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[White coat hypertension]
1Service de cardiologie, hôpital de la Croix-Rousse, EA 645, 103, Grande-rue de la Croix-Rousse, 69004 Lyon.
Insights
White coat hypertension and the white coat effect are distinct conditions impacting blood pressure readings. Differentiating them is crucial for accurate diagnosis and avoiding unnecessary drug therapy.
Area of Science:
- Cardiology
- Hypertension Research
Context:
- White coat hypertension and white coat effect are prevalent clinical phenomena.
- Distinguishing between these conditions is essential due to overlapping terminology but distinct clinical meanings.
Purpose:
- To clarify the definitions and diagnostic challenges of white coat hypertension and white coat effect.
- To highlight the implications of misdiagnosis in hypertension management.
Summary:
- The white coat effect is a transient blood pressure increase due to physician presence, measurable via blood pressure monitoring.
- White coat hypertension signifies elevated clinic blood pressure with normal readings outside the office.
- Current assessment methods for the white coat effect are often inadequate, and definitions for white coat hypertension lack standardization.
Impact:
- Accurate differentiation prevents misdiagnosis of severe or resistant hypertension, avoiding inappropriate treatment.
- Understanding these conditions aids in appropriate patient management and prognosis evaluation.
- Mild cardiovascular consequences typically do not warrant pharmacologic intervention.
Abstract:
White coat hypertension and the white coat effect are common clinical problems. Although they have similar names, they do not correspond to strictly identical entities. The white coat effect is an increase in blood pressure induced by the physician. It may be observed for all degrees of mean blood pressure and it is usually assessed by the difference between conventional and ambulatory blood pressure values. White coat hypertension is a qualitative status associating clinical hypertension and "normotension" outside the physician's office. In practice, the application of these definitions presents many difficulties. The usual methods of evaluating the white coat effect are a poor marker of the true effect as measured by continuous blood pressure monitoring. White coat hypertension has many definitions, both with respect to the threshold of clinical hypertension and to that of ambulatory normotension. Any attempt at evaluating the prognosis of these two conditions are faced with these considerations. However, the cardiovascular consequences which result appear to be mild and, usually, do not justify drug therapy. Their principal implications are above all diagnostic as they may lead to the erroneous assumption of severe or drug-resistant hypertension.