The purpose of this study was to determine the level of agreement between invasive and noninvasive blood pressure measurements in anesthetized, non-surgically manipulated Dorset cross-bred lambs.

Twelve healthy female Dorset cross-bred lambs, weighing 37.3 ± 7.4 kg (mean ± SD) underwent isoflurane anesthesia for simultaneous measurement of systolic arterial pressure (SAP), mean arterial pressure (MAP) and diastolic arterial pressure (DAP) from an invasive blood pressure source and a noninvasive oscillometric source (O-NIBP). The femoral artery was catheterized for invasive blood pressure measurements, while noninvasive blood pressure was measured from a cuff placed on the antebrachium. The Bland-Altman method was used to calculate agreement between SAP, MAP and DAP measurements.

The bias ± SD between SAP, MAP and DAP measurements was 3.6 ± 12.0, 4.9 ± 9.1 mmHg and 4.1 ± 8.0, respectively. The 95% limits of agreement for SAP, MAP and DAP were − 19.9 to 27.1, −13.0 to 22.8 mmHg, and − 11.7 to 19.9, respectively.

Overall, agreement was poor between femoral IBP and O-NIBP monitoring techniques in anesthetized Dorset cross-bred lambs, with O-NIBP underestimating the femoral IBP. Arterial blood pressure should be most accurately measured using an invasive blood pressure monitoring technique in lambs undergoing isoflurane anesthesia.

这项研究的目的是确定麻醉的，非手术操作的多塞特杂交羔羊的有创血压测量与无创血压测量之间的一致性水平。

十二只健康的多塞特雌性杂交羔羊（重37.3±7.4千克（平均±标准差））接受异氟烷麻醉，同时测量有创血液的收缩压（SAP），平均动脉压（MAP）和舒张动脉压（DAP）。压力源和无创示波源（O-NIBP）。股动脉插入导管进行有创血压测量，而无创血压则通过放置在前臂上的袖带进行测量。Bland-Altman方法用于计算SAP，MAP和DAP测量之间的一致性。

SAP，MAP和DAP测量之间的偏差±SD分别为3.6±12.0、4.9±9.1 mmHg和4.1±8.0。SAP，MAP和DAP的95％协议限制分别为-19.9至27.1，-13.0至22.8 mmHg和-11.7至19.9。

总体而言，麻醉的多塞特杂交羔羊股IBP和O-NIBP监测技术之间的一致性差，O-NIBP低估了股IBP。在接受异氟烷麻醉的羔羊中，应使用侵入性血压监测技术最准确地测量动脉血压。