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10 votes
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Can the blood accumulated after stroke be cured?

First of all, I am going to stay quite “general” as I understand you are not from the field. The aim of my post is really to provide some clarifications to your question. There are two types of ...
M. Arrowsmith's user avatar
9 votes

Area unit for mmHg pressure

My physics is a bit rusty, but the equation for pressure of a liquid is p = ρgh where rho is the density, g is the local gravity and h is the height of the column of liquid. As you can see from this ...
Narusan's user avatar
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8 votes
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If sphygmomanometer literally cuts off the blood flow, is it gonna kill the patient if pressure is not released?

Heart attacks are caused by reduced or blocked blood flow to the heart, but a sphygmonanometer cuts off the blood flow to the arm (or leg) only. It's not possible it could cause a heart attack ...
Carey Gregory's user avatar
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7 votes
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How does a blood transfusion directly from one person to another through a line work?

Direct blood transfusion is both dangerous for the donor and inconvenient in a modern medical setting, so this does not really happen today outside of movies/TV. Before blood banking and ...
Bryan Krause's user avatar
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6 votes
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What is the blood pressure within the right ventricle?

Like the left ventricle, the right ventricle goes through a contractile cycle: at diastole, the pressure is near zero (and must be <0 relative to the right atrium, or it wouldn't fill with blood); ...
Bryan Krause's user avatar
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6 votes
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Looking for studies about how blood pressure changes are perceived by our brain

This study published in 2014 provides an excellent review of the physiological mechanisms of cerebral blood flow regulation (open access): Willie CK et al. Integrative regulation of human brain blood ...
M. Arrowsmith's user avatar
6 votes

Area unit for mmHg pressure

As per Narusan's answer, it's an artifact of the method of measurement from using a column of mercury in a curved vacuum tube. Equivalent of 7.50062 mm of mercury is 1 kPa, or 0.150 psi or 10 ...
Jiminy Cricket.'s user avatar
5 votes
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Is it a good idea to replace Sodium Chloride (NaCl) with Potassium Chloride (KCl) for everyday consumption?

From the context of your question I would say no. Increasing K+ intake is alright but completely eliminating Na+ from the diet would be a bad idea. In terms of the cardiovascular diseases like high ...
user 33690's user avatar
5 votes

Passing out after injections

Fainting due to vaccination occurs only occasionally, your immune system usually takes longer to react to viruses or bacteria (this is the incubation time of an illness). 1 hour is a very unusual ...
Narusan's user avatar
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5 votes
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Wrist Blood Pressure Monitor Accuracy?

Take both to your doctor's office the next time and compare them to the manual cuff. There are many models that can be calibrated that way. Not all models are as accurate as others. This article ...
DoctorWhom's user avatar
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5 votes

How can blood pressure be high but my pulse low?

If that is the accurate pressure, you really need to go to the emergency room! 188 is high but not immediately dangerous, but 134 for a diastolic is outrageous. At very least go to an urgent care or ...
quietmedic's user avatar
5 votes
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Why does caffeine raise your blood pressure when it's a diuretic?

Caffeine increased plasma renin activity by 57 per cent, plasma norepinephrine by 75 per cent and plasma epinephrine by 207 per cent. Urinary normetanephrine and metanephrine were increased 52 per ...
Graham Chiu's user avatar
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5 votes
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Taking Blood Pressure Bilaterally -- Why?

Because that's the way to measure blood pressure The German guidelines for treating hypertonia are to always measure bilateral. (German Source Only) As @DoctorWhom pointed out in the comments, ...
Narusan's user avatar
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4 votes

At what point would blood loss impede the ability to achieve an erection?

Erections aren't binary, they have a gradient of turgidity; but going by your statement "completely impossible," then I will assume that for your novel you want to understand what would prevent any ...
DoctorWhom's user avatar
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4 votes
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How soon will a person die if they are hung upside down?

This is an interesting research question from both pathophysiological and historical perspectives: "Upside-down death - the pathophysiology of inversion." Kirsty Andrews. Pathology. 2014. ...
Bruce Kirkpatrick's user avatar
4 votes
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Are "Wrist" blood pressure monitors less accurate then Upper arm?

