Neurocognitive Impact of Hypoglycemia in Type 1 Diabetes (HYPO)

The Washington University

Status: Completed

Conditions: Type 1 Diabetes Mellitis

Study type: Observational

Funder types: Other; NIH

Identifiers

NCT00916838

02-1012 -201102446

R01DK064832 (U.S. NIH Grant/Contract)

Details and patient eligibility

About

125 children with Type 1 Diabetes mellitis (T1DM) between 4 and 16 were recruited and 62 healthy siblings also enrolled in the study.

Children with T1DM and sibling controls ages 4 to 16 were assessed on memory and executive control skills at entry to the study (Test 1) and after two years of close monitoring for blood sugar events (Test 2). Diabetic children have their blood sugar tested directly before and after cognitive testing to ensure their blood sugar is within range during the testing. The 2-year follow-up period involves parents/child reporting any severe diabetic episode and periodically providing the results of the diabetic child's usual blood tests from their glucose monitoring device.

Children 7 and older also underwent high resolution MRI scans.

Enrollment: 187 patients

Sex: All

Ages: 4 to 16 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Age 4 - 16 (for MRI, must be 7 or older)

Exclusion criteria

• Pregnant or lactating (females 13+)
• Chronic disease other than T1DM, well-controlled asthma, or Hashimoto's thyroiditis. (Exclude for hypothyroidism)
• Other current serious medical illness
• Co-morbid psychiatric illness: such as mania, ADHD, LD, major depression, mental retardation, or psychoactive drug dependence
• Co-morbid neurological illness: stroke, seizure, major loss of consciousness, other brain trauma/surgery, or head injuries (i.e. near drowning), encephalitis, or hydrocephalus, blindness, deafness
• EXCEPT T1DM-related
• Pre-maturity at birth >4 wks early (<36 wk term) w/ sequelae e.g. on respirator at NICU
• Use of psychoactive medications or exposure to neuroleptics (except that exposures of less than 1 month, occurring more than 5 years ago, will be allowed) or pts. w/recent tx w/dopamine depleting agents or stimulants such as Ritalin, Cylert, Adderall
• Contraindication to MRI scan (e.g. claustrophobia, metal implants, foreign bodies) - N/A if < 4 years old
• Full set (top and bottom) orthodontic braces. (Half set braces, fillings, and retainers are OK)

Trial design

187 participants in 2 patient groups

Type 1 Diabetes Mellitis

Description:

Children with Type 1 Diabetes Mellitis (T1DM) between 4 and 16 were recruited.

Non diabetic Control

Description:

62 healthy siblings also enrolled in the study between the ages of 4 and 17.