Table 2.
Analysis of oxygen saturation measured by a transmittance pulse oximeter probe placed on the tongue or by a reflectance pulse oximeter probe positioned on the tail or tibia in anesthetized dogs that had or had not received dexmedetomidine.
| n | SpO2 m (%) (min-max%) | SpO2 m (%) (min-max%) | P-value | |
|---|---|---|---|---|
| Tongue vs. tail | Tongue | Tail | ||
| BUT | 132 | 96 (90–100) | 100 (89–100) | <0.0001 |
| DEX | 100 | 97 (87–100) | 99 (67–100) | <0.0001 |
| Tongue vs. tibia | Tongue | Tibia | ||
| BUT | 92 | 96 (77–100) | 100 (93–100) | <0.0001 |
| DEX | 69 | 96.5 (82–100) | 98.5 (70–100) | 0.3366 |
| Tail vs. tibia | Tail | Tibia | ||
| BUT | 85 | 100 (93–100) | 100 (74–100) | 0.2003 |
| DEX | 49 | 97 (70–100) | 99 (78–100) | 0.0046 |
Values were only included if measurements for both positions were available and analyzed as paired values.
n, number of measurements; tongue, transmittance pulse oximeter probe placed on the tongue; tail, reflectance pulse oximeter probe placed on the ventral tail base; tibia, transmittance pulse oximeter probe placed on the medial aspect of the proximal tibia; SpO2, oxygen saturation measured by pulse oximeter; BUT, premedication butorphanol 0.2 mg/kg IV; DEX, premedication dexmedetomidine 5 μg/kg + butorphanol 0.2 mg/kg IV; m, median. Bold values mean significant differences.