Yes, they are less accurate. Mayo Clinic is generally held to be a credible source and in the link you provided they have this to say about wrist monitors: Some wrist blood pressure monitors may ...
Carey Gregory's user avatar
  • 9,893
4 votes
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Is there a term for a blood pressure level that is too high but which is typical for the patient and causes no symptoms?

There is a historical and obsolete term in English called Benign hypertension. According to the History of hypertension article in Wikipedia: ... hypertension was often classified into "...
Don_S's user avatar
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4 votes

Does blood pressure continue through the diastole phase if the blood pressure cuff pressure is not released sufficiently?

There are multiple ways to get erroneous blood pressure readings. Getting an accurate blood pressure is sometimes tricky. ...is there a considerable store of blood waiting to be released behind the ...
anongoodnurse's user avatar
3 votes
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cardiac arrest effects on blood pressure

By definition, cardiac arrest means the heart is not pumping blood; therefore, there is no blood pressure. None at all. So if you were to cut a person in cardiac arrest, they would not bleed. If a ...
Carey Gregory's user avatar
  • 9,893
3 votes

Which vessel could a pumping vessel in the left middle side of forehead be?

Map of the superficial arteries (the arteries close beneath the skin), taken from ClinicalGate, which I believe they have taken from Gray's Anatomy for Students Map of the deeper arteries, ibid I'm ...
Narusan's user avatar
  • 6,921
3 votes

Can a colloid intravascular volume expander be used in chronic orthostatic hypotension?

Albumin is expensive and potentially dangerous, colloids have never been shown to be better than crystalloids, and there is no good evidence for their effective use in orthostatic hypotension. ...
Graham Chiu's user avatar
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3 votes
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Does ideal range pulse rate and blood pressure always indicate no serious illness

Absolutely, uniquiviquly, NO you can not assume that if you have normal blood pressure and pulse range that you are otherwise healthy. Periodic physical exams are recommend for all persons, even if ...
Atl LED's user avatar
  • 1,973
3 votes

Antihypertensive as a treatment for Tourette's. (And Antihypotensive to make blood pressure normal?)

Following paper Tourette’s Disorder. Lyon, G.J., Shprecher, D., Coffey, B. et al. Curr Treat Options Neurol (2010) 12: 274. doi:10.1007/s11940-010-0073-x provides a good (somehow recent) review on ...
M. Arrowsmith's user avatar
3 votes
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Can one have high and low blood pressure at the same time?

Unusual differences between systolic and diastolic pressure may speak for an underlying condition and may be a risk factor for further complications, but can be sometimes normal, for example, in some ...
Jan's user avatar
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3 votes

Crystalloid infusion during anaphylactic shock

Your assumption that there is no fluid loss is wrong. In addition to the vasodilation Jan mentioned in his answer, there's significant fluid loss caused by increased permeability of the vasculature. ...
Carey Gregory's user avatar
  • 9,893
3 votes
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How can I take blood pressure into the cardiac output formula?

For calculation of Bp and CO, Bp = CO * TPR CO = SV * HR Where tpr is total peripheral resistance, HR is heart rate(bpm), SV is stroke volume SV = End diastolic vol - end systolic vol Now, there ...
Physicsapproval's user avatar
3 votes
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Can I calculate the blood pressure and pulse based on a given blood loss

Rough Calculations Here you can find an example of what you are looking for. Hemorrhagic shock is a condition of reduced tissue perfusion, resulting in inadequate blood oxygen and nutrients levels ...
Andrew's user avatar
  • 382
3 votes

How is blood pressure monitored during surgery?

Monitoring of patient blood pressure is vital because anesthesia and surgery can cause rapid changes in vital functions. Even brief periods of hypotension are associated with poor post-operative ...
Ian Campbell's user avatar
  • 3,256
3 votes

How does blood flow change between systolic and diastolic phases?

Flow is roughly constant once you get past the arterioles. You can see that on the figure you provided, no other source is needed: there's no pulsatile pressure there, just constant pressure ...
Bryan Krause's user avatar
  • 14.1k
3 votes

How does blood flow change between systolic and diastolic phases?

General relative flow velocity in different vessel types I found a nice image here which gives a general idea of several haemodynamic parameters over different vessel types: Thus, this source says ...
Philip Klöcking's user avatar

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