BACKGROUND: Accurate blood pressure measurement is fundamental for scientific investigation or clinical decision-making. In this sense, it is important to verify the values provided by electronic devices. OBJECTIVE: To validate the Omron HEM 742 blood pressure monitoring device in adolescents according to criteria suggested by the British Hypertension Society. METHODS: A total of 150 adolescents aged between 10 and 16 years participated in the study. The automated Omron HEM 742 monitor was connected in Y to the mercury column auscultatory device, then three simultaneous measurements were taken, and the differences between the readings of the two devices were calculated. The intraclass correlation coefficient and Bland-Altman plot (agreement) were used to verify the relationship between both devices. Specificity and sensitivity of the device were determined by using the ROC curve. RESULTS: The comparison between the measurements showed an equal to or lower than 5mmHg difference in 67.3% of the systolic values, and 69.3% of the diastolic values; an equal to or lower than 10mmHg difference occurred in 87.3% and 90.6% of the systolic and diastolic values, respectively; an equal to or lower than 15mmHg difference was found in 96.6% of the systolic values and 97.3% of the diastolic values. These findings are consistent with a grade A according to the British Hypertension Society protocol. A marked consonance was observed between the values obtained by the automated monitor and this device was proven to be capable of identifying the presence or absence of high blood pressure. CONCLUSION: The Omron HEM 742 monitor was proved valid for blood pressure measurement in adolescents according to the criteria suggested by the British Hypertension Society.
BACKGROUND: Accurate blood pressure measurement is fundamental for scientific investigation or clinical decision-making. In this sense, it is important to verify the values provided by electronic devices. OBJECTIVE: To validate the Omron HEM 742 blood pressure monitoring device in adolescents according to criteria suggested by the British Hypertension Society. METHODS: A total of 150 adolescents aged between 10 and 16 years participated in the study. The automated Omron HEM 742 monitor was connected in Y to the mercury column auscultatory device, then three simultaneous measurements were taken, and the differences between the readings of the two devices were calculated. The intraclass correlation coefficient and Bland-Altman plot (agreement) were used to verify the relationship between both devices. Specificity and sensitivity of the device were determined by using the ROC curve. RESULTS: The comparison between the measurements showed an equal to or lower than 5mmHg difference in 67.3% of the systolic values, and 69.3% of the diastolic values; an equal to or lower than 10mmHg difference occurred in 87.3% and 90.6% of the systolic and diastolic values, respectively; an equal to or lower than 15mmHg difference was found in 96.6% of the systolic values and 97.3% of the diastolic values. These findings are consistent with a grade A according to the British Hypertension Society protocol. A marked consonance was observed between the values obtained by the automated monitor and this device was proven to be capable of identifying the presence or absence of high blood pressure. CONCLUSION: The Omron HEM 742 monitor was proved valid for blood pressure measurement in adolescents according to the criteria suggested by the British Hypertension Society.
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