open access

Vol 62, No 3 (2011)
Postgraduate education
Published online: 2011-06-29
Submitted: 2013-02-15
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The dawn phenomenon and the Somogyi effect — two phenomena of morning hyperglycaemia

Malwina Rybicka, Robert Krysiak, Bogusław Okopień
Endokrynologia Polska 2011;62(3):276-284.

open access

Vol 62, No 3 (2011)
Postgraduate education
Published online: 2011-06-29
Submitted: 2013-02-15

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. (Pol J Endocrinol 2011; 62 (3): 276–283)

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. (Pol J Endocrinol 2011; 62 (3): 276–283)
Get Citation

Keywords

morning hyperglycaemia; dawn phenomenon; Somogyi effect

About this article
Title

The dawn phenomenon and the Somogyi effect — two phenomena of morning hyperglycaemia

Journal

Endokrynologia Polska

Issue

Vol 62, No 3 (2011)

Pages

276-284

Published online

2011-06-29

Bibliographic record

Endokrynologia Polska 2011;62(3):276-284.

Keywords

morning hyperglycaemia
dawn phenomenon
Somogyi effect

Authors

Malwina Rybicka
Robert Krysiak
Bogusław Okopień

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