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"Latar Belakang: Penyakit paru interstisial (ILD) merupakan salah satu manifestasi sklerosis sistemik (SSc) pada paru dan faktor mortalitas utama SSc. SSc-ILD meningkatkan angka mortalitas 5 tahun pasien SSc sebesar 3 kali lipat. Hampir dua pertiga pasien SSc-ILD dengan kelainan minimal pada high resolution computed tomography (HRCT) toraks memperlihatkan progresivitas signifikan dalam 2 tahun. Model prediksi progresivitas SSc-ILD yang tersedia, yakni GAP (gender, age, and lung physiology) dan SADL (smoking history, age, and diffusion capacity of the lung), terbukti memiliki nilai prognostik yang baik. Model prognostik yang melibatkan parameter HRCT toraks dan Modified Rodnan Skin Score (mRSS) diharapkan dapat membantu seleksi pasien SSc-ILD yang memerlukan pemantauan ketat atau terapi dini untuk mencegah progresivitas.Metode: Studi ini melibatkan pasien SSc-ILD yang menjalani pemeriksaan HRCT toraks awal dan evaluasi di Rumah Sakit Umum Pusat Nasional Dokter Cipto Mangunkusumo pada periode Januari 2016 hingga Desember 2021. Dilakukan volumetri kuantitatif menggunakan piranti lunak 3DSlicer® pada HRCT toraks awal untuk menghasilkan persentase volume paru abnormal, high attenuation area (HAA), dan low attenuation area (LAA) yang selanjutnya dianalisa sebagai faktor prognostik. Pola ILD pada HRCT toraks awal dan nilai mRSS masing-masing subyek diidentifikasi dan dianalisa sebagai faktor prognostik progresivitas SSc-ILD. Progresivitas SSc-ILD dikategorikan menjadi progresif dan non-progresif berdasarkan selisih persentase volume paru abnormal antara HRCT toraks awal dan evaluasi.Hasil: Perbedaan rerata yang bermakna ditemukan pada volume paru abnormal, volume HAA, dan volume LAA, nilai mRSS antara SSc-ILD progresif dan non-progresif (p < 0,001). Berdasarkan receiver operating characteristic curve, ditetapkan nilai titik potong dari masing-masing variabel. Nilai titik potong persentase volume paru abnormal ditetapkan sebesar 32,82% dengan nilai sensitivitas 100% dan spesifisitas 93,8%. Nilai titik potong persentase volume HAA ditetapkan sebesar 19,76% dengan nilai sensitivitas 93,8% dan spesifisitas 93,8%. Nilai titik potong persentase volume LAA ditetapkan sebesar 9,89% dengan nilai sensitivitas 62,5% dan spesifisitas 62,5%. Nilai titik potong mRSS ditetapkan sebesar 18,5 dengan sensitivitas 93,8% dan spesifisitas 100%. Tidak ada perbedaan proporsi pola ILD antara kedua kelompok tersebut (p 0,220).Kesimpulan: Volume paru abnormal > 32,82%, volume HAA > 19,76%, volume LAA > 9,89%, dan/atau nilai mRSS > 18,5 merupakan prediktor progresivitas SSc-ILD. Hasil volumetri kuantitatif abnormalitas paru pada HRCT toraks dan nilai mRSS merupakan faktor prognostik progresivitas SSc-ILD yang mudah diperoleh dan diaplikasikan dalam praktik klinis sehari-hari.

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Background: Interstitial pulmonary disease (ILD) is one of the manifestations of systemic sclerosis (SSc) in the lungs and the main mortality factor of SSc. SSc-ILD multiplies the 5-year mortality rate of SSc patients by 3 times. Nearly two-thirds of SSc-ILD patients with minimal abnormalities in chest high resolution computed tomography (HRCT) showed significant progressivity within 2 years. The available prediction models of SSc-ILD progression, namely GAP (gender, age, and lung physiology) and SADL (smoking history, age, and diffusion capacity of the lungs), have been proven to demonstrate excellent prognostic values. Prognostic models involving chest HRCT parameters and Modified Rodnan Skin Score (mRSS) are expected to aid the selection of SSc-ILD patients who require close monitoring or early therapy to prevent progression.

