Mallinckrodt NPB-190 Manuel de l'opérateur télécharger pdf (Page 48)

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-290 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-290 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-290 alarm management can therefore be considered

a three-tier system:

• Normal 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 Manuel de l'opérateur Page 48