The
Benefits of Exercise
Exercise
is possibly the most important technique for managing gestational
diabetes. 30 minutes per day of moderate exercise is recommended.
30
minutes/ day decreases insulin resistance and enhances BG control.
Examples of
appropriate exercises are:
Walking, jogging, stationary cycling, golfing, hiking, swimming,
moderate weight lifting
Consideration of hypoglycemia risk with exercise in women taking
insulin or insulin secretagogues.
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American College of Obstetricians and Gynecologists
Recommendations
Exercise recommendations for previously inactive women:
30 min. moderate
cardio at least 3X/wk.
For
previously active women:
It's usually OK to continue:
expect at diminished pace/performance
stay
cool & well-hydrated,
beware of overstretching.
Avoid:
Activities w/risk of falls or abdominal trauma,
Holding breath while lifting weight,
Very high intensity exercises,
Lying flat on the back
Medications Used to Treat GDM
Glyburide,
taken to stimulate the pancreas to increase insulin production, appears
to be safe to use during pregnancy, and the dose is 2.5 mg-20 mg daily
in single or divided doses. Metformin is not recommended because it can
cross the placenta.
Mild
hypoglycemia may occur if the woman skips or delays meals or snacks.
There is
some evidence that glyburide may be less effective in obese patients or
those with hypoglycemia early in pregnancy.
Regular
insulin is the most commonly used, but is not perfect because its action
starts 30-60 minutes after injection, with its peak 2-3 hours after
injection. More research is needed on the use of insulin analogs in
gestational diabetes—insulin glargine currently is not approved in
pregnancy. And if multiple insulin injections are needed, NPH (Neutral
Protamine Hagedorn Insulin)
is commonly used.
Weight-based Insulin Dosing
Insulin
dosing is based on weight. The guidelines below come from the
“Sweet Success Guidelines for Care” from the California Diabetes &
Pregnancy Program.
Weeks Gestation |
Total Daily Requirement |
Weeks 1-13 |
0.7
to
0.8 units/kg |
Weeks 14-27 |
0.8 to 1
units/kg |
Weeks 28-40 |
0.9 to 1.2 units/kg |
Obesity |
1.5 to 2
units/kg |
Current
weight (kg) x total daily requirement based on gestational age =
total
daily dose
Give 2/3
TDD pre breakfast (2/3 NPH & 1/3 short or rapid acting insulin).
Give 1/3
TDD (1/2 short or rapid acting insulin pre dinner &
˝ NPH at
bedtime).
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