Hemostasis: Lesson 2 - Platelet Activation and Aggregation

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  • čas přidán 21. 07. 2024
  • Part 1 of a 2 part video on normal hemostasis, focusing on the role of the endothelium and platelets.

Komentáře • 72

  • @Snowflakes_Magical_Adventures

    Had virtually no hemostasis and thrombosis lectures in my residency! Thank you for breaking it down to the point where anyone can understand your material! THANK YOU!!!!!

  • @zoink5406
    @zoink5406 Před 8 lety +3

    This is great. Really clarifies some concepts that are not laid out all that well in peer reviewed publications. Many thanks!

    • @StrongMed
      @StrongMed  Před 8 lety +3

      +zoink540 Thanks. It wasn't until I started looking into this topic in depth in preparation for this video, did I realize how confusing the relevant review papers were!

  • @DeepakJosephDr
    @DeepakJosephDr Před 6 lety +3

    Clear and concise, a great presentation which I shall recommend to all my students. Thank you for this effort.

  • @Hematology_Birb
    @Hematology_Birb Před 10 měsíci +1

    Thank you for this leacture. The animations really helped piece all the information together.

  • @foriribdy
    @foriribdy Před 8 lety +2

    Thank you for the remarkable videos. Is there a way to share part of the video (the fantastic animation) in a lecture ? thank you for further information.

  • @asadhandia8599
    @asadhandia8599 Před 5 lety

    Thank you very much for the amazing approach
    Is that possible to have the slides?

  • @Johannemd
    @Johannemd Před 9 lety +7

    ADAMST13 .. lol .... I keep enjoying your videos, pls keep up the great work.

  • @laurentiu244
    @laurentiu244 Před 8 lety +4

    Excellent and clear explanation of a difficult topic. Thank you

  • @fabianbalderrama9270
    @fabianbalderrama9270 Před 8 lety +1

    Thank you for the response!!!! You're amazing!

  • @rhoffmanrn
    @rhoffmanrn Před 2 lety

    Absolutely love your content! Thank you

  • @mariociencia12
    @mariociencia12 Před 4 lety +1

    Amazing! Incredible! Fantastic! Wonder! Super!

  • @AlexisTabah
    @AlexisTabah Před 9 lety

    Brilliant lectures Eric

  • @juancho1309
    @juancho1309 Před 9 lety +9

    Thank you so much. These videos are incredibly helpful.

  • @yanak18
    @yanak18 Před 7 lety +2

    AMAZING video!!

  • @Jnely9
    @Jnely9 Před 9 lety

    Very nice Eric! Thank you so much

  • @drshuaibsiddiqui
    @drshuaibsiddiqui Před 3 lety

    Beautiful videos. Keep going.

  • @romeolhk1008
    @romeolhk1008 Před 6 lety +1

    Wow Nice animation in between!!

  • @sayyedjamilabbas3492
    @sayyedjamilabbas3492 Před 2 lety

    Brief, well explained, fine diagrams
    Very helpful for medical students

  • @lawrenceugwumba4530
    @lawrenceugwumba4530 Před rokem

    Thank you!!!!!!!.....After 15 years...I now understand this!!!!

  • @soumyasaxena3519
    @soumyasaxena3519 Před 2 lety

    Thank you so much for this simple explanation of such detailed information 🙏🙏🙏

  • @omersharaf583
    @omersharaf583 Před 4 lety

    You are in a different level ,,,

  • @Dazzletoad
    @Dazzletoad Před 5 lety

    This is a great video.
    However something remains unclear.
    As far as I am aware, the vWF mediated adhesion occurs under high shear rates. This binding isn't enough, despite it's necessity under high shear.
    Following the vWF is the neighbouring binding to GPVI, which signalls the platelet to activate integrins (Ia/IIb a.k.a GPIa/IIa]) which tightly fixes the platelet to the adhered surface.
    Under low shear, as far as I know, binding to collagen is also mediated via GPIIb-IIIa and fibrinogen - but I cannot find any information on this.
    Your lecture states GPIb-IX-V-vWF-collagen binding occurs as well as direct GPIa-collagen and GPVI-collagen without the mention of fibrinogen.
    Is this the case and is the direct binding viable? 🤔

  • @sunving
    @sunving Před rokem

    Super good lecture. Your lecture is the best in education for intend audiences.

  • @dianitamar8
    @dianitamar8 Před 5 lety +2

    Thank you Dr. Strong! I am Pediatrics resident in Colombia. Your videos are very clear and informative :)

  • @ibrahimabdirahman9586
    @ibrahimabdirahman9586 Před 5 lety

    Thank you, doc. From School of Medicine in University of Hargeisa

  • @mty6391
    @mty6391 Před 3 lety

    movable video or diagram about plat.activation is wonderful

  • @gerardhoeltzel4690
    @gerardhoeltzel4690 Před 3 lety

    awesome video. thank you!

  • @user-gv2nu1et4s
    @user-gv2nu1et4s Před 5 lety

    So I just want to make sure that the platelets also secret vWf? And thanks very much for your lectures.

  • @ivarlundolsen8672
    @ivarlundolsen8672 Před 8 lety +2

    Brilliant lekture

  • @dr.ahmeda.s.m1215
    @dr.ahmeda.s.m1215 Před 5 lety

    thank you very much for clarification

  • @cedomird.petrovic9687
    @cedomird.petrovic9687 Před 6 lety

    Thank you for yet another great video. At 3.00, as I can guess without subtitles, you say "While the vasospasam of the endothelial cells..." What type of cell really contracts to provide vasospasam?

