<Li> Breathing, if possible, is labored, producing gasping or wheezing . </Li> <Li> The person has a violent and largely involuntary cough, gurgle, or vomiting noise, though more serious choking victims will have a limited (if any) ability to produce these symptoms since they require at least some air movement . </Li> <Li> The person desperately clutches his or her throat or mouth, or attempts to induce vomiting by putting their fingers down their throat . </Li> <Li> If breathing is not restored, the person's face turns blue (cyanosis) from lack of oxygen . </Li>

When does lethal brain damage start to occur in a choking victim