BP variation range

Cc88m said:

My BP ranges between (lower number) 80 and 110 quite randomly (couldn't find any good correlation
between drinking alcohol, cold weather, blood glucose, although there seemed be a weak correlation
with all of them, and a fair correlation with exercise). Although within one day, it is usually
within the higher or lower parts of this range, it can jump up and down from the top to the bottom
of this range in less than a day. Is this common, or do most people have smaller ranges and more
constant numbers?

Not for the diastolic (lower number).

Quoted message said:

Since I see my doc only a few times a year, what does BP that he measures mean, if it is really
varying by so much from day to day?

Shouldn't be. Would suggest you inform your doctor that you believe it is.

Quoted message said:

Although 110 is obviously high, if its there for only part of a day, is that considered high if
the average is around 84?

Yes.

Quoted message said:

I use a Mark of Fitness monitor but my manual bulb instrument on the arm gives about the same
range (but I can't make more than a few measurements a day with it; so tho the wrist unit is less
reproducible, it can give better intra-day statistics).

Whenever I visit the doctor's office he always measures much lower values (about 75). I have tried
several different wrist monitors as well as the large (arm) machines in supermarkets, and they all
agree (more or less) with my wrist monitor in range and average and disagree with my doc's. Any
explanations?

The diastolic "measurement" is actually a calculation based on the systolic measurement and the
heart rate.

Quoted message said:

I am ascribing it to accidental, since my range is so large, but it has happened every time so
far, for about 5 times (can't go to doc too often, you know), while I am below 80 less than 10%
of the time.

Sounds like it has been your heart rate that actually may have been the most variable.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗

(Cc88m) said:

I have tried several different wrist monitors as well as the large (arm) machines in
supermarkets, and they all agree (more or less) with my wrist monitor in range and average and
disagree with my doc's. Any explanations?

Ask your doctor the last time their blood pressure equipment has been calibrated. If within 6
months, then take your equipment into their office and compare your equipment with your doctor's.

Check cuff size for yours and your doctor's cuff; are they correct?

Wrist cuffs may be useful for trending, but do not base therapeutic changes on the measurements.

I have been quite impressed with some of the automated machines at our local pharmacies; the "sit
down and insert your arm" type. These machines will typically adjust cuff size automatically, a
feature too expensive for most home units. You might consider taking your blood pressure before
entering the store, and then on one of those machines.

--
Winning against heart attack and stroke sonoscore.comsonoscore.comOpen ↗

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Dr. Andrew B. Chung said:

Cc88m said:

My BP ranges between (lower number) 80 and 110 quite randomly (couldn't find any good correlation
between drinking alcohol, cold weather, blood glucose, although there seemed be a weak correlation
with all of them, and a fair correlation with exercise). Although within one day, it is usually
within the higher or lower parts of this range, it can jump up and down from the top to the bottom
of this range in less than a day. Is this common, or do most people have smaller ranges and more
constant numbers?

Not for the diastolic (lower number).

Quoted message said:

Since I see my doc only a few times a year, what does BP that he measures mean, if it is really
varying by so much from day to day?

Shouldn't be. Would suggest you inform your doctor that you believe it is.

Quoted message said:

Although 110 is obviously high, if its there for only part of a day, is that considered high if
the average is around 84?

Yes.

Quoted message said:

I use a Mark of Fitness monitor but my manual bulb instrument on the arm gives about the same
range (but I can't make more than a few measurements a day with it; so tho the wrist unit is less
reproducible, it can give better intra-day statistics).

Whenever I visit the doctor's office he always measures much lower values (about 75). I have tried
several different wrist monitors as well as the large (arm) machines in supermarkets, and they all
agree (more or less) with my wrist monitor in range and average and disagree with my doc's. Any
explanations?

The diastolic "measurement" is actually a calculation based on the systolic measurement and the
heart rate.

What is the calculation? Doesn't appear to be linear to me from my readings - here's a couple:
149/86 with rate of 65 and 137/85 with a rate of 66.

Quoted message said:

Quoted message said:

I am ascribing it to accidental, since my range is so large, but it has happened every time so
far, for about 5 times (can't go to doc too often, you know), while I am below 80 less than 10%
of the time.

