Angiotensin-converting enzyme inhibitors in preclinical myxomatous mitral valve disease in dogs: systematic review and meta-analysis.

Administration of angiotensin-converting enzyme inhibitors to dogs with -preclinical myxoma- tous mitral valve disease and cardiomegaly results in little to no difference in the risk of the develop- ment of congestive heart failure and may result in little to no difference in -cardiovascular-related and all-cause mortality. The certainty of evidence of the efficacy of angiotensin-converting enzyme inhibi- tors administration to dogs without cardiomegaly was low.