Accuracy of monitors used for blood pressure checks in English retail pharmacies: a cross-sectional observational study

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Accuracy of monitors used for blood pressure checks in English retail pharmacies: a cross-sectional observational study. / Hodgkinson, James; Koshiaris, Constantinos; Martin, Una; Mant, Jonathan; Heneghan, Carl; Hobbs, FD Richard; McManus, Richard.

In: British Journal of General Practice , Vol. 66, No. 646, 01.05.2016, p. e309-e314.

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@article{a8b665154bb9427da1cef0f981b24eed,
title = "Accuracy of monitors used for blood pressure checks in English retail pharmacies:: a cross-sectional observational study",
abstract = "BackgroundFree blood pressure (BP) checks offered by community pharmacies offer a potentially useful opportunity to diagnose and/or manage hypertension, but the accuracy of the sphygmomanometers in use is currently unknown.AimTo assess the accuracy of validated automatic BP monitors used for BP checks in a UK retail pharmacy chain.Design and Setting52 pharmacies from one chain were visited in a range of locations (inner city, suburban, rural) in central England. MethodMonitor accuracy was compared to a calibrated reference device (Omron PA-350), at 50 mmHg intervals across the range 0-300 mmHg (static pressure test), with a difference from the reference monitor of +/-3 mmHg at any interval considered a failure. The results were analysed by usage rates and length of time in service.ResultsEight (13%) monitors failed (i.e. were more than 3mmHg from reference), all underestimating BP. Monitor failure rate from the reference monitor of +/- 3 mmHg at any testing interval varied by length of time in use (2/38, 5% before 18 months vs. 4/14, 29% after 18 months; p=0.038) and to some extent but non-significantly by usage rates (4/22, 18% in monitors used more than once daily vs. 2/33, 6% in those used less frequently; p=0.204).ConclusionBP monitors within a pharmacy setting fail at similar rates to those in general practice. Annual calibration checks for blood pressure monitors are needed, even for new monitors, since these data indicate declining performance from 18 months onwards.",
keywords = "blood pressure monitors , calibration , community pharmacy services , hypertension , primary health care",
author = "James Hodgkinson and Constantinos Koshiaris and Una Martin and Jonathan Mant and Carl Heneghan and Hobbs, {FD Richard} and Richard McManus",
note = "After a 12 month embargo period the full content can be made publicly available",
year = "2016",
month = may,
day = "1",
doi = "10.3399/bjgp16X684769",
language = "English",
volume = "66",
pages = "e309--e314",
journal = "British Journal of General Practice ",
issn = "0960-1643",
publisher = "Royal College of General Practitioners",
number = "646",

}

RIS

TY - JOUR

T1 - Accuracy of monitors used for blood pressure checks in English retail pharmacies:

T2 - a cross-sectional observational study

AU - Hodgkinson, James

AU - Koshiaris, Constantinos

AU - Martin, Una

AU - Mant, Jonathan

AU - Heneghan, Carl

AU - Hobbs, FD Richard

AU - McManus, Richard

N1 - After a 12 month embargo period the full content can be made publicly available

PY - 2016/5/1

Y1 - 2016/5/1

N2 - BackgroundFree blood pressure (BP) checks offered by community pharmacies offer a potentially useful opportunity to diagnose and/or manage hypertension, but the accuracy of the sphygmomanometers in use is currently unknown.AimTo assess the accuracy of validated automatic BP monitors used for BP checks in a UK retail pharmacy chain.Design and Setting52 pharmacies from one chain were visited in a range of locations (inner city, suburban, rural) in central England. MethodMonitor accuracy was compared to a calibrated reference device (Omron PA-350), at 50 mmHg intervals across the range 0-300 mmHg (static pressure test), with a difference from the reference monitor of +/-3 mmHg at any interval considered a failure. The results were analysed by usage rates and length of time in service.ResultsEight (13%) monitors failed (i.e. were more than 3mmHg from reference), all underestimating BP. Monitor failure rate from the reference monitor of +/- 3 mmHg at any testing interval varied by length of time in use (2/38, 5% before 18 months vs. 4/14, 29% after 18 months; p=0.038) and to some extent but non-significantly by usage rates (4/22, 18% in monitors used more than once daily vs. 2/33, 6% in those used less frequently; p=0.204).ConclusionBP monitors within a pharmacy setting fail at similar rates to those in general practice. Annual calibration checks for blood pressure monitors are needed, even for new monitors, since these data indicate declining performance from 18 months onwards.

AB - BackgroundFree blood pressure (BP) checks offered by community pharmacies offer a potentially useful opportunity to diagnose and/or manage hypertension, but the accuracy of the sphygmomanometers in use is currently unknown.AimTo assess the accuracy of validated automatic BP monitors used for BP checks in a UK retail pharmacy chain.Design and Setting52 pharmacies from one chain were visited in a range of locations (inner city, suburban, rural) in central England. MethodMonitor accuracy was compared to a calibrated reference device (Omron PA-350), at 50 mmHg intervals across the range 0-300 mmHg (static pressure test), with a difference from the reference monitor of +/-3 mmHg at any interval considered a failure. The results were analysed by usage rates and length of time in service.ResultsEight (13%) monitors failed (i.e. were more than 3mmHg from reference), all underestimating BP. Monitor failure rate from the reference monitor of +/- 3 mmHg at any testing interval varied by length of time in use (2/38, 5% before 18 months vs. 4/14, 29% after 18 months; p=0.038) and to some extent but non-significantly by usage rates (4/22, 18% in monitors used more than once daily vs. 2/33, 6% in those used less frequently; p=0.204).ConclusionBP monitors within a pharmacy setting fail at similar rates to those in general practice. Annual calibration checks for blood pressure monitors are needed, even for new monitors, since these data indicate declining performance from 18 months onwards.

KW - blood pressure monitors

KW - calibration

KW - community pharmacy services

KW - hypertension

KW - primary health care

U2 - 10.3399/bjgp16X684769

DO - 10.3399/bjgp16X684769

M3 - Article

VL - 66

SP - e309-e314

JO - British Journal of General Practice

JF - British Journal of General Practice

SN - 0960-1643

IS - 646

ER -