PMLS FINALS Flashcards
deficiency of insulin
Type 1 DM
defect in insulin secretion and cellular resistance to insulin
Type 2 DM
develops during pregnancy
Gestational DM (GDM)
Patient should:
1. Eat a balanced
diet that includes
150g/day of
carbohydrates for
3 days
2. Fast for 12-16 hours
3. Avoid smoking,
tobacco, gum and
vigorous exercise
GTT Preparation
2-Hour OGTT
Recommended method for the diagnosis of diabetes mellitus
- Collection of FBS sample
- Patient drink a 75-g glucose solution within 5 minutes
- Collection of sample for glucose after 2 hours.
2-Hour OGTT
≥200 mg/dL glucose is indicative of diabetes mellitus
2-Hour OGTT
- Same as OGTT
- Glucose ≤140mg/dL
normal
One-Step Method for Gestational Diabetes
- First test: 50-g OGTT
- Second test: 75-g
OGTT or 100-g 3-hour
OGTT
Two Step Method for Gestational Diabetes
Evaluates patient’s ability to
digest lactose (milk sugar)
Lactose Tolerance Test
increase of no more than 20
mg/dL from fasting sample indicates
lactose intolerance
Peaks 4-6 am; lowest 8
pm to 12 am
Cortisol
Lower at night
ACTH, plasma
renin activity, Aldosterone,
Insulin
Higher in afternoon and
evening
GH, ACP
Higher levels at 4 and 8
am and at 8 and 10 am
Prolactin
Peaks early to late
morning; decreases up
to 30% during the day
Iron