Key result
Inflationary oscillometry (OMRON-MIT) achieved an A/A accuracy grade in pregnancy and preeclampsia (mean systolic difference -1.3 mmHg), while the OMRON-M7 achieved a B/B grade in preeclampsia.
Why the study?
Are the OMRON-MIT and OMRON-M7 devices accurate for measuring blood pressure in pregnant women and those with preeclampsia compared to mercury sphygmomanometry?
Cross-Sectional (n=45)
No
Are the OMRON-MIT and OMRON-M7 devices accurate for measuring blood pressure in pregnant women and those with preeclampsia compared to mercury sphygmomanometry?
Both OMRON-MIT and OMRON-M7 are recommended for use in pregnancy, but inflationary oscillometry (OMRON-MIT) is more accurate in preeclampsia.
Answers are grounded in this paper and cite their sources.
May support OMRON-MIT preference in preeclampsia; leaves open prospective validation against outcomes.
OBJECTIVE: To assess the accuracy of the OMRON-MIT (inflationary) and OMRON-M7 (deflationary) devices for measuring blood pressure in a pregnant population, including women with preeclampsia, according to the British Hypertension Society protocol. METHODS: Forty-five pregnant women, including 15 with preeclampsia, were recruited at a large teaching hospital. Nine sequential same arm measurements were taken from each patient alternating between the test device and mercury sphygmomanometry. Both devices were assessed in the same women. Data were analysed according to the British Hypertension Society protocol. RESULTS: The OMRON-MIT achieved an A/A grade in both pregnancy and preeclampsia with an overall mean difference (SD) of -1.3 (5.6) mmHg and 0.4 (5.6) mmHg for systolic and diastolic pressures, respectively. The OMRON-M7 achieved an A/A grade in pregnancy and a B/B grade in preeclampsia with an overall mean difference (SD) of -5.3 (6.6) mmHg and -3.5 (6.9) mmHg. CONCLUSION: Both the OMRON-MIT and the OMRON-M7 can be recommended for use in pregnancy and preeclampsia. Inflationary oscillometry (OMRON-MIT) was more accurate in preeclampsia.
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Greeff et al. (2009) conducted a cross-sectional in Pregnancy and preeclampsia (n=45). OMRON-MIT (inflationary) and OMRON-M7 (deflationary) devices vs. Mercury sphygmomanometry was evaluated on Accuracy of blood pressure measurement according to the British Hypertension Society protocol. Inflationary oscillometry (OMRON-MIT) achieved an A/A accuracy grade in pregnancy and preeclampsia (mean systolic difference -1.3 mmHg), while the OMRON-M7 achieved a B/B grade in preeclampsia.
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