More About Blood Pressure Measurements
WHO Blood Pressure Classifications
Standards for assessment of high or low blood pressure, without
regard to age, have been established
by
the World Health Organiza-
tion (WHO), as shown in this chart.
mmHg
9 5
90
cl
Systolic Blood Pressure
Reference Material Investigation into Adult Diseases
Report by the Ministry of Health and Social
Security 1971.
Variations in Blood Pressure
Individual blood pressures vary greatly both on a daily and a seasonal
basis. These variations are even more pronounced in hypertense pa-
tients. Normally the blood pressure rises while at work and is at its
lowest during the sleeping period. The graph below illustrates the
variations in blood pressure over a whole day with measurement
taken every five minutes.
160
140
120
100
80
60
40
20
PM
Time
AM
Shown is data for measurement taken every 5 minutes The thick line represents sleep.
The
rises in blood pressure
at 4 PM (A in We graph) and 12 PM (B in the graph) correspond to an at-
tack Of pain and sexual intercourse (Beven, Honour & Stott: Clin. Sci. 36:329.
Summary of Contents for 7621
Page 1: ...Model 7621 Instruction Manual 1 ...
Page 4: ...Identification of Parts ...