The signs/symptoms are in the question itself... the person is apneic and has no pulse.
An infant in need of CPR will be unconscious, not breathing and have no pulse.
Symptoms of those requiring CPR are no breathing, no pulse, no signs of life.
If they are unconscious and breathing, nothing will happen. If they are unconscious and not breathing, they will die.
Blood pressure drop, breathing difficult
To determine if someone is unconscious or simply sleeping, you can try to wake them up by calling their name or gently shaking them. If they do not respond, check for other signs of consciousness such as breathing, pulse, and eye movements. If there are no signs of consciousness, they may be unconscious and in need of medical attention.
coughing, trouble breathing, back of the throut swells and lose of breath
signs and symptoms of lung cancer are breathing hard and coughing up blood, not being able to finish sentences, short of breath all the time and weak in general.
Confusion and problems breathing are some symptoms of septic shock. Weakness, patches of discolored skin and chills are some other symptoms to look out for.
The first Angina symptoms are pain and discomfort. The other symptoms are burning, squeezing, pressure or tightness in the chest area, nausea, breathing difficulties and sweating.
CREST syndrome is actually a collection of symptoms, not one or two that stand out. Signs can include exhaustion, weakness, difficulty breathing and dizziness.
So you don't stop breathing even when you are asleep or unconscious.