The accuracy of pulse oximetry can be significantly reduced by all of the following, except

NEET PG Anaesthesia
#1

The accuracy of pulse oximetry can be significantly reduced by all of the following, except

  1. Intravenous bolus of methylene blue

2) Intravenous bolus of heparin

  1. Severe acidosis

  2. Low blood flow

solution

The accuracy of pulse oximetry can be affected by many factors. These include but are not limited to low blood flow conditions, patient movement, ambient light, dysfunctional hemoglobin molecules, dyes such as methylene blue and indigo carmine, and altered relationships in the hemoglobin dissociation curve (severe acidosis). Intravenous heparin bolus is not known to distort the accuracy of pulse oximetry.