non flow limiting hypopnea u201d the algorithm proceeds to step 434 and checks whether the apnea trigger timer is still greater than 0 if the apnea trigger timer is greater than 0 the algorithm proceeds to step 435 and checks whether the apnea response state nr equals 3 if nr equals 3 the algorithm proceeds to set a pause timer tp the pause timer tp will be active in the next apnea response state the pause timer tp sets the duration of the pause and in the example tp is set to 5 minutes the algorithm then proceeds to step 437 if nr did not equal 3 at step 435 the algorithm would proceed directly to step 437 at step 437 the algorithm increments the apnea response state nr and then proceeds to step 438 and resets the apnea trigger timer to the preset apnea trigger time for example 2 5 minutes the algorithm then proceeds from step 438 to step 495 if the algorithm determined at step 434 that the apnea trigger time had expired tc is equal to or less than 0 the algorithm proceeds to step 439 and 440 if the algorithm determines at step 439 that event equals u201c apnea u201d the algorithm resets event to none at step 440 then or otherwise the algorithm proceeds to step 438 and resets the trigger timer tc to the predetermined trigger time the effect of steps 439 to 440 is to ensure that the pressure adjusting algorithm does not increment the set pressure in response to the apnea that was found not to have occurred within the apnea trigger time the effect of bypassing steps 435 to 437 where.