Tesis

Titik Potong Rasio Hitung Neutrofil dan Limfosit untuk Memprediksi Derajat Steatosis dan Fibrosis Penyakit Perlemakan Hati Non Alkoholik = Cut-off point Neutrophils and Lymphocytes Ratio to Predict the degree of Steatosis and Fibrosis of Non-Alcoholic Fatty Liver Disease.

Latar Belakang : Non-alcoholic fatty liver disease (NAFLD) adalah penyakit hati kronik yang ditandai dengan akumulasi lemak berlebihan di hati. Elastografi Transien (ET) dan metode Controlled Attenuation Parameter (CAP) merupakan metode pemeriksaan non-invasif untuk menilai derajat fibrosis dan steatosis, namun tidak tersedia di seluruh rumah sakit di Indonesia. Rasio Neutrofil Limfosit (RNL) merupakan penanda peradangan sederhana yang berpotensi memprediksi luaran penyakit. Tujuan : Mengetahui nilai diagnostik RNL sebagai indikator derajat keparahan steatosis dan fibrosis NAFLD. Metode : Penelitian ini adalah studi potong lintang menggunakan data sekunder dari data rekam medis tahun 2016-2018. Analisis statistik deskriptif dan analitik berupa uji korelasi, Receiver Operating Curve (ROC) dan Area Under The Curve (AUC) dipakai untuk mengetahui luaran studi. Hasil : Dari 106 subjek penelitian, kebanyakan pasien adalah perempuan (62,3%) berusia rata-rata 57,29 tahun dan menderita sindrom metabolik (77,4%). Sebagian besar pasien memiliki derajat steatosis sedang-berat (66%) dengan rerata ET 6,14 (2,8-18,2). Terdapat korelasi antara nilai CAP (r=0,648; p < 0,001) dan ET (r=0,621; p < 0,001) dengan RNL. Penggunaan RNL untuk menilai derajat steatosis sedang-berat memiliki titik potong 1,775 dengan sensitivitas, spesifisitas, NDP dan NDN sebesar 81,5%, 80,6%, 89,1%, dan 69,1%; titik potong 2,150 untuk menilai fibrosis signifikan dengan sensitivitas, spesifisitas, NDP dan NDN berurutan sebesar 92.3 %, 87.5%, 70.6%, dan 97.2%. Simpulan : RNL memiliki korelasi positif dan signifikan terhadap derajat steatosis (CAP) dan fibrosis (ET) dengan sensitivitas dan spesifisitas yang cukup tinggi.
Kata Kunci : Fibrosis, NAFLD, Rasio netrofil dan limfosit, Steatosis


Introduction : Non-alcoholic fatty liver disease (NAFLD) is a chronic inflammatory disease with excessive fat accumulation in the liver. Transient Elastography (TE) with Controlled Attenuation Parameter (CAP) is a device and method to examine the degree of fibrosis and steatosis. However, this device is not widely available across Indonesia. Neutrophil and Lymphocyte Ratio (NLR) is a simple marker for inflammation which has a potency to predict disease outcome. Objective : To know the diagnostic value of RNL as the indicator of steatosis and fibrosis severity. Methods : This was a cross-sectional study using secondary data from the medical record, starting from 2016-2018 with the respective inclusion and exclusion criteria. A descriptive and analytic statistic, including correlation test, Receiver Operating Curve (ROC) and Area Under The Curve (AUC) were done to know the outcome of the study. Result: Out of 106 subjects, 62.3% patients were women with aged mean 57.29 years old and 77.4% had metabolic syndrome. Most patients had average-severe steatosis degree (66%) with the mean of ET mean 6.14 (2.8-18.2). There was a positive correlation between CAP and TE compared with NLR with r = 0.647 (p < 0.001) and r = 0.621 (p < 0.001) respectively. The use of NLR to assess moderate-severe steatosis has a cutoff point of 1.775 with sensitivity, specificity, PPV and NPV of 81,5%, 80,6%, 89,1%, and 69,1% respectively; cutoff point 2,150 to assess significant fibrosis with sensitivity, specificity, PPV and NPV of 92.3 %, 87.5%, 70.6%, 97.2% respectively. Conclusion : NLR has a positive and significant correlation with the degree of steatosis and fibrosis with high sensitivity and specificity in comparison with ET/CAP
Keywords : Fibrosis, Neutrophile and lymphocyte ratio, NAFLD, steatosis.