ACE and congestive heart failure: The scientific publications on drugs tested in dogs with CHF secondary to MMVD (DNAD) were more numerous than in previous years, and many studies were performed on ACE inhibitors [232,233,234,235], β-blockers [236,237,238], sildenafil [239,240], amiodarone [241], diuretics [242], isosorbide 5-mononitrate [243], and amlodipine [244].