Perbedaan Laju Filtrasi Glomerulus Berdasarkan Kadar Kreatinin dan Cystatin C Serum pada Sindrom Nefrotik Anak
Sari
Latar belakang. Komplikasi sindrom nefrotik (SN) yang sering telambat terdeteksi adalah gangguan ginjal
akut (GnGA). Cystatin C serum dipertimbangkan menjadi pemeriksaan potensial pengganti kreatinin sebagai
penanda fungsi ginjal. Kadar cystatin C lebih mendekati nilai laju filtrasi glomerulus (LFG) dibandingkan
dengan kreatinin serum.
Tujuan. Menentukan perbedaan LFG berdasarkan kadar kreatinin dan cystatin C serum pada SN anak.
Metode. Penelitian potong lintang dilakukan dari Februari–Maret 2014 di unit rawat jalan dan rawat inap
RSUP Dr. Hasan Sadikin Bandung, RSUD Kota Bandung, dan RSUD Cibabat Kota Cimahi. Subjek SN
usia 1–14 tahun. Pemeriksaan kadar kreatinin dengan metode Jaffe dan cystatin C serum dengan particleenhanced
turbidimetric immunoassay (PETIA). Uji statistik menggunakan McNemar dan uji t berpasangan
dan kemaknaan berdasarkan nilai p<0,05.
Hasil. Terdapat 21 kasus SN yang terdiri atas 18 laki-laki dan 3 perempuan dengan rerata usia 6 tahun 3
bulan. Nilai LFG berdasarkan kreatinin 137,86±27,07 ml/min/1,73 m2 dan LFG berdasarkan cystatin C
73,59±12,49 ml/min/1,73 m2. Terdapat perbedaan signifikan antara LFG berdasarkan kadar kreatinin dan
cystatin C serum (p<0,01).
Kesimpulan. Proporsi LFG cystatin C berdasarkan formula Filler lebih rendah dibandingkan kreatinin
berdasarkan formula Schwartz
Kata Kunci
Teks Lengkap:
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DOI: http://dx.doi.org/10.14238/sp16.5.2015.325-9
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