不同年龄段老年高血压病患者动态血压及血压昼夜节律的变化特征

目的探讨不同年龄段老年高血压病患者动态血压及血压昼夜节律的变化特征。 方法将346例老年高血压患者，按年龄段分为A组(60～69岁，n＝77)、B组(70～79岁，n＝109)和C组(≥80岁，n＝160)，分析3组患者动态血压参数、动态血压昼夜节律异常发生率。 结果A组、B组24 h平均舒张压(24 h DBP)A组(74.85±11.11)mmHg，B组(71.88±10.52) mmHg]均高于C组(68.80±9.06) mmHg] (1 mmHg＝0.133 kPa)(F＝9.95，P<0.05)；A组、B组、C组的血压昼夜节律异常率分别为76.63%、87.16%和90.63%，差异有统计学意义(χ²＝8.79，P<0.05)；血压昼夜节律异常率C组高于A组，差异有统计学意义(χ²＝8.50，P<0.05)。 结论老年高血压患者随着年龄的增大，24 hDBP降低；老年高血压患者血压昼夜节律异常，多数表现为非杓型和反杓型，老年高血压患者血压昼夜节律随增龄变化昼夜节律异常率增高。

Characteristics of the ambulatory blood pressure and abnormal of diurnal rhythm of blood pressure in elderly with hypertension at the stage of different ages

ObjectiveTo investigate the characteristic of the ambulatory blood pressure and diurnal rhythm of blood pressure in elderly with hypertension at the stage of different ages. MethodsThree hundred and forty-six patients were divided into three groups according to their ages: group A(aged from 60 to 69 years, n=77), group B(aged from 70 to 79 years, n=109), group C(age≥80 years, n=160). The parameters and incidence of abnormal blood pressure on diurnal rhythm were analyzed in all the patients. ResultsTwenty-four-hour average diastolic pressure (24 h DBP) was higher in the group A (74.85±11.11)mmHg] and group B (71.88±10.52)mmHg] than that in group C (68.80±9.06)mmHg] (1 mmHg=0.133 kPa) (F=9.95, P<0.05). The rates of abnormal of diurnal rhythm of blood pressure were 76.63% (group A), 87.16%(group B), 90.63%(group C) respectively, and the difference was statistically significant (χ²=8.79, P<0.05), which was remarkable different between group A and group C (χ²=8.50, P<0.05). Conclusions24 h DBP decreases in elderly with hypertension with age increasing.Non-dipper and reverse dipper blood pressure are more commonly symptoms with abnormal of diurnal rhythm of blood pressure in elderly with hypertension.Abnormal rate of decreases diurnal rhythm of blood pressure is variational along with age.