Regardless of {TAIL ~ the positioning} of the alarm means utilized for alerting {HEAD ~ the patient}, the alarm means 44 issues a continuous alarm stimulus that is adjustable in intensity, and is either directly or indirectly issued by an alarm unit positioned to alert the patient to awaken and to reapply the mask 18 that has been disrupted from a proper seal against the patients face 
Regardless of { TAIL ~ the positioning } of the alarm means utilized for alerting { HEAD ~ the patient } , the alarm means 44 issues a continuous alarm stimulus that is adjustable in intensity , and is either directly or indirectly issued by an alarm unit positioned to alert the patient to awaken and to reapply the mask 18 that has been disrupted from a proper seal against the patients face
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