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J Appl Physiol 82: 698-703, 1997;
8750-7587/97 $5.00
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Journal of Applied Physiology
Vol. 82, No. 2, pp. 698-703, February 1997
SYSTEMIC CIRCULATION AND FLUID BALANCE

special communication

Performance of the AM-5600 blood pressure monitor: comparison with ambulatory intra-arterial pressure

Stefano Omboni1, Gianfranco Parati1, Antonella Groppelli1, Luisa Ulian2, and Giuseppe Mancia2

1 Istituto Scientifico Ospedale S. Luca, Centro Auxologico Italiano, 20149 Milan; 2 Cattedra di Medicina Interna, Ospedale S. Gerardo, Monza, Universitá degli Studi di Milano, and Centro di Fisiologia Clinica e Ipertensione, Ospedale Maggiore di Milano, 20122 Milan, Italy

Received 29 March 1996; accepted in final form 26 September 1996.

Omboni, Stefano, Gianfranco Parati, Antonella Groppelli, Luisa Ulian, and Giuseppe Mancia. Performance of the AM-5600 blood pressure monitor: comparison with ambulatory intra-arterial pressure. J. Appl. Physiol. 82(2): 698-703, 1997.---The AM-5600 is a new device that simultaneously monitors electrocardiogram (ECG) and noninvasive blood pressure (BP) over a 24-h period. BP readings (Korotkoff sounds and cuff air pressure) are stored into the recorder, allowing the removal of BP artifacts after a visual check. In 12 subjects with essential hypertension, we compared BP values simultaneously provided by the AM-5600 and intra-arterial recordings. At rest, noninvasive systolic BP (SBP) values were lower (5.4 ± 4.9 mmHg) and diastolic BP (DBP) values were higher (7.3 ± 7.3 mmHg) than were intra-arterial values. In ambulatory conditions (9 subjects), between-method discrepancies were +0.8 ± 6.1 and +12.2 ± 7.4 mmHg for 24-h SBP and DBP, respectively. AM-5600 underestimated 24-h intra-arterial SBP and DBP SD, but it accurately tracked intra-arterial SBP and DBP changes. Editing removed 22.1% of total readings, slightly reducing between-method discrepancies. Thus the AM-5600 provides an accurate average estimate of resting and ambulatory SBP and, for DBP, a less accurate estimate that is slightly improved by editing. The AM-5600 allows accurate description of SBP and DBP profiles and thus may be suitable to describe the abrupt BP changes accompanying a number of clinical events.

24-hour ambulatory blood pressure monitoring; noninvasive blood pressure measurement; intra-arterial blood pressure measurement

0161-7567/97 $5.00 Copyright © 1997 the American Physiological Society




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