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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Being excluded from blood donation due to using protein supplementation

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 me if I use ...
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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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Can GFR be improved in patients with kidney failure?

How widely can glomerular filtration rate (GFR) values fluctuate and can they ever improve? How much "error" might one expect in the value if sampled quarterly?
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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 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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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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Is low immature reticulocyte fraction after an acute hemolytic crisis normal?

All following data are theoretical and not real: A patient had a hemolytic crisis without anemia proven by elevated reticulocytes, elevated unconjugated bilirubin and normal hemoglobin and erythrocyte ...
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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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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 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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Does neovascularization help or hinder healing in a tendinopathy?

Many studies have shown that tendinopathies often come with neovascularization in the injured area. Does neovascularization help or hinder healing in a tendinopathy? From http://inside.akronchildrens....
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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 ...
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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. ...
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Why is 88% SpO2 considered a critical level?

If I understand correctly, arterial blood is usually saturated to ~95% with oxygen, the oxygen being transported in combination with haemoglobin in a ratio of 4:1. Venous blood is saturated at around ...
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Hyphema type that doesn't pool?

I'm gonna be honest here, I'm writing a story where a guy has the classical evil red eyes you can find everywhere, and I want to base it in science. I've thought about posting this on worldbuilding, ...
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Why is there a difference between venous bicarbonate and bicarbonate in ABG?

Lets say a serum blood test shows bicarbonate of 20mmol/l but an ABG of 15mmol/l, both tests taken 3 minutes apart in a person with acute metabolic acidosis with compensation. Can anyone explain why ...
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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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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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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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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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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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I think I just coughed a little blood, have been dry coughing for 2-3 days. What should I do?

This is what my cough looks like, verify blood :( https://ibb.co/gD6Otv https://ibb.co/hE4nLa
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Plausibility of 30 gauge draw?

What are the risks, complications, and problems associated with using a 30 gauge needle to draw blood from someone with otherwise average veins? What is the certainty of hemolysis and would it be even ...
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What are the effects of sipping blood?

Since childhood, I've noticed that when most people get injured they tend to sip the blood from where they got injured claiming that they are doing so, so as not to waste the blood, and furthermore ...
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How can I improve my chances of a successful platelet donation?

I have a high platelet count and would love to put that to good use by donating platelets. But the last several times I've tried to give, my veins failed one way or another. The volunteers couldn't ...
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How can I cover up bruises?

I have recently had a few bruises to my leg, one quite bad, I was just wondering is there any way of covering the bruises up? If so, how? What methods could I use?
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What does thick blood indicate?

I today got a cut on my finger and I saw my blood was thick and sticky. It took less than 1 second to dry and clot as I rubbed it on my finger. Is thick blood bad for your health?
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Omics vs Classic Blood Sample

It seems to me that omics data offers much more information than a classic biochemical blood analysis does. Are there more features that can be known from a patient blood sample using omics data in ...
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Can a person with thrombocytopenia marry a thalassemia carrier?

Can a person with thrombocytopenia marry a thalassemia carrier? Will there be any effect to the child? For example a thalassemia carrier and his partner who is under medication of thrombocytopenia, ...
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percentage volume of vascular tissue in transtibial residuum

I'm a mechanics researcher and I'm working on modeling transtibial residual tissue for designing (hopefully) better prothesis. One of the challenges of this topic is to account for the influence of ...
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Does Water Affect Aggregation/Clumping of Red Blood Cells?

I am developing a laboratory experiment that involves looking at human blood under a microscope. In particular, I will be looking at how the red blood cells aggregate or clump when a human subject is ...
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In what direction do the usual "warning factors" affect SpO2 measurements?

Perusing the manual of my home-use pulse oximeter it has the usual warnings easily found elsewhere on factors that may affect accuracy, but these are indicated qualitatively from "anemias" ...
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Is uric acid processed/removed differently than other acids?

It is my understanding that uric acid is a byproduct of the body breaking down certain proteins, and if the body can not get rid of this acid fast enough it can lead to gout and other complications. ...
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Is there a mathematical relationship between total blood volume and cardiac output / stroke volume?

I'm looking into the body's response to traumatic hypovolemia, and I was wondering if there exists a mathematical relationship between total blood volume (TBV) and stroke volume (SV). All of the ...
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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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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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Lab test for Pregnancy, Not Clearly listed?

Can anyone list the Laboratory Test that are prescribed in the picture?(It's for a pregnancy in week 28+1).