Latar belakang: Prevalensi infeksi Helicobacter pylori pada anak di Indonesia 8%- 52%. Gejala dominan pada anak dengan infeksi H. pylori adalah refluks gastroesofageal yang mengganggu kualitas hidup (penyakit refluks gastroesofageal/PRGE), yang secara definitf di diagnosis dengan pemeriksaan esofagogastroduodenoskopi (EGD). Untuk mengetahui infeksi dilakukan uji Rapid Urease Test (RUT) pada saat bedside, namun uji ini belum diketahui akurasinya Tujuan: Mendapatkan proporsi positif RUT pada biopsi lambung dibandingkan real-time PCR. Selain itu ingin diketahui karakteristik gambaran klinis, demografi, dan hubungan faktor risiko pada anak PRGE yang menjalani prosedur EGD. Metode: Penelitian potong lintang pada 46 anak dengan PRGE di RSCM dan RS MMC. Semua subyek menjalani RUT, real-time PCR dan histopatologi. Hasil: Anak perempuan berusia lebih dari 10-18 tahun dengan tingkat pendidikan orangtua rendah mendominasi karakteristik subyek penelitian ini. Nyeri perut lebih dari 3 bulan, anemia, status nutrisi, orangtua dispepsia dan kepadatan kapling rumah pada penelitian ini tidak terbukti sebagai faktor risiko terhadap terjadinya PRGE. Namun, pola makan tidak teratur dan komsumsi makan berempah memengaruhi terjadinya gastropati pada lambung anak (p < 0,05). Proporsi positif RUT; 2,2% dan real-time PCR; 8,7%. Kesimpulan: Hasil negatif pada pemeriksaan RUT tidak menyingkirkan terjadinya infeksi H. pylori, terutama pada pasien dalam terapi proton pump inhibitor (PPI). Pemeriksaan lanjutan menggunakan real-time PCR dianjurkan untuk mendukung diagnosis ini.
Background: The prevalence of detected Helicobacter pylori infection of children in Indonesia was 8%-52%. Gastroesophageal reflux was the dominant symptom and might be attributable to H. pylori infection which reduced quality of life. Current definitive diagnosis was using esophagogastroduodenoscopy (EGD). Rapid Urease Test (RUT) was used in bedside setting for H. pylori detection, however its accuracy was still unkown. Objectives: This study was done to determine the positive proportion of RUT on gastric biopsy specimens and real-time PCR. Moreover, this study explored the characteristics of clinical and demographic features, and examined the risk factors in children with GERD (gastroesophageal reflux disease) who underwent diagnostic EGD. Methods: This is a cross-sectional study on 46 children diagnosed as GERD, admitted to the RSCM and MMC Hospital. All subject underwent RUT, real-time PCR and histopathology examination. Results: Most subjects are girls, more than 10-18 years with low parental education dominated the proportion of subject included in this study. According to abdominal pain more than 3 months, anemia, nutritional status, parental dyspepsia and crowded household were not proven to be risk factors for increase of GERD. However, irregular feeding habit and consumption of spicy foods were be associated with gastropathy in child’s gastric mucosa (p < 0,05). The positive proportion of RUT was 2.2% and real-time PCR was 8.7%. Conclusion: The negative result of RUT could not rule out of H. pylori infection, especially in patients with proton pump inhibitor (PPI) therapy. Further examination using real-time PCR is needed to support the diagnosis.
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Medical diagnosis is the initial stage in solving a person's condition and disease. One method that is widely used now is the Polymerase Chain Reaction (PCR). The use of thermal cycler device material in the PCR reaction affects the time required in the process. With the advancement of microfluidic technology, thermal cycler chips with microfluidic systems have been developed to increase the speed of PCR reactions. This study discusses several materials and geometries used as PCR thermal cycler reactions. COMSOL Multiphysics 5.3 application used to simulate two PCR designs, block-type thermal cycles (TCP design 1), and microfluidic type thermal cycles (TCP design 2). The results obtained are the saturation time for TCP design 1 using aluminum material for 29 seconds for heating and 26 seconds for safety, copper for 37 seconds for heating and 35 seconds for cooling, nickel for 51 seconds for heating and 53 seconds for heating, silver for 26 seconds for heating and cooling, and PDMS for 1480 seconds for heating and cooling. In TCP design 1, when aluminum was used, saturation time is obtained to heat the reagent for 32 seconds and 35 seconds to cool. In TCP PCR design 2 (a) which directly uses PDMS, obtained time to saturate the reagent heating is 3.2 seconds and 4.3 seconds to cool, whereas in TCP design 2 (b) it takes time to heat the reagent for 4.3 seconds and 4.6 seconds to cool down.
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