Method: This study involved SSc-ILD patients who underwent initial and follow-up chest HRCT examination and evaluation at the National Central General Hospital of Doctor Cipto Mangunkusumo in the period from January 2016 to December 2021. Quantitative volumetric measurement was performed using 3DSlicer® software on the initial chest HRCT to yield abnormal pulmonary volume, high attenuation area (HAA) volume, and low attenuation area (LAA) volume percentage which were subsequently analyzed as prognostic factors. ILD patterns in the initial chest HRCT and mRSS values of each subject were identified and analyzed as prognostic factors of SSc-ILD progression. The progression of SSc-ILD is classified into progressive and non-progressive based on the abnormal pulmonary volume percentage difference between the initial and follow-up chest HRCT.

Result: Significant mean differences were found in abnormal lung volume percentage, HAA volume percentage, LAA volume percentage, and mRSS values between progressive and non-progressive SSc-ILD groups (p < 0.001). Based on the receiver operating characteristic curve, the cut-off point value of each variable is determined. The cut-off point value of the percentage of abnormal pulmonary volume was set at 32.82% with a sensitivity value of 100% and a specificity of 93.8%. The cut point value of the HAA volume percentage was set at 19.76% with a sensitivity value of 93.8% and a specificity of 93.8%. The LAA volume percentage cut point value was set at 9.89% with a sensitivity value of 62.5% and a specificity of 62.5%. The mRSS cut-off value was set at 18.5 with a sensitivity of 93.8% and a specificity of 100%. There was no significant in the proportion of ILD patterns between the two groups (p 0.220).

Conclusion: Abnormal lung volume > 32.82%, HAA volume > 19.76%, LAA volume > 9.89%, and/or mRSS value > 18.5 are predictors of SSc-ILD progression. Quantitative volumetric results of pulmonary abnormalities in chest HRCT and mRSS values are prognostic factors of SSc-ILD progression that are easily obtained and applied in daily clinical practice."

"As a member of 18 glycosyl hydrolase(GH), chitotriosidase (Chitinase 1, CHIT1) is a true chitinase mainly expressed in the differentiated family polarized macrophages. CHIT1 is an immune mediator that digest the cell walls of chitin-containing eukaryotic pathogens, such as fungi. These However CHIT1 is dysregulated in granulomatous and fibrotic interstitial lung diseases characterized by inflammation and tissue remodeling. These include tuberclosis, sarcoidosis, idiopathic pulmonary fibrosis interstitial lung diseases(SSc-ILD) and chronic obstructive of lung diseases(COPD). CHIT1 serum correlates with the progression or the severity of these diseases, suggesting a potential use of CHIT1 as a biomarker or a therapeutic target. concentration genetically modified mice demonstrate that CHIT1 enhances TGF-A1 receptor Recent studies with genetically modified mice demonstrate that CHIT1 enhances TGF-beta1 receptor expression and signaling, suggesting a role in initiating or amplifying the response to organ injury and repair. This additional activity is independent of its enzymatic activity. These studies suggest that CHIT1 serves a bridging function; it is both an innate immune mediator and regulator of COPD enzymatic These studies suggest that CHIT1 serves a bridging and tissue remodeling. This review will focus on recent data linking CHIT1 to the pathogenesis of inflammation, interstitial lung disease, and COPD."

"Latar Belakang: Jumlah kasus KPKBSK diperkirakan 85% dari seluruh kasus kanker paru dan 40% diantaranya adalah jenis adenokarsinoma. Sebanyak 10%-30% pasien adenokarsinoma mengalami mutasi EGFR dan mendapatkan terapi EGFR-TKI. Mayoritas pasien KPKBSK memiliki respons dan toleransi baik terhadap terapi EGFR- TKI tetapi sebagian kecil pasien mengalami penyakit paru interstisial akibat EGFR- TKI. Penelitian ini bertujuan untuk mengetahui proporsi gambaran penyakit paru interstisial pada pasien KPKBSK dengan terapi EGFR-TKI di RSUP Persahabatan.Metode: Penelitian ini merupakan penelitian observasional analitik dengan pendeketan kohort retrospektif yang dilakukan bulan Januari 2021 hingga Juni 2022. Subjek penelitian adalah pasien KPKBSK yang mendapatkan terapi EGFR-TKI. Subjek penelitian dipilih sesuai kriteria inklusi dan eksklusi. Pengambilan data melalu data sekunder berupa rekam medis dan hasil CT scan toraks pasien yang kontrol di poliklinik onkologi RSUP Persahabatan.Hasil: Pada penelitian ini diperoleh 73 subjek penelitian, pasien KPKBSK dengan mutasi EGFR yang mendapatkan terapi EGFR-TKI di RSUP Persahabatan. Sebanyak 12 dari 73 subjek penelitian mengalami gambaran ILD yang dievaluasi berdasarkan CT scan toraks RECIST I dan II dengan karakteristik jenis kelamin laki-laki (22,2%), kelompok usia 40-59 tahun (19,4%), perokok (24,1%), indeks brinkman berat (42,9%) dan mendapatkan terapi afatinib (26,1%). Proporsi gambaran ILD pada pasien KBPKBSK dengan terapi EGFR-TKI adalah opasitas retikular (58,3%), parenchymal band (33,3%), ground-glass opacities (25%), traction bronchiectasis (25%) dan crazy paving pattern (8,3%). Hasil analisis bivariat dan multivariat menunjukkan tidak terdapat perbedaan antara faktor-faktor seperti jenis kelamin, usia, jenis EGFR-TKI, riwayat merokok, indeks brinkman, riwayat penyakit paru dan tampilan status terhadap gambaran ILD.Kesimpulan: Gambaran ILD pada pasien KPKBSK dengan terapi EGFR-TKI meliputi opasitas retikular, parenchymal band, ground-glass opacities, traction bronchiectasis dan crazy paving pattern. Tidak terdapat perbedaan bermakna secara statistik antara faktor-faktor yang memengaruhi terhadap gambaran ILD.

