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Journal of Human Hypertension Feb 2023Automated 'oscillometric' blood pressure (BP) measuring devices (BPMDs) were developed in the 1970s to replace manual auscultatory BP measurement by mercury... (Review)
Review
Automated 'oscillometric' blood pressure (BP) measuring devices (BPMDs) were developed in the 1970s to replace manual auscultatory BP measurement by mercury sphygmomanometer. Automated BPMDs that have passed accuracy testing versus a reference auscultatory sphygmomanometer using a scientifically accepted validation protocol are recommended for clinical use globally. Currently, there are many thousands of unique automated BPMDs manufactured by hundreds of companies, with each device using proprietary algorithms to estimate BP and using a method of operation that is largely unchanged since inception. Validated automated BPMDs provide similar BP values to those recorded using manual auscultation albeit with potential sources of error mostly associated with using empirical algorithms to derive BP from waveform pulsations. Much of the work to derive contemporary BP thresholds and treatment targets used to manage cardiovascular disease risk was obtained using automated BPMDs. While there is room for future refinement to improve accuracy for better individual risk stratification, validated BPMDs remain the recommended standard for office and out-of-office BP measurement to be used in hypertension diagnosis and management worldwide.
Topics: Humans; Blood Pressure; Blood Pressure Determination; Hypertension; Sphygmomanometers; Oscillometry
PubMed: 35637256
DOI: 10.1038/s41371-022-00693-x -
Brazilian Journal of Physical Therapy 2015Handgrip strength is currently considered a predictor of overall muscle strength and functional capacity. Therefore, it is important to find reliable and affordable... (Comparative Study)
Comparative Study
BACKGROUND
Handgrip strength is currently considered a predictor of overall muscle strength and functional capacity. Therefore, it is important to find reliable and affordable instruments for this analysis, such as the modified sphygmomanometer test (MST).
OBJECTIVES
To assess the concurrent criterion validity of the MST, to compare the MST with the Jamar dynamometer, and to analyze the reproducibility (i.e. reliability and agreement) of the MST in individuals with Parkinson's disease (PD).
METHOD
The authors recruited 50 subjects, 24 with PD (65.5 ± 6.2 years of age) and 26 healthy elderly subjects (63.4 ± 7.2 years of age). The handgrip strength was measured using the Jamar dynamometer and modified sphygmomanometer. The concurrent criterion validity was analyzed using Pearson's correlation coefficient and a simple linear regression test. The reproducibility of the MST was evaluated with the coefficient of intra-class correlation (ICC(2,1)), the standard error of measurement (SEM), the minimal detectable change (MDC), and the Bland-Altman plot. For all of the analyses, α ≤ 0.05 was considered a risk.
RESULTS
There was a significant correlation of moderate magnitude (r ≥ 0.45) between the MST and the Jamar dynamometer. The MST had excellent reliability (ICC(2,1) ≥ 0.7). The SEM and the MDC were adequate; however, the Bland-Altman plot indicated an unsatisfactory interrater agreement.
CONCLUSIONS
The MST exhibited adequate validity and excellent reliability and is, therefore, suitable for monitoring the handgrip strength in PD. However, if the goal is to compare the measurements between examiners, the authors recommend that the data be interpreted with caution.
Topics: Aged; Equipment Design; Female; Hand Strength; Humans; Male; Middle Aged; Parkinson Disease; Reproducibility of Results; Sphygmomanometers
PubMed: 25993627
DOI: 10.1590/bjpt-rbf.2014.0081 -
American Journal of Hypertension May 2023The Ideal Life Blood Pressure Manager measures blood pressure (BP) and automatically transmits results to the patient's medical record independent of internet access,...
BACKGROUND
The Ideal Life Blood Pressure Manager measures blood pressure (BP) and automatically transmits results to the patient's medical record independent of internet access, but has not been validated. Our objective was to conduct a validation study of the Ideal Life BP Manager in pregnant women using a validation protocol.
METHODS
Pregnant participants were enrolled into three subgroups per the Association for the Advancement of Medical Instrumentation/European Society of Hypertension/International Organization for Standardization protocol: normotensive (systolic blood pressure (SBP) < 140 and diastolic blood pressure (DBP) < 90), hypertensive without proteinuria (SBP ≥ 140 or DBP ≥ 90), and preeclampsia (SBP ≥ 140 or DBP ≥ 90 with proteinuria). Two trained research staff used a mercury sphygmomanometer to validate the device, alternating sphygmomanometer, and device readings for a total of 9 measurements.
RESULTS
Among 51 participants, the mean SBP and DBP differences and standard deviations between the device and the mean staff measurements for all participants were 1.7 ± 7.1 and 1.5 ± 7.0 mm Hg, respectively. The standard deviations of the individual participant's paired device and mean staff SBP and DBP measurements were 6.0 and 6.4 mm Hg, respectively. The device was more likely to overestimate rather than underestimate BP (SBP: mean difference = 1.67, 95% CI [-12.15 to 15.49]; DBP: mean difference = 1.51, 95% CI [-12.26 to 15.28]). Most paired readings had a difference of less than 10 mm Hg across averaged paired readings.
CONCLUSION
The Ideal Life BP Manager met internationally recognized validity criteria in this sample of pregnant women.
Topics: Humans; Female; Pregnancy; Blood Pressure; Blood Pressure Determination; Sphygmomanometers; Hypertension; Pre-Eclampsia
PubMed: 36810671
DOI: 10.1093/ajh/hpad004 -
Journal of Clinical Hypertension... Mar 2020In China, automated blood pressure monitors have been readily available for home use. Home blood pressure monitoring has been indispensable in the management of... (Review)
Review
In China, automated blood pressure monitors have been readily available for home use. Home blood pressure monitoring has been indispensable in the management of hypertension. There is therefore a need to establish guidelines for home blood pressure monitoring on the basis of the 2012 consensus document. In this guidelines document, the committee put forward recommendations on the selection and calibration of blood pressure measuring devices, the frequency (times) and duration (days) of blood pressure measurement, and the diagnostic threshold of home blood pressure.
Topics: Blood Pressure; Blood Pressure Determination; Blood Pressure Monitoring, Ambulatory; China; Humans; Hypertension; Sphygmomanometers
PubMed: 31891454
DOI: 10.1111/jch.13779 -
Anesthesiology Jan 1995
Topics: Adult; Blood Pressure Monitors; Cesarean Section; Equipment Failure; Female; Humans; Hypotension; Intraoperative Period; Male; Pregnancy; Spouses
PubMed: 7832330
DOI: 10.1097/00000542-199501000-00056 -
Clinical Cardiology Jul 1991Ambulatory blood pressure monitoring provides a more reliable estimate of blood pressure and its diurnal variability than casual blood pressure measurement. However, the... (Review)
Review
Ambulatory blood pressure monitoring provides a more reliable estimate of blood pressure and its diurnal variability than casual blood pressure measurement. However, the data supporting the link between cardiovascular risk and blood pressure are based almost entirely on casual, or office-based, blood pressure readings, and this form of measurement continues to be the primary factor in clinical decision making. In recent years, compelling evidence from research centers around the world has shown that ambulatory blood pressure measurements correlate more closely with the target organ complications of hypertension and predictions of future cardiovascular events than either casual office or home blood pressure measurements. Improvements in the technology have resulted in ambulatory blood pressure monitors that are increasingly accurate and unobtrusive. As evidence supporting its use continues to mount, the role of ambulatory blood pressure monitoring in clinical medicine can be expected to increase significantly.
Topics: Blood Pressure; Blood Pressure Determination; Blood Pressure Monitors; Circadian Rhythm; Humans; Hypertension; Office Visits
PubMed: 1747964
DOI: No ID Found -
Clinical and Experimental Hypertension... Dec 2024The objective was to utilize a smartwatch sphygmomanometer to predict new-onset hypertension within a short-term follow-up among individuals with high-normal blood...
OBJECTIVES
The objective was to utilize a smartwatch sphygmomanometer to predict new-onset hypertension within a short-term follow-up among individuals with high-normal blood pressure (HNBP).
METHODS
This study consisted of 3180 participants in the training set and 1000 participants in the validation set. Participants underwent both ambulatory blood pressure monitoring (ABPM) and home blood pressure monitoring (HBPM) using a smartwatch sphygmomanometer. Multivariable Cox regressions were used to analyze cumulative events. A nomogram was constructed to predict new-onset hypertension. Discrimination and calibration were assessed using the C-index and calibration curve, respectively.
RESULTS
Among the 3180 individuals with HNBP in the training set, 693 (21.8%) developed new-onset hypertension within a 6-month period. The nomogram for predicting new-onset hypertension had a C-index of 0.854 (95% CI, 0.843-0.867). The calibration curve demonstrated good agreement between the nomogram's predicted probabilities and actual observations for short-term new-onset hypertension. In the validate dataset, during the 6-month follow-up, the nomogram had a good C-index of 0.917 (95% CI, 0.904-0.930) and a good calibration curve. As the score increased, the risk of new-onset hypertension significantly increased, with an HR of 8.415 (95% CI: 5.153-13.744, = .000) for the middle-score vs. low-score groups and 86.824 (95% CI: 55.071-136.885, = .000) for the high-score vs. low-score group.
