Hypertension, Vol 7, 597-601, Copyright © 1985 by American Heart Association
G Parati, G Pomidossi, R Casadei and G Mancia
Intermittent noninvasive blood pressure monitoring is becoming increasingly
popular because of the belief that a daytime blood pressure profile can
provide a better clinical evaluation of hypertension than that provided by
casual blood pressure measurements. This approach has potential
limitations, however, one of which is that the cuff inflations permitting
blood pressure to be repeatedly measured may induce an alerting reaction
and a pressor response in the patients and lead to an overestimation of
their daytime blood pressure. Blood pressure in 22 subjects was invasively
recorded for 24 hours by the Oxford method. During the day of the recording
blood pressure was also measured by a noninvasive device (Vita-Stat 901),
which had its cuff applied to the opposite arm from which the
intra-arterial signal was derived. For 2 hours the device provided
automatic cuff inflations at 10-minutes intervals. For another 2 hours it
was programmed to provide cuff inflations only following patients'
commands, also at 10-minute intervals. Analysis of the intra-arterial blood
pressure trace during the periods preceding and following the automatically
or semiautomatically induced cuff inflations showed that these procedures
caused no increment in systolic and diastolic blood pressure. This finding
applied not only to the mean data but also to each individual measurement
considered separately, including the initial one. Our results indicate that
automatic and semiautomatic blood pressure monitorings do not induce an
alarm reaction and a blood pressure rise and thus do not overestimate
daytime blood pressure values.
ARTICLES
Lack of alerting reactions to intermittent cuff inflations during noninvasive blood pressure monitoring
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