If there is no sign of trauma to the head or neck, or other reason to suspect cervical spine injury, place the patient on their left side, knees slightly flexed to help maintain the position. By placing the patient on their side, the tongue is less likely to occlude the airway and blood or secretions can drain freely.
If there is a possibility of cervical spine injury, the head and neck must be held in an in-line neutral position by one person while a second individual helps turn the patient onto their side. The person maintaining c-spine must assure the head and neck remain in line with the rest of the body as it is being turned and then must continue holding the head in a neutral position until the patient can be placed onto their back, and properly immobilized with a cervical collar, cervical immobilization device and long spine board.
The best position depends on other issues the victim has.
If the victim is conscious and suffering from a shortness of breath, it will be much easier to sit him/her upright.
If suffering a CVA, it would be best to lie him/her down at a 15 degree angle.
And then there are the different cases in between.
Flat, on their back, on a level surface.
In the recovery position
An unconscious victim should only be moved if their life is threatened by remaining there - this is a rule called 'Life Over Limb'.
yes
CPR should start once the casualty is deemed unconscious and not breathing and should only stop once you are physically exhausted of administering, or once further help has arrived in the form of paramedics and taken over.
CPR should be performed if a person is unconscious and not breathing
The Recovery Position, or Lateral Recombant. Care should be taken when placing the patient in this position that no spinal injuries are suspected, and that the airway is open. Also check the modified Haines position, which creates less torsion on the spine. See links.
Yes, after ensuring the patient is breathing and their airway and mouth is clear of obstructions (such as dentures), then the patient should be turned on their side and placed in the recovery position.
back with knees flexed
On his or her back with his or her knees flexed
check to see if there a sleep then breathing and if they have a heart beat
The rescuer kneels astride the victim's thighs and places his fists between the bottom of the victim's breastbone and the navel. The rescuer then executes a series of 6-10 sharp compressions by pushing inward and upward
You should contact 911 if you have not already. Also check for a pulse, if there is not one present begin CPR.