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An accurate semiautomated oscillometric blood pressure device for use in pregnancy (including pre-eclampsia) in a low-income and middle-income country population: the Microlife 3AS1-2

Nathan, Hannah L.; de Greeff, Annemarie; Hezelgrave, Natasha L.; Chappell, Lucy C.; Shennan, Andrew H.

doi: 10.1097/MBP.0000000000000086
Devices and Technology

Objectives To assess the accuracy of the Microlife 3AS1-2 blood pressure device in pregnancy and pre-eclampsia in a low-resource setting.

Methods Prospective validation according to the British Hypertension Society protocol. A total of 45 pregnant women were recruited from Kimberley Hospital (South Africa), of whom 15 had pre-eclampsia.

Results The Microlife 3AS1-2 device achieved an overall B/A grade in pregnancy (including pre-eclampsia), passing the British Hypertension Society protocol requirements and achieving the International Organization for Standardization standard with a mean difference and SD of −3.8±7.3 and −1.5±6.2 mmHg for systolic and diastolic pressures, respectively.

Conclusion The Microlife 3AS1-2 device can be recommended for use in pregnancy, including pre-eclampsia. In addition, it fulfils the requirements stipulated by the WHO for an automated blood pressure device suitable for use in a low-resource setting. This makes it the ideal device for antenatal clinics and primary healthcare facilities in low-income and middle-income countries.

Women’s Health Academic Centre, King’s College London, London, UK

Correspondence to Hannah L. Nathan, MBBS, BSc, DFSRH, Women’s Health Academic Centre, King’s College London, 10th floor, North Wing, St Thomas’ Hospital, London SE1 7EH, UK Tel: + 20 7188 4138; fax: + 20 7620 1227; e-mail:

Received March 27, 2014

Received in revised form August 13, 2014

Accepted August 19, 2014

Copyright © 2015 Wolters Kluwer Health, Inc. All rights reserved.