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The Heart Lab

Try “cardiac arrest”, “recovery”, “left ventricle”, or “hydration”.

    References

    Medical sources

    Every fact and explanation on The Heart Lab is linked to one or more of the public sources below.

    How references are verified

    Each link was checked on the date shown to confirm it resolves to the named organization's page. Some sites (such as heart.org) block automated checks; those were confirmed through search listings of the official domain and should be re-checked manually before launch. Links can change — please re-verify before each release.

    National Heart, Lung, and Blood Institute (NIH)

    Centers for Disease Control and Prevention

    American Heart Association

    • Congenital Heart Disease and Physical Activity(opens in a new tab)

      https://www.heart.org/en/health-topics/congenital-heart-defects/care-and-treatment-for-congenital-heart-defects/congenital-heart-defects-and-physical-activity

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • What Is Cardiac Arrest?(opens in a new tab)

      https://www.heart.org/en/health-topics/cardiac-arrest/about-cardiac-arrest

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • Heart Attack or Sudden Cardiac Arrest: How Are They Different?(opens in a new tab)

      https://www.heart.org/en/health-topics/heart-attack/about-heart-attacks/heart-attack-or-sudden-cardiac-arrest-how-are-they-different

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • All About Heart Rate (Pulse)(opens in a new tab)

      https://www.heart.org/en/health-topics/high-blood-pressure/the-facts-about-high-blood-pressure/all-about-heart-rate-pulse

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • Hypertrophic Cardiomyopathy (HCM)(opens in a new tab)

      https://www.heart.org/en/health-topics/cardiomyopathy/what-is-cardiomyopathy-in-adults/hypertrophic-cardiomyopathy

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • HCM in Young Adults and Student Athletes(opens in a new tab)

      https://www.heart.org/en/health-topics/cardiomyopathy/what-is-cardiomyopathy-in-adults/hcm-in-young-adults-and-student-athletes

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    • What is CPR(opens in a new tab)

      https://cpr.heart.org/en/resources/what-is-cpr

      Link verified 2026-10-25 · heart.org blocks automated link checks; confirmed via search listing of the official page.

    American College of Cardiology

    American Academy of Pediatrics — HealthyChildren.org

    American College of Cardiology — CardioSmart

    MedlinePlus (U.S. National Library of Medicine)

    U.S. Department of Health and Human Services (ODPHP)

    U.S. Departments of Agriculture and Health and Human Services