Questions tagged [blood-circulation]

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How does blood flow change between systolic and diastolic phases?

Summary What is the change in flow between systolic and diastolic phases specifically in the muscular arteries? There is a lot of information on how pressure changes between these phases (see graph) ...
Luke Hamilton's user avatar
26 votes
1 answer
6k views

Why are iron levels different in the left and right hands?

Yesterday I donated blood. When the nurse performed a finger prick test of iron using my left hand, she indicated that the level was too low. However, she then asked to perform the test again on my ...
Peter Flom's user avatar
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Varying Max/Min Behaviour for Electronic Blood Pressure Cuffs

Suppose an electronic blood pressure cuff (automated sphygmomanometer) attempts to measure a patient’s blood pressure. Consider the following scenarios: The blood pressure cuff inflates to a reading ...
PlagueHuntR's user avatar
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Can bloodstreams be interconnected?

Novice question. Say we have a mother and child with known exactly matching blood types. The mother suffers from a bad liver and a bacteria infection in the lung along with antibiotics is causing her ...
Daniel Schlaug's user avatar
2 votes
0 answers
21 views

Is an increase in blood pressure all that you need to increase connective tissue blood flow?

An answer to the question Does chronic caffeine use increase or decrease blood flow to connective tissue? Talks only of blood pressure (BP) values when answering the question, which to me is strange, ...
Chris Rogers's user avatar
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Does chronic caffeine use increase or decrease blood flow to connective tissue?

In the short term, the effects of caffeine are well studied both as a vasodilator and vasoconstrictor, but given that chronic use produces specific adaptations, is the long term effect of caffeine use ...
Alt-Cat's user avatar
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1 answer
91 views

Why is heparin contraindicated in patients with severe hypertension?

Heparin is a parenteral anti coagulant- prevents clot formation by inhibiting factors 2 a and 10 a mainly. Now, patients with severe uncontrolled hypertension- have persistent bp of more than 140/90. ...
Kavya Chandrasekaran's user avatar
2 votes
0 answers
139 views

Can hemophilia be advantageous when the blood circulation is stopped?

First of all, I'm a computer engineer and I have nothing to do with Medical Sciences so this question might sound ridiculous. I found a book( Hall, J. E. 1. (2016). Guyton and Hall textbook of medical ...
patoglu's user avatar
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1 answer
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How do I measure my resting heart rate?

I measured my sitting down, relaxed, not moving heart rate, which is around 65-80BPM. If I do the same measurement laying down, it's anywhere from 50-65BPM. While asleep, it dips into the 40s. The ...
eddiewastaken's user avatar
5 votes
1 answer
91 views

Bradyarrhythmia & Bradycardia- same or different?

Do Bradyarrhythmia & Bradycardia denote same abnormality or are there some finer differences between the two?? In text provided by my college, it appears bradycardia condition comes under the ...
Pearl Dua's user avatar
1 vote
1 answer
166 views

The state of glucose in the blood

I have a simple question regarding glucose and the blood, for which I have not been able to find a satisfactory answer through some independent research through Google. How is the glucose in the blood ...
inquiries's user avatar
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1 answer
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Post oximetry PLETH waveform and ABP waveform similarities

As a beginner in medical sciences I found a fact that was seemingly interesting to me. When I was doing some simulations with patient monitors and advanced cardiac life support cases, I found that the ...
Andrew Yu's user avatar
1 vote
1 answer
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Does erythrocyte aggregation serve a useful function?

Wikipedia states that erythrocyte aggregation causes disease: Conversely, the presence of rouleaux is a cause of disease because it will restrict the flow of blood throughout the body because ...
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2 votes
0 answers
203 views

Is leg "falling asleep" (e.g. during meditation) dangerous?

During meditation sits of 30 to 60 minutes, it is common for one or other leg to "fall asleep" after maybe 15 to 20 minutes. Is a leg being "asleep" for between 10 and 45 minutes dangerous? Is it ...
samfrances's user avatar
4 votes
0 answers
84 views

What are safe vasodilators to help prevent chilblains?

Chilblains - Wikipedia are typically caused by too rapid heating of cold toes, whether induced by environmental cold or by poor circulation. Cold feet put into warm water can feel painful, like they ...
Ray Butterworth's user avatar
3 votes
0 answers
94 views

Does taking cold showers put one in risk of a potentially fatal cold shock?

Taking cold showers is being recommended here and in many other places (Healthline, MedicalNewsToday, MSN to name just few) in the Internet. However, I've heard a strong contrary opinion from a ...
gaazkam's user avatar
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3 votes
2 answers
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Crystalloid infusion during anaphylactic shock

My text book states that intravenous crystalloid infusion is a method of treating anaphylactic shock. I can't get why, as there is no fluid loss in case of anaphylactic shock, at least that is what ...
Asmaa's user avatar
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2 votes
0 answers
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What is the expected life span of vascular stents?

