h a l f b a k e r yRecalculations place it at 0.4999.
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The number of people suffering from high blood pressure has
recently leapt upwards, largely because "high" has been
redefined to mean "anything above the average". To date,
the
main weapons against high blood pressure have been diet,
exercise, being young, being dead and drugs - all of which
have their drawbacks.
Clearly, it's time for engineers to get involved. Any
engineer
would look at the circulation as a closed circuit with limited
compliance and a recirculating pump. The first thing they'd
say is "pressure relief valve". Actually, if they were polite,
the
first thing they'd say is "good morning", but people go into
engineering in order to avoid the social graces.
MaxCo has gone down the engineering route, and is proud to
introduce its implantable blood pressure relief valve. The
iBPRV is remarkably simple (which should not be construed
as
"cheap"), consisting as it does simply of teflon valve with a
damped spring on it, which is sewn into the wall of any large
blood vessel near the intestines. Transient overpressure is
insufficient to open the valve (thanks to the damping), but
sustained overpressure will cause the valve to open
proportionally, venting blood into the exit tube which, in
turn,
feeds into the intestines. As a consequent result, excess
blood
is lost until the overpressure is eliminated. Nutrients in the
blood (for instance, all that iron and protein) are recaptured
by the intestine.
The deluxe version features an additional outlet tube,
connected to a transparent latex balloon just under the skin.
When blood is venting, a small amount of it flows into the
balloon, creating a large red indicator circle which is visible
through the skin, informing the patient that their iBPRV is
performing its function.
Job done. Pass the salt, please.
Flow coefficient
https://en.wikipedi...ki/Flow_coefficient
[Inyuki, Oct 12 2018]
Or, you know, one of these
https://goo.gl/images/HVEZzK
(You’d have to eat it afterwards, of course, to completely fit this idea. Maybe if you sautéed it first?) [DrCurry, Oct 13 2018]
Vegetarian_20Black_20Pudding
yours aye, hippo's outsourced shameless self promoter [calum, Oct 17 2018]
Blood Pressure During Exercise
https://www.ncbi.nl....gov/pubmed/2632751
[bs0u0155, Oct 18 2018]
Modest Resistance Training
https://www.youtube...watch?v=T9Y4o_BqC0A
[bs0u0155, Oct 18 2018]
Are you suffering from irritable Trum syndrome?
https://hopefulvolu...rritable-trump.html
[spidermother, Oct 14 2020]
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Annotation:
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Wait. This assumes that elevated blood pressure is due to
overproduction of blood. Aren't there other reasons for higher blood
pressure? Very politely, passes the salt over to another participant. :) |
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No, it assumes no such thing. It simply assumes that removing
liquid from a closed system will lower the pressure. |
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I suppose higher blood pressure might be a result of flow rate. If the
blood is too thick, or the vessels too narrow due to vasoconstriction,
the
heart pumps stronger to compensate for the reduced flow rate. I
would
look into reducing the associated flow coefficient [link]. |
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Of course, removing liquid from a closed system will affect the
pressure. I guess, it would make the heart beat slower (due to slower
fill up of its compartments), and make one light-headed (due to
reduced flow through head), and the pressure difference larger
(between the fluid incoming to heart, and outgoing), and also, higher
pressure difference between incoming and outgoing blood from all
the organs with reduced flow rate. |
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So we are back to bleeding the patient again, eh? |
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Worked for 1200 years, [Doc]. |
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Well, it happened for a long time, I'll grant you. |
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Blood pressure is a compounded effect of the volume of
blood a heart pumps (cardiac output) and the end pressure
of capillary resistance (oncotic pressure). Chemical changes
in red blood cells that make each one pop slightly larger as
they give up oxygen, so nanotech may allow a microvalve to
migrate to every blood capillary lumen so blood pressure
drops as lymphatic pressure allows. The idea of one large
valve might reduce afterload and ease one major artery's
resistance to cardiac output, but a better idea would be a
third kidney. |
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I wonder, would this be of any help to provide oxygen and take away
byproducts without blood circulation at all, like from the 4th spatial
dimension, where every 3D object looks flat and accessible? |
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Could you not set it up more like a hot gas bypass on
a refigerent system and vent high pressure from an
out artery to and in artery you don't lose blood just
pressure? |
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[dev], if you'd like to join MaxCo's Scientific Inadvisory Board,
there's a place waiting for you. |
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[max] Sounds better then the job I have. |
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Simple application of Bernoulli's principle implies that to reduce the pressure we need to increase the velocity. One path to achieving this would be the ejection of the patient from an aerial vehicle at great height. The effects may only be temporary, however. |
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Depends if the parachute opens. |
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// "high" has been redefined to mean "anything above the average". // |
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So, 50% of the population... ? |
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// To date, the main weapons against high blood pressure have been diet, exercise, being young, being dead and drugs // |
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"Our principal weapon is diet ... diet and exercise ... our two principle weapons are diet and exercise and being young ... our three principal weapons are diet, exercise , being young and being dead ... our FOUR principal weapons are diet, exercise , being young and being dead, and drugs ... oh forget it, I'll come in again." |
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Will being put in a comfy chair and prodded with soft cushions tend to reduce blood pressure ? |
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That depends on if the one doing the prodding is a
drunken frat boy who will one day be judge... |
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[8 of 7] If it's young women priding male with pillows
blood pressure tends to clime Vs drop |
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//"high" has been redefined to mean "anything above the average".//
so my doc can't diagnose me as hypertensive unless he's taken the
BP of everyone else (or at least a representative sample thereof)
within the last news cycle? |
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I could probably get a bunch of people into that warning range just
by saying that my BP is currently about 2.4 psi over 1.6 psi. |
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Why divert excess blood into the intestines? - surely the sensible thing to do would be to drain it off into a colostomy-bag-style pouch, for later conversion into delicious black pudding? |
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Blood pressure, funny old thing. Medicine is a little
obsessed with it. Probably because it looks quite doctory
and is a good way for the higher-ups to ensure someone
occasionally looks in on the smelly patients. |
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Anyhow, this valve is all wrong. Resting blood pressure is
quite low, as soon as you do anything like walk a bit,
climb a step or deadlift half a ton, blood pressure raises
really quite a lot. 350/250 has been seen in squats <link>
and god knows what was going on inside Eddie Hall when
his nose and retina started leaking <link>. |
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Would not the indicator be a constant personal above average? |
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I think this would make the heart work harder because the increased pressure was trying to do something. Venting blood would make that something done even less. Blood thinners help the heart do the pressure more easily. |
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[dev45] The living body is field evolved, the downstream system is not necessarily the same as the upstream system unlike the piping in a fridge. Or am I wrong and refridgeration piping design has got that complex that the pressure specs change along the pipe flow? |
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Again, I believe it is wrong to lower the pressure unless the underlying reason is controlled. On second thoughts, an exception is if it is off the scale then only speed of action matters. |
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I installed a Trump blocking filter on my browser about
a year ago. Done wonders for my blood pressure,
sanity etc. |
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Version 1.0 of this valve appeared briefly in the movie
Dune from 1984, IIRC. Once activated, it effectively
lowered the owner's blood pressure, completely. They
were quite the hit. |
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