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Background: The number of cases of NSCLC is estimated around 85% of all lung cancer cases and 40% among them are adenocarcinoma. Approximately 10%-30% of adenocarcinoma patients have EGFR mutations and receive EGFR-TKI therapy. The majority of NSCLC patients have a good response and tolerance to EGFR-TKI therapy, but a small group of patients experience EGFR-TKI induced interstitial lung disease. This study aims to determine the proportion of features of interstitial lung disease ini NSCLC patients treated with EGFR-TKI at Persahabatan Hospital.

Methods: This study was an analytic observational with a retrospective cohort approach that was conducted from January 2021 until June 2022. The subject were NSCLC patients who received EGFR-TKI treatment. The inclusion and exclusion criteria were used to determine which subjects will be included in the study. Data collection through secondary data from medical record and chest CT scan results of patients controlled at oncology polyclinic at Persahabatan Hospital.

Result : In this study, there were 73 subjects of NSCLC with EGFR mutations and received EGFR-TKI therapy at Persahabatan Hospital. There were 12 out of 73 subjects had ILD features which were evaluated based on RECIST I and II chest CT scan with predominant of male (22.2%), age group 40-59 years old (19.4%), smokers (24.1%), severe Brinkman index (42.9%) and received afatinib (26.1%). The proportion of ILD features in NSCLC patients with EGFR-TKI therapy are reticular opacities (58.3%), parenchymal bands (33.3%), ground-glass opacities (25%), traction bronchiectasis (25%) and crazy paving pattern (8.3%). The results of bivariate and multivariate analyzes showed that there was no differences between factors such as sex, age, type of GEFR-TKI, smoking history, Brinkman index, history of lung disease and performance status with features of ILD.

Conclusion: Features of ILD in NSCLC patients with EGFR-TKI therapy include reticular opacities, parenchymal bands, ground-glass opacities, traction bronchiectasis and crazy paving pattern. There is no statistically significa"

"Serat kolagen merupakan salah satu komponen yang berperan penting dalam memberi struktur pada dinding alveolus dan mempengaruhi proses fisiologis paru. Penelitian ini bertujuan mengetahui hubungan antara jumlah serat kolagen dalam jaringan interstisial dengan ketebalan septum interalveolar pada perkembangan paru tikus neonatus. Desain penelitian yang digunakan adalah metode observasional analitik dengan studi cross-sectional (n=24). Perhitungan serat kolagen berdasarkan warna hijau atau biru keunguan pada satu lapang pandang (pewarnaan Trichrome Mason), sedangkan septum interalveolar diukur berdasarkan proporsi. Serat kolagen cenderung menetap (terdistribusi <30%), sedangkan ketebalan septum interalveolar menurun pada usia perkembangan neonatus usia 2 hari (0,434±0,145), 4 hari (0,412±0,064), 10 hari (0,394±0,118) dan 16 hari (0,407±0,058). Korelasi Spearman untuk distribusi serat kolagen dan ketebalan septum interalveolar bersifat positif berkekuatan sedang dan bersifat signifikan (r = 0,586; p = 0,003). Dapat disimpulkan bahwa dalam proses perkembangan paru neonatus, perubahan distribusi serat kolagen berhubungan dengan perubahan ketebalan septum interalveolar.

