Innokas Yhtyma Oy VC150 Benutzerhandbuch
9-8
VC150 Vital Signs Monitor
KO00065K
Nellcor SpO
2
: Description
If patient activity presents a problem, try one or more of the following remedies
to correct the problem.
to correct the problem.
•
Verify the sensor is properly and securely applied.
•
Move the sensor to a less active site.
•
Use an adhesive sensor that improves patient skin contact.
•
Use a new sensor with fresh adhesive backing.
•
Keep the patient quiet and still, if possible.
Patient Conditions
Application issues and certain patient conditions can affect the measurements
of the monitoring system and cause the loss of the pulse signal.
of the monitoring system and cause the loss of the pulse signal.
•
Anemia — Anemia causes decreased arterial oxygen content.
Although SpO
Although SpO
2
readings may appear normal, an anemic patient
may be hypoxic. Correcting anemia can improve arterial oxygen
content. The pulse oximeter may fail to provide an SpO
content. The pulse oximeter may fail to provide an SpO
2
reading if
hemoglobin levels fall below 5 gm/dl.
•
Dysfunctional hemoglobins — Dysfunctional hemoglobins such as
carboxyhemoglobin, methemoglobin, and sulphemoglobin are
unable to carry oxygen. SpO
carboxyhemoglobin, methemoglobin, and sulphemoglobin are
unable to carry oxygen. SpO
2
readings may appear normal;
however, a patient may be hypoxic because less hemoglobin is
available to carry oxygen. Further assessment beyond pulse
oximetry is recommended.
available to carry oxygen. Further assessment beyond pulse
oximetry is recommended.
•
Additional possible patient conditions may also influence
measurements.
– Poor peripheral perfusion
measurements.
– Poor peripheral perfusion
– Excessive patient activity
– Venous pulsations
– Dark skin pigment
– Intravascular dyes, such as indocyanine green or methylene blue
– Externally applied coloring agents (nail polish, dye, pigmented
cream)
cream)
– Defibrillation
– Excessive patient talking
– Respiration rate outside the range of 4 to 40 breaths per minute
– Significantly irregular cardiac rhythms (three or more events of
irregularity observed within 30 seconds)
irregularity observed within 30 seconds)