Harshfield G A, Treiber F A, Davis H, Johnson M, Slavens G A, Thompson W
Department of Pediatrics, Medical College of Georgia, Augusta, Georgia 30912-3710, USA.
Blood Press Monit. 1999 Apr;4(2):87-90.
The use of ambulatory blood pressure monitoring for pediatric populations is increasing.
; To determine the 2-year stability of ambulatory blood pressure in youths.
We evaluated 2-year stabilities of resting and ambulatory blood pressures in 197 youths (aged 13.9+/-2.3 years at initial evaluation). Readings were taken every 20 min during the daytime (0800-2200 h) and every 30 min at night (0000-0600 h).
Daytime and night-time systolic blood pressure increased (P < 0.01 for both) as did resting systolic blood pressure (P < 0.05). Measures of diastolic blood pressure did not change. Changes in systolic blood pressure were related to changes in body size. Estimates of stability for resting and ambulatory measurements were similar, ranging from 0.65 to 0.75. In addition, correlation coefficients for relationships between first and second readings for resting and ambulatory measurements were similar ranging from 0.43 and for resting heart rate to 0.72 for 24h systolic blood pressure (P < 0. 001 for each). The only significant correlation between change scores for resting and ambulatory values was that between resting and night-time diastolic blood pressures (r = 0.33, P < 0.001).
Measures of blood pressure derived from ambulatory blood pressure monitoring reflect changes in blood pressure in youths at least as well as do changes in resting blood pressure despite the high degree of variability in levels of physical activity and affective states of the children during the ambulatory recordings.
动态血压监测在儿科人群中的应用正在增加。
确定青少年动态血压的2年稳定性。
我们评估了197名青少年（初次评估时年龄为13.9±2.3岁）静息血压和动态血压的2年稳定性。白天（08:00-22:00）每20分钟测量一次，夜间（00:00-06:00）每30分钟测量一次。
白天和夜间收缩压均升高（两者P<0.01），静息收缩压也升高（P<0.05）。舒张压测量值没有变化。收缩压的变化与体型变化有关。静息和动态测量的稳定性估计值相似，范围为0.65至0.75。此外，静息和动态测量的第一次和第二次读数之间关系的相关系数相似，从静息心率的0.43到24小时收缩压的0.72不等（每项P<0.001）。静息值和动态值变化分数之间唯一显著的相关性是静息舒张压和夜间舒张压之间的相关性（r=0.33，P<0.001）。
尽管在动态记录期间儿童的身体活动水平和情感状态存在高度变异性，但动态血压监测得出的血压测量值至少与静息血压变化一样能反映青少年血压的变化。
