Free BLS, ACLS, PALS & CPR Scenario Simulator
Practice emergency response and clinical decision-making with free, interactive scenarios and megacodes. Work through realistic emergencies, choose what to do next, and review the explanation behind each decision. No registration required, and every scenario works on phones, tablets, and computers.
Advanced Cardiovascular Life Support
Practice ACLS megacode scenarios covering cardiac arrest algorithms, rhythm recognition, medication administration, and team leadership under pressure.
Get Certified in ACLSDizziness and Weakness in the Emergency Department
You are leading the care team in the emergency department. A 67-year-old man reports 30 minutes of intermittent dizziness, weakness, and nausea. He is alert and speaking clearly. His pulse is regular at 44/min, blood pressure is 118/72 mm Hg, respiratory rate is 18/min, and oxygen saturation is 96% on room air. A nurse and cardiac monitor are at the bedside. IV supplies, emergency medications, a monitor/defibrillator with pacing capability, and additional team members are immediately available.
Sudden Cardiac Arrest in the Emergency Department
You are leading the resuscitation team in the emergency department. A 62-year-old man with 30 minutes of central chest pressure is being connected to the cardiac monitor when he suddenly loses consciousness. Immediately before the collapse, he was alert, his blood pressure was 138/84 mm Hg, and his oxygen saturation was 96% on room air. A nurse and respiratory therapist are at the bedside. The resuscitation cart and monitor/defibrillator are immediately available, and additional team members are responding.
Sudden Collapse on a Telemetry Unit
You are leading a rapid response on a telemetry unit. A 48-year-old woman is being monitored after an episode of unexplained near-syncope. When you arrive, she is alert and reports intermittent palpitations. Her pulse is 92/min, blood pressure is 118/74 mm Hg, respiratory rate is 18/min, and oxygen saturation is 97% on room air. A nurse, respiratory therapist, functioning peripheral IV, emergency medications, and a monitor/defibrillator are immediately available.
Sudden Deterioration in the Intensive Care Unit
You arrive as the code leader in the intensive care unit. A 58-year-old woman was alert and hemodynamically stable before a right subclavian central venous catheter was placed approximately 10 minutes ago. Shortly afterward, she developed sudden shortness of breath, became hypotensive, and lost consciousness. The bedside nurse found no normal breathing and could not feel a carotid pulse within 10 seconds. The resuscitation response was activated, and CPR is already in progress. A respiratory therapist is providing bag-mask ventilation with oxygen, and the monitor/defibrillator is being attached.
Sudden Lightheadedness in the Cardiac Observation Unit
You are leading a rapid response in a cardiac observation unit. A 67-year-old man reports sudden palpitations and lightheadedness. He is alert and answers questions appropriately. His pulse is regular at 166/min, blood pressure is 116/72 mm Hg, respiratory rate is 20/min, and oxygen saturation is 96% on room air. He denies chest discomfort and shortness of breath. There are no signs of shock or acute heart failure. A nurse, cardiac monitor, functioning peripheral IV, emergency medications, and a monitor/defibrillator are immediately available.
Sudden Palpitations in the Emergency Department
You are leading the care team in the emergency department. A 54-year-old woman reports a sudden racing heartbeat and lightheadedness that began about 20 minutes ago. She is alert and speaking clearly. Her pulse is regular at 178/min, blood pressure is 112/74 mm Hg, respiratory rate is 18/min, and oxygen saturation is 97% on room air. She denies chest discomfort and shortness of breath. A nurse, cardiac monitor, IV supplies, emergency medications, and a monitor/defibrillator are immediately available.
Pediatric Advanced Life Support
Practice PALS scenarios covering pediatric assessment, weight-based dosing, airway management, and shock and arrest algorithms for infants and children.