Sounds like it has been your heart rate that actually may have been the most variable.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist heartmdphd.comheartmdphd.comOpen ↗

Thanks!

Ernie Adsett

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bgcolor="#ffffff"> <br> <br>
Ds. Andrew B. Chung, MD/PhD wrote:<br> <blockquote type="cite"
cite="[email hidden]"> <pre wrap="">Cc88m wrote:

</pre> <blockquote type="cite"> <pre wrap="">My BP ranges between (lower number) 80 and 110 quite
randomly (couldn't find any good correlation between drinking alcohol, cold weather, blood
glucose, although there seemed be a weak correlation with all of them, and a fair correlation with
exercise). Although within one day, it is usually within the higher or lower parts of this range,
it can jump up and down from the top to the bottom of this range in less than a day. Is this
common, or do most people have smaller ranges and more constant numbers? </pre> </blockquote> <pre
wrap=""><!----> Not for the diastolic (lower number).

</pre> <blockquote type="cite"> <pre wrap="">Since I see my doc only a few times a year, what does
BP that he measures mean, if it is really varying by so much from day to day?

</pre> </blockquote> <pre wrap=""><!----> Shouldn't be. Would suggest you inform your doctor
that you believe it is.

</pre> <blockquote type="cite"> <pre wrap="">Although 110 is obviously high, if its there for
only part of a day, is that considered high if the average is around 84? </pre> </blockquote>
<pre wrap=""><!----> Yes.

</pre> <blockquote type="cite"> <pre wrap=""> I use a Mark of Fitness monitor but my manual bulb
instrument on the arm gives about the same range (but I can't make more than a few measurements a
day with it; so tho the wrist unit is less reproducible, it can give better intra-day statistics).

Whenever I visit the doctor's office he always measures much lower values (about 75). I have tried
several different wrist monitors as well as the large (arm) machines in supermarkets, and they all
agree (more or less) with my wrist monitor in range and average and disagree with my doc's. Any
explanations? </pre> </blockquote> <pre wrap=""><!----> The diastolic "measurement" is actually a
calculation based on the systolic measurement and the heart rate. </pre> </blockquote> What is the
calculation? Doesn't appear to be linear to me from my readings - here's a couple: 149/86 with
rate of 65 and 137/85 with a rate of 66.<br> <br> <br> <blockquote type="cite"
cite="[email hidden]"> <blockquote type="cite"> <pre wrap=""> I am ascribing it
to accidental, since my range is so large, but it has happened every time so far, for about 5 times
(can't go to doc too often, you know), while I am below 80 less than 10% of the time. </pre>
</blockquote> <pre wrap=""><!----> Sounds like it has been your heart rate that actually may have
been the most variable.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
<a class="moz-txt-link-freetext" href="heartmdphd.comheartmdphd.comOpen ↗">heartmdphd.comheartmdphd.comOpen ↗</a>

</pre>
</blockquote>
Thanks!<br>
<br>
Ernie Adsett<br>
<br>
</body>
</html>

--------------080200090201040405020007--

are you keeping your arm at the same angle for both readings? you can do a little experiment and see
that it makes a big difference if you drop your arm down below your heart level or hold it above
heart level. arm should be at right angle to the body and supported. janet

"Sonos" <[email hidden]> wrote in message "]news:[email hidden]...

Quoted message said:

(Cc88m) said:

I have tried several different wrist monitors as well as the large
(arm) machines in supermarkets, and they all agree (more or less) with

my

Quoted message said:

Quoted message said:

wrist monitor in range and average and disagree with my doc's. Any explanations?

Ask your doctor the last time their blood pressure equipment has been calibrated. If within 6
months, then take your equipment into their office and compare your equipment with your doctor's.

Check cuff size for yours and your doctor's cuff; are they correct?

Wrist cuffs may be useful for trending, but do not base therapeutic

changes

Quoted message said:

on the measurements.

I have been quite impressed with some of the automated machines at our

local

Quoted message said:

pharmacies; the "sit down and insert your arm" type. These machines will typically adjust cuff
size automatically, a feature too expensive for most home units. You might consider taking your
blood pressure before entering the store, and then on one of those machines.

