PENGARUH NON-NUTRITIVE SUCKING TERHADAP RESPON NYERI DAN FREKUENSI NADI BAYI BBLR SAAT TINDAKAN PEMASANGAN INFUS DI RUANG NICU: The Effect of Non-Nutritive Sucking on the Pain Response and Pulse Frequency of LBW Babies During Infusion Installation in the NICU Room at RSD Mangusada. jika. 2025;7(1):40-46. doi:10.32584/jika.v7i1.2534