WEDNESDAY, March 26, 2025 (HealthDay News) -- In patients with heart failure with improved ejection fraction (EF), pharmacological therapy is rarely withdrawn, according to a study published online March 17 in Circulation.Christian Basile, M.D., from the Karolinska Institutet in Stockholm, and colleagues assessed rates, patient profiles, and associations with morbidity/mortality of renin-angiotensin inhibitors (RASi), angiotensin receptor-neprilysin inhibitors (ARNi), beta-blockers (BBL), and mineralocorticoid receptor antagonist (MRA) withdrawal in patients with heart failure with improved EF. The analysis included 8,728 patients with heart failure with improved EF (first recorded EF <40 percent and a later EF ≥40 percent).The researchers found that the withdrawal rates at the time of the improved EF registration were 4.4 percent for RASi/ARNi, 3.3 percent for BBL, and 17.2 percent for MRA. Lower use of other heart failure medications, higher EF at the later EF registration, and a longer time between the two EF assessments were predictors of withdrawal. Withdrawal was independently associated with a higher risk for cardiovascular mortality/hospitalization at one year for heart failure by 38 percent for RASi/ARNi and 36 percent for MRA after weighting, but there was no association for BBL. There was an association with a higher risk for the primary outcome in the subgroup of patients withdrawn from BBL with an improved EF of 40 to 49 percent versus ≥50 percent."These results are hypothesis-generating and highlight the need for randomized controlled trials testing BBL withdrawal in patients with heart failure with improved EF," the authors write.Several authors disclosed ties to the pharmaceutical industry.Abstract/Full Text.Sign up for our weekly HealthDay newsletter