What is HLHS

Hypoplastic Left Heart Syndrome is a Congenital Heart Defect (CHD) where a child is born with a non-functioning left side of their heart.

This site helps explain in more detail how a HLHS heart functions and the surgical techniques in use today. Cover Point Foundation

The Foundation

Named after Micah Mason, a heart warrior, the Foundation was created to support institutions performing research of treatment and cures for Hypoplastic Left Heart Syndrome (HLHS) and similar Congenital Heart Defects (CHD).

In pursuit of that mission the foundation works with researchers, research organizations, and teams at local hospitals to fund the future of treatment for children with complex CHDs. The foundation also works within patient and parent groups to inform them of new advances and advocate for participation in the development of future cures.

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Research for the future of our Heart Warriors

Hypoplastic Left Heart Syndrome (HLHS) is a rare Congenital Heart Defect (CHD) that affects roughly 1% of children born with a CHD. In a child with a fully-formed heart, the right side of the heart receives blood from the body and pumps it to the lungs for oxygenation. Then the left side of the heart receives the blood from the lungs and pumps it out to the body. In a child with HLHS, the left side of the heart is too small to pump blood out to the body, and, within a few days after birth, the child's body becomes oxygen-starved and medical intervention is required to keep the child alive. Before the 1970s, no child with HLHS survived longer than a week.

In the 1970s and 1980s, surgeries were developed that re-worked the heart so that the right side of the heart could perform the function of both the left and right side of the heart. Since then the developments have produced a course of three surgeries that successfully re-tool the heart and have brought the survival rate of children born with HLHS to ~95%. This has been amazing for the children, of course, but now we need to consider their futures.

Now children with HLHS are living into adulthood. This brings questions with it: how long can a re-tooled heart do the work of a normal heart? What happens when the degraded circulatory system begins to fail? If a child or adult goes into heart failure what are the paths forward and can we make them better? What can we do to forestall the symptoms of a failing Fontan and eventually eliminate them all together? Can we develop a better long-term solution?

The Foundation is here to help people and organizations who are trying to answer these questions. We raise the funds, so they can focus on the research.


Resources for Parents

Research Reviews

Micah's Story

Our Journey with Micah

  • Meet Micah

    This is Micah, or Micah-man as we like to call him. He is the name-sake of the foundation. Born in 2015 with HLHS he has undergone two procedures known as the Norwood and Glenn surgeries to re-purpose the right side of his heart to function as his whole heart. He still has another surgery on the horizon, the Fontan surgery which will complete the re-purposing.