Thursday, January 26, 2012

Hypoplastic Right Heart Syndrome

Hypoplastic right heart syndrome (HRHS) refers to underdevelopment of the right sided structures of the heart. These defects cause inadequate blood flow to the lungs and thus, a blue or cyanotic infant. The major problem is pulmonary valve atresia (absence). This valve normally opens and closes to let blood flow to the pulmonary artery. Secondary problems include a very small (hypoplastic) right ventricle (lower chamber which normally pumps blood to the lungs); a small tricuspid valve (this valve allows blood to flow into the right ventricle) and a small (hypoplastic) pulmonary artery. Also, the blood flow into the coronary arteries may be abnormal causing damage to the heart muscle.

The infant is born with two connections that help blood flow. These are a foramen ovale (hole between the atria) and patent ductus arteriosus (or PDA, a blood vessel between the aorta and pulmonary artery). As these connections begin to close, the infant becomes critically ill.

Because the blue blood cannot pass through the right side of the heart to get to the lungs, it crosses into the left atrium and mixes with red blood returning from the lungs. This mixed blood is pumped out of the aorta. The only way in which blood gets to the lungs is through the PDA. The PDA must be maintained open with medicine (PGE1). Surgery is usually performed shortly after starting PGE1 to create an artificial connection (shunt) between the aorta and the pulmonary artery to deliver blood to the lungs.


  1. Howdy great blog! Does running a blog such as this take
    a massive amount work? I have very little understanding of programming however I had been
    hoping to start my own blog soon. Anyhow, should you have any
    ideas or tips for new blog owners please share. I know this is off subject but
    I simply wanted to ask. Appreciate it!

    Also visit my site -

  2. Everyone loves what you guys tend to be up too. This type of clever work and coverage!
    Keep up the great works guys I've included you guys to my personal blogroll.

    Feel free to visit my homepage; Veluminous

  3. My family every time say that I am wasting my time here at web, except I know I am getting knowledge everyday by reading such fastidious articles or reviews.

    My homepage acai ultra

  4. Every weekend i used to pay a visit this web page, as i wish for enjoyment, as this this web
    page conations truly fastidious funny information too.

    Also visit my blog Buy Elevate GF

  5. Good post. I am experiencing some of these issues as well.

    my site; eye cream for men

  6. Piece of writing writing is also a excitement,
    if you be familiar with after that you can write if not
    it is complex to write.

    Look into my homepage ::

  7. I'll immediately seize your rss as I can not to find your email subscription hyperlink or newsletter service. Do you've any?
    Please allow me recognize so that I may subscribe.

    Feel free to surf to my homepage :: Fase cream

  8. Hi there, its pleasant post on the topic of media print, we all understand media
    is a great source of information.

    Visit my page ... Androsolve

  9. I've been surfing on-line more than three hours these days, yet I by no means found any interesting article like yours. It is lovely price enough for me. In my opinion, if all web owners and bloggers made just right content material as you did, the net can be much more useful than ever before.

    My blog; green coffee reviews

  10. Hello there! This is kind of off topic but I need some guidance from an established blog.
    Is it hard to set up your own blog? I'm not very techincal but I can figure things out pretty fast. I'm thinking about
    making my own but I'm not sure where to begin. Do you have any points or suggestions? Thank you

    My web site ... Garcinia Cambogia Diet

  11. I have to thank you for the efforts you have put in penning
    this website. I'm hoping to check out the same high-grade content by you in the future as well. In truth, your creative writing abilities has inspired me to get my own site now ;)

    My blog post; NaturaCleanse Diets

  12. When some one searches for his necessary thing, therefore he/she needs to be available that in detail,
    thus that thing is maintained over here.

    Feel free to surf to my blog post - Diet Patch

  13. Wow, that's what I was searching for, what a data! present here at this blog, thanks admin of this website.

    Here is my web blog ... Ultra Slim Patch Diet

  14. Thanks a bunch for sharing this with all folks you really realize
    what you're speaking approximately! Bookmarked. Kindly additionally consult with my website =). We will have a link alternate agreement among us

    Here is my webpage: Raspberry ketone Plus Reviews

  15. Hello, everything is going fine here and ofcourse every one is sharing facts,
    that's really fine, keep up writing.

    My web-site; Natural CLeanse Review

  16. Ridiculous story there. What happened after?

    Take care!

    Review my site - Cambogia trim

  17. Good day! I know this is kind of off topic but I was wondering which blog
    platform are you using for this site? I'm getting fed up of Wordpress because I've had problems with hackers and I'm looking at alternatives for another platform. I would be fantastic if you could point me in the direction of a good platform.

    my web site - Lean Muscle Formula

  18. Amazing! Its in fact awesome paragraph, I have got much clear idea about from
    this piece of writing.

    Feel free to visit my site; Vimax Review

  19. It's an remarkable paragraph for all the online users; they will get advantage from it I am sure.

    Also visit my web page: Nuvocleanse Detox

  20. Nice weblog here! Additionally your site a lot up very fast!
    What host are you the usage of? Can I am getting your associate hyperlink for your host?
    I want my website loaded up as quickly as yours lol

    Feel free to surf to my blog ... way to make money online

  21. Helpful information. Fortunate me I found your web
    site unintentionally, and I am surprised why this twist of fate did not came
    about in advance! I bookmarked it.

    Here is my web blog: photo booth rental Los Angeles

  22. Males, in particular, should not be consuming soy protein in any significant amount, let alone
    twice a day every day as Visalus advises. Food being part
    of the physiologic needs of people should be taken with some
    sort of discipline. Ryan Blair is the CEO and is the embodiment of the Vi - Salus vision.

    my homepage - home business