Glycosuria & Diabetes Mellitus
Start with the big picture
Glycosuria occurs when glucose excretion exceeds the kidneys’ capacity to reabsorb it, typically when plasma glucose rises above the renal threshold. Defects involving SGLT-2 or proximal tubular function can also produce glycosuria without elevated blood glucose. Diabetes mellitus is characterized by chronic hyperglycemia and altered carbohydrate, fat, and protein metabolism. The lesson distinguishes major diabetes types and reviews diagnostic criteria using fasting glucose, oral glucose tolerance testing, random glucose with symptoms, and HbA1c. It connects insulin deficiency or resistance with the classic symptom triad and acute and chronic complications. It also introduces glycemic markers, urine glucose testing, and screening considerations.
What you'll learn
- Explain how the renal threshold and tubular glucose reabsorption relate to glycosuria.
- Distinguish renal glycosuria from glycosuria associated with hyperglycemia.
- Describe the major forms of diabetes mellitus and their underlying metabolic features.
- Identify diagnostic measures and glycemic markers used in diabetes mellitus.
- Relate diabetes symptoms and complications to its metabolic effects.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
