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Cat Forum / Health and Behavior / January 2004

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How to check the heart rate using a stethoscope?

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hamandcheese@betweentheknees.com - 23 Jan 2004 16:34 GMT
Because my cat gets too stressed at the vets I'm buying a stethoscope
today to do some home monitoring.

Where is the best place to listen for the heart beat or will this be
rather apparent when I get the stethoscope?

-mhd
kaeli - 23 Jan 2004 19:17 GMT
> Because my cat gets too stressed at the vets I'm buying a stethoscope
> today to do some home monitoring.
>
> Where is the best place to listen for the heart beat or will this be
> rather apparent when I get the stethoscope?

AFAIK: Underneath the left armpit, towards the chest, close to the chest
wall / ribcage.

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hamandcheese@betweentheknees.com - 24 Jan 2004 02:36 GMT
>> Where is the best place to listen for the heart beat or will this be
>> rather apparent when I get the stethoscope?
>
>AFAIK: Underneath the left armpit, towards the chest, close to the chest
>wall / ribcage.

Using my other cat for a quick test I found it across the chest from
armpit to armpit. The real patient is currently hiding because he got
back from the vet and is acting quite pissed. The purring is quite
something to hear though :-)

-mhd
Cheryl - 24 Jan 2004 02:50 GMT
wrote in news:3dm310l9bj9qf8n8282trac2tk9so7ue7b@4ax.com on 23 Jan 2004:

> Using my other cat for a quick test I found it across the chest from
> armpit to armpit. The real patient is currently hiding because he got
> back from the vet and is acting quite pissed. The purring is quite
> something to hear though :-)

LOL  I hear that a lot from Shadow's vet. He's so used to vet visits from
his ordeal with HL that when he's on the exam table and just being touched
by a vet he knows, and me right there with him, he purrs so loud they can't
hear his heart beat.  He doesn't have a meow at all, but his purrs can be
heard across the room with just a naked ear.  :) BTW, Shamrock is getting
to be the same way at the vet.  He has had so many visits due to his
allergies that it doesn't faze him much, except the waiting in the carrier
in the waiting room, and the car ride to the vet.  Coming home, he is the
same as Shadow, and he's quiet in the car. Just happy to be home and
running to the kitchen looking for food.  

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Cheryl

Trapped like rats. In a chia-pet.
MIB II

Phil P - 23 Jan 2004 19:32 GMT
> Because my cat gets too stressed at the vets I'm buying a stethoscope
> today to do some home monitoring.
>
> Where is the best place to listen for the heart beat or will this be
> rather apparent when I get the stethoscope?

Probably the left apex in the mitral region first - then inch your way to
the left base.  Whichever way you go, develop a routine and stick to it -
If you follow a routine, you'll get good at auscultation and you won't skip
important areas.  Auscultation is one of those things that if you learn
correctly right from the start, it gets easier and you get better and
better.  Cats' hearts aren't as easy as dogs' or humans' hearts to ausculate
because they vibrate much faster and at higher frequencies.

If you'll be using the steth only on your cat, get a *pediatric* or *infant*
stethoscope (1/2" - 3/4" diaphram) - not an adult stethoscope.  If you use
an adult steth on a cat, it will be very difficult if not impossible to
localize heart sounds because the diaphram and bell are too large - and
cover almost the entire heart.  With a smaller diaphram, you can auscult
different regions of the heart and pinpoint the area from where the sound
originates.

Another tip: Make sure the cat is sitting or standing and not lying on her
side during auscultation.  Lying on her side, the heart rubs against the
chest wall and sounds like a nasty gushing murmur!  Also, don't follow
bell/diaphram rules for dogs - they don't always apply to cats.  Cat hearts
are smaller and vibrate at a higher frequency than dogs' hearts. So contrary
to the "rule" that the HCM gallop is best heard with the bell, its actually
heard better and clearer in cats with the diaphram.