--
Winning against heart attack and stroke sonoscore.comsonoscore.comOpen ↗

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Ernie Adsett said:

Dr. Andrew B. Chung said:

Cc88m said:

My BP ranges between (lower number) 80 and 110 quite randomly (couldn't find any good
correlation between drinking alcohol, cold weather, blood glucose, although there seemed be a
weak correlation with all of them, and a fair correlation with exercise). Although within one
day, it is usually within the higher or lower parts of this range, it can jump up and down from
the top to the bottom of this range in less than a day. Is this common, or do most people have
smaller ranges and more constant numbers?

Not for the diastolic (lower number).

Quoted message said:

Since I see my doc only a few times a year, what does BP that he measures mean, if it is really
varying by so much from day to day?

Shouldn't be. Would suggest you inform your doctor that you believe it is.

Quoted message said:

Although 110 is obviously high, if its there for only part of a day, is that considered high if
the average is around 84?

Yes.

Quoted message said:

I use a Mark of Fitness monitor but my manual bulb instrument on the arm gives about the same
range (but I can't make more than a few measurements a day with it; so tho the wrist unit is
less reproducible, it can give better intra-day statistics).

Whenever I visit the doctor's office he always measures much lower values (about 75). I have
tried several different wrist monitors as well as the large (arm) machines in supermarkets, and
they all agree (more or less) with my wrist monitor in range and average and disagree with my
doc's. Any explanations?

The diastolic "measurement" is actually a calculation based on the systolic measurement and the
heart rate.

What is the calculation? Doesn't appear to be linear to me from my readings - here's a couple:
149/86 with rate of 65 and 137/85 with a rate of 66.

You'll have to check with the manufacturer.

Quoted message said:

Quoted message said:

Quoted message said:

I am ascribing it to accidental, since my range is so large, but it has happened every time so
far, for about 5 times (can't go to doc too often, you know), while I am below 80 less than
10% of the time.

Sounds like it has been your heart rate that actually may have been the most variable.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD Board-Certified Cardiologist heartmdphd.comheartmdphd.comOpen ↗

Thanks!

Ernie Adsett

You are welcome :-)

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗

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Ernie Adsett wrote:
<blockquote TYPE=CITE>
<p>Dr. Andrew B. Chung, MD/PhD wrote:
<blockquote type="cite" cite="[email hidden]">
<pre wrap="">Cc88m wrote:

</pre>

<blockquote type="cite">
<pre wrap="">My BP ranges between (lower number) 80 and 110 quite randomly (couldn't find
any good correlation between drinking alcohol, cold weather, blood glucose,
although there seemed be a weak correlation with all of them, and a fair
correlation with exercise). Although within one day, it is usually within the
higher or lower parts of this range, it can jump up and down from the top to
the bottom of this range in less than a day. Is this common, or do most people
have smaller ranges and more constant numbers?
</pre>
</blockquote>

<pre wrap=""><!---->
Not for the diastolic (lower number).

</pre>

<blockquote type="cite">
<pre wrap="">Since I see my doc only a few
times a year, what does BP that he measures mean, if it is really varying by so
much from day to day?

</pre>
</blockquote>

<pre wrap=""><!---->
Shouldn't be. Would suggest you inform your doctor that you believe it is.

</pre>

<blockquote type="cite">
<pre wrap="">Although 110 is obviously high, if its there for only part of a day, is that
considered high if the average is around 84?
</pre>
</blockquote>

<pre wrap=""><!---->
Yes.

</pre>

<blockquote type="cite">
<pre wrap=""> I use a Mark of Fitness monitor
but my manual bulb instrument on the arm gives about the same range (but I
can't make more than a few measurements a day with it; so tho the wrist unit is
less reproducible, it can give better intra-day statistics).