Get Certified in PALSDizziness and a Rapid Pulse in the Pediatric Emergency Department
You are leading the care team in the pediatric emergency department. An 11-year-old child weighing 30 kg reports that their heart suddenly began racing while they were sitting in class. The child became lightheaded but did not lose consciousness. The child has a history of repaired congenital heart disease and takes no antiarrhythmic medication. The child is alert and answers questions appropriately. The airway is open, breathing is unlabored, respiratory rate is 22/min, and oxygen saturation is 98% on room air. The pulse is rapid and regular. Blood pressure is 104/66 mm Hg, peripheral pulses are palpable, capillary refill is 2 seconds, and the skin is warm. A nurse, respiratory therapist, emergency physician, and medication clinician are present. Pediatric cardiology consultation is available.
Fever and Worsening Perfusion in the Pediatric Emergency Department
You are leading the care team in the pediatric emergency department. A 5-year-old child weighing 18 kg has had a high fever and increasing lethargy since yesterday. The parent reports that the child has urinated only once today and has had no major vomiting, diarrhea, bleeding, or known heart disease. The child opens their eyes to speech but interacts less than usual. The airway is open, breathing is spontaneous without retractions, respiratory rate is 30/min, and oxygen saturation is 96% on room air. Heart rate is 154/min, blood pressure is 94/56 mm Hg and within the expected range for age, temperature is 40.1 degrees Celsius, the skin is warm and flushed, capillary refill is brisk, and peripheral pulses are bounding. A nurse and respiratory therapist are present. Monitoring, oxygen and ventilation equipment, IV and IO supplies, isotonic crystalloid, emergency medications, antimicrobial therapy, and pediatric critical care consultation are available.
Sudden Collapse After a Bedside Procedure
You are leading the care team in the pediatric intensive care unit. A 7-year-old child weighing 22 kg is being treated for a serious infection. A left subclavian central venous catheter was placed 15 minutes ago because the child's peripheral access had become unreliable. One peripheral IV remains functional. The child suddenly develops severe respiratory distress and becomes unresponsive. A nurse, respiratory therapist, pediatric critical care clinician, and medication clinician are present. Oxygen, bag-mask equipment, pediatric airway equipment, IV and IO supplies, emergency medications, a manual defibrillator, and equipment for emergency chest decompression are immediately available.
Sudden Collapse During Emergency Evaluation
You are leading the care team in the pediatric emergency department. An 8-year-old prepubertal child weighing 25 kg has chronic kidney disease and receives hemodialysis. The child was brought in for weakness and nausea after missing the most recent dialysis session. While the nurse is applying the monitor, the child suddenly collapses. A nurse, respiratory therapist, and emergency physician are present. Oxygen, bag-mask equipment, pediatric airway equipment, IV and IO supplies, emergency medications, a manual defibrillator, and point-of-care testing are immediately available.
Sudden Palpitations in the Pediatric Emergency Department
You are leading the care team in the pediatric emergency department. A 6-year-old child weighing 20 kg is brought in after suddenly telling a parent that their heart was racing. The symptoms began about 20 minutes ago while the child was sitting quietly. The child had been well earlier in the day and has no fever, pain, vomiting, diarrhea, breathing difficulty, known heart disease, or known medication or toxin exposure. The child is alert and speaking. The airway is open, breathing is unlabored, respiratory rate is 24/min, and oxygen saturation is 98% on room air. The pulse is very rapid and regular. Blood pressure is 100/64 mm Hg, the skin is warm, capillary refill is 2 seconds, and peripheral pulses are palpable. A nurse, respiratory therapist, emergency physician, and medication clinician are present. Pediatric cardiology consultation is available by phone.
Worsening Breathing in the Pediatric Emergency Department
You are leading the care team in the pediatric emergency department. A 4-year-old child weighing 16 kg has a history of asthma and has had worsening cough and difficulty breathing since the previous evening. The child is sitting upright, appears anxious, and speaks only one or two words at a time. Respiratory rate is 44/min, heart rate is 156/min, blood pressure is 94/58 mm Hg, and oxygen saturation is 88% on room air. Marked intercostal and suprasternal retractions are visible. A nurse and respiratory therapist are at the bedside. Oxygen, suction, airway adjuncts, bag-mask equipment, pediatric advanced-airway equipment, emergency medications, vascular-access supplies, and a monitor/defibrillator are immediately available. Additional team members are responding.