If you're really serious about learning auscultation and have a few extra
bucks to invest in an *excellent* stethoscope, I highly recommend the
electronic Littman 9000.  It amplifies 18x, *records* auscultations and
evens sends the recording to your computor via infrared so you can have a
permanent record or to email to your vet!  How's that!  The 9000 is only
available in the adult size but the amplification feature makes it easy to
localize heart sounds.

Good luck.

Phil
hamandcheese@betweentheknees.com - 24 Jan 2004 02:33 GMT
>> Where is the best place to listen for the heart beat or will this be
>> rather apparent when I get the stethoscope?
[quoted text clipped - 6 lines]
>better.  Cats' hearts aren't as easy as dogs' or humans' hearts to ausculate
>because they vibrate much faster and at higher frequencies.

Hi Phil,

Thanks for the very informative lesson but for know I just need to
know the approx heart rate because Zak's heart races at the vets.

This is all part of the hypothyroid problem that was discussed in Dec
which we were going to rush into the radio iodine treatment.

These are his numbers
Dec 11
T4 118
Urea 7.6
Creatinine 110
Pulse ~240 (very stressed at the time)

After listening to your and others opinion that he needs to go on
Tapazole for a trial period before radio iodine to monitor the kidneys
that's what we did. Starting Dec 21 we put him on 5mg a day half a
tablet morning and evening.

Jan 8 follow up test
T4 15.9
Urea 10.7
Creatinine 126
Pulse ~240

We then backed off to about 3.5 mg of Tapazole because the good T4
results happened rather quickly.

Today he went back for another blood series and I will have the
results tomorrow. His weight slipped a few ounces to 11 lbs 14 oz.
Pulse ~240

Overall we are very happy with the renal numbers for a 14 year old cat
but I am going to do the heart rate check at home. I had already
bought the stethoscope before reading your reply but I got a dual head
one with the small diaphragm on one side. As soon as he comes out of
his post vet hiding I'm going to check his heart rate.

-mhd
hamandcheese@betweentheknees.com - 24 Jan 2004 04:54 GMT
>Today he went back for another blood series and I will have the
>results tomorrow. His weight slipped a few ounces to 11 lbs 14 oz.
>Pulse ~240

I just want to clarify that Zak initially gained 3/4 lb during the
first 2 weeks of Tapazole, but then lost about 3 oz after the Tapazole
reduction. That could even be attributable to the difference between a
full and empty bladder.

-mhd
Phil P - 26 Jan 2004 12:59 GMT
> >> Where is the best place to listen for the heart beat or will this be
> >> rather apparent when I get the stethoscope?
[quoted text clipped - 11 lines]
> Thanks for the very informative lesson but for know I just need to
> know the approx heart rate because Zak's heart races at the vets.

Oops!  I had to cut my New Year vacation in the Orient short because of the
danger
of the extremely cold weather over here to the feral colonies in one of the
industrial parks...  My brain hasn't fully adapted to the 100* drop in
tempreature...   I thought by asking "Where is the best place to listen for
the heart
beat",  you wanted to know where is the best place to listen for the heart
beat, not the heart rate..... Mia culpa...;)

My kids still can't conceive the thought of people functioning in 5F*!  60*F
is cold and 50F* is frigid to them!

Anyway, a heart rate between 140-220 - is considered "normal".  An older
cat's HR should be in the lower end of the range.  Did you get a pediatric
or infant steth?

> This is all part of the hypothyroid problem that was discussed in Dec
> which we were going to rush into the radio iodine treatment.
[quoted text clipped - 9 lines]
> Tapazole for a trial period before radio iodine to monitor the kidneys
> that's what we did.

That's the *smart* play.

Check your numbers - include the units of measurements along with the lab's
reference range.

I'll get back to you later.

Best of luck.

Phil

Starting Dec 21 we put him on 5mg a day half a
> tablet morning and evening.
>
[quoted text clipped - 18 lines]
>
> -mhd
 
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