Correlation of Blood Hemoglobin Values with Non-Invasive Co-Oximetry Measurement of SpHb in Dogs Undergoing Elective Ovariohysterectomy
María Fernanda Espinosa-Morales,
Agatha Elisa Miranda-Cortés,
Daniel Mota-Rojas,
Alejandro Casas-Alvarado,
Alejandro Jiménez-Yedra,
Alicia Pamela Pérez-Sánchez,
Ismael Hernández-Ávalos
Affiliations
María Fernanda Espinosa-Morales
Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de Mexico (UNAM), Cuautitlán 54714, Mexico
Agatha Elisa Miranda-Cortés
Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de Mexico (UNAM), Cuautitlán 54714, Mexico
Daniel Mota-Rojas
Neurophysiology of Pain, Behavior and Animal Welfare Assessment, Department of Agricultural and Animal Production (DAAP), Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City 04960, Mexico
Alejandro Casas-Alvarado
Neurophysiology of Pain, Behavior and Animal Welfare Assessment, Department of Agricultural and Animal Production (DAAP), Universidad Autónoma Metropolitana (UAM), Xochimilco Campus, Mexico City 04960, Mexico
Alejandro Jiménez-Yedra
Department of Anesthesiology in Dogs and Cats, Specialty Veterinary Hospital, Facultad de Medicina Veterinaria y Zootecnia (FMVZ), UNAM, Mexico City 04510, Mexico
Alicia Pamela Pérez-Sánchez
Veterinary Hospital for Dogs and Cats, Specialty in Medicine and Surgery in Dogs and Cats, Facultad de Medicina Veterinaria y Zootecnia (FMVZ), Universidad Popular Autónoma del Estado de Puebla (UPAEP), Puebla 72410, Mexico
Ismael Hernández-Ávalos
Clinical Pharmacology and Veterinary Anesthesia, Biological Sciences Department, Facultad de Estudios Superiores Cuautitlán, Universidad Nacional Autónoma de Mexico (UNAM), Cuautitlán 54714, Mexico
Cardiovascular function monitoring has been suggested as a key parameter to determine patient stability during the anesthetic process. However, the use of pulse co-oximetry has been suggested as a technology to complement the monitoring of this system as a direct way to assess hemoglobin (Hb) blood concentration. Therefore, this study aimed to correlate and determine the measurement bias between Hb blood levels with continuously determined blood hemoglobin concentration (SpHb) and arterial oxygen content values (SpOC), both obtained by noninvasive co-oximetry in dogs undergoing elective ovariohysterectomy (OVH). A total of 85 clinically healthy bitches of different breeds that were admitted for elective OVH surgery were evaluated. These animals underwent SpHb and SpOC capture after the in vivo setting for the duration of the surgical procedure. Likewise, five minutes before the end of the surgical procedure, a blood sample was obtained directly from the jugular vein to determine the blood concentration of Hb (HbLAB). The Bland–Altman analysis showed 95% limits of agreement from −4.22 to 4.99 g/dL with a BIAS (mean difference) of 0.384 ± 2.35 g/dL (r = 0.401). SpHb recordings were correlated with oxygen saturation (SpO2) (r = 0.995), SpOC (r = 0.992) and with perfusion index (PI) (r = 0.418). Therefore, SpHb presents a moderate positive correlation with direct blood concentration of Hb. This possibly shows that continuous measurement of SpHb by noninvasive co-oximetry is a reliable and advanced alternative for monitoring Hb concentration in dogs under anesthesia.
