Somogyi Effect Vs Dawn Phenomenon Usmle

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The Dawn Phenomenon And The Somogyi Effect - Two Phenomena Of Morning Hyperglycaemia.

Abstract Morning hyperglycaemia in diabetic subjects may be caused by the dawn phenomenon, or the Somogyi effect, or poor glycaemic control. The dawn phenomenon occurs when endogenous insulin secretion decreases or when the effect of the exogenous insulin administered to the patient the day before disappears, together with a physiological increase in insulin-antagonistic hormones. The Somogyi effect is present in the case of excessive amounts of exogenous insulin. The dawn phenomenon is more common than the Somogyi effect. To diagnose these phenomena, it is useful to measure plasma glucose levels for several nights between 3 a.m. and 5 a.m. or use a continuous glucose monitoring system. Although their treatment differs, the best way of preventing both the dawn phenomenon and the Somogyi effect is an optimal diabetes control with insulin therapy. Continue reading >>

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Popular Questions

  1. bangbong2000

    I guess they have to give us tips in the question like in case of somogyi pt morning hyperglycemia not improving with restriction of carbohydrate food before bed... Anyone can give me more idea?

  2. sonu.agarwall

    i read abt it somewer man....not sure wer....sum wer in my final year texts.....will post as soon as i find it....somogyi is sumthing in middle of night due to medications n dawn phenomenon is in early mrng related to counter regulatory hormones...sumthing like that

  3. docnas

    somogyi = rebound hyperglycemia due to hypoglycemia because of too much insulin given before sleeping
    dawn phenom is due to homones being released according to circadian rhythm main hormone noted is GH. this causes a hyperglycemic state.

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