Samme

@sammahens

Enigmatic.

Iscritto a settembre 2016

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  1. ha ritwittato
    6 giu

    10/ Here's one other fascinating read, though it does involve bleeding kittens...

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  2. ha ritwittato
    6 giu

    9/ If you're interested in reading more about the pathophysiologic response to acute blood loss (there is more!), I highly suggest: 1. Arch Surg 1981;116:1344-1353 - awesome read () 2.

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  3. ha ritwittato
    6 giu

    8/ When a patient has a decrease in capillary pressure, the Starling Equation suggests that fluid will move from the interstitial space into the vascular space. This, finally, is what leads to anemia. The plasma is "diluted" by fluid shifting from the interstitium.

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  4. ha ritwittato
    6 giu

    7/ Why would fluid shift from the interstitium? Baroreceptors sense a drop in arterial and venous pressure leading to an increase in sympathetic tone. This increase in tone leads to arteriolar vasoconstriction leading to decreased capillary pressure.

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  5. ha ritwittato
    6 giu

    6/ To understand why, think about what causes fluid to move out of a cell: an increase in ECF concentration. When you bleed whole blood, the ECF concentration does not change. There is no reason for fluid to move out of cells. Instead, the fluid comes from the interstitium.

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  6. ha ritwittato
    6 giu

    5/ The shift can't be from the intravascular space because that's where we're hoping to shift fluid into. It isn't the intracellular space either...

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  7. ha ritwittato
    6 giu

    4/ The hemoglobin should be unchanged. They just bled blood that has the same concentration as what was left behind. But they do become anemic, eventually. Why? Let's assume they aren't given liters of IVF. So, it there must be a fluid shift. Where does the fluid shift from?

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  8. ha ritwittato
    6 giu

    3/ When someone bleeds, they bleed whole blood. The blood that is lost has the same concentration (hemoglobin) as the blood that is left behind (i.e., the blood that's still in the patient). So, if you check a hemoglobin 5 minutes after a massive hemorrhage, what will you find?

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  9. ha ritwittato
    6 giu

    2/ First, it's important to remember that hemoglobin is a concentration (grams per deciliter).

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  10. ha ritwittato
    6 giu

    1/ Why do patients with acute hemorrhage become anemic? I've spent way too much time recently thinking about this question. The explanation may seem obvious (if someone losses blood, they become anemic from, well, blood loss!), but the mechanism is far more interesting...

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  11. 21 giu
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  12. 21 giu

    We are a sorry bunch of people on this planet.

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  13. ha ritwittato
    21 giu

    By tracking mRNA in brain cells, scientists captured the brain making memories - (Albert Einstein College of Medicine)

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  14. ha ritwittato
    24 apr

    Victoria Station, 1951.

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  15. ha ritwittato
    24 apr

    And any reason why the insinuated onus of eating healthy lies on the woman? Is it because they are body shamed more than men?

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  16. 20 apr
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  17. 21 mar

    Please, don’t let this list be any longer. 🙏🏽

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  18. ha ritwittato
    27 dic 2016

    Many pop stars & actors died in 2016. So did . He eradicated smallpox, which killed 500 million in the 20th century alone.

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  19. ha ritwittato
    27 gen

    Corrie ten Boom, a Holocaust survivor said, “What we have to do is love these people who hate us—love them, pray for them. These people are wounded people who have hate in their hearts. They need forgiveness. They need the Lord.”

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  20. ha ritwittato
    21 feb

    We are thankful for the life of Dr. . His ministry has impacted the lives of millions around the world.

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