One of the most obvious observations among early studies that employed ambulatory measures of blood pressure recording was the fact that blood pressure tended to decrease (or dip) during nighttime hours or the hours during which the patient was sleeping. […]
Although significant technological advances have permitted the development of several valid ways to measure blood pressure, most clinic determinations of blood pressure are still made using the good old-fashioned auscultatory method. It is readily available in any medical setting and […]
Unfortunately, both auscultatory and oscillometric methods of blood pressure assessment are intermittent measures in that a single blood pressure determination can take almost an entire minute to obtain. Additionally, a brief rest period is recommended between measures of blood pressure […]
The vascular unloading method, initially described by Penaz (1973), involves obtaining estimates of blood pressure from a small pressurized cuff positioned over a finger in conjunction with a photoplethysmograph. One such apparatus, called the Finger Arterial Pressure System or FINAPRES™, […]
The oscillometric method of measuring blood pressure with an automated cuff yields valid estimates of mean pressure but questionable estimates of systolic and diastolic pressures. Existing algorithms are sensitive to differences in pulse pressure and artery stiffness. Some are closely […]
Due to the subjectivity associated with pulse palpation and general lack of correspondence between estimates obtained from pulse palpation and intra-arterial measures of blood pressure, considerable effort was focused upon developing an accurate noninvasive method (Cook and Briggs, 1903; Crenner, […]
Direct Intra-arterial Recording The first method established for measuring blood pressure, intra-arterial recording, was discovered in 1733 when Hales inserted a thin glass tube into a horse’s artery during a surgical procedure. The level of the blood rose and fell […]
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