Impact on hypertension reclassification by Ambulatory Blood Pressure Monitoring (ABPM) according to the V Brazilian Guidelines on ABPM.

Background: New recommendations on reference values for normal test results in ambulatory blood pressure monitoring (ABPM) were proposed by the V Brazilian Guidelines on Ambulatory Blood Pressure Monitoring, based mainly on the IDACO study.

Objectives: This epidemiological study is aimed at evaluating the impact of adopting these new standards in an arterial hypertension referral center.

Methods: The results of 1,567 ABPM tests carried out between 2005 and 2010 were analyzed; 481 patients were excluded from the sample for not meeting minimum quality criteria of the test.