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CES Medicina Veterinaria y Zootecnia

versão On-line ISSN 1900-9607

Resumo

RAMIREZ USCATEGUI, Ricardo Andres et al. Comparison of blood pressure measured by oscillometric or invasive methods in sheep and goats. Ces. Med. Vet. Zootec. [online]. 2022, vol.17, n.1, pp.47-57.  Epub 20-Set-2022. ISSN 1900-9607.  https://doi.org/10.21615/cesmvz.6811.

Blood pressure is an indispensable parameter in anesthetic monitoring. The measurement of invasive artery pressure (IBP) using peripheral arterial catheterization is reliable but requires experience and can lead to complications. The oscillometric technique is non-invasive (NIBP), it only requires a cuff over a peripheral artery and the measurement is automated. However, the accuracy of PANI has been little explored and, for this reason, this study aimed to compare this technique with PAI in sheep and goats. 20 sheep and 20 goats needed laparoscopy were used under general anesthesia. Once in anesthetic plane, the caudal auricular artery was catheterized and connected to an electronic pressure transducer, coupled to a multiparameter monitor to measure IBP, systolic (S), diastolic (D) and mean (M). At the same time, an appropriately sized cuff was placed over radial artery and connected to the same monitor. Every 5 minutes, blood pressures were recorded by both methods, subsequently compared by the Student test, correlated by Pearson and agreement assessed by the Bland-Altman. In sheep, DBP was similar and correlated between NIBP and IBP (P=0.69; r=0.65; bias 0.7 ± 13.1 mmHg), whereas SBP and MBP were overestimated by NIBP. In goats, MAP was similar and correlated between NIBP and IBP (P=0.566; r=0.57; bias 2.4 ± 20.2 mmHg), while SBP was overestimated and DBP underestimated. It is concluded that, in sheep only DBP and in goats, MBP, measured by the oscillometric method, are accurate, feasible and reliable alternatives for anesthetic monitoring of blood pressure.

Palavras-chave : anesthesia; monitoring; laparoscopy; small ruminants.

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