Patient characteristics associated with treatment response in patients receiving salvianolate injection for stable angina

Objective To explore patient characteristics associated with treatment response in patients receiving salvianolate injection for stable angina. Methods An analysis was conducted of data from a multicenter, phase IV clinical trial undertaken in China that enrolled 2150 patients hospitalized for stable angina from 50 hospitals. The treatment outcomes were changes of angina severity and nitroglycerin use between baseline and the last day of treatment. We used logistic regression models to explore patient characteristics associated with the treatment response. Results Patients who were overweight or obese (ORa 1.20, 95% CI 1.01 to 1.44), present with hypertension (ORa 1.23, 95% CI 1.01 to 1.49), experienced with 3 or more episodes of angina per week (ORa 1.77, 95% CI 1.44 to 2.17), or concomitantly using antiplatelet agents (ORa 1.44, 95% CI 1.17 to 1.78) were associated with better treatment response defined with the change of angina severity. Those of overweight or obesity (ORa 1.57, 95% CI 1.17 to 2.12) or concomitantly using calcium antagonists (ORa 2.38, 95% CI 1.39 to 4.08) fared better treatment response according to discontinuation or reduction of nitroglycerin use. Conclusions Patients diagnosed with stable angina and receiving salvianolate injection might fare better treatment response if they were overweight or obese, experienced with hypertension, three or more episodes of angina per week, or concomitantly using antiplatelet agents and calcium antagonists.