What is the expected life span of vascular stents? For example: Universal (coronary/venous) stent WALLSTENT-UNI Boston Scientific, metal: nitinol = titanium + nickel. How many pulsating contractions ...
Alex's user avatar
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0 answers
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Can blood flow destroy part of the metal stent in 10 to 40 years?

If a part of the metal stent has not grown into a vessel, can this part of the stent be washed out by the blood flow in 10 to 40 years (theoretically)? Also are such cases known that blood flow ...
Alex's user avatar
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0 answers
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What causes external lower leg to visibly pulse?

I wonder what causes the lower leg(fibula side) to pulse visibly for few minutes after exercising/walking etc. If the pulse is synchronised with the hearth rate, is it more likely to be a vein or an ...
blu potatos's user avatar
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0 answers
56 views

Can any external stents (or something like this) be used to solve aorto-venous conflict (May-Thurner syndrome)?

Is there can be used any external stents or something like this to solve aorto-venous conflict (May-Thurner syndrome) or Nutcracker syndrome? For example, a stent consisting of ...
Alex's user avatar
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3 votes
0 answers
80 views

Must one take anticoagulants lifelong after stenting of deep veins with a non-thrombotic lesion?

Must one take anticoagulants lifelong after stenting of deep veins with a non-thrombotic lesion, for example, aorto-venous conflict (May-Thurner syndrome)? Or is it enough to take anticoagulants only ...
Alex's user avatar
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1 vote
1 answer
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At what speed would an average adult human male bleed out, if their arm was amputated?

I'm not sure what unit of measurement to ask this question in, but I suppose that pints per second would be the right way to think of things. Currently writing a short story and i'd like to add some ...
Adam's user avatar
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4 votes
1 answer
104 views

Surgery of the hemorrhoid or other veins

I got curious what really happens to the cut blood vessels after they were operated on at an arbitrary point... and how the blood circulation remains consistent(, especially if the blood vessel is a ...
Boldizsar Major's user avatar
0 votes
1 answer
49 views

How does the circulatory system know where to distribute oxygen and nutrients?

There is lots of information online about the circulatory system, but it never seems to answer the question of "targeting". When there is a change in the relative demand for blood, how does the ...
Christian Oudard's user avatar
8 votes
1 answer
289 views

Ultrasound sniff test: why does lowering intrathoracic pressure collapse the subclavian vein?

Because the subclavian is guarded by the clavicle, you can't compress it with the transducer, and to see the vessel walls come together it is common practice to tell the patient to "sniff" or inhale ...
user15038's user avatar
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5 votes
1 answer
60 views

Do shin injuries heal slower than similar injuries on other parts of the body?

Do common injuries, such as scrapes and bruises, heal up slower on your shins? It seems as though there would be less blood flow through shins than, say, the upper arm (which is more "meaty").
CreatedByBrett's user avatar
8 votes
3 answers
329 views

What ingredients in this list are causing my hands to get warm? (improve circulation to my fingers) [closed]

EDIT: scroll down towards the bottom towards the bottom for my answer. Its thoracic outlet syndrome. If I do certain stretches it goes away. Its an issue related to my bad posture and nerves getting ...
Hercslure's user avatar
1 vote
0 answers
63 views

Do percussive massages help treating a tendinopathy?

I read on http://fortitudesportstherapy.com/percussive-therapy/ (mirror): What is Percussive Massage? Percussive massage is a breakthrough treatment for soft tissue pain. Percussive massage ...
Franck Dernoncourt's user avatar
3 votes
1 answer
132 views

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

For conditions such as POTS (Postural orthostatic tachycardia syndrome) which are unable to regulate appropriate blood pressure / HR on postural changes, they are treated with volume expansion - like ...
Josh's user avatar
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5 votes
1 answer
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Can very tight glasses restrict blood flow to the brain?

Can extended use of glasses that are very tight-pressing against the temples inhibit blood circulation towards the brain? I find that I get headaches if I wear tight glasses, and found a similar ...
Ramy Al Zuhouri's user avatar
1 vote
0 answers
14 views

Does aerobic exercises increase the blood around the tendons that attach to the epicondyles at the elbow end of the humerus?

http://www.livestrong.com/article/315152-how-to-increase-tendon-strength/ (mirror): Increase circulation throughout your body to improve the blood flow to your tendons. Part of the problem with ...
Franck Dernoncourt's user avatar
5 votes
1 answer
107 views

Dealing with a lot of standing

Question When e.g. working in surgery, one has to stand for a very long time. I'm sure everyone has been through a similar experience. After some time, my back usually starts to feel weird and I ...
Narusan's user avatar
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2 votes
0 answers
141 views

Why does high blood pressure cause tinnitus?

