My Experience w/ Propanolol, Atenolol, & Diltiazem
- My Tigger initially was put on Propanolol after a severe case of CHF
(conjestive heart failure) when he was 18 months old. Propanolol wiped
him out...lethargic wouldn't move...trouble breathing, etc. Found out
this drug is a non-selective beta blocker and can cause adverse
reactions including difficulty in breathing but it is the most
powerful beta blocker at a vet's disposal. After a week we then
switched him to Atenolol, a selective beta blocker, and he improved
dramatically. Tigger was almost back to himself with just a little
less stamina then before.
Tigger was taking a combination of Atenolol, Vasotec, and the baby
aspirin and was doing fine when on his semi-annual exam the vet
discovered moderate arrythmia and doubled his dosage of Vasotec &
Atenolol. He was tolerating this increased dosage pretty well for
about a month when one night his heart threw a clot that paralyzed his
rear legs. Fortunately it was only a partial blockage and within a
week he was back on his feet and could walk around. I think it may
have only been a partial blockage due to the baby aspirin he's been
To make a long story short(er), after consulting w/ several people
on the web and doing a lot of research, I convinced the vet to take
him off the Atenolol and put him on Diltiazem instead. She
begrudgingly did so, but only for a week and if that didn't work he
was going back on Atenolol/Propanolol or I would have to find a new
specialist. After a week he some seemed no worse than before but he
still had the arrhythmia. We decided to keep him on the Diltiazem and
he's been doing great for the last 6 months.
My feelings are that if your cat has not been in CHF then the beta
blockers (Propanolol/Atenolol) can keep HCM in check but if your cat
has had CHF episode, then a calcium channel blocker(Diltiazem) is the
better choice. Diltiazem also has some anti-clotting properties which
is good thing, while the beta blockers can restrict blood vessels
which is a bad thing if clot is thrown. I will have to say that beta
blockers (Propanolol and to a lesser extent Atenolol) are much better
at treating arrhythmia which is a major cause of clot formation.
- Joe Weissmann
- Hi Joe,
thank you for your message. I think I read somewhere that beta
blockers should be used with caution in CHF (congestive heart failure). I
will look at the site and write again. I think it said that they can worsen
> My feelings are that if your cat has not been in CHF then the betaPebbles has not been in CHF.
> blockers (Propanolol/Atenolol) can keep HCM in check but if your cat
> has had CHF episode, then a calcium channel blocker(Diltiazem) is the
> better choice.
> Diltiazem also has some anti-clotting properties whichThat is interesting. I will look into this and ask the vet.
> is good thing, while the beta blockers can restrict blood vessels
> which is a bad thing if clot is thrown.
> I will have to say that betaFor Pebbles the specialist said he wanted to lower her heart rate and
> blockers (Propanolol and to a lesser extent Atenolol) are much better
> at treating arrhythmia which is a major cause of clot formation.
hopefully that would help the heart.
I am still learning about heart disease in cats. I don't know very
much so I am sorry if I can't explain myself too well.
Love, Voula and Pebbles and Lucy and my Beautiful Angel Sachie.
I'll be praying for you and Pebbles in my thoughts and prayers.
Pumpkin, Max and Linda
From: Voula Augerinos [mailto:catwoman1@...]
Sent: Thursday, October 19, 2000 10:38 PM
Subject: Re: [feline-heart] Re: Diltiazem--Voula
Hi there Jeanne,
another positive and hopeful message. Thank you. And thank you for
saying that the anxiety eases. Yes I have noticed Pebbles has been a bit
less active lately. I also thought that because over the past few months
before Sachie died, that it was because Sachie was sick, because she used
to get Pebbles to play with her. I think that is true, because before
Pebbles would tear around a million miles an hour chasing Sachie. But I
also think that her heart could be a factor too. Well everyone, I am soon
to give Pebbles her first tablet (one quarter of a propranolol). Wish us
well. I think Pebbles will be okay, but I am going to need something
Love, Voula and Pebbles and my Beautiful Angel Sachie.
> From: Jeanne Warner <jwarner310@...>To unsubscribe from this group, send an email to:
> To: email@example.com
> Subject: [feline-heart] Re: Diltiazem--Voula
> Date: Friday, 20 October , 2000 12:28 PM
> I too have a cat, Dom, who is 5 years old and was diagnosed with HCM
> almost 1 year ago. He takes Diltiazem and Enalarpril. We did try baby
> aspirin for him but had to discontinue it because it caused him to
> throw up most every day. He has had 2 ultrasounds so far and the
> second 1 showed that there has been no farther deterioration and his
> heart rate was lower. The Enlarpril was added after the second
> ultrasound and we will return for the next ultrasound in January. I
> will be anxious to see if there have been any changes. We do see our
> regular vet in between the cardiologist check ups. She did a chem
> profile to check for renal function and it was fine. So, all has been
> going very well for Dom since his diagnosis. We have noticed that he
> became alot more active after being on the meds. He stated running
> and jumping again. Cardiologist says it is because he feels better.
> We all live with the fear of blood clots, kidney problems etc. but it
> does become less stressful as the time goes by. At first, I just
> watched him waiting for something bad to happen but now we know that
> we are doing everything we can for him and that is all that we can
> do. Of course this is easier to say when he has been doing so well.
> It does help if you have a good vet that you trust and a good
> cardiologist. Dom and I are lucky to have both!
> Good luck to you and Pebbles,
> Jeanne & Dom
> --- In firstname.lastname@example.org, "Jonathan Rosenberg" <jr40@r...>
> > > -----Original Message-----
> > > From: Melinda Bruno [mailto:brunobaby@a...]
> > > Sent: Thursday, October 19, 2000 10:54 AM
> > > To: email@example.com
> > > Subject: [feline-heart] Re: Diltiazem--Voula
> > > The cardiologist recommended enalapril (Vasotec), which is an ACE
> > > Inhibitor.
> > This is the same drug as enacard, which is what Lynx takes.
> > > If you've heard that this drug is not recommended for kidney
> > > patients, it's because it "cuts" the communication between
> > > the heart and the kidneys. Meaning that the kidneys yell "more
> > > blood!" and the heart doesn't hear them. This means less work
> > > for the heart, which is good for a heart patient, but could be
> > > bad for the kidneys.
> > I asked our vet about this a few weeks agio. She said that when
> > was first introduced, this was everyone's fear. But she said that
> > latest research had shown that the drug actually appears to be less
> > troublesome for the kidneys than ohter treatments.
> > Just another data point ...
> > > --Melinda and Pongo
> > --
> > JR
> > & Tabby (RB), Licorice, Tigger, Lynx
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