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Collagen fibre is one of the most important structure in alveolus, which influences lung physiology. This study aimed to find the correlation between distribution of interstitial collagen fiber and thickness of interalveolar septum in Sprague Dawley neonatal rats’ lung. We used observational analytic method with cross-sectional study (n=24). Collagen fibre was calculated based on green or purplish blue (Trichrome Mason staining), and interalveolar septum was measured by proportional method. The distribution of collagen fibre between all ages of neonatal rats have no difference (low distributed/<30%). However, interalveolar septum thickness decrease as the age increase (0,434±0,145 on day 2; 0,412±0,064 on day 4; 0,394±0,118 on day 10 and 0,407±0,058 on day 16). Spearman correlation of collagen fibre distribution and interalveolar septum thickness showed a medium and significant positive correlation (r = 0.586; p = 0,003). In conclusion, during neonatal rats’ lung development, there is a correlation between distribution of collagen fibre and thickness of interalveolar septum."

"Penelitian ini bertujuan untuk mengetahui perbandingan efektifitas biaya antara Puskesmas yang menerapkan PAL dengan yang tidak menerapkan PAL dalam penanganan Tuberkulosis Paru di Wilayah Kota Administratif Jakarta Timur, dengan melakukan perhitungan menggunakan metode Activity Based Costing (ABC) untuk mendapatkan biaya per aktifitas. Penilaian efektifitas berdasarkan perbandingan antara penjumlahan komponen biaya pada masing-masing alternatif dengan output penelitian yang meliputi efektifitas pengobatan, Quality Adjusted Life Years (QALY's) serta Kegagalan/drop out yang dapat dihindari. Hasil penelitian menunjukkan bahwa Puskesmas PAL lebih efektif dalam penanganan Tuberkulosis Paru berdasarkan output kegagalan/drop out yang dapat dihindari.

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This research purposes to compare cost effectivity between Center of Health which implements PAL and Non PAL in treatment Pulmonary Tuberculosis on administrative district East Jakarta. It uses Activity Based Costing (ABC) method to obtain cost per activity. The effectivity evaluation is based on comparison between total cost component at each alternatives with output consists of medical treatment effectiveness, Quality Adjusted Life Years (QALY's) and prevented failure/drop out. The result shows that Puskesmas with PAL is more effective in Pulmonary Tuberculosis treatment based on prevented failure/drop out."

"Tesis ini menganalisis sistem pencatatan dan pelaporan Practical Approach to Lung Health (PAL) pada 6 Puskesmas di Kabupaten Bogor pada tahun 2013. Penelitian ini menggunakan pendekatan kualitatif dengan wawancara mendalam pada 11 informan dan memeriksa laporan PAL selama bulan Januari-April 2013 pada 6 Puskesmas dengan memperhatikan ketepatan waktu laporan, kelengkapan laporan, dan keakuratan. Hasil penelitian menunjukkan bahwa ada perbedaan dalam beberapa faktor input, proses dan output dalam pelaksanaan pencatatan dan pelaporan PAL di Puskesmas yang diteliti. Puskesmas yang memenuhi indikator tampak lebih terorganisasi dengan adanya Tim PAL yang disahkan oleh Kepala Puskesmas, semua pihak tampak berkerjasama dalam melaksanakan pencatatan dan pelaporan PAL setiap hari, dan mempunyai komitmen yang tinggi baik Kepala Puskesmas, kordinator PAL, pelaksana harian dan petugas pencatatan dan pelaporan. Untuk itu, masih dibutuhkan perbaikan secara komprehensif dan terintegrasi melibatkan banyak pihak yang terkait sistem pencatatan dan pelaporan PAL di Puskesmas Kabupaten Bogor.

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This thesis discusses Recording and Reporting System of Practical Approach to Lung Health (PAL) in 6 Primary Health Center (Puskesmas) at Bogor District 2013. This research uses qualitative method by conducting in-depth interview to 11 key informants and checking PAL report for 6 Puskesmas since January until April 2013, by considering the timeliness, the completeness of the report, and accuracy. The result shows that there are differences in input, process and output in the the implementation of recording and reporting system. Puskesmas that meet the indicator are more organized with the PAL team authorized by the Head of Puskesmas, all parties cooperate in implementing the PAL recording and reporting every day, and everybody has commitment. Therefore, it is need to have comprenhensive and integrated improvements by involving others stakeholders related to recording and reporting PAL system in Puskesmas."

"Polusi udara dan kebiasaan merokok pada masyarakat meningkatkan resiko terjadinya Penyakit Paru Obstruksi Kronis (PPOK). