Blood pressure monitoring
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Blood pressure monitoring · Feb 2015
Comparative StudyCalibration of blood pressure data after replacement of the standard mercury sphygmomanometer by an oscillometric device and concurrent change of cuffs.
Oscillometric blood pressure (BP) measurement devices are increasingly replacing standard mercury sphygmomanometers and generalizability of validation studies to other environments, for example, national survey environments, is assumed. We compared BP measurements according to two highly standardized German national survey BP protocols: a standard mercury sphygmomanometer and an oscillometric device, Datascope Accutorr Plus, each with specific manufacturer-provided cuffs and cuff-selection rules. A sample of 105 adults were subjected to alternate same-arm BP measurements according to the principles of the International Protocol revision 2010 for the validation of BP-measuring devices in adults of the European Society of Hypertension. ⋯ For DBP<80/80-89/≥ 90 in 230/67/18 participants, the differences were -1.9 ± 5.0/-6.8 ± 5.9/-7.6 ± 5.2 mmHg. A calibration formula for SBP derived from linear regression modeling includes SBP, sex, age, pulse pressure, and the difference in the cuff-width to arm-circumference ratios for the two devices (for DBP without age). Our study suggests that even in a highly standardized national survey environment, reported agreement from validation studies may not be replicable and comparisons in the specific clinical or research setting can be useful before replacing the mercury device completely.
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Blood pressure monitoring · Oct 2014
ReviewClock genes in hypertension: novel insights from rodent models.
The circadian clock plays an integral role in the regulation of physiological processes, including the regulation of blood pressure. However, deregulation of the clock can lead to pathophysiological states including hypertension. ⋯ The goal of this review is to provide an introduction and general overview into the role of circadian clock genes in the regulation of blood pressure with a focus on their deregulation in the etiology of hypertension. This review will focus on the core circadian clock genes CLOCK, BMAL1, Per, and Cry.
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Blood pressure monitoring · Oct 2014
Comparative StudySerum uric acid and arterial stiffness in hypertensive chronic kidney disease patients: sex-specific variations.
Hyperuricemia and arterial stiffness are associated with increased cardiovascular risk. The specific relationship between arterial stiffness and serum uric acid (SUA) in chronic kidney disease (CKD) patients has not been investigated. We investigated whether the SUA level is associated with arterial stiffness in hypertensive CKD patients. ⋯ In hypertensive CKD patients, SUA was correlated with the two indices of arterial stiffness, PWV and AIx@75, with sex-specific variations. However, SUA was associated independently with only AIx@75, but not with PWV, in the entire patient population and only in men.
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Blood pressure monitoring · Jun 2014
Clinical TrialNeonatal/infant validation study of the CAS model 740 noninvasive blood pressure monitor with the Orion/MaxIQ NIBP module.
Blood pressure monitoring is an essential vital sign when caring for critically ill children. Invasive monitoring is considered the gold standard, but is not always feasible. The following study compared the CAS model 740 noninvasive blood pressure monitor with the Orion/MaxIQ NIBP module with the reference (invasive arterial measurement). We evaluated the validity of the system using the criteria provided by the Association for the Advancement of Medical Instrumentation. ⋯ The CAS model 740 noninvasive blood pressure monitor with the Orion/MaxIQ NIBP module fulfills the accuracy performance criteria of the Association for the Advancement of Medical Instrumentation. This model may allow for rapid and accurate noninvasive blood pressure monitoring in neonates and children.
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Blood pressure monitoring · Apr 2014
Cerebrovascular and systemic hemodynamic response to carbon dioxide in humans.
Arterial partial pressure alteration of CO2 ((Equation is included in full-text article.)) affects not only the cerebral blood flow velocity but also the systemic arterial blood pressure (BP). At the same time, BP can affect the cerebral blood flow. The objective of the present research is to study the impact of the (Equation is included in full-text article.)level on cerebrovascular CO2 reactivity ((Equation is included in full-text article.)) and BP as well as the impact of BP upon (Equation is included in full-text article.)alteration by hypercapnia and hypocapnia. ⋯ Within the alteration of (Equation is included in full-text article.)above 43 and under 26 mmHg, BP increased and decreased, respectively, leading to a change in (Equation is included in full-text article.).