neo 4 Flashcards
ratio of oxyhemoglobin to total concentration of hemoglobin present in blood ; measures percentage off hemoglobin binding sites in the bloodstream occupied by oxygen
oxygen saturation
O2 saturation in arterial blood through ABG analysis ; more accurate
arterial oxygen saturation (SaO2)
estimation of O2 saturation level measured by a pulse oximeter ; less accurate
saturation of peripheral oxygen (SpO20
measurement of blood saturation using spectrophotometry
oximetry
every substance has a unique pattern of light absorption
spectrophotometry
pattern of light absorption of a substance varies predictably with amount present by measuring light absorbed and transmitted by a substance
Lambert-Beer Law
particular pattern of light absorption exhibited by a substance at different wavelengths
absorption spectrum
noninvasive method of measuring oxyhemoglobin saturation
pulse oxmetry
portable noninvasive monitoring device that provides estimates of arterial blood oxyhemoglobin saturation levels
pulse oximeter
uses light to detect the tiny volume changes that occur in living tissue during pulsatile blood flow
spectrophotometry
940 nm
red and infrared
normal SpO2
equal or greater than 95%
patient with cardiac problems
equal or greater than 80%
measurement of PO2 and PCO2 through the skin by means of miniature clark (PO2) and Severinghause (PCO2) via double-sided adhesive disk
transcutaneous blood gas monitoring
means of continuous ventilatory assessment ; measured by heating underlying skin 44 degree Celsius which facilitates CO2 diffusion across skin to CO2 electrode
PtcCO2 monitoring