IRCT2013102315134N1 IRCT 2014-01-08 Vice chancellor for reasearch , Shiraz University of Medical Sciences Head covering effects on serm calcium during phototherapy Head covering during phototherapy appropriate and safe method for Prevention of phototherapy-induced hypocalcaemia in icterus newborn with unaltered serum magnesium level. 2010-03-20 anticipated 72 Complete https://irct.ir/trial/14504 interventional Randomization: Randomized, Blinding: Not blinded, Placebo: Not used, Assignment: Parallel, Purpose: Prevention. 2-3 Jaundice. Intervention 1: Case group intervention: The occipital area of this group during phototherapy was covered by a hat. Calcium and magnesium levels were checked at the beginning, 48 hours after starting phototherapy, and 24 hours after the treatment. All the infants were placed under phototherapy with 8 Lamp, 40 watts, blue light with a wavelength of 470-410 nanometers, at a distance of 40 -30 cm from the body surface area. Calcium level equal to or less than 7.5 mg/dl was considered as hypocalcaemia and Mg level equal to or less than 1.2 mg/dl was considered as hypomagnesaemia. White cabling Hat was used for newborns. Intervention 2: Control group intervention: Routine phototherapy was used for first group. Calcium and magnesium levels were checked at the beginning, 48 hours after starting phototherapy, and 24 hours after the treatment. All the infants were placed under phototherapy with 8 Lamp, 40 watts, blue light with a wavelength of 470-410 nanometers, at a distance of 40-30 cm from the body surface area.