Questions tagged [blood]

The liquid that circulates in the arteries and veins of humans and other vertebrate animals, carrying oxygen to and carbon dioxide from the tissues of the body, or an internal bodily fluid that performs a similar function in invertebrates.

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22 views

Why transfused blood has lower 2,3 - BPG levels

I read the following quote in the textbook Kaplan Biochemistry (2018 edition, page 183): Transfused blood has lower than expected 2,3 BPG levels, making it less efficient at delivering oxygen to ...
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Does blood pressure have a daily pattern?

before nothing I am not a doctor, I am a simple programmer that likes to read about medicial sciencies. I've read in this book that the blood pressure it very important; is it really? Then I have ...
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Why do different labs give different reference ranges? [duplicate]

I've seen various result printouts from different labs, and for the same test, they have different reference ranges. For example, I've seen some labs writing that the reference range for blood ...
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What's the primary body entrance + surface of infection for catching the flu?

I realize there are multiple ways, but if you tallied up all the people who caught the flu or a cold last year, what would be the majority... Entrance for infection: Mouth Nose Eyes Ears Skin Bio ...
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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 ...
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How reliable is the determination method of reference ranges for blood tests?

A reference range is usually defined as the set of values 95 percent of the normal population falls within (that is, 95% prediction interval). It is determined by collecting data from vast numbers ...
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Being excluded from blood donation due to using protein supplementation

As in the title, I used another clinic from the ones I usually donate blood. The doctor that was responsible for taking my history in regards to approving me as a donor after the usual questions asked ...
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64 views

Would gargling salt water every day increase sodium absorption levels?

Do you absorb sodium through your gums, mouth and throat when gargling and rinsing salt water? Considering the fact that sublingual medication is a very effective way for introducing substances ...
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78 views

How is blood cleared from the body after internal bleeding

How is blood that flows out of vessels during internal bleeding cleared from the area (by the body, not medical professionals) once the bleeding stops? I am assuming via the lymphatic system; but I've ...
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62 views

How to calculate my “approximate” mortality rate while in ICU?

To make a long story as short as possible for context, I was rushed to the ER while in cardiac arrest back in 2014. Heart stopped beating momentarily and lost oxygen to the part of my brain. None of ...
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60 views

How does Psoriasis change the biochemistry of blood?

I read somewhere that Psoriasis can increase the amount of uric acid in the bloodstream by about 10%, increasing the chance of gout:psoriasis Is this the only biochemical change in the bloodstream ...
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How many valves per distance are common in veins?

Veins have valves to prevent backflow of blood. I am looking for a value the indicates on average how far apart those valves would be. There are valves in most veins to prevent backflow. source ...
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Where are good abdominal places for measuring SO2 and heart rate via reflective pulse oximeter?

I'm trying to develop a belt (wearable device) from which I could measure belly stretch (exhalation, inhalation), heart pulse frequency and blood oxygen saturation data via optical EKG (reflective ...
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How does a blood transfusion directly from one person to another through a line work?

In Person of Interest, Shaw inserts a line into a guy's arm that goes directly into her arm for a blood transfusion. See clip: https://www.youtube.com/watch?v=eYQRa6IYf0A&t=83 What determines the ...
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High lyphocytes count in blood test

What is the lymphocytes counts limit which discriminates a recent infection from a CLL (Chronical Leukaemia Lymphocytosis)?
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Fatal adult-onset blood/vascular disorder

I'd like to know if there's a blood or vascular disease/disorder that fits, or could conceivably fit, all the following criteria, even if only in theory: Present from birth Onset of symptoms, or a ...
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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 ...
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“Blood rushing to the head” during handstands: How is it regulated?

Many people who start practicing handstands or headstands report discomfort in their head, ranging from a mild sense of fullness to "my head is going to explode." The standard response in online ...
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Hormone Definitions and Measurements [closed]

How are human hormones defined in the body and how are they measured? I understand that blood tests can be used to measure the amount of a hormone in the body, but how do we know which hormone ...
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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 ...
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Is lipaemia the same as hyperlipidemia?

I'm translating a Russian text and one of the sentences goes like this: Среди сывороток были образцы с гемолизом и липемией. The serum samples contained samples with hemolysis and lipaemia. I ...
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Why can't we give blood within 8 days after taking an anti-inflammatory?

I'm used to regularly giving my blood and other blood components (plasma and platelets), but I was surprised the other day to see that one should not proceed to the donation if they consumed anti-...
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Can HIV patients get further infected by their own blood?

A person without HIV can get infected with HIV by, blood already infected with the virus entering into their body (for example). Can HIV patients get further infected by the for example ingestion of ...
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59 views

What diseases cause a rapid fall in hemoglobin count? [closed]

Which diseases would be likely to cause a fairly rapid decline in hemoglobin count? In this particular case, hemoglobin count went from 7.6 to 6.4 in 48 hours, despite 2 units of hemoglobin being ...
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After traumatic injury, what are the red “chunks” a victim coughs up? [closed]

Recently, I witnessed a pedestrian-vehicle collision. As I approached, nobody was rendering aid, so I took it upon myself to do so. The man wasn't breathing, so I applied basic first aid by tilting ...
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Mechanism of retrograde propagation of arterial thrombi

Quoting from _Robbins Basic Pathology 9th ed. Thrombi are focally attached to the underlying vascular surface and tend to propagate toward the heart; thus, arterial thrombi grow in a ...
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How do doctors deal with fear of blood?

