Even if you can't speak or make a sound, it is important to call 911. Dispatchers will send help to any call, whether or not you can state what is happening. The chance of brain damage from lack of oxygen increases exponentially after about six minutes without breathing, so urgency is important. Even if you can help yourself before emergency services arrive, the Heimlich and coughing can cause internal injuries. A brief visit to the hospital can rule out any other injuries.

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