Somogyi Phenomenon

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Dawn Phenomenon Or Somogyi Effect? What's The Difference?

You wake up in the morning and check your blood sugar before breakfast. And it's high. Higher than it usually is in the morning. What's going on? A random elevated blood sugar could be a result of a variety of things: perhaps you ate too many carbohydrates the night before, you took less medicine than you're supposed to or you forgot to take it altogether. Maybe you are getting sick or are very stressed? Or maybe it's none of those things, but what could be causing it to be high? If you've noticed a pattern of elevated blood sugars in the morning, it could be a result of something called the dawn phenomenon or the Somogyi effect. The dawn phenomenon and the Somogyi effect both can raise your fasting blood glucose levels in the morning, but for different reasons. What Causes the Somogyi Effect and Dawn Phenomenon? Both occurrences are very similar in some respects and have to do with hormones that tell the liver to release glucose into your blood stream while you sleep. The difference is why the hormones are released. The Somogyi effect is caused by having too much insulin in the blood during the night. This can happen to people who take long-acting insulin, or if you are required t Continue reading >>

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Popular Questions

  1. illinipeds

    Somogyi is morning hyperglycemia as a result of hypoglycemia during the night and is the result of too high of a dose of insulin at night. Dawn phenomenon is morning hyperglycermia without hypoglycemia during the night and is a result of normal cycles within the body.
    Here is a website that explains it more: http://www.dlife.com/dLife/do/ShowCo...nero_0106.html

  2. Sippy

    Per Saunders NCLEX prep
    Dawn Phenomenon results from reduced tissue sensitivity to insulin that develops between 5 and 8 am (dawn). Prebreakfast hyperglycemia occurs. So you'll wake up hyper at dawn.
    Tx: Administer an evening dose of intermediate-acting insulin at 10 pm.
    Somogyi's phenomenon hypoglycemia occurs at 2 to 3 am. By 7 am the blood glucose rebounds significantly to the hyperglycemic range. I remember this with (I have a brother named Yogi who's a musician), the club closes at 2-3 in the morning, Yogi is low so off to breakfast he goes.
    Tx: Decrease the evening (predinner or bedtime) dose of intermediate-acting insulin or increase the bedtime snack.
    Hope that helps

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