Performance of the am 5600 blood pressure monitor: comparison with
ambulatory intra-arterial pressure.
Omboni, Stefano, Gianfranco Parati, Antonella Groppelli, Luisa Ulian,
Giuseppe Mancia.
Istituto Scientifico Ospedale S. Luca, Centro Auxologico Italiano,
Milano; Cattedra di Medicina Interna, Ospedale S.Gerardo, Monza,
Universit degli Studi di Milano and Centro di Fisiologia Clinica e
Ipertensione, Ospedale Maggiore di Milano, Milano, Italy
APStracts 3:0467A, 1996.
The AM5600 is a new device which simultaneously monitors ECG and non
-invasive blood pressure (BP) over the 24h. BP readings (Korotkoff
sounds and cuff air pressure) are stored into the recorder, allowing
to remove BP artifacts after visual check. In 12 essential
hypertensives we compared BP values simultaneously provided by the
AM5600 and intra-arterial recordings. At rest non-invasive systolic
(S) BP values were lower (5.4 4.9 mmHg) and diastolic (D) BP values
higher (7.3 7.3 mmHg) than intra-arterial ones. In ambulatory
conditions (9 subjects) between-method discrepancies were +0.8 6.1
mmHg and +12.2 7.4 mmHg for 24h SBP and DBP respectively. AM5600
underestimated 24h intra-arterial SBP and DBP standard deviations,
but it accurately tracked intra-arterial SBP and DBP changes. Editing
removed 22.1% of total readings, slightly reducing between-method
discrepancies. Thus the AM5600 provides an accurate average estimate
of resting and ambulatory SBP and a less accurate estimate of DBP,
which is slightly improved by editing. The AM5600 allows to
accurately describe SBP and DBP profiles and thus may be suitable to
describe the abrupt BP changes accompanying a number of clinical
events.
Received 29 March 1996; accepted in final form 26 September 1996.
APS Manuscript Number A307-6.
Article publication pending Journal of Applied Physiology.
ISSN 1080-4757 Copyright 1996 The American Physiological Society.
Published in APStracts on 5 November 1996