Passing the Health & Safety Institute (HSI) CPR, AED, and First Aid certification exam requires mastering specific resuscitation metrics, chain-of-survival sequences, and age-based clinical variations. Whether you're a healthcare professional, workplace responder, or community caregiver, exams test your precise judgment under pressure.
This guide breaks down core HSI testing concepts, exact technical metrics, scenario-based evaluation traps, and frequent exam stumbling blocks so you can pass your written and practical assessments with confidence.
Core Metrics and Compression Standards
HSI written exams focus heavily on precise numerical standards set by international resuscitation guidelines. Memorizing these figures is essential for multiple-choice scenarios.
- Adult Compression Rate: Deliver between 100 and 120 compressions per minute for adults, children, and infants alike.
- Compression Depth: Push at least 2 inches (roughly 5 cm) deep for adults, about two inches (one-third chest depth) for children, and about 1.5 inches (one-third chest depth) for infants.
- Compression-to-Ventilation Ratios: For single rescuers across all age groups, use a 30:2 ratio. For two-rescuer CPR on children and infants, the ratio shifts to 15:2.
- Ventilation Duration: Deliver each rescue breath over 1 second, ensuring you only see visible chest rise to avoid excessive ventilation.
Allowing complete chest recoil between compressions is another frequently tested variable. Leaning on the chest prevents the heart from refilling adequately between pumps, which drastically reduces blood flow. To explore the complete picture, we recommend the detailed analysis by The New York Times.
Navigating Adult vs. Pediatric Scenarios
Exam questions frequently test your ability to differentiate patient age categories and alter interventions accordingly.
For HSI protocol purposes, an adult is defined as someone exhibiting signs of puberty or older. A child spans from age one to puberty, while an infant includes anyone under one year of age (excluding newborns immediately after birth).
When dealing with an unresponsive adult who has collapsed suddenly, the priority is verifying scene safety, checking for responsiveness, activating emergency medical services (EMS), and retrieving an Automated External Defibrillator (AED) immediately.
For an unresponsive infant or child where collapse is sudden and unobserved, single rescuers should perform about two minutes (or five cycles) of CPR before leaving to activate EMS, prioritizing oxygenation for potential asphyxial arrests.
Automated External Defibrillator (AED) Rules
AED questions make up a large portion of HSI tests. Keep these principles in mind:
- Pad Placement: Apply adult pads to victims 8 years of age and older. Never use pediatric pads on an adult or older child, as the delivered energy level will be insufficient.
- Hairy Chests: If the AED prompts an error or fails to analyze due to excessive chest hair, quickly shave the area if a razor is available, or rip the pads off to wax the hair and apply a fresh set.
- Water and Metal: Pull patients away from standing puddles of water before defibrillation, and remove medication patches on the chest wall using gloved hands before placing AED pads directly on the skin.
Handling Choking and Airway Obstructions
Test scenarios involving foreign body airway obstructions (FBOA) require distinct handling depending on consciousness and age.
For a responsive adult or child with a severe obstruction (clutching the throat, unable to speak or cough), stand behind the victim and deliver upward abdominal thrusts (the Heimlich maneuver). For pregnant or obese patients where abdominal wraps are impractical, shift your hand placement to chest thrusts.
If a choking victim becomes unresponsive, lower them safely to the floor. Immediately begin CPR starting with chest compressions—do not check for a pulse first. Each time you open the airway to deliver breaths, look inside the mouth for a visible foreign object. Only sweep the mouth if you see an object; never perform blind finger sweeps, as they push obstructions deeper into the airway.
Common Exam Traps to Avoid
Test-writers often design distractors based on common human errors during real emergencies. Watch out for these pitfalls:
- Checking Pulses Too Long: Spend no more than 10 seconds checking for a carotid pulse (adult/child) or a brachial pulse (infant). If you aren't completely sure you feel a pulse, start compressions.
- Interrupting Compressions: Minimizing interruptions is vital. Aim for a chest compression fraction above 80%. Pauses for rhythm checks or ventilation should never exceed 10 seconds.
- Ignoring Agonal Gasps: Snoring, snorting, or occasional gasping sounds are agonal gasps, not normal breathing. Treat agonal gasps as cardiac arrest and begin CPR immediately.
For official guidelines and comprehensive program handbooks, review the Health & Safety Institute portal or reference resuscitation standards via the American Heart Association.
Frequently Asked Questions
What passing score is required for the HSI CPR written exam?
Passing scores typically range from 70% to 80% depending on the specific workplace or regulatory standard tied to your certification. You must also successfully pass the hands-on practical skills evaluation observed by an authorized instructor.
How often do I need to renew my HSI CPR certification?
HSI certifications generally expire two years from the date of issue. Periodic renewal ensures responders stay current with updated International Liaison Committee on Resuscitation (ILCOR) guidelines.
What should I do if a pediatric patient has a pulse under 60 bpm with poor perfusion?
If an infant or child displays a heart rate below 60 beats per minute paired with signs of poor perfusion (mottled skin, extreme paleness, cool extremities) despite adequate oxygenation and ventilation, you must begin chest compressions immediately.
Can I perform Hands-Only CPR if I don't have a barrier device?
Yes. If you are untrained, unwilling, or unequipped to deliver rescue breaths, Hands-Only CPR (continuous chest compressions at 100 to 120 per minute) is vastly superior to doing nothing and keeps oxygenated blood circulating during the first critical minutes of adult cardiac arrest.
