Aluminum Foil Reflector on Phototherapy for Newborn with Jaundice

Hyperbilirubinemia is defined as the presence of bilirubin in the serum of newborns at levels exceeding the normal range. It is the most common problem among healthy newborns, with an incidence of approximately 40% to 60% in full-term infants. The primary cause is the immature bilirubin metabolism in newborns, leading to the accumulation of excess bilirubin in the blood, which in turn results in a temporary yellowing of the skin and sclera, known as jaundice. Physiological jaundice in full-term newborns typically appears 24 to 72 hours after birth, peaking on days 4 to 5. Studies have shown that neonatal jaundice is a leading cause of readmission after discharge. Phototherapy is the most effective and safest treatment for neonatal hyperbilirubinemia. It takes advantage of bilirubin's sensitivity to light, converting bilirubin into water-soluble conjugated bilirubin, which is then excreted through bile and urine, thereby reducing total bilirubin levels. The most effective light during phototherapy has a wavelength of 400 nm to 520 nm and an intensity of at least 30 microW/cm²/nm, with at least 80% of the infant's body surface area exposed. This study aims to investigate whether using aluminum foil reflective covering around the phototherapy incubator can enhance the effectiveness of light treatment for jaundice in infants, thus potentially reducing the duration of phototherapy required.