Mallinckrodt NPB-190 Manuale dell'Operatore Scaricare il pdf (Pagina 37)

Start-Up and Use

During that data evaluation period:

• If the patient is not moving (for example, because of cardiac

arrest, shock, paralysis, anesthesia) and has no qualified

pulse for 6 seconds, a high-priority alarm immediately

sounds, the Pulse Search Indicator flashes, and the data

displays flash zeroes.

• If the patient is constantly moving, the NPB-295 searches for

qualified pulses for up to 50 seconds. Each time a qualified

pulse is detected, even during motion, the data displays are

updated.

The NPB-295 returns to normal operation as soon as it

detects one of the following: three consecutive qualified

pulses (when there is no motion), five consecutive qualified

pulses (when there is motion), or a total of 10 qualified

pulses. Otherwise, at the end of the data evaluation period,

the data displays flash zeroes and, if motion is still present, a

low-priority alarm sounds; if there is no motion, a high-

priority alarm sounds.

If, during the 50-second data evaluation period, motion stops

and no qualified pulse is found for 6 seconds, a high-priority

alarm sounds immediately.

NPB-295 alarm management can therefore be considered a three-

tier system:

• Normal Monitoring mode, during which qualified pulses are

being detected and the data display is routinely updated.

• Pulse Search mode, during which the Pulse Search Indicator

lights, the data display alternates between data and dashes,

and the data evaluation period is ongoing. The data display

is updated when a qualified pulse is detected.

• Loss-of-pulse mode, during which an alarm sounds, the Pulse

Search Indicator flashes, and the data displays flash zeroes.

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Mallinckrodt NPB-190 Manuale dell'Operatore Pagina 37