Trajectories of Blood Pressure in Patients with Established Coronary Artery Disease over 20 years.

Objective: To evaluate changes in blood pressure (BP) values in patients with established coronary artery disease (CAD) over 20 years (1997-2017).

Materials and Methods: Consecutive patients aged <71 years and hospitalized for acute coronary syndrome or myocardial revascularization procedures were recruited and interviewed 6-18 months after their discharge from the hospital. BP was measured in 1997-1998, 1999-2000, 2006-2007, 2011-2013, and 2016-2017. The same five hospitals took part in the surveys at each time point.

Results: We examined 412 patients in 1997-1998, 427 in 1999-2000, 422 in 2006-2007, 462 in 2011-2013, and 272 in 2016-2017. The proportion of patients with BP at the recommended goal was 49.2% in 1997-98, 44.5% in 1999-2000, 44.7% in 2006-07, 51.1% in 2011-13, and 58.8% in 2016-17 ( p < 0.001). Mean systolic and diastolic BP decreased significantly independent of age, sex, and education (systolic BP: 137.9 ± 21.4 mmHg in 1997-98, 139.5 ± 21.6 mmHg in 1999-2000, 136.1 ± 20.3 mmHg in 2006-07, 134.8 ± 22.0 mmHg in 2011-13, and 134.2 ± 18.6 mmHg in 2016-17, p < 0.001; diastolic BP: 83.4 ± 11.0 mmHg in 1997-98, 84.8 ± 12.0 mmHg in 1999-2000, 85.2 ± 11.0 mmHg in 2006-07, 80.9 ± 12.5 mmHg in 2011-13, and 81.1 ± 10.4 mmHg in 2016-17; p < 0.001).

Conclusion: The analysis of five multicenter surveys provides evidence of a decrease in BP in patients with established CAD over two decades. This trend is independent of age, sex, and the education level of the patients.