Multiple Choice
1. The single most important step in infection control is:
- a) Wearing gloves
- b) Hand hygiene
- c) Wearing a gown
- d) Using a mask
2. A tympanic temperature reading is typically:
- a) Lower than oral
- b) The same as oral
- c) 0.5 to 1 degree F higher than oral
- d) 3 degrees F higher than oral
3. The first choice for venipuncture is the:
- a) Cephalic vein
- b) Basilic vein
- c) Median cubital vein
- d) Dorsal hand vein
4. The correct angle for an intramuscular injection is:
- a) 15 degrees
- b) 45 degrees
- c) 90 degrees
- d) 5 degrees
5. A TB skin test is given:
- a) Intramuscularly
- b) Subcutaneously
- c) Intradermally
- d) Intravenously
6. Standard precautions apply to:
- a) Only patients with known infections
- b) Every patient, every encounter
- c) Only blood and body fluids
- d) Only patients in isolation
7. The C in the RACE fire response acronym stands for:
- a) Call
- b) Contain
- c) Confine
- d) Cover
8. The compression rate for adult CPR is:
- a) 60 to 80 per minute
- b) 80 to 100 per minute
- c) 100 to 120 per minute
- d) 120 to 140 per minute
9. A clean-catch midstream urine requires the patient to:
- a) Save the first void of the day
- b) Cleanse front to back, catch the middle portion
- c) Collect all urine for 24 hours
- d) Use a catheter
10. The dorsogluteal injection site is avoided when possible because of the risk of injury to the:
- a) Femoral artery
- b) Sciatic nerve
- c) Brachial plexus
- d) Ulnar nerve
11. An ID injection is given at what angle?
- a) 5 to 15 degrees
- b) 45 degrees
- c) 90 degrees
- d) 30 degrees
12. A "trailing zero" on a dose (1.0 mg) is dangerous because:
- a) It can be misread as a 10-fold overdose
- b) It costs more
- c) It cannot be billed
- d) It is not recognized by the pharmacy
Answer Key
1. b — hand hygiene is the foundation
2. c — tympanic runs about 0.5 to 1 degree F higher than oral
3. c — the median cubital is the first choice
4. c — IM injections go in at 90 degrees
5. c — TB skin tests are given intradermally
6. b — standard precautions apply to every encounter
7. c — Confine the fire by closing doors
8. c — 100 to 120 per minute is the AHA standard
9. b — cleanse front to back, catch the middle portion
10. b — the sciatic nerve lies beneath the dorsogluteal
11. a — ID is given at 5 to 15 degrees
12. a — a missing decimal can multiply the dose by ten
Additional Practice Questions and Scenarios
When you encounter practice questions on this topic, apply the following framework:
1. <strong>Identify the question type</strong> — recall, application, or analysis
2. <strong>Locate the relevant rule</strong> in your notes or in the CNA blueprint
3. <strong>Eliminate obviously wrong answers</strong> — look for absolute terms (always, never), distractors with mismatched units, or procedures that violate safety
4. <strong>Select the most specific correct answer</strong> — not the most general one
5. <strong>Check your reasoning</strong> — does the answer match what you'd actually do in a real-world scenario?
Common Mistakes to Avoid
- Picking the most general correct answer instead of the most specific one
- Skipping the calculation or assumption verification step
- Forgetting to apply safety rules (PPE, hand hygiene, isolation)
- Confusing similar-sounding terms (e.g., "disinfection" vs "sterilization")
- Misreading the question stem — especially negation ("EXCEPT" or "NOT")
Time Management
Plan 30-45 seconds per multiple-choice question. If you're stuck, flag for review and move on. Return to flagged questions only after answering the easier ones. Do not spend more than 90 seconds on a single question — even the most challenging exam questions should not require more than 90 seconds.
Frequently Asked Questions
Q: How do I apply this content on exam day?
A: Read the question stem carefully, identify the *most specific* correct answer, and use the rule of elimination to remove obviously wrong choices. On exam day, time management matters more than depth of knowledge — aim for 30-45 seconds per question.
Q: What if two answers both seem correct?
A: Pick the one that matches the *more specific* rule. NHA, EPA, ASCP, and NRA exam writers reward policy-precision: a more general statement might be technically true but a more specific statement is what the exam is testing.
Q: How does this topic connect to other domains on the exam?
A: Every content domain on the certification exam connects to several others. Patient care questions assume anatomy knowledge; phlebotomy questions assume infection control; HVAC questions assume refrigerant-cycle knowledge. Build cross-domain mental models as you study.