CONCLUSIONS
This study provides evidence for the use of smartwatch sphygmomanometer to monitor blood pressure in individuals at high risk of developing new-onset hypertension in the near future.
TRIAL REGISTRATION
ChiCTR2200057354.
Topics: Humans; Blood Pressure; Cohort Studies; Blood Pressure Monitoring, Ambulatory; Hypertension; Sphygmomanometers; Nomograms
PubMed: 38346228
DOI: 10.1080/10641963.2024.2304023 -
Hypertension Research : Official... Jun 2018Home blood pressure monitoring (HBPM), which integrates patients into their treatment program, is a self-management tool. The prevalence of home sphygmomanometer...
Home blood pressure monitoring (HBPM), which integrates patients into their treatment program, is a self-management tool. The prevalence of home sphygmomanometer ownership and patient compliance with HBPM guidelines are not well known, especially in developing and underdeveloped countries. The aims of this study were to measure the prevalence of home sphygmomanometer ownership among hypertensive subjects through a nationwide field survey (PatenT2), to investigate the validation of sphygmomanometers and consistency of the user arm circumference and cuff size of the upper-arm device owned, as well as to compare blood pressure (BP) readings between hypertensive subjects who have or do not have a sphygmomanometer. Sample selection was based on a multistratified proportional sampling procedure to select a nationally representative sample of the adult population (n = 5437). Of 1650 hypertensive subjects, 332 (20.1%) owned a device, but the percentage of patients who owned a sphygmomanometer was 28.8% among patients who were aware of their hypertension (260/902). The usage of wrist devices and nonvalidated devices is common, and selection of an appropriate cuff size is ignored. Linear-regression analysis showed that owning a BP monitor is associated with decreases of 3.7 mmHg and 2.8 mmHg for systolic and diastolic BPs, respectively. Many patients do not own a sphygmomanometer. The decrease of systolic and diastolic BPs among BP monitor owners is a striking finding. The implementation of a hypertension care program consisting of sphygmomanometer reimbursement and training of patients in its use for HBPM might be cost-effective.
Topics: Adult; Aged; Blood Pressure; Female; Humans; Hypertension; Male; Middle Aged; Self Care; Sphygmomanometers; Surveys and Questionnaires; Turkey
PubMed: 29556094
DOI: 10.1038/s41440-018-0030-8 -
Anesthesiology Feb 2019
Review
Topics: Blood Pressure; Blood Pressure Determination; Humans; Hypertension; Hypotension; Medical Missions; Monitoring, Physiologic; Sphygmomanometers
PubMed: 30260896
DOI: 10.1097/ALN.0000000000002469 -
IEEE Journal of Translational... 2021Blood pressure (BP) is an essential indicator for human health and is known to be greatly influenced by lifestyle factors, like activity and sleep factors. However, the... (Randomized Controlled Trial)
Randomized Controlled Trial
Blood pressure (BP) is an essential indicator for human health and is known to be greatly influenced by lifestyle factors, like activity and sleep factors. However, the degree of impact of each lifestyle factor on BP is unknown and may vary between individuals. Our goal is to investigate the relationships between BP and lifestyle factors and provide personalized and precise recommendations to improve BP, as opposed to the current practice of general lifestyle recommendations. Our proposed system consists of automated data collection using home BP monitors and wearable activity trackers and feature engineering techniques to address time-series data and enhance interpretability. We propose Random Forest with Shapley-Value-based Feature Selection to offer personalized BP modeling and top lifestyle factor identification, and subsequent generation of precise recommendations based on the top factors. In collaboration with UC San Diego Health and Altman Clinical and Translational Research Institute, we performed a clinical study, applying our system to 25 patients with elevated BP or stage I hypertension for three consecutive months. Our study results validate our system's ability to provide accurate personalized BP models and identify the top features which can vary greatly between individuals. We also validate the effectiveness of personalized recommendations in a randomized controlled experiment. After receiving recommendations, the subjects in the experimental group decreased their BPs by 3.8 and 2.3 for systolic and diastolic BP, compared to the decrease of 0.3 and 0.9 for the subjects without recommendations. The study demonstrates the potential of using wearables and machine learning to develop personalized models and precise lifestyle recommendations to improve BP.
Topics: Blood Pressure; Humans; Life Style; Machine Learning; Sphygmomanometers; Wearable Electronic Devices
PubMed: 34765324
DOI: 10.1109/JTEHM.2021.3098173