You are en route to a man down. The caller states the patient is not breathing and you are several minutes from the scene. What is the approximate amount of time that the brain can be without oxygen before irreversible brain damage begins?

The NREMT exam asks questions on these topics: - Airway, Respiration & Ventilation - Cardiology & Resuscitation - Trauma - Medical/Obstetrics/Gynecology - EMS Operations All sections, except EMS Operations, have a content distribution of 85% adult and 15% pediatrics [based questions].  Topic weightage: For the EMT exam, 18%-22% of questions asked will cover airway, respiration, and ventilation; 20%-24% will cover cardiology and resuscitation; 14%-18% will cover trauma; 27%-31% will cover medical/obstetrics/gynecology; and 10%-14% will cover EMS operations.  For the EMR, advanced EMT... Show more

The NREMT exam asks questions on these topics:

- Airway, Respiration & Ventilation
- Cardiology & Resuscitation
- Trauma
- Medical/Obstetrics/Gynecology
- EMS Operations

All sections, except EMS Operations, have a content distribution of 85% adult and 15% pediatrics [based questions]. 

Topic weightage: For the EMT exam, 18%-22% of questions asked will cover airway, respiration, and ventilation; 20%-24% will cover cardiology and resuscitation; 14%-18% will cover trauma; 27%-31% will cover medical/obstetrics/gynecology; and 10%-14% will cover EMS operations. 
For the EMR, advanced EMT and paramedic exams, the numbers differ only by 1%-2% in each category. 

Note: The NREMT exam bases questions off of the National EMS Education Standards, current accepted practices of EMS, and Current AHA Guidelines for CPS and ECC (Emergency Cardiovascular Care). 

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