How The N-200 Works - Nellcor N-200 User Manual

How the N-200 Works
Your patient's doctor has decided to place your patient on adevice called a pulse
oximeter. This device uses a technique called pulse oximetry to measure the amount of
oxygen in the blood continuously.
Pulse oximetryrequires three parts: anoxygen transducer (called a pulse sensor in this
manual), a patientmodule, and an oximeter (called a monitor in this manual). Refer to
Figure 1.
Pulse Sensor
Patient
Module
I
I H ) ^
Monitor
a
w
SB
US
Figure 1: The pulse sensor, patient module, and monitor are the three parts of
a pulse oximetry system. ECG equipment is optional.
The plastic reusable sensor gently sandwiches an area of the body that has a lot of blood
flow near the surface. Reusable plastic sensors may be used on a finger or an adulfs toe.
Disposable adhesivesensors may be used on the bridge of the nose, a toe, or abab/s
foot.