Basic Life Support
Practice BLS scenarios and megacode cases covering adult, child, and infant CPR, AED use, choking, and team-based resuscitation for healthcare providers.
Get Certified in BLSOpioid Overdose Unresponsive Post Surgical Patient
You are a nurse on a surgical floor doing routine post-op rounds. Your patient is a 54-year-old woman who had a total abdominal hysterectomy 6 hours ago. She received morphine and fentanyl in recovery, then hydromorphone IV for breakthrough pain. When you enter the room for her next vital sign check, she does not respond to your greeting. Her breathing is slow and shallow, about 4 to 5 breaths per minute, and her pupils are pinpoint.
Unresponsive Infant on the Pediatric Unit
You are a nurse on the pediatric unit. A monitor alarm pulls you into the room of a 4-month-old infant admitted for bronchiolitis and RSV. The baby is in a crib and is not moving. There is no visible breathing effort, and the color looks wrong. You are the first person in the room, and you are alone.
Unwitnessed Cardiac Arrest on a Medical Surgical Unit
You are a nurse on a busy medical-surgical unit. A 43-year-old male patient admitted for abdominal pain has been stable all day. You enter his room to give scheduled afternoon medications. The room is quiet, the TV is off, and the patient is completely still in bed. You call his name and tap his shoulders, but there is no response.
CPR, AED & First Aid Certification
Practice CPR, AED, and First Aid scenarios built for everyday emergencies involving adults, children, and infants at home, at work, at school, and in public places.
Get Certified in CPRAdult Choking
You’re in a busy restaurant during dinner service. A man at the next table suddenly stands up, grabs his throat, and looks panicked. His face is turning red, he can’t speak, and the people around him are unsure what to do. A few seconds later, chairs are moving, people are shouting, and all eyes are on you.
Adult Collapse at Home
It’s early evening and you’re at home with a family member. One moment they’re standing in the kitchen talking to you, and the next they suddenly collapse onto the floor. You’re alone in the house, your phone is on the counter nearby, and there is no AED immediately available.
Adult Collapse in Public
You’re at a busy public gym on a weekday evening. Music is playing, people are moving between machines, and a man in his 50s suddenly collapses near the cardio area. For a second, nobody reacts. Then a small crowd starts forming. Someone says, “I think he just fainted.” You notice an AED mounted on the wall about 20 meters away.
Child Collapse at School
It’s late morning at school, and children are lining up after recess. A 7-year-old suddenly drops to the ground near the playground gate. A teacher kneels beside the child, looking alarmed, while several other children start crowding around. The school office has an AED, and another staff member is nearby.
Gasping Is Not Normal Breathing
You’re in a busy shopping mall on a Saturday afternoon. A man in his 60s suddenly collapses near the entrance. People stop, stare, and start talking all at once. One person kneels beside him and says, “He’s making sounds, I think he’s breathing.” Another person is already taking out their phone, but nobody has taken control yet. An AED is mounted on the wall nearby.
Infant Choking
You’re at a busy family café on a weekend afternoon. An 8-month-old infant in a high chair suddenly goes quiet while eating. The baby looks distressed, cannot cry normally, and is struggling to breathe. A parent nearby is panicking, and several people are standing close, unsure what to do. A staff member says there is an AED in the building.
Infant Unresponsive
You’re at a small daycare just after lunch. An 8-month-old infant suddenly becomes limp and unresponsive while being carried by a staff member. The baby is placed on a padded play mat, and everyone freezes for a second. One employee is nearby, and there is an AED in the front office.