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Re-examination of some of the Framingham blood-pressure data
Mathematical smoothing of data for the Framingham study leads to the conclusion that there is no threshold of normality for blood-pressure. A reasonable therapeutic goal might be "the lower the better". However, examination of the unsmoothed Framingham data indicates that while systolic pressures fit this no-threshold model reasonably well, changes in diastolic pressure below about 90 mm Hg have little or no prognostic significance. The poor fit of the diastolic points to the no-threshold model may also help to explain why at Framingham raised systolic pressure seemed to have a greater impact than raised diastolic pressure.
Mathematical smoothing of data for the Framingham study leads to the conclusion that there is no threshold of normality for blood-pressure. A reasonable therapeutic goal might be "the lower the better". However, examination of the unsmoothed Framingham data indicates that while systolic pressures fit this no-threshold model reasonably well, changes in diastolic pressure below about 90 mm Hg have little or no prognostic significance. The poor fit of the diastolic points to the no-threshold model may also help to explain why at Framingham raised systolic pressure seemed to have a greater impact than raised diastolic pressure.
Related Concept Videos
Sites for measuring blood pressure
The Brachial Artery: Primary Site for Blood Pressure Measurement
Assessment of blood pressure in brachial artery(one-step method)
Prepare for the Procedure:
Assessment of blood pressure in brachial artery(two-step method)
Special considerations while measuring blood pressure
Monitoring Both Arms:
Monitoring BP in both arms during the initial assessment is advisable, as the systolic value may differ by five to ten mm Hg between arms. For subsequent BP assessments, use the arm with the higher reading.
Pre-Procedural Guidelines for Assessing Blood Pressure
Measurement of Blood Pressure

