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Old 12-21-2004, 04:50 PM   #1
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Ambient temperature & Blood pressure

Since I quit taking Benicar HCTZ I have been steadily losing weight & my blood pressure has been gradually going down. At times my BP is where i want it to be (below 155/95, at limes in the 120's / 80's), but lately i've been getting strange swings in my blood pressure, sometimes it is great then it is high. I know now that I react to salt more than many people, but sometimes when it spikes up I know I havent had any salt.
I was working in the shop most of the afternoon, where it is very chilly today, and my BP has been high all afternoon.
Is it possible that colder ambient temperatures cause BP to go up?
I usually "underdress" because i am used to working outside, it is nothing for me to be wearing a t-shirt in a 50 degree room, if I dress like most people i sweat like crazy

 
Old 12-21-2004, 07:00 PM   #2
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Re: Ambient temperature & Blood pressure

I sweated alot when i took hctz and lisinopril. I also felt warmer than most ppl in cold weather.

 
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Old 12-22-2004, 08:33 AM   #3
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Re: Ambient temperature & Blood pressure

Quote:
Originally Posted by mrmojo
Is it possible that colder ambient temperatures cause BP to go up?
Yep, temperature has an effect on BP. Cold raises it. Hot tubs and steam rooms lower it. It makes you wonder why there are signs telling you to avoid hot tubs with hypertension.

Pal

 
Old 12-22-2004, 08:51 AM   #4
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Re: Ambient temperature & Blood pressure

Strange.... It has been colder than usual where I live in the S.E. & my B/P has been at the same levels. I thought that hot tubs actually raise b/p. Maybe I am incorrect.

 
Old 12-22-2004, 09:09 AM   #5
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Re: Ambient temperature & Blood pressure

I have also read that temperature affects blood pressure. Why do they tell you not to measure your bp after a meal? Why does that have any effect?

 
Old 12-23-2004, 01:40 AM   #6
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Re: Ambient temperature & Blood pressure

Axe and Mrmojo,

Palamedes is right..cold raises BP and heat lowers it though one would think it would be the opposite!!

Sitting in a hot tub for a few minutes probably isn't going to do any harm if you don't overdo it, but it does cause your blood vessels to relax (vasodilation) and therefore can lower blood pressure. If you are already on BP meds, the result can often be an even bigger drop in blood pressure and may result in dizziness or even fainting when you stand up.

Blood pressure rises when it gets colder because the blood vessels narrow.. (vasoconstriction).. in order to preserve body heat.



zuzu xx

Last edited by zuzu8; 12-23-2004 at 01:41 AM.

 
Old 12-23-2004, 04:59 AM   #7
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Re: Ambient temperature & Blood pressure

Yep, I agree,

It's a very marked effect for me. If I am sitting in a chair and take my shirt off to check the PB, if I am chilly at that point, the readings will SOAR. It's also always FREEZING in my doctor's office...maybe contributing to White Coat.

As soon as the body perceives itself to be a few tenths of a degree higher than NORMAL (98.6 for me and most) the millions of arterioles in the skin open and flush the skin with copious warm blood. My BP can easily drop 20 points systolic in a warm room. A cup of hot tea or soup (chicken?) will almoost immediately drop my BP.

Vice versa for cold and the clampdown of arterioles.

(I've been doing a lot of steam and sauna with my ongoing HCTZ "fast." Getting rid of salty perspiration will also lower BP but by a less direct route than just the heat.)

Last edited by Lenin; 12-23-2004 at 05:04 AM.

 
Old 12-23-2004, 07:02 AM   #8
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Re: Ambient temperature & Blood pressure

So i guess i just need to start wearing more clothes (and doing more laundry)

I turned the heat up in the office yesterday, havent noticed any change in bp but its dang cold outside

My body temp usually runs about 97.5, i wonder if having a lower than normal body temp has anything to do with my bp & high cold tolerance

 
Old 12-23-2004, 07:51 AM   #9
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Re: Ambient temperature & Blood pressure

You know how they sometimes recommend a relaxing bath when someone is stressed out? Too bad I didn't realize while I was still working how much that would have influenced my blood pressure. I soaked in a very warm tub for maybe 15 minutes recently when my BP was up, and my systolic decreased by almost 60 points! And it took hours for it to creep back up again. (Actually, it hasn't reached the same high since.) I wouldn't want to see what a cold shower would do to my BP.

 
Old 12-23-2004, 08:04 AM   #10
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Re: Ambient temperature & Blood pressure

My body temp usually runs about 97.5, i wonder if having a lower than normal body temp has anything to do with my bp & high cold tolerance

Since being on B/P meds. my body temperature has dropped a degree or more as well.

After finding out that hot tubs lower B/P, I will be spending more time with my g/f in the hot tub.... thanks for the input!!!

 
Old 12-23-2004, 01:09 PM   #11
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Re: Ambient temperature & Blood pressure

Quote:
Originally Posted by Lillians Axe
My body temp usually runs about 97.5, i wonder if having a lower than normal body temp has anything to do with my bp & high cold tolerance

Since being on B/P meds. my body temperature has dropped a degree or more as well.

After finding out that hot tubs lower B/P, I will be spending more time with my g/f in the hot tub.... thanks for the input!!!
It's the Beta Blocker. My temp used to be normal (98.6) but after being on atenolol for a number of years it runs about 97. I am always cold and I live in south TX
Cass

 
Old 12-27-2004, 06:36 AM   #12
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Re: Ambient temperature & Blood pressure

Cass,

Mine runs 97 or so on the Atenolol. It is what causes me to feel dizzy & etc. I thought that is what did it. I look at readings like 97.2 & wonder what is going on.... thanks for solving that!

 
Old 12-27-2004, 02:24 PM   #13
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Re: Ambient temperature & Blood pressure

Quote:
Originally Posted by Lillians Axe
Cass,

Mine runs 97 or so on the Atenolol. It is what causes me to feel dizzy & etc. I thought that is what did it. I look at readings like 97.2 & wonder what is going on.... thanks for solving that!
Yeah, I do have to agree. Beta Blockers are among the worst when comes to side effects. I live in a warm area (south TX) and my feet and hands are painfully cold all the time (BB side effect). I don't have any energy to do the things I enjoy and get fatigued early in the day (BB side effect). Some dizziness too. But unfortunately I have to take atenolol for tachycardia.
For that reason, I am grateful that Beta Blockers exist.
Cass

Last edited by CASSIEBEL; 12-27-2004 at 02:27 PM.

 
Old 12-28-2004, 07:30 AM   #14
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Re: Ambient temperature & Blood pressure

Cassie,

It does the same thing to me. I have just come to the conclusion that the side-effects aren't worth it. It lowers my pulse to 52 or so on most days. It makes me feel lazy, lethargic & like junk. I will see a specialist in February & hopefully straighten this out.

 
Old 12-28-2004, 10:28 AM   #15
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Re: Ambient temperature & Blood pressure

Wow,

If beta-blockers indeed lower body temperature (a LONG time since I've taken them regularly), that might also explain why beta blocker so readily cause weight gain. The effect is probably IN ADDITION to the weakened heartbeat using less calories. Ah the awful memories of nadolol, propranolol, and atenolol.

I guess the one thing all the posters seem to have in common is that beta-blockers ARE NOT the drug class of choice for hypertension management.

Last edited by Lenin; 12-28-2004 at 10:30 AM.

 
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