https://www.vetsurgeon.org/f/clinical-questions/22541/chf-in-a-dog-with-patent-ductus-arteriosus We have a 6yrs old female entire dog with a PDA which has only now gone into congestive heart failure. She did not have a surgery to ligate the PDA. She has responded clinically well to frusemide but obviously still has pulmonary venous hypertensionen-USTelligent Community 10https://www.vetsurgeon.org/thread/135824?ContentTypeID=1Fri, 15 May 2015 13:26:42 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:79eebbbc-82fd-4e76-9edd-c13d4017432aMike Martin<p>Would the owners consider having it closed (if not too late)? Info about the procedure for the owners&nbsp;<a target='_blank' target="_blank" href="http://www.martinreferrals.com/cat-dog-heart-lung-disease/treatment/patent-ductus-arteriosus-pda/">here</a>&nbsp;and for vets <a target='_blank' target="_blank" href="http://www.martinreferrals.com/cat-dog-heart-lung-disease/vet-area/cardiac-interventions/patent-ductus-arteriosus-pda/">here</a>.</p> <p>For treatment: frusemide, pimo, ACEi, spironolactone.</p> <p>&nbsp;</p><div style="clear:both;"></div>https://www.vetsurgeon.org/thread/135559?ContentTypeID=1Wed, 13 May 2015 10:17:18 GMT146601cc-3922-4be7-9974-7e1d4e45a66b:3cdf39f0-684f-4c33-8c9f-1c5023bfeba2Martin Atkinson<p>You have a failing heart here for whatever reason so IMO: Pimobendan, Pimobendan, Pimonendan. And an ACEi to inactivate the RAS system - benazapril would be my choice as it is anti-hypertensive as well. Add in Modurectic if the pulmonary oedema isn&#39;t controlled by frusemide alone. You could do worse than throw in some spironolactone as well. Sildenafil would be a last resort if the others don&#39;t work but double dose Pimobendan often works if you&#39;re losing control.</p><div style="clear:both;"></div>