Q: How long should I spend on this subsection during my study plan?
A: Plan 60-90 minutes per subsection for first-pass reading and note-taking. Spend another 30-60 minutes on practice questions drawn from this subsection. Plan a 15-minute review pass in the week before your exam.
Q: What's the most common mistake candidates make on this topic?
A: Memorizing without understanding. The exam tests recognition of scenarios and application of rules, not word-for-word recall. Focus on understanding the *why* behind each rule and you'll be able to apply it to unfamiliar scenarios on exam day.
Q: Where can I find authoritative sources for this content?
A: The candidate handbook published by your certifying body (NHA, ASCP, NRA, EPA) is the primary reference. Secondary references include the CDC Infection Control guidelines, CLSI GP41, FDA Food Code, ASHRAE standards, and ACCA manuals.
Cross-References to Other Subsections
This topic connects to several other subsections on the certification exam. Build mental bridges between these domains as you study:
- <strong>Patient-care topics</strong> connect to anatomy and physiology
- <strong>Infection control</strong> connects to phlebotomy, EKG, and pharmacology
- <strong>Pharmacology</strong> connects to medical terminology and law/ethics
- <strong>Specimen handling</strong> connects to safety, infection control, and patient identification
- <strong>Refrigerant management</strong> connects to safety, leak detection, and equipment service
How to Study This Subsection in 30 Minutes
1. <strong>Read the section once at normal pace</strong> (8-10 minutes)
2. <strong>Highlight the rules and definitions</strong> that are explicitly numbered or bolded (3-5 minutes)
3. <strong>Memorize 3-5 key facts</strong> (5-7 minutes)
4. <strong>Take 10 practice questions</strong> on this subsection, focusing on application scenarios (10-12 minutes)
5. <strong>Review the explanations</strong> on every practice question, even the ones you got right (3-5 minutes)
Common Exam Pitfalls
| Pitfall | How to avoid |
|---------|--------------|
| Reading the question stem too quickly | Slow down on the first read; identify the key verb (most appropriate, first, best) |
| Picking the most general answer | Look for the answer with the most specific qualifiers |
| Skipping the calculation step | Always verify math on dosage, conversion, or lab-value questions |
| Confusing similar terms | Build a glossary of similar-sounding terms (disinfect vs sterilize, etc.) |
| Time pressure | Practice timed exams to build exam-day pacing |
| Misreading answer choices | Read every choice before selecting; cross off the wrong ones first |
Self-Check: Do You Know These?
- The three primary rules or definitions from this subsection (write them from memory)
- The 3-5 most common scenarios where this knowledge is applied
- The most common errors candidates make on this topic
- The connections between this topic and other exam domains
If you can't answer any of these from memory, schedule another review pass on this subsection.
Practice Strategy
The most effective practice strategy for this topic is spaced repetition combined with scenario-based questions. Build a flashcard deck of the rules, then take a 10-question practice quiz every 2-3 days. Each time you get a question wrong, write down the rule you missed and review it the next day.
Practice questions should mimic the exam format: scenario stems, four answer choices, and one clearly correct answer. Avoid questions that ask for trivial recall (e.g., "What year was the Clean Air Act passed?") — the exam focuses on application and analysis.
Exam-Day Performance Tips
On exam day, your performance on this topic depends on three things:
1. <strong>Recognizing the scenario</strong> — quickly identifying that a question is testing this topic
2. <strong>Recalling the rule</strong> — pulling the right rule from memory under time pressure
3. <strong>Applying the rule</strong> — selecting the answer that matches the rule, not the most general statement
Practice each of these in your study plan. Use timed practice exams to build exam-day pacing. Use spaced repetition to improve recall. Use scenario-based questions to improve application.
Retention Strategies
Most candidates retain exam content for 2-4 weeks after initial study. To retain this content longer, use these strategies:
- <strong>Spaced repetition</strong>: Review flashcards 1 day, 3 days, 7 days, 14 days, and 30 days after first encounter
- <strong>Teaching</strong>: Explain the topic to a friend, study group, or even a rubber duck. If you can teach it, you know it.
- <strong>Application</strong>: Connect the content to real-world scenarios (work, clinical, or personal)
- <strong>Cross-referencing</strong>: Link this topic to other exam domains in your notes
- <strong>Active recall</strong>: Quiz yourself without looking at the notes
The exam rewards retention over short-term memorization. Plan your study calendar to include multiple review passes on each subsection.