Glucose Control During Labour in Gestational Diabetes Mellitus With Insulin Treatment: A Randomized Controlled Trial
Study Details
Study Description
Brief Summary
Pregnant women with gestational diabetes who are treated with insulin and their daily insulin dose is 30 IU or more will be randomized into two groups. Active treatment group will receive insulin-glucose-infusion during labour. In the observational group, blood glucose level during labour will be monitored and insulin-glucose-infusion is started only if needed. The hypothesis is that there will not be a difference in rate of hypoglycemia between the two groups and that the proportion of observational group participants that need infusion is low.
| Condition or Disease | Intervention/Treatment | Phase |
|---|---|---|
|
Phase 4 |
Detailed Description
Intrapartum blood glucose level has negative correlation to neonatal blood glucose level in type 1 diabetics. In gestational diabetes the correlation is less clear. In the view of current knowledge, it seems that moderately elevated intrapartum blood glucose may not cause neonatal hypoglycemia. There is no consensus of how to treat intrapartum blood glucose level in gestational diabetics. Some studies have implied that most of mothers with gestational diabetes would have normal blood glucose level during labour and hence would not need any intervention if their daily insulin dosage is less than 0,5-1 IU/kg.
Study participants are recruited into the study at Tampere University Hospital Maternity Ward when their daily insulin dose exceeds 30 IU. Randomization is done at 37th gestational week, if vaginal delivery is planned, and HbA1c is measured. Randomization envelope is opened at the delivery ward when active labour begins and treatment of blood glucose level is carried out accordingly. If insulin dose is 1 IU/kg or more, the participant is treated as in active treatment group despite of result of randomization. All neonates will receive milk substitute after birth in labour ward. Plasma glucose is measured immediately if neonate has symptoms of low blood sugar. If not, plasma glucose is measured approximately two hours after birth and after that every 4 hours until plasma glucose is 3,0 mmol/l or more in three consecutive measurements.
Study Design
Arms and Interventions
| Arm | Intervention/Treatment |
|---|---|
| Experimental: Insulin-glucose-infusion Insulin-glucose-infusion is administered once active labour begins and will be continued until birth. |
Drug: Insulin, Aspart
Insulin aspart Novorapid® Penfill 40 IU/0,4 ml is diluted into 1000ml of 0,9 % sodium chloride (NaCl). Infusion is started at rate 48 ml/l, which equates insulin dosing at rate of 2 IU/h. Glucose infusion is started simultaneously. 5 ml of potassium chloride (KCl) is added to 500 ml of 10 % Glucose solution. Infusion rate is 100 ml/h giving glucose infusion rate of 10 g/l. Plasma glucose level is measured every 1-2 hours and infusion rate of insulin is increased by 6ml/h if plasma glucose is more than 7,5 mmol/l and decreased by 6 mmol/h if plasma glucose is below 4 mmol/l.
Other Names:
|
| Active Comparator: Observation Plasma glucose level is measured every 1-2 hours during active labour and insulin-glucose-infusion is started if plasma glucose level exceeds 7,5 mmol/l in two subsequent measurements. |
Drug: Insulin, Aspart
Insulin aspart Novorapid® Penfill 40 IU/0,4 ml is diluted into 1000ml of 0,9 % sodium chloride (NaCl). Infusion is started at rate 48 ml/l, which equates insulin dosing at rate of 2 IU/h. Glucose infusion is started simultaneously. 5 ml of potassium chloride (KCl) is added to 500 ml of 10 % Glucose solution. Infusion rate is 100 ml/h giving glucose infusion rate of 10 g/l. Plasma glucose level is measured every 1-2 hours and infusion rate of insulin is increased by 6ml/h if plasma glucose is more than 7,5 mmol/l and decreased by 6 mmol/h if plasma glucose is below 4 mmol/l.
Other Names:
|
Outcome Measures
Primary Outcome Measures
- Neonatal hypoglycemia [within 48 hours after birth]
Neonatal plasma blood glucose < 3 mmol/l
Secondary Outcome Measures
- Moderate neonatal hypoglycemia [within 48 hours after birth]
Neonatal plasma blood glucose < 2,6 mmol/l
- Severe neonatal hypoglycemia [within 48 hours after birth]
Neonatal plasma blood glucose <2,2 mmol/l and/or demand of treatment
- Duration of neonatal blood glucose monitoring [within a week after birth]
- Proportion of participants needing insulin-glucose-infusion in the observational arm [during active labour]
Eligibility Criteria
Criteria
Inclusion Criteria:
- pregnant women with gestational diabetes mellitus and daily insulin dosage of 30 IU or more
Exclusion Criteria:
-
planned caesarean section,
-
premature birth (< 37 gestational weeks)
Contacts and Locations
Locations
| Site | City | State | Country | Postal Code | |
|---|---|---|---|---|---|
| 1 | Obstetrics and Gynecology Unit: Tampere University Hospital | Tampere | Finland | 33521 |
Sponsors and Collaborators
- Tampere University Hospital
Investigators
- Principal Investigator: Elina Kivekäs, MD, Obstetrics and Gynecology Unit: Tampere University Hospital
Study Documents (Full-Text)
None provided.More Information
Publications
- Barrett HL, Morris J, McElduff A. Watchful waiting: a management protocol for maternal glycaemia in the peripartum period. Aust N Z J Obstet Gynaecol. 2009 Apr;49(2):162-7. doi: 10.1111/j.1479-828X.2009.00969.x.
- Flores-le Roux JA, Sagarra E, Benaiges D, Hernandez-Rivas E, Chillaron JJ, Puig de Dou J, Mur A, Lopez-Vilchez MA, Pedro-Botet J. A prospective evaluation of neonatal hypoglycaemia in infants of women with gestational diabetes mellitus. Diabetes Res Clin Pract. 2012 Aug;97(2):217-22. doi: 10.1016/j.diabres.2012.03.011. Epub 2012 Apr 24.
- Garabedian C, Deruelle P. Delivery (timing, route, peripartum glycemic control) in women with gestational diabetes mellitus. Diabetes Metab. 2010 Dec;36(6 Pt 2):515-21. doi: 10.1016/j.diabet.2010.11.005. Review.
- Maayan-Metzger A, Lubin D, Kuint J. Hypoglycemia rates in the first days of life among term infants born to diabetic mothers. Neonatology. 2009;96(2):80-5. doi: 10.1159/000203337. Epub 2009 Feb 19.
- Metzger BE, Persson B, Lowe LP, Dyer AR, Cruickshank JK, Deerochanawong C, Halliday HL, Hennis AJ, Liley H, Ng PC, Coustan DR, Hadden DR, Hod M, Oats JJ, Trimble ER; HAPO Study Cooperative Research Group. Hyperglycemia and adverse pregnancy outcome study: neonatal glycemia. Pediatrics. 2010 Dec;126(6):e1545-52. doi: 10.1542/peds.2009-2257. Epub 2010 Nov 15.
- Ryan EA, Al-Agha R. Glucose control during labor and delivery. Curr Diab Rep. 2014 Jan;14(1):450. doi: 10.1007/s11892-013-0450-4. Review.
- Ryan EA, Sia WW, Khurana R, Marnoch CA, Nerenberg KA, Ghosh M. Glucose control during labour in diabetic women. J Obstet Gynaecol Can. 2012 Dec;34(12):1149-1157. doi: 10.1016/S1701-2163(16)35462-7.
- Stenninger E, Schollin J, Aman J. Early postnatal hypoglycaemia in newborn infants of diabetic mothers. Acta Paediatr. 1997 Dec;86(12):1374-6.
- R15050M