Table 3.
Bland-Altman analysis of the pulse oximetry values displayed by a transmittance probe placed on the tongue and a reflectance probe placed on the base of the tail in anesthetized dogs.
| Tongue vs. tail | All | BUT | DEX | |||
|---|---|---|---|---|---|---|
| BIAS | 95% LoA | BIAS | 95% LoA | BIAS | 95% LoA | |
| SpO2 (%) | −2.2 ± 3.8 | −9.7–5.2 | −3.1 ± 2.6 | −8.3–2.0 | 1.0 ± 4.7 | −8.2–10.2 |
| PR (/min) | −0.1 ± 3.2 | −6.1–6.1 | −0.3 ± 2.4 | −5.0–4.5 | 0.0 ± 4.0 | −7.8–7.8 |
| Tongue vs. tibia | ||||||
| SpO2 (%) | −0.6 ± 7.2 | −14.8–13.6 | −2.0 ± 6.8 | −15.5–11.4 | 1.6 ± 7.3 | −12.8–16.0 |
| PR (/min) | −0.2 ± 2.7 | −5.2–5.5 | −0.1 ± 2.9 | −5.7–5.5 | 0.5 ± 2.4 | −4.3–5.3 |
| Tail vs. tibia | ||||||
| SpO2 (%) | −2.2 ± 6.9 | −11.4–15.7 | −0.8 ± 4.5 | −8.1–9.8 | 4.4 ± 9.4 | −14.0–22.8 |
| PR (/min) | −3.7 ± 10.8 | −24.8–17.5 | −3.3 ± 10.3 | −23.5–16.8 | 4.2 ± 11.7 | −27.1–18.7 |
All, all dogs; BUT, dogs premedicated with butorphanol 0.2 mg/kg IV; DEX, dogs premedicated with dexmedetomidine 5 μg/kg IV and butorphanol 0.2 mg/kg IV; 95% LoA, 95% limits of agreement; SpO2, oxygen saturation measured by pulse oximetry; PR, pulse rate measured by pulse oximetry; SQ, signal quality measured by pulse oximetry; PI, perfusion index measured by pulse oximetry.