A friend collapses,as she regains consciousness had a stroke.
Unresponsive people's muscles relax, and their tongues may close their airways, making it impossible for them to breathe. By moving the tongue forward, tilting their head back widens their airway. Their chest and stomach won't move if they aren't breathing, and you won't be able to hear or feel their breaths.
Give two indications of severe, potentially fatal external bleeding. Blood gushing or pouring from the wound; bleeding that continues despite application of pressure.
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