Low J A, Panagiotopoulos C, Smith J T, Tang W, Derrick E J
Department of Obstetrics and Gynaecology, Queen's University, Kingston, Ontario.
Clin Invest Med. 1995 Jun;18(3):163-7.
The objective of this study was to determine the validity of oscillometric blood pressure in relation to arterial blood pressure. Thirty-one newborns were studied. Clinical characteristics, complications, and treatment interventions were documented. Arterial pressure (every 2 sec) and oscillometric pressure (every 3 min) were concurrently recorded for 1-2 h. Serial observations of oscillometric pressure followed the trend of arterial pressure in the individual newborn. However, the study averaged oscillometric pressures were lower than the arterial pressures: systolic, by 1 mmHg; mean, by 5.3 mmHg (p < 0.0001); and diastolic, by 4.6 mmHg (p < 0.0001). The variance of individual, 15-min averaged, and 1-h averaged observations of oscillometric pressure in relation to arterial pressure was examined. Variance for individual observations may be large. The least variance of oscillometric pressure was in the 1-h averaged mean pressure, in which the difference was +/- 2 mmHg in 77% and +/- 4 mmHg in 95% of observations. Clinical characteristics, with the exception of birth weight and treatment interventions, did not affect the variance of oscillometric pressure. This study implies that the offset in relation to arterial pressure should be established for each oscillometric pressure monitoring system. Hourly averaged mean oscillometric pressure is satisfactory for many newborn assessments and management circumstances. However, arterial pressure may be necessary to accurately document transient hypertension or hypotension or an unstable blood pressure.
本研究的目的是确定示波血压与动脉血压之间的相关性。研究对象为31名新生儿。记录临床特征、并发症及治疗干预措施。同时记录动脉压（每2秒一次）和示波血压（每3分钟一次），持续1 - 2小时。示波血压的系列观察结果与单个新生儿的动脉压趋势一致。然而，研究中示波血压的平均值低于动脉压：收缩压低1 mmHg；平均压低5.3 mmHg（p < 0.0001）；舒张压低4.6 mmHg（p < 0.0001）。研究了示波血压的个体观察值、15分钟平均值和1小时平均值相对于动脉压的方差。个体观察值的方差可能较大。示波血压方差最小的是1小时平均平均压，其中77%的观察值差异为±2 mmHg，95%的观察值差异为±4 mmHg。除出生体重和治疗干预措施外，临床特征不影响示波血压的方差。本研究表明，应针对每个示波血压监测系统确定相对于动脉压的偏移量。对于许多新生儿评估和管理情况，每小时平均示波平均压是令人满意的。然而，对于准确记录短暂性高血压或低血压或不稳定血压，可能需要测量动脉压。
