Tesis

Pengaruh Penerapan Protokol Buli Di IPTOR RSCM Terhadap Cakupan Volume Dan Toksisitas Radiasi Usus Halus Pada Pasien Kanker Serviks Saat Menjalani Radioterapi Eksterna = The Impact of Bladder Protocol to Irradiated Bowel Volume and Acute Bowel Toxicity in Cervical Cancer Patients Undergoing External Beam Radiotherapy at RSCM.

Tujuan : Mengetahui pengaruh penerapan protokol buli di RSCM terhadap dosimetri dan toksisitas radiasi usus pada pasien kanker serviks saat menjalani radiasi eksterna. Metode : Penelitian adalah penelitian kohort retrospektif pada 236 subjek penelitian yang menjalankan radioterapi eksterna di IPTOR RSCM pada tahun 2019 – 2021. Subjek terbagi menjadi tiga kategori menurut perlakuan yaitu pasien tanpa protokol buli sebanyak 84 pasien, dengan protokol buli 300 - < 500 mL sebanyak 35 pasien dan protokol buli 500 mL sebanyak 67 pasien. Uji normalitas menggunakan Kolmogorov-Smirnov, perbandingan rerata menggunakan Kruskal Wallis dan Mann Whittney. Perbandingan nominal kategorik menggunakan chi square. Analisis multivariat menggunakan regresi linier dan regresi logistic Hasil : Pasien tanpa diberikan instruksi protokol buli volume buli yang cenderung lebih kecil yaitu median 83,5 mL (min-maks) (29,2 – 570) dibandingkan dengan yang diberikan instruksi protokol buli 300 - < 500 mL yaitu median (min-maks) 91,5 mL (25,6 – 409,4) dan yang diberikan instruksi protokol buli 500 mL yaitu 125 mL (15-462) (P=0,014). Protokol buli juga berpengaruh terhadap proporsi pasien dengan V45 bowel bag < 195 mL, dimana pasien dengan protokol buli 11,12% mencapai V45 bowel bag < 195mL, sedangkan pasien tanpa protokol buli hanya 3,2% yang mencapai V45 bowel bag < 195 mL (P=0,04. CI 95%). Kesimpulan : Protokol buli yang telah diterapkan di IPTOR RSCM terlihat mempunyai pengaruh terhadap volume buli dan V45 bowel bag namun tidak menunjukkan pengaruh terhadap toksisitas akut gastrointestinal bawah.
Kata kunci : Protokol buli, kanker serviks, radioterapi


Objective: To determine the effect of bladder protocol at RSCM to the irradiated bowel volume and acute bowel toxicity in cervical cancer patients underwent external beam radiotherapy. Methods: This was a retrospective cohort study on 236 cervical cancer patients who underwent external radiotherapy at IPTOR RSCM in 2019-2021. Subjects were divided into three bladder protocol categories. Patients without bladder protocol (n=84), with 300 - < 500 mL bladder protocol (n=85) and with 500 mL bladder protocol (n=67). Normality test using Kolmogorov-Smirnov, mean comparison using Kruskal Wallis and Mann Whittney. Comparison of categorical nominal using chi square. Multivariate analysis using linear regression and logistic regression. Results: Patients without bladder protocol had a smaller bladder volume, which median (min-max) was 83.5 mL (29.2 – 570) compared to those who were given a bladder protocol instruction of 300 - < 500 mL which was 91, 5 mL (25.6 – 409.4) and those given 500 mL bladder protocol which median value was 125 mL (15-462) (P=0.014. 95% CI). Bladder protocol also caused more patients to achieve V45 bowel bag < 195 mL which was 11.12% compared to those without bladder protocol which was 3,2% (P=0.04). Conclusion: The bladder protocol that has been applied at IPTOR RSCM seems to influence the bladder volume and V45 bowel bag but did not show an effect on acute lower gastrointestinal toxicity.
Keyword : bladder protocol, cervical cancer, radioterapi