For me personally it is very hard to watch scenes from movies/documentaries where the surgeon cuts patient's skin. I don't get any discomfort from seeing blood or wounds but it's almost unbearable to ...
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Why do surgeons wear blue aprons during surgeries?

In most cases, the surgeon wears a white apron, but during a surgery he is wearing a blue apron, why blue?
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How much time will take for receiving 1 bag blood?

I want an idea about time spent for taking 1 bag blood. I have a blood donor he will donate 1 bag blood. After taking his blood it will be transferred to a patient. Would anyone provide an idea how ...
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Put a finger in it? When is it appropriate to stop a bleed with your finger?

Can a arterial bleed be stopped by putting your finger/s in it? Like the one in your leg or a place where pressure can't be placed normally?
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ABO blood type mismatch

I have a question about blood types and seeming hereditary contradictions. The above image of an Eldoncard blood test, which shows quite clearly that the testee has AB- type blood. (see image!). The ...
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Difference between Contusion, Haemorrage and Hematoma?

As per wikipedia these are the definitions: A contusion, commonly known as a bruise, is a type of hematoma of tissue[1] in which capillaries and sometimes venules are damaged by trauma, allowing ...
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Do beets dye your blood purple?

I was warned recently that eating beets can cause reddish-purple urine, which got me thinking. Blood is filtered by the kidneys to produce urine, high school biology. So if a meal of beets can dye ...
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What keeps our organs in place?

Do they float iniside our "blood blob inside our body" or they are connected to our muscles ?
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Can the foods you have been eating be detected through blood tests?

I know that things like sodium, cholesterol, and sugar levels can be found in blood (at least I think so.) But what about things like fruits and veggies? Can that be detected through bloodwork? Or ...
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What's the exact value of blood Ph and how is it corrected

what is the exact value of the blood ph, how is it corrected and at what precision ? Has there even been a real time high precision analysis of the blood ph ? where we could see the correction ...
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What happens when a hemophiliac woman gets her period?

If there was a woman who is also a hemophiliac/bleeder, what happens when she gets her period? Does her condition affect said period in any way, and if so, how? Would it be troublesome (more than ...
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Can you die from severing your penis?

I recently saw a very disturbing post history on Reddit about a person with the stump of a penis left, and no testicles, as he severed his penis by shooting it off and castrated himself. He said he ...
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Ischaemia and sensitization

In Acupuncture, Trigger Points and Musculoskeletal Pain (3rd Edition), Baldry asserts the following: "When the Myofascial Trigger Point nociceptor-sensitizing substances bradykinin and prostaglandins ...
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What are the effects of swallowing own blood from nosebleeds?

I've seen people on the internet claim that you shouldn't tilt back your head during nosebleeds, because blood could get into your lungs or stomach. When I asked people I know what they do during ...
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What would you call the following type of injury?

Having fallen onto your hands and knees on asphalt, the top layer of skin is gone from your wrists, and you can see tiny amounts of blood that are not coming out of anywhere in particular (perhaps the ...
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Health benefits from giving blood?

I heard a rumor that there were health benefits from giving blood. (The rumor claimed that doing so would help to "remove unwanted stuff from your bloodstream" so that your body could create fresh ...
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What does the stability of blood test means for patient who have few pains in different parts of the body

What does the stability of a CBC (and all related tests) means for a patient who is not suffering anything besides few ache here or there like in stomach or the back? More generalized, if a blood ...
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Occasional medical tests and imageries

I ouce asked on Quora, why people do not do yearly blood tests and imaging, to prevent getting stage 4 cancers. The answers listed reasons not to do this: It would cost a lot of money (for the ...
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Is it true that I can't consume citric foods while on Warfarin?

I got diagnosed with a blood clot after a knee surgery and now my doctor told me that I need to be taking Warfarin for 3 months. I was talking to one friend of mine, who studied medicine and he said ...
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995 views

Tattoo on person with hepatitis b

Is it ok for a person with hepatitis b to get a tattoo? What are the risks? Will it make the condition worse?
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What is the most advanced non-invasive technology these days for identifying clogged arteries?

What is the most advanced non-invasive technology these days for identifying clogged arteries?
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Opposite Venous Blood pH Readings In Groups Of Patients?

Assume Group A and B are 2,000 people each. If one doctor found that, say, sodium bicarbonate alkalized all venous blood of patients in Group A, but another doctor found that sodium bicarbonate ...
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What do these blood tests mean in general and why do doctors ask for them before taking action?

My doctor ordered some blood tests for me. I would like to understand what each test is for, meaning what information could be gathered from the results. W.B.C. Platelets E.S.R. C.R.P. Alpha feto ...
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How can a bone marrow transplant from a donor of a different blood type not get rejected?

As discussed here, one can change their blood type by getting a bone marrow transplant from a donor with a different blood type. Why would the bone marrow not be rejected, as the body's immune ...