SPECS: Safe Pediatric Euglycemia in Cardiac Surgery

Study Results

Results available

Outcome measurements, participant flow, baseline characteristics, and adverse events have been published for this study.

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Basic Information

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Recruitment Status

COMPLETED

Clinical Phase

NA

Total Enrollment

989 participants

Study Classification

INTERVENTIONAL

Study Start Date

2006-11-30

Study Completion Date

2014-01-31

Brief Summary

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Critically ill children, including children undergoing heart surgery, commonly develop elevated blood glucose (also known as "blood sugar") levels during their illness, which can lead to poor health outcomes and an increased risk of death. This study will examine the effectiveness of maintaining normal blood glucose levels at decreasing infections and improving recovery in young children undergoing heart surgery.

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Detailed Description

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Children undergoing heart surgery are under significant bodily stress, which can lead to higher than normal or lower than normal blood glucose levels. A synthetic form of insulin, a naturally occurring hormone in the body, can be injected into people to normalize blood glucose levels. Insulin is most commonly used to treat people with diabetes, but it is also used in hospitals to control blood glucose levels in patients. Previous studies of adult intensive care unit (ICU) patients have shown that patients whose blood sugar levels are maintained at normal levels with the use of insulin contract fewer infections and are released more quickly from the ICU than patients who do not maintain normal blood glucose levels. This study will use a continuous blood glucose monitoring system to detect changes in blood glucose levels. Intravenous insulin infusions will be used to then safely maintain normal blood glucose levels. The purpose of this study is to determine if maintaining normal blood glucose levels during an ICU stay will help decrease the incidence of infections and improve surgical recovery in young children following heart surgery.

This study will enroll children who are undergoing heart surgery that requires a cardiopulmonary bypass procedure. Participants will be randomly assigned to either a control group or the treatment group. All participants will receive usual care while in the ICU and will undergo continuous glucose monitoring. Participants in the treatment group will receive intravenous insulin infusions to keep their blood glucose within the normal range. While in the ICU, blood will be collected from all participants once a day for the first 3 days and then once a week to monitor glucose levels, hormone levels, and measurements of nutrition and immune function. On days 1 and 5 following surgery, participants who are on a ventilator will have their breath measured to monitor heart function and energy use. Thirty days and 1 year following surgery, study researchers will contact the participant's parent or doctor to collect information on health status and any new infections at the surgical site. Children who enroll in the study will be asked to participate in follow-up neurodevelopmental evaluations at 1 and 3 years of age to assess longer term cognitive effects of tight glycemic control in the ICU.

Conditions

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Heart Defects, Congenital Hyperglycemia

Study Design

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Allocation Method

RANDOMIZED

Intervention Model

PARALLEL

Primary Study Purpose

TREATMENT

Blinding Strategy

NONE

Study Groups

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Insulin

Insulin was infused to target a blood glucose concentration of 80-110 mg/dL

Group Type EXPERIMENTAL

Insulin

Intervention Type DRUG

Study drug is continuously infused intravenous insulin. Suggested dose is calculated by a computerized infusion algorithm using the participant's blood sugar concentration. The insulin infusion rate is titrated to maintain normal blood sugar. Participants are eligible to receive insulin while they have an in-dwelling arterial catheter.

Usual Care

Insulin was infused according to the discretion of the treating clinical team.

Group Type ACTIVE_COMPARATOR

Usual Care

Intervention Type OTHER

Participants receive standard Cardiac ICU care without tight blood glucose control.

Interventions

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Insulin

Study drug is continuously infused intravenous insulin. Suggested dose is calculated by a computerized infusion algorithm using the participant's blood sugar concentration. The insulin infusion rate is titrated to maintain normal blood sugar. Participants are eligible to receive insulin while they have an in-dwelling arterial catheter.

Intervention Type DRUG