Abstract：
OBJECTIVE: To compare the accuracy of doppler ultrasound (DOP) and pulse oximeter plethysmography (POP) in the measurement of systolic arterial pressure (SAP) to invasive blood pressure (IBP) in anesthetized dogs.
METHODS: 40 client-owned healthy dogs > 10 kg.
METHODS: Dogs were anesthetized for surgical procedures in dorsal recumbency. Invasive blood pressure was measured from a dorsal pedal artery. DOP and POP device probes were placed over the median caudal artery with a flow-occluding cuff for noninvasive blood pressure measurement. Systolic arterial pressure measured by DOP, loss of pulse oximeter plethysmograph (POPL), and return of pulse oximeter plethysmograph (POPR) were compared to SAP measured by IBP. A linear mixed model was used to determine correlation. Bland-Altman analyses were performed to determine bias, SD, and limits of agreement. The accuracy of DOP and POP was compared to IBP across different tensive states.
RESULTS: Conditional R2 values for DOP, POPL, and POPR versus IBP were 0.92, 0.85, and 0.87, respectively (all P < .001). The biases for DOP, POPL, and POPR compared to IBP were +7.6 ± 13.1, +3.9 ± 14.4, and +8.6 ± 15.2 mm Hg (bias ± SD), respectively. Limits of agreement (lower, upper) were (-18.1, +33.3), (-24.3, +32.1), and (-21.2, +38.4) mm Hg for DOP, POPL, and POPR, respectively. DOP and POP overestimated SAP during hypotension (SAP < 90 mm Hg), DOP to a lesser magnitude.
CONCLUSIONS: DOP measured from the median caudal artery may be acceptable for SAP measurement in dorsally recumbent, healthy anesthetized dogs > 10 kg. POP was determined an unacceptable method.
METHODS: 40 client-owned healthy dogs > 10 kg.
METHODS: Dogs were anesthetized for surgical procedures in dorsal recumbency. Invasive blood pressure was measured from a dorsal pedal artery. DOP and POP device probes were placed over the median caudal artery with a flow-occluding cuff for noninvasive blood pressure measurement. Systolic arterial pressure measured by DOP, loss of pulse oximeter plethysmograph (POPL), and return of pulse oximeter plethysmograph (POPR) were compared to SAP measured by IBP. A linear mixed model was used to determine correlation. Bland-Altman analyses were performed to determine bias, SD, and limits of agreement. The accuracy of DOP and POP was compared to IBP across different tensive states.
RESULTS: Conditional R2 values for DOP, POPL, and POPR versus IBP were 0.92, 0.85, and 0.87, respectively (all P < .001). The biases for DOP, POPL, and POPR compared to IBP were +7.6 ± 13.1, +3.9 ± 14.4, and +8.6 ± 15.2 mm Hg (bias ± SD), respectively. Limits of agreement (lower, upper) were (-18.1, +33.3), (-24.3, +32.1), and (-21.2, +38.4) mm Hg for DOP, POPL, and POPR, respectively. DOP and POP overestimated SAP during hypotension (SAP < 90 mm Hg), DOP to a lesser magnitude.
CONCLUSIONS: DOP measured from the median caudal artery may be acceptable for SAP measurement in dorsally recumbent, healthy anesthetized dogs > 10 kg. POP was determined an unacceptable method.
摘要：
目的：比较多普勒超声（DOP）和脉搏血氧仪体积描记术（POP）测量麻醉犬收缩期动脉压（SAP）到有创血压（IBP）的准确性。
方法：40只客户拥有的健康狗>10公斤。
方法：对狗进行背侧卧位的手术麻醉。从足背动脉测量有创血压。将DOP和POP装置探头放置在带有流量阻塞袖带的中位尾动脉上，以进行无创血压测量。通过DOP测量收缩压，脉搏血氧仪丢失体积描记器(POPL)，将脉搏血氧定量仪（POPR）的返回与IBP测量的SAP进行比较。使用线性混合模型来确定相关性。进行Bland-Altman分析以确定偏倚，SD,和协议的限制。在不同密集状态下，将DOP和POP的准确性与IBP进行了比较。
结果：DOP的条件R2值，POPL,POPR和IBP分别为0.92、0.85和0.87（均P<.001）。DOP的偏见，POPL,与IBP相比，POPR为7.6±13.1，3.9±14.4和8.6±15.2mmHg（偏差±SD），分别。协议限制(较低，上)是(-18.1，+33.3)，(-24.3,+32.1),DOP为（-21.2，+38.4）mmHg，POPL,和POPR,分别。DOP和POP在低血压期间高估了SAP（SAP<90mmHg），DOP的幅度较小。
结论：从尾中动脉测量的DOP对于背卧的SAP测量可能是可接受的，健康的麻醉狗>10公斤。POP被确定为不可接受的方法。
方法：40只客户拥有的健康狗>10公斤。
方法：对狗进行背侧卧位的手术麻醉。从足背动脉测量有创血压。将DOP和POP装置探头放置在带有流量阻塞袖带的中位尾动脉上，以进行无创血压测量。通过DOP测量收缩压，脉搏血氧仪丢失体积描记器(POPL)，将脉搏血氧定量仪（POPR）的返回与IBP测量的SAP进行比较。使用线性混合模型来确定相关性。进行Bland-Altman分析以确定偏倚，SD,和协议的限制。在不同密集状态下，将DOP和POP的准确性与IBP进行了比较。
结果：DOP的条件R2值，POPL,POPR和IBP分别为0.92、0.85和0.87（均P<.001）。DOP的偏见，POPL,与IBP相比，POPR为7.6±13.1，3.9±14.4和8.6±15.2mmHg（偏差±SD），分别。协议限制(较低，上)是(-18.1，+33.3)，(-24.3,+32.1),DOP为（-21.2，+38.4）mmHg，POPL,和POPR,分别。DOP和POP在低血压期间高估了SAP（SAP<90mmHg），DOP的幅度较小。
结论：从尾中动脉测量的DOP对于背卧的SAP测量可能是可接受的，健康的麻醉狗>10公斤。POP被确定为不可接受的方法。