Whenever I visit the doctor's office he always measures much lower values
(about 75). I have tried several different wrist monitors as well as the large
(arm) machines in supermarkets, and they all agree (more or less) with my wrist
monitor in range and average and disagree with my doc's. Any explanations?
</pre>
</blockquote>

<pre wrap=""><!---->
The diastolic "measurement" is actually a calculation based on the systolic
measurement and the heart rate.
</pre>
</blockquote>
What is the calculation? Doesn't appear to be linear to me from my readings
- here's a couple: 149/86 with rate of 65 and 137/85 with a rate
of 66.
<br> </blockquote>
You'll have to check with the manufacturer.
<blockquote TYPE=CITE>
<br>
<blockquote type="cite" cite="[email hidden]">
<blockquote type="cite">
<pre wrap=""> I
am ascribing it to accidental, since my range is so large, but it has happened
every time so far, for about 5 times (can't go to doc too often, you know),
while I am below 80 less than 10% of the time.
</pre>
</blockquote>

<pre wrap=""><!---->
Sounds like it has been your heart rate that actually may have been the most
variable.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
<a href="heartmdphd.comheartmdphd.comOpen ↗" class="moz-txt-link-freetext">heartmdphd.comheartmdphd.comOpen ↗

</a></pre>
</blockquote>
Thanks!
<p>Ernie Adsett
<br> </blockquote>

<p><br>You are welcome :-)
<p>Humbly,
<p>Andrew
<p>--
<br>Dr. Andrew B. Chung, MD/PhD
<br>Board-Certified Cardiologist
<br><A HREF="heartmdphd.comheartmdphd.comOpen ↗">heartmdphd.comheartmdphd.comOpen ↗</A>
<br>
</body>
</html>

--------------50E4FF1EE9ED6C77A9134991--

Quoted message said:

You might consider taking your blood pressure before entering the store, and then on one of those
machines.

That is exactly what I did, and it agrees with my wrist monitor, not my doc.
C. C. Chang; more on piano practice at

members.aol.comcontents.htmOpen ↗

Cc88m said:

What does diastolic have to do with heart rate? My understanding is ZILCH. I have done exercise
until my rate is over 130 and I still measure 80 diastolic (my 30 day average is 83).

Blood pressure (MAP) is the product of cardiac output (CO) and systemic vascular resistance (SVR).

Cardiac output is the product of cardiac stroke volume (SV) and heart rate (HR).

MAP = SV*HR*SVR

And, MAP = (1/3)*SBP + (2/3)*DBP

The relationship is therefore not ZILCH but:

DBP = (3/2)*[SV*HR*SVR-(1/3)*SBP]

BTW, this should be the formula that BP machine manufacturers should be using to calculate DBP from
SBP holding SV and SVR to predetermined (often inaccurate) constants.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-certified Cardiologist
http:/www.heartmdphd.com/

Cc88m said:

Quoted message said:

BTW, this should be the formula that BP machine manufacturers should be using to calculate DBP
from SBP holding SV and SVR to predetermined (often inaccurate) constants.

I can see a machine doing that, but my cardiologist certainly doesn't -- he gives me the BP
reading w/o even measuring my pulse.

Manual measurements have that luxury.

Quoted message said:

Therefore, I assume that the machine doesn't either;

Your assumption was incorrect.

Quoted message said:

otherwise it is measuring something different from the doctor's.

It is.

Quoted message said:

Besides, flow rate depends on pulse rate to some degree, but no the MEASURED pressure.

By flow rate are you referring to cardiac output (CO)?

Quoted message said:

What gives?

In a word: Physiology.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗

Cc88m said:

Quoted message said:

MAP = SV*HR*SVR

Right; so the measured value already has the HR in it; why multiply it again?

Shows dependency. SV and SVR are pretty much independent of HR.

Quoted message said:

Are you saying that a person with higher HR tends to have a naturally higher BP? I can
understand that.

In that case, an easy way to lower BP is medication that lowers HR -- is that actually done?

Yes, beta blockers do this.

Quoted message said:

Another Q: Would the definition of "high BP" be higher for people with higher HR?

No.

Quoted message said:

Or do those with higher HR tend to have lower SVR?

If MAP is normal, either SVR or SV could be lower with the higher HR.

Humbly,

Andrew

--
Dr. Andrew B. Chung, MD/PhD
Board-Certified Cardiologist
heartmdphd.comheartmdphd.comOpen ↗