Accuracy and precision of buccal pulse oximetry

摘要: Abstract Objective We sought to describe the accuracy and precision of buccal pulse oximetry (SbpO2) compared with arterial oxygen saturation (SaO2) (SpO2) in healthy adults at normoxemia under 3 induced hypoxemic conditions. Methods In this prospective, correlational study, SbpO2, SaO2, SpO2 values were recorded three conditions (SpO2 = 90%, 80%, 70%) for 53 healthy, nonsmoking who without cardiac or pulmonary disease, baseline hypoxemia, peripheral edema, dyshemoglobinemia, fever. Bland-Altman analyses used assess agreement between SbpO2 SaO2 measures measures. Data adjusted account a lag time finger sites. Results When comparing values, mean differences –1.8%, .3%, 2.4%, 2.6% evident normoxemia, 90%, 70% levels, respectively. –1.4%, .1%, 3.3%, 4.7% The met priori criteria (1.6%; 95% confidence limit, –4.9% 1.3%) normoxemia. (1.5%; –4.4% 1.5%) 90% (1.9%; –3.6% 3.8%) conditions, but exceeded other tested On average, lagged 21 seconds behind SbpO2. Conclusion Buccal is an inaccurate imprecise method assessing when