    • @dodge550i
      @dodge550i Před 6 lety

      pericytes

    • @waiki8223
      @waiki8223 Před 2 lety

      Every blood vessel (except for the miniscule capillaries) has it's own muscular elements myocytes.

  • @someonecrazy7708
    @someonecrazy7708 Před 8 lety +1

    Awesome 👌🏼

  • @sunving
    @sunving Před rokem

    Great lecture ,

  • @NZN5555
    @NZN5555 Před 9 lety +3

    neatly presented :)

  • @kurootsuki3326
    @kurootsuki3326 Před 5 lety

    this makes so much more sense than our lectures

  • @kachboubou83
    @kachboubou83 Před 7 lety

    Thank you, it was very instructive. However, I still have a shadowy area. What is the flip-flop ??

    • @mohammedabdullah5989
      @mohammedabdullah5989 Před 2 lety

      Is where Calcium cause the platelets to expose their serine substrates which causes clotting factors to bind to the platelets

  • @ameersaifi8097
    @ameersaifi8097 Před 7 lety

    I promise u, this is exactly what u need :) :)

  • @carolkong6140
    @carolkong6140 Před 3 lety

    So good. thank you

  • @fabianbalderrama9270
    @fabianbalderrama9270 Před 8 lety +1

    Awesome video.... but the alpha granules have/release Factor 4 (IV), not Factor 5 (V) I think.... let me know if I'm wrong :-)

    • @StrongMed
      @StrongMed  Před 8 lety +6

      +Fabian Balderrama The terminology is confusing. Alpha granules release coagulation factor V (Roman numeral), as well as platelet factor 4 (Arabic numeral). Whereas factor V plays a critical role in the coagulation cascade (discussed in lesson 3), the role of platelet factor 4 (PF4) in normal physiology is less clear. The only major reason to know about PF4 as a practicing clinician is due to its role in the development of a condition called heparin-induced thrombocytopenia (which will be discussed in a future video on hypercoagulable states - which I just haven't had time yet to make).

  • @nagatsatti8426
    @nagatsatti8426 Před 3 lety

    Excellent thank you too much doctor

  • @TheHyperMD
    @TheHyperMD Před 7 lety

    THANK YOU!!!

  • @user-fh7qs4co9d
    @user-fh7qs4co9d Před 5 lety

    Thank you so much

  • @marcelasilvestreoutteswand5354

    very good!

  • @haileash
    @haileash Před rokem

    Too good

  • @mediocretes
    @mediocretes Před 9 lety +2

    These are great! Just an aside, around 13:22 GP VI is written "GP IV."

    • @StrongMed
      @StrongMed  Před 9 lety +5

      Grrr...that's annoying...thanks for letting me know! (I really need to find someone willing to proofwatch these...)

    • @chonajoydelosreyes268
      @chonajoydelosreyes268 Před 9 lety

      +Eric's Medical Lectures you are great!

  • @kulshinidealwis9521
    @kulshinidealwis9521 Před 8 lety

    Thank you :)

  • @aizebhughelekelvin9749

    Wow please how can I download this video

  • @vipulaggarwal6992
    @vipulaggarwal6992 Před 5 lety

    Excellent

  • @xBassel92x
    @xBassel92x Před 5 lety

    Well .... It is still very difficult, but easier than the book though... So thank you !

  • @vrichardson38vr
    @vrichardson38vr Před 4 lety

    Great. Is there anywhere that the PowerPoint is accessible?

    • @StrongMed
      @StrongMed  Před 4 lety

      All the pdfs I have for my videos are available here (which I believe includes this one): drive.google.com/drive/folders/0B9SDUwepGWeUTmtscnJSSjR5OE0

  • @gjzztrrettmmggrrertzhgyena4950

    marvelous 🌺🌺🌺🌺

  • @MsSummertwilight
    @MsSummertwilight Před 8 lety +1

    This is really helpful, thanks a lot for this good explanations. Just one question: do you have any references? I'm writing my thesis atm and I can't really cite a youtube video :(

    • @Dazzletoad
      @Dazzletoad Před 5 lety

      Great question. I could use links to the source material too, especially when the explanations need context or further reading. 😎

  • @vfine100
    @vfine100 Před 9 lety

    I can only view 4 videos in Haematology, Am i missing some? can i find the whole series anywhere else?
    Many Thanks

    • @StrongMed
      @StrongMed  Před 9 lety

      Sorry, I've only posted the first 4. Still working on the others. The next one in the series should be posted within a few days.

    • @vfine100
      @vfine100 Před 9 lety

      splendid!
      ManyThanks

  • @suryateja4873
    @suryateja4873 Před rokem

    Can you share the PowerPoint here?

    • @StrongMed
      @StrongMed  Před rokem

      I'm very sorry, but I stopped sharing my PPT files many years ago after finding them incessantly plagiarized.

  • @forzamilan1924
    @forzamilan1924 Před 6 lety +1

    9:37

  • @basselraad
    @basselraad Před 9 lety

    excellent

  • @KyoushaPumpItUp
    @KyoushaPumpItUp Před 5 lety +1

    *ANO NE ANO NE*

  • @friedrichbaumgarten8886

    ..that must be one of the ridiculous enzyme names in the body.. völlig korrekte

  • @winwin-cd1bx
    @winwin-cd1bx Před 3 lety

    this topics are very frustating tho -_-