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A&P Slight Befuddlement

Discussion in 'Education and Training' started by CityEMT212, Jul 11, 2018.

  1. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Hello EMS family,

    I'm having a bit of a burdensome time grasping a complete understanding of the heart in my EMT class; (semi-thankfully, I'm not alone in this feeling in my class). Atrium, vena cavae, directional blood flow, etc... Is there any advice on memorization or comprehension techniques that you all can offer?

    ~ LV
     
  2. Ridryder911

    Ridryder911 EMS Guru

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    Here is one I invented decades ago!

    T P M A =
    toilet paper my arse ;)

    Tricuspid-Pulmonary-Mitral- Aortic

    R/r 911
     
    MMiz, Gurby and Summit like this.
  3. Summit

    Summit Critical Crazy

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    Rid returns!!!
     
  4. Remi

    Remi Forum Deputy Chief Premium Member

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    Even though the heart is a single organ, functionally the sides of the heart are pretty distinct, so it helps a lot to visualize them as two separate pumps: the right heart and the left heart.

    Right heart:
    - the vena cava delivers de-oxygenated blood to the right atrium
    - the right atrium pumps blood through the tricuspid valve into the right ventricle
    - the right ventricle pumps blood through the pulmonic valve into the pulmonary artery, which goes to the lungs

    Left heart:
    - the left atrium receives freshly oxygenated blood from the lungs via the pulmonary vein
    - the left atrium pumps blood through the mitral valve into the left ventricle
    - the left ventricle pumps blood through the aortic valve into the aorta, which delivers blood to the body.

    Does it help at all to visualize them separately like that?
     
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  5. E tank

    E tank Caution: Paralyzing Agent

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  6. Aprz

    Aprz Forum Deputy Chief

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    For me, I just kept drawing and labeling it over and over. Even 8 years after EMT school, I still remember how to do it, lol.

    [​IMG]
     
  7. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Thanks everyone, I'll review all of the things you all shared :)
     
  8. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    APRZ,

    Thanks for the drawing, I'm a visual learner. I appreciate it.
     
  9. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    E Tank,

    Thanks for the video! I thought about referencing YouTube throughout my course for instructional videos - so I appreciate the nudge.
     
  10. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Remi,

    I appreciate the detailed break down. It makes sense when listed this way. Thanks.
     
  11. DrParasite

    DrParasite The fire extinguisher is not just for show

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    always try before you buy, so tricupid valve is before bicuspid valve.

    Also remember the ventricle have to push blood to the entire body, and out to the lungs, which is why they are so much thicker than the atrium.
     
    soflomedic14 likes this.
  12. Remi

    Remi Forum Deputy Chief Premium Member

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    Also:

    Tricuspid valve = Tri = right side of the heart
     
    soflomedic14 likes this.
  13. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Remi,

    Thanks for that - I would not have made that distinction on my own... I'll use that for my study group this weekend!
     
  14. E tank

    E tank Caution: Paralyzing Agent

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    But don't be confused by the fact that the aortic valve is a "tricuspid" (tri-leaflet) valve too. We just name it by it's position and not by it's structure. Calling a valve the "bicuspid" valve risks confusing the pulmonic and mitral valves.
     
  15. Hendrik

    Hendrik Forum Ride Along

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    I like teaching it to new EMT's in the following manner. Break down the flow into the 5 basic steps.
    1. Blood goes to the Right Atrium (RA)
    2. RA to RV via the Tricuspid Valve (you ride a tricycle before you get to ride a bicycle - not applicable to Chuck Norris)
    3. RV to lungs and back to LA
    4. LA to LV via Bicuspid valve
    5. LV to aorta via the aortic valve

    This is the most basic 5 steps of cardiac blood flow. Once you feel comfortable with these 5 steps start adding to each step with details; for example, Step 1. Oxygen-poor blood goes to the Right Atrium (RA) via the superior and inferior vena cava.

    I find that most students learn better this way, adding little by little as they get more comfortable with the basics. Hope this helps.
     
  16. LG1ALBERTA

    LG1ALBERTA Forum Ride Along

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  17. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Dr., that makes perfect sense of course. Thanks.
     
  18. CityEMT212

    CityEMT212 Forum Probie Premium Member

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    Hi Hendrik.

    For number three it's via the pulmonary artery...?
     
  19. CityEMT212

    CityEMT212 Forum Probie Premium Member

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  20. Hendrik

    Hendrik Forum Ride Along

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    Yes, blood will flow from the RA via the pulmonary valve into the pulmonary artery - pulmonary vein - LA.
    Just keep repeating the flow and it will commit to long-term memory. Good luck
     

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