Chest injuries can be penetrating (if the injuring object penetrates the body cavity) and non-penetrating (if such an object does not penetrate the body cavity). Usually they are accompanied by a large loss of blood, bruises of the lungs, heart and other organs of the chest. As a result of this, severe respiratory and cardiac disturbances occur. Penetrating wounds are generally life threatening.
Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.