CPR is a life-saving technique used when a person's heartbeat or breathing stops.
CPR involves chest compressions and rescue breaths to maintain blood flow to the brain until medical help arrives.

This situation / emergency may be medical, natural, or accidental.

ALS stands for Advanced Life Support.
BLS stands for Basic Life Support.
Basic Life Support (BLS) is performed by First Responders.

Rheumatoid Factor (RA Factor) is a substance (antibody) in the blood found in many patients.

Bradycardia is a medical term for a slow heart rate, specifically when the heart beats less than 60 times per minute in adults.
Normal heart beat in adult is 60-100 beats per minute.
Symptoms of Bradycardia are Dizziness, Fainting, Fatigue and Shortness of breath.
Opposite of Bradycardia is Tachycardia.

Cystitis is Inflammation of the urinary bladder.
Most cases of cystitis are caused by bacteria, usually E. coli, and this infection of the bladder is called a urinary tract infection (UTI).

Burns cause tissue damage, which increases the body’s metabolic and healing demands.
Proteins are essential for repairing damaged tissues, wound healing and maintaining immune system.
The vitamin A and vitamin C are most important for wound healing.

Percussion is a physical examination technique, not part of history taking.