ZOLL X Series Monitor Defibrillator Rev H - Manual (Page 136)

C HAPTER 10 P ULSE CO-O XIMETRY (S P O2, SPCO, AND S P M ET )
10-2 www.zoll.com 9650-001355-01 Rev. H
Warnings -- SpO
2
, General
• SpO
2
style pulse oximeter measurements may be affected by numerous factors such as
bright lights, improperly applied probes, use of non-ZOLL approved sensors, patient
conditions/movements. The clinician should use good clinical judgment when
interpreting SpO
2
measurements. Should the clinician question an SpO
2
measurement, an arterial blood gas oxygen saturation measurement should be
obtained.
• Interfering substances: Carboxyhemoglobin and methemoglobin can erroneously alter
SpO
2
readings. The level of change is approximately equal to the amount of
carboxyhemoglobin or methemoglobin present. Dyes or any substance containing dyes
that alter arterial pigmentation might cause erroneous readings.
• Do not use the X Series pulse oximeter or oximeter sensors during magnetic resonance
imaging (MRI). Induced current could cause burns. The pulse oximeter might affect
the MRI image and the MRI unit might interfere with the accuracy of oximetry
measurements.
• Carefully arrange patient cabling to reduce the possibility of patient entanglement or
strangulation.
• Inaccurate measurements may be caused by venous pulsations.
• The pulse oximeter can be used during defibrillation, but the readings may be
inaccurate for a short time.
• Pulse rate measurement is based on the optical detection of a peripheral flow pulse and
therefore may not detect certain arrhythmias. The pulse oximeter should not be used
as a replacement or substitute for ECG based arrhythmia analysis.
• Severe anemia may cause erroneous SpO
2
readings.
• If using pulse CO-oximetry during full body irradiation, keep the sensor out of the
irradiation field. If the sensor is exposed to the irradiation, the reading might be
inaccurate or the unit might read zero for the duration of the active irradiation period.
• Elevated levels of Total Bilirubin may lead to inaccurate SpO
2
, SpMet, SpCO
measurements.
• Very low arterial Oxygen Saturation (SpO
2
) levels may cause inaccurate SpCO and
SpMet measurements.
• Loss of pulse signal can occur when:
- The sensor is too tight.
- The patient has hypotension, severe vasoconstriction, severe anemia, or
hypothermia.
- There is arterial occlusion proximal to the sensor.
- The patient is in cardiac arrest or is in shock.
• The pulsations from intra-aortic balloon support can be additive to the pulse rate on
the oximeter pulse rate display. Verify patient's pulse rate against the ECG heart rate.