There are multiple reports on the internet where people state that they got tinnitus from high blood pressure. Usually it is related to exertion or having an orgasm. Just wondering if anyone has t ...
MeltingPoint's user avatar
0 votes
1 answer
712 views

Why is this clinical difference between central and peripheral hemoglobincyanosis?

While in central cyanosis we see cyanotic mucosae, we have in peripheral cyanosis a cyanotic peripheral. In central cyanosis we have a oxygenation problem and in peripheral cyanosis a low perfusion. ...
rwx's user avatar
  • 156
2 votes
1 answer
1k views

How long does it take for a body to get rid of blood clots and bubbles inside a cannula?

The blood clots and the small bubbles that are stuck inside my cannula enters my body. I asked a doctor and he said its OK if the bubbles are small and clots are not dangerous. Are these bubbles and ...
user2824371's user avatar
5 votes
1 answer
1k views

What are the health benefits of cold showers?

Apart from the increased circulation and sperm production (in men) what long term and short term benefits can you get with a cold shower every day? To clarify, short term effects such as immediate ...
user avatar
2 votes
0 answers
14 views

Why cold on the back hurts more than cold in the front?

I'd rather have appended this to the health group, but I guess the biology se was better for this. The question is, why is it that the cold, on the back, hurts, whereas the cold on the front, arms, ...
Jack Maddington's user avatar
1 vote
1 answer
678 views

Tourniquet application on a venous bleed

A few weeks ago in class (EMT), we were discussing tourniquet application in instances where there is bleeding that couldn't be controlled by pressure. In most cases, a tourniquet will be used on a ...
L.B.'s user avatar
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2 votes
0 answers
44 views

If compression socks increases the blood circulation and this is good for swelling, then how comes it is said ice is good for swelling?

“Cold slows down blood flow to an injury, thereby reducing pain and swelling. Cold therapy slows circulation. It should be used if the area is swollen or bruised.” “Compression stockings are used to ...
user10321's user avatar
1 vote
0 answers
20 views

Are there any long-term health benefits/ disadvantages of wearing socks, especially woolies?

Are there any long-term health benefits/ disadvantages of wearing socks, especially woolies ?
user7094's user avatar
3 votes
1 answer
846 views

Can pectus excavatum increase the risk of cardio vascular disease?

With Pectus Excavatum the sternum is sunken inwards pushing organs slightly out of their normal position. My question is could this repositioning put additional pressure on the heart over time leading ...
David Saunders's user avatar
0 votes
1 answer
411 views

Does Anemia equal poor circulation?

Are they one and the same? Can you be non-anemic and have poor circulation? Can you have good circulation and be anemic at the same time?
larry909's user avatar
  • 481
3 votes
1 answer
386 views

How to get rid of erectile dysfunction?

Erection problems happen mostly with men. What causes it and what is happening in the body?
user5284's user avatar
2 votes
1 answer
86 views

How do apps that measure heart rate work? Are they precise?

First of all I don't know if this should be split in two different questions or not. Lately I've been using an app to measure my heart rate using my phone. In the few that I've tried they only say ...
S -'s user avatar
  • 285
3 votes
2 answers
157 views

Is there no drawback on removing varicose veins?

If we remove our varicose veins because they are useless, would we get any drawbacks by removing them? For example, we might need to remove rest of them next time. Wouldn't it be a problem for us if ...
user avatar
3 votes
0 answers
63 views

Applying ice to tendinopathy: how long should the icing and non-icing periods last?

When applying ice to a tendinopathy, how long should the icing and non-icing periods last? I am looking for scientific studies. http://www.uhs.wisc.edu/health-topics/muscles-and-bone/rice.shtml says: ...
Franck Dernoncourt's user avatar
3 votes
0 answers
27 views

Is increased blood flow always correlated with increased cerebral activity?

I've heard that cerebral fMRI (Functional magnetic resonance imaging) maps blood flow through the brain, and it is most of the time correlated with cerebral activity. What are the factors that can ...
Magix's user avatar
  • 131
2 votes
2 answers
145 views

Extreme bleeding - what shuts down first?

Considering an accident that results in heavy bleeding (say legs are crushed), but no internal damage to the brain or torso, what would stop first: the brain or the heart? Is there an order to organ ...
Sophie Proud's user avatar
6 votes
1 answer
120 views

Standing up while deeply inhaling can cause a blood pressure fall?

Someone told me a few months ago of a technique to stop hiccups. When I followed the simple instructions given to me at that time it was extremely effective. Recently, I tried to reproduce the ...
Armfoot's user avatar
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