Background: Indirect blood pressure measurements are often used to guide clinical decisions, but few studies have verified their agreement with direct arterial blood pressure in nonhuman primates. Here, the accuracy and precision of Doppler (DOP) and oscillometric (OS) [systolic (OSsys), mean (OSmean), and diastolic (OSdias)] blood pressure readings were assessed in rhesus macaques.
Methods: DOP and OS were utilized to measure blood pressure values in nine anesthetized rhesus macaques, which were compared to direct measurements via a saphenous arterial catheter. All measurements were taken simultaneously every 5 min for 60-240 min.
Results: DOP and OSsys underestimated direct systolic arterial pressure with a bias ± precision of 10.21 ± 6.37 mmHg and 11.67 ± 11.55 mmHg, respectively. OSmean correlated well with direct mean arterial pressure with a bias ± precision of 7.25 ± 7.35 mmHg.
Conclusions: DOP provided the better representation of systolic blood pressure, and OSmean provided a useful representation of mean arterial pressure in anesthetized rhesus macaques.
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