Most Popular
1500 questions
5
votes
1 answer
How does colloid pressure help in maintaining fluid inside blood vessels?
I learned in my physiology course that hydrostatic pressure is the pressure that fluids put on the wall of blood vessels and therefore, the fluid tends to get out of the blood vessel and that makes sense to me.
But when I learned about the colloid…
Yazan Amjad
- 51
- 4
5
votes
1 answer
What does 'No outcome of interest' mean?
I am a stranger to medical sciences and also a foreigner so it is not easy to read medical papers.
Can I ask what 'No outcome of interest' means?
What I tried to figure out was "Is artificial sweetener really bad at our body?".
Whenever I searched…
zzaebok
- 53
- 3
5
votes
1 answer
Can caffeine induce sleepiness instead of wakefulness?
I notice that when having slept for a little bit of time and I am drinking caffeine, I may get instantly alert, but after few minutes after drinking the coffee, I still feel extreme urge to sleep!
Can caffeine be the reason for such a reaction? Is…
sloupioc
- 159
- 3
5
votes
1 answer
Why are COVID nucleic acid tests sometimes reported with non-integer CT values?
I saw a positive COVID test, and the CT value was not reported as an integer value. Instead, it was reported with two decimal point precision. I expected the CT value to be the number of PCR cycles.
I searched many combinations of "PCR", "CT",…
user11235
- 151
- 3
5
votes
1 answer
Does the age of an MRI scanner impact the quality of the scans?
I wonder whether the age of an MRI scanner (or how much it has been used) impact the quality of the scans. I.e., does the quality of the scans deteriorate as an MRI scanner gets older or more used?
A Rogue Ant. found this interesting article talking…
Franck Dernoncourt
- 10,309
- 7
- 40
- 78
5
votes
1 answer
How long on average would a type 1 diabetic survive without insulin injections, given that their remission phase has long since passed?
I've been trying to find information on how long a type 1 diabetic would survive without insulin injections.
Most of the information I've found deals with recently diagnosed patients, who show remarkable signs of remission. Instead, I'm asking…
user24876
5
votes
2 answers
Alternative sources of iodine for radiation emergency
One approach to reduce long-term health effects from a nuclear radiation emergency is to take potassium iodine. The typical dosage is 130 mg daily.
As the need for iodine pills is very rare and their typical shelf life is only 5 to 10 years, many…
jpa
- 201
- 1
- 5
5
votes
0 answers
What causes air bubbles/air glugs when getting blood drawn with a vacutainer system?
As I understand it, the vacutainer system used in modern phlebotomy should never result in air bubbles “glugging” into the vacutainer tube when blood is drawn from a patient.
However, today I learned that it does happen because it happened while my…
RibaldEddie
- 151
- 1
- 4
5
votes
1 answer
Why is there no hepatitis F?
There is hepatitis A, B, C, D, E, and G. Why did they decide to skip F? All I can find online is that there is no hepatitis F virus, but that doesn't explain why there is hepatitis G and not hepatitis F.
TheRealTengri
- 443
- 1
- 4
- 8
5
votes
0 answers
Donating blood despite having a foreign-born sexual partner in Germany?
Is having a foreign-born sexual partner automatically a hard barrier where a doctor at a blood donation center has to send a potential donor away in Germany? Or is there some leeway in decision-making, depending on factors like:
Where the sexual…
gurkensalat
- 51
- 3
5
votes
1 answer
What causes a gravelly voice in young children?
Why would an (otherwise healthy) young boy have a permanently gravelly voice for his whole life?
Both this article from a prominent children's hospital mention a wide variety of causes. Another less formal article, but also from a highly reputable…
Bohemian
- 153
- 1
- 6
5
votes
1 answer
What is the best time in a whole day for doing daily exercise like stretching, jogging, walking, cycling or swimming?
Is it more helpful to doing exercise in morning than evening? Or it doesn't matter when we do exercise in a whole day?
As far as I know, doing exercise immediately after meal is not a good idea but we can take a little walk after meal.
Up to what…
KTPATEL
- 209
- 1
- 5
5
votes
0 answers
Blood tests for borrelia and their informative value
Disclaimer:
I am here as a highly medically interested person looking
for an explanation of an observed phenomenon, not for medical advice,
as it is not about my person.
I work in a diagnostic laboratory and have seen several blood tests where a…
Sam
- 51
- 2
5
votes
1 answer
Why does L-DOPA cause hypotension?
L-DOPA is administered in Parkinson's Disease as a prodrug to dopamine which it is converted to in the central nervous system.
However Dopamine is used as a vasopressor, and L-DOPA is associated with hypotension.
How does this work? I speculate that…
Brian Ó Maoláin
- 410
- 3
- 13
5
votes
2 answers
Ritalin/Concerta/Methylphenidate is an amphetamine?
FIDE (the governing body of international chess competition) says here:
The most relevant banned substances for chess are:
• Amphetamines – e.g. Adderall, Ritalin
(...)
Image:
I think either Ritalin should be in a separate category called…
BCLC
- 445
- 1
- 6
- 18