Tujuan penelitian ini adalah mengetahui hubungan derajat hidronefrosis dan leukosit urin dengan kejadian komplikasi demam dan retropulsi pada pasien batu non-opaque yang menjalani URS. Penelitian ini bersifat prospektif, deskriptif analitik di RSUD dr. Fauziah Bireun Aceh selama Oktober-Desember 2016. Terdapat 42 pasien dengan didominasi laki-laki 73,8 , rata-rata berusia 47 tahun, 61,9 dengan batu di ureter proksimal, dan 76,2 diantaranya mengalami hidronefrosis sedang serta 28,5 mengalami leukosit urin ge;15/LPB. Komplikasi demam terjadi pada 11,9 pasien dan retropulsi batu sebanyak 7,1 . Derajat hidronefrosis dan leukosit urin merupakan faktor yang mempengaruhi terjadinya demam paska operasi. Kadar leukosit urin tidak mempengaruhi kejadian retropulsi.

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The purpose of this research is to know the relationship between degree of hydronephrosis, urinary leukocytes with incidence of fever and retropulsion as complication of non opaque stone patients underwent URS. This was prospective, analytical descriptive research in dr.Fauziah Bireun Hospital Aceh during October December 2016. From 42 patients, 73.8 were male with mean age 47y.o, 61.9 had proximal ureter stone, 76.2 had moderate hydronephrosis, 28.5 had urinary leucocytes ge 15 HPF. Fever occurred in 11.9 and retropulsion in 7.1 patients. Degree of hydronephrosis and urine leukocyte affect the incidence of post operative fever significantly. Urine leukocyte levels do not affect the incidence of retropulsion.