Implementation of a Transcutaneous Bilirubinometer

Rationale:

Neonatal jaundice, caused by hyperbilirubinemia, is frequently seen in healthy newborns. Severe hyperbilirubinemia can cause bilirubin encephalopathy (kernicterus). Assessment of the degree of jaundice is usually done visually,and if necessary serum bilirubin is investigated in a blood sample. The visual assessment is subjective and can alternatively be replaced by transcutaneous measurement.The transcutaneous bilirubinometer is a validated measurement-tool, which provides us with an estimated serum bilirubin-concentration. Little is known about the effect of the actual use of a bilirubinometer on the quality of care. Further evidence is needed to evaluate whether transcutaneous bilirubin measurements improve clinical outcome (use of blood tests, phototherapy and exchange transfusion), shorten length of stay and reduce costs.

Objective:

To evaluate the cost-effectiveness of implementing the use of a transcutaneous bilirubinometer in jaundiced neonates.

Study design:

Randomized controlled trial

Study population:

All jaundiced newborns beyond a gestational age of 32 weeks and younger than 8 days who are admitted at the maternity-ward or the neonatal-ward of our hospital.

Intervention:

Assessment of jaundice by use of a transcutaneous bilirubinometer.

Control:

Visual assessment of jaundice (current standard of care)

Main study parameters/endpoints:

Primary outcome variable:

The number of blood punctures for bilirubin measurement.

Secondary outcome:

Phototherapy duration in hours, amount of bilirubin-values above the exchange transfusion limit, highest measured serum bilirubin, costs (blood test, use bilirubinometer, costs admittance)

Nature and extent of the burden and risks associated with participation, benefit and group relatedness:

Burden: A non-invasive transcutaneous measurement using a transcutaneous bilirubinometer (harmless light-reflection-technique). It takes at most 5 seconds to perform the measurement at the forehead or sternum.

Risk:It could be possible that a severe hyperbilirubinemia will be missed. This is a greater risk in the control group, due to the fact that visual assessment is known to be unreliable. When in doubt, the clinical team will have the authority to determine the serum bilirubin-value.

Inclusion criteria

• All newborns at the pediatric- and maternity-ward with visible jaundice.
• Gestational age of 32 weeks or more.
• Older than 24 hours.
• Younger than 8 days.

Exclusion criteria

• Neonatal jaundice within 24 hours or after 8 days
• Hemolysis present based on maternal history (for example irregular erythrocyte antibodies)
• Bilirubin encephalopathy
• Newborns during/after phototherapy
• Large congenital anomaly at forehead/sternum
• Serum bilirubin-value is already known before admission to the pediatric ward;those newborns are to be admitted because the serum bilirubin-level has reached the phototherapy or exchange transfusion limit.