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Does evidence-based medicine suggest that physicians should not be measuring blood pressure in the hypertensive
John W Graves1, Sheldon G Sheps
1Division of Hypertension, Mayo Clinic and Mayo Foundation, Rochester, Minnesota 55905, USA. Graves.john@mayo.edu
Insights
Physicians should not measure blood pressure (BP) themselves for hypertension diagnosis and treatment. Relying on trained observers or automated devices ensures accurate BP readings, improving patient care quality.
Area of Science:
- Cardiology
- Clinical Medicine
- Public Health
Background:
- Hypertension is a leading cause for outpatient physician visits.
- Current Joint National Committee (JNC) VII guidelines advocate for aggressive hypertension management.
- Accurate blood pressure (BP) measurement is crucial for effective diagnosis and treatment.
Discussion:
- Physician-measured BP may be unreliable due to inadequate training and the 'white coat effect'.
- Evidence-based studies supporting JNC VII guidelines utilized BP measurements from trained observers or automated devices.
- The current approach to hypertension management necessitates a re-evaluation of BP measurement methods.
Key Insights:
- Physicians frequently lack adequate training in standardized BP measurement techniques.
- The 'white coat effect' can artificially elevate BP readings, compromising diagnostic accuracy.
- Reliance on physician-measured BP may hinder optimal hypertension control.
Outlook:
- Recommend physicians delegate BP measurement to trained personnel or validated automated devices.
- Implementing standardized, accurate BP measurement protocols can enhance hypertension care.
- Improved BP measurement accuracy is vital for achieving better patient outcomes in hypertension management.
Abstract:
The most common reason for an outpatient physician visit is for the diagnosis and treatment of hypertension. The Joint National Committee on Prevention, Detection, Evaluation, and Treatment of High Blood Pressure (JNC) VII, which is increasingly evidence-based, advises the clinician to use studies of the mean response and benefit derived from reduction in blood pressure (BP) from antihypertensive therapy and to translate this data into recommendations for the individual hypertensive patient. We believe that the increasingly aggressive approach to hypertension mandated by JNC VII calls into question the use of physician-measured BP. Ample evidence has shown that phycisians have not been adequately trained to measure BP and, therefore, rarely measure BP to the standards asked for by JNC VII or the American Heart Association (AHA) guidelines. In addition, the white coat effect dilutes the validity and usefulness of physician-measured BPs. Finally, in the evidenced-based studies used to derive the JNC VII guidelines, BPs were measured by nurses, other "trained observers," or automated devices, not physicians. Accurate BP measurement is critical to diagnosis and management of hypertension. We recommend, therefore, that for this purpose physicians should not measure BP themselves but should rely on BPs from well-trained and monitored observers or validated automated devices to improve the quality of care of the hypertensive patient.
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