursing diagnosis of impaired skin integrity. Which element of the nursing process does this diagnosis represent?

  1. Assessment
  2. Planning
  3. Evaluation
  4. Diagnosis Correct answer.

Explanation

The nursing process moves through assessment, diagnosis, planning, implementation, and evaluation. Formulating a nursing diagnosis such as impaired skin integrity is the second step, in which collected data are interpreted into a clinical judgment about the patient.

Question 32Foundations of Health Science

A patient with a chronic illness is taught to record daily weights and report gains of more than two pounds in one day. Which level of prevention does this teaching represent?

  1. Tertiary prevention Correct answer.
  2. Primary prevention
  3. Primordial prevention
  4. Secondary prevention

Explanation

Tertiary prevention focuses on limiting disability and complications in people who already have a disease, which is exactly the purpose of monitoring for early signs of fluid overload. Primary prevention acts before disease occurs, and secondary prevention targets early detection in asymptomatic people.

Question 33Foundations of Health Science

Which term describes the proportion of a population that has a disease at a specific point in time?

  1. Attack rate
  2. Point prevalence Correct answer.
  3. Incidence
  4. Case fatality rate

Explanation

Point prevalence measures how many people have a condition at one specific moment, expressed as a proportion of the population. Incidence measures new cases over a period, the attack rate describes illness among exposed people in an outbreak, and case fatality describes deaths among diagnosed cases.

Question 34Foundations of Health Science

A patient asks why a medication was prescribed at a much lower dose than the dose used for another condition. Which concept best explains why the same drug can have different doses for different indications?

  1. Dose is chosen based on the desired effect and the patient's tolerance Correct answer.
  2. Therapeutic index varies with the indication being treated
  3. Medication dose depends only on the patient's body weight
  4. Drugs always have a single fixed dose regardless of use

Explanation

Dosing is determined by the therapeutic goal, the condition being treated, and patient factors such as age, weight, and organ function. A drug can therefore be given at different doses for different indications, and no single rule fixes the dose for every use.

Question 35Foundations of Health Science

A patient's blood pressure is 118/76 mm Hg. Which statement correctly interprets these readings?

  1. 118 is the systolic pressure during ventricular contraction; 76 is the diastolic pressure during relaxation Correct answer.
  2. 118 is the diastolic pressure; 76 is the systolic pressure
  3. 118 is the pulse pressure; 76 is the mean arterial pressure
  4. 118 is the pressure when the heart relaxes; 76 is the pressure when it contracts

Explanation

In a blood pressure reading, the higher first number is systolic pressure, generated when the ventricles contract, and the lower second number is diastolic pressure, measured as the heart relaxes. A reading of 118/76 therefore places 118 as systolic and 76 as diastolic.

Question 36Foundations of Health Science

A patient's respiratory rate is recorded as 22 breaths per minute. Which term correctly describes this finding?

  1. Apnea
  2. Dyspnea
  3. Tachypnea Correct answer.
  4. Bradypnea

Explanation

A normal adult respiratory rate is about 12 to 20 breaths per minute, so 22 exceeds the expected range and is termed tachypnea. Bradypnea is abnormally slow breathing, apnea is absence of breathing, and dyspnea is the subjective sensation of difficult breathing.

Question 37Foundations of Health Science

A medical record states that a patient has a history of myocardial infarction. Which event does this term describe?

  1. An infection of the heart valves
  2. A blood clot in a leg vein
  3. Death of heart muscle from interrupted blood supply Correct answer.
  4. A narrowing of the coronary arteries without tissue damage

Explanation

Myocardial infarction means death of heart muscle tissue caused by blockage of blood flow through a coronary artery. A clot in a leg vein is a deep vein thrombosis, valve infection is endocarditis, and narrowing without damage is coronary artery disease rather than infarction.

Question 38Foundations of Health Science

A patient reports dizziness when standing up quickly, and the nurse notes a drop in blood pressure upon standing. Which term best describes this finding?

  1. Syncope
  2. Orthostatic hypotension Correct answer.
  3. Hypertensive crisis
  4. Angina pectoris

Explanation

Orthostatic hypotension is a fall in blood pressure that occurs when a person moves from lying or sitting to standing, producing symptoms such as dizziness. Syncope is the loss of consciousness itself, and hypertensive crisis and angina describe very different cardiovascular events.

Question 39Foundations of Health Science

A patient has a condition in which the thyroid gland produces excessive hormone. Which prefix correctly describes this increased function?

  1. Hypo-
  2. Brady-
  3. Dys-
  4. Hyper- Correct answer.

Explanation

The prefix hyper- means excessive or above normal, so hyperthyroidism describes overproduction of thyroid hormone. Hypo- means deficient, brady- means slow, and dys- means difficult or abnormal, none of which indicates excess.

Question 40Foundations of Health Science

A patient is asked to sign a form before surgery that explains the procedure, its risks, and alternatives. Which ethical principle is most directly supported by this process?

  1. Justice
  2. Beneficence
  3. Autonomy Correct answer.
  4. Nonmaleficence

Explanation

Informed consent supports autonomy by ensuring patients understand a procedure and voluntarily authorize it. Beneficence and nonmaleficence concern acting for the patient's benefit and avoiding harm, while justice concerns fair distribution of care.

Question 41Foundations of Health Science

A hospital charges its ethics committee with reviewing a case in which a family and care team disagree about continuing life-sustaining treatment. Which function does the committee primarily serve?

  1. Determining the hospital's annual budget for patient care
  2. Providing consultation and recommendations on ethical conflicts Correct answer.
  3. Certifying clinical staff in advanced life support
  4. Enforcing state licensing requirements for physicians

Explanation

Ethics committees provide consultation and recommendations when values conflict arise in patient care. They do not license physicians, set budgets, or certify clinical skills, which are handled by regulatory bodies or other departments.

Question 42Foundations of Health Science

A health care worker is exposed to a patient's blood through a needlestick. Which agency's standard requires the employer to have an exposure control plan and offer post-exposure evaluation?

  1. Centers for Medicare and Medicaid Services
  2. Food and Drug Administration
  3. National Institutes of Health
  4. Occupational Safety and Health Administration Correct answer.

Explanation

The Occupational Safety and Health Administration's bloodborne pathogens standard requires employers to maintain an exposure control plan and provide post-exposure evaluation and follow-up. The other agencies regulate drugs and devices, payment and coverage, or research rather than workplace exposure rules.

Question 43Foundations of Health Science

A patient is admitted to a facility for rehabilitation after a stroke and will stay for several weeks. Which type of facility best matches this level of care?

  1. Community pharmacy
  2. Ambulatory surgical center
  3. Urgent care clinic
  4. Inpatient rehabilitation hospital Correct answer.

Explanation

An inpatient rehabilitation hospital provides intensive therapy with overnight stays for patients recovering from events such as stroke. Ambulatory surgical centers and urgent care clinics provide same-day services without admission, and a pharmacy dispenses medications rather than delivering rehabilitation care.

Question 44Foundations of Health Science

A clinic implements a checklist that requires staff to confirm patient identity and the surgical site before an operation begins. Which goal of risk management does this practice most directly address?

  1. Reducing the frequency of preventable adverse events Correct answer.
  2. Increasing the facility's insurance premiums
  3. Shortening the time required to schedule procedures
  4. Expanding the range of services the clinic offers

Explanation

Risk management aims to identify and reduce hazards that can harm patients, and a surgical safety checklist prevents wrong-site and wrong-patient errors. Such practices are not intended to raise premiums, alter scheduling speed, or expand services.

Question 45Foundations of Health Science

A public health department reports that a disease has a high incidence but a low prevalence. Which explanation is most consistent with these data?

  1. The disease affects only people who have already been diagnosed
  2. The disease has been eliminated from the population
  3. The disease is extremely rare in the population
  4. The disease lasts only a short time, so cases resolve or cause death quickly Correct answer.

Explanation

Prevalence depends on both how many new cases occur and how long each case lasts. A disease with many new cases but short duration will show high incidence and low prevalence because people leave the affected group quickly.

Question 46Foundations of Health Science

A screening test is described as having high sensitivity but low specificity. Which consequence should a clinician expect?

  1. Most people with the disease are detected, but many without it also test positive Correct answer.
  2. Most people without the disease are correctly cleared, but cases are frequently missed
  3. The test produces identical results regardless of disease status
  4. The test accurately predicts who will develop the disease in the future

Explanation

Sensitivity is the ability to identify people who truly have the disease, while specificity is the ability to identify those who do not. High sensitivity with low specificity means few cases are missed but false positives are common, so many healthy people also screen positive.

Question 47Foundations of Health Science

A researcher wants to study whether a new drug prevents a rare outcome and therefore enrolls participants based on whether they take the drug, then follows them forward in time. Which study design does this describe?

  1. Cohort study Correct answer.
  2. Randomized controlled trial
  3. Cross-sectional survey
  4. Case-control study

Explanation

A cohort study groups participants by exposure status and follows them forward to observe outcomes, which suits studying rare outcomes when the exposure is uncommon. Case-control studies begin with outcome status, cross-sectional surveys measure exposure and outcome simultaneously, and randomized trials assign exposure rather than observing it.

Question 48Foundations of Health Science

A hospital's medication error rate falls after a new barcode scanning system is introduced, but staff also received refresher training in the same month. Which issue most limits the conclusion that the barcode system caused the improvement?

  1. Lack of a measurable outcome variable
  2. Use of an excessively large sample
  3. Confounding by a simultaneous intervention Correct answer.
  4. Absence of a control group in a case series

Explanation

Because two changes occurred at once, the improvement cannot be attributed to the barcode system alone; the concurrent training is a confounding variable. The outcome was measured and the sample size is not the central problem, so confounding is the key limitation.

Question 49Foundations of Health Science

A patient with kidney impairment is prescribed a drug that is eliminated mainly by the kidneys. Which adjustment is most appropriate?

  1. Increase the dose to compensate for faster clearance
  2. Give the standard dose but monitor for a shorter period
  3. Reduce the dose or extend the dosing interval Correct answer.
  4. Switch to a route that bypasses the kidneys entirely

Explanation

When renal elimination is impaired, the drug can accumulate and reach toxic levels, so the dose is reduced or the interval extended to match the slower clearance. Increasing the dose or shortening monitoring would raise the risk of toxicity, and changing route does not necessarily avoid renal elimination.

Question 50Foundations of Health Science

A community clinic wants to compare how many new cases of influenza occurred during one winter season with how many cases existed at any one moment during that season. Which pair of epidemiologic measures should the clinic use for these two comparisons?

  1. Attack rate for new cases and mortality rate for existing cases
  2. Prevalence for new cases and incidence for existing cases
  3. Mortality rate for new cases and attack rate for existing cases
  4. Incidence for new cases and prevalence for existing cases Correct answer.

Explanation

Incidence measures the number of new cases arising in a population over a defined period, so it fits the count of new influenza infections during the winter. Prevalence measures all existing cases at a given time, regardless of when they began, so it fits the snapshot of cases present at one moment. The two measures answer different questions and should not be swapped.