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IJCS

Editorial

The Accuracy of Blood Pressure Measurement

The act of measuring a patient’s blood pressure with a stethoscope and a sphygmomanometer is among the most important because of the various clinical implications that may occur. Failure to detect elevated blood pressure levels may expose a patient to the risk of various complications such as stroke, heart failure, kidney failure, and premature atherosclerosis. Conversely, obtaining falsely elevated measures may lead to diagnostic investigations and use of costly and life-threatening drugs. The concern with the proper calibration and validation of blood pressure measurement devices is constant and fundamental for clinical practice. Turner et al., in a detailed computational study, demonstrated that the error resulting from the decalibrated sphygmomanometer accounts for 20% to 28% of cases of undetected systolic and diastolic hypertension and 15% and 31% of cases of falsely diagnosed systolic and diastolic hypertension, respectively.

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Artigo Original

Evaluation of accuracy of rastreometer: a new equipment for hypertension tracking

Fernando Bitencourt et al. Carlos Antonio Mascia Gottschall

Background: Hypertension is one of the major cardiovascular risk factors affecting more than one billion people. The low awareness of the disease is one of the greatest difficulties related to hypertension. The population screening for hypertension is widely recognized as an effective strategy to detect new cases, but until now, there is no instrument that has become feasible for mass screening of the population. Objective: Evaluate the accuracy and reproducibility of the Rastreometer, a new instrument for the screening of hypertension for community health agents. Methods: Cross-sectional study with a sample of 436 individuals served by the Family Health Strategy. The evaluation was conducted comparing the results of blood pressure obtained by the oscillometric method and reading of the Rastreometer performed by community health agents. Results: The Rastreometer presented a sensitivity of 81.3% and a specificity of 85.6% when assessed in relation to the values of systolic pressure. The operators’ performance influenced the results of the Rastreometer independently (p = 0.0001). The Rastreometer showed substantial reproducibility (Kendall’s W 0.71). Conclusion: The Rastreometer, when operated by community health agents, showed good sensitivity, specificity and reproducibility, especially when evaluated with the values of systolic pressure, tending to confirm this new instrument as a method of screening for hypertension in primary health care.

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Artigo Original

Accuracy of the Omron HEM-705 CP for blood pressure measurement in large epidemiologic studies

Lina M. Vera-Cala et al. Myriam Orostegui Laura I. Valencia-Angel Nahyr López Leonelo E. Bautista

BACKGROUND: Accurate measurement of blood pressure is of utmost importance in hypertension research. In the context of epidemiologic and clinical studies, oscillometric devices offer important advantages to overcome some of the limitations of the auscultatory method. Even though their accuracy has been evaluated in multiple studies in the clinical setting, there is little evidence of their performance in large epidemiologic studies. OBJECTIVE: We evaluated the accuracy of the Omron HEM-705-CP, an automatic device for blood pressure (BP) measurement, as compared to the standard auscultatory method with a mercury sphygmomanometer in a large cohort study. METHODS: We made three auscultatory measurements, followed by two measurements with the Omron device in 1,084 subjects. Bias was estimated as the average of the two Omron minus the average of the last two auscultatory measurements, with its corresponding 95% limits of agreement (LA). RESULTS: The Omron overestimated systolic blood pressure (SBP) by 1.8 mmHg (LA:-10.1, 13.7) and underestimated diastolic blood pressure (DBP) by 1.6 mmHg (LA:-12.3, 9.2). Bias was significantly larger in men. Bias in SBP increased with age and decreased with BP level, while bias in DBP decreased with age and increased with BP level. The sensitivity and specificity of the Omron to detect hypertension were 88.2% and 98.6%, respectively. Minimum bias in the estimates of the effects of several factors resulted from the use of Omron measurements. CONCLUSION: Our results showed that the Omron HEM-705-CP could be used for measuring BP in large epidemiology studies without compromising study validity or precision.

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The Accuracy of Blood Pressure Measurement

Evaluation of accuracy of rastreometer: a new equipment for hypertension tracking

Accuracy of the Omron HEM-705 CP for blood pressure measurement in large epidemiologic studies

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Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)

Electronic Document Format (Vancouver)

Electronic Document Format (ABNT)

Electronic Document Format (APA)

Electronic Document Format (ISO)