White coat effect and white coat hypertension: one and the same?

Area of Science:

• Cardiology
• Hypertension Research
• Clinical Medicine

Background:

• White coat hypertension (WCHT) and white coat effect (WCE) are frequently confused but are distinct clinical entities.
• WCHT is defined by elevated office blood pressure (OBP) readings (≥140/90 mmHg) despite normal out-of-office blood pressure (<135/85 mmHg).
• WCE is a transient OBP elevation due to the alerting response to healthcare professionals, occurring in normotensive and hypertensive individuals.

Purpose of the Study:

• To clarify the diagnostic differences between WCHT and WCE.
• To discuss the distinct prognostic implications of WCHT and WCE.
• To provide an evidence-based approach to managing these conditions.

Main Methods:

• Review of diagnostic criteria for WCHT and WCE.
• Analysis of existing literature on the prevalence and prognostic significance of WCHT and WCE.
• Case scenario discussion to illustrate diagnostic challenges.

Main Results:

• WCHT affects approximately 15% of the population and is associated with increased target organ damage compared to normotensive individuals.
• WCE is a common phenomenon, but its prognostic significance for cardiovascular events remains debated, with most evidence suggesting it does not predict future morbidity or mortality.
• Individuals with WCHT have a better cardiovascular prognosis than those with sustained hypertension.

Conclusions:

• Accurate differentiation between WCHT and WCE is crucial due to their differing prognostic implications.
• WCHT requires careful monitoring and management due to potential target organ damage.
• Further research is needed to fully elucidate the long-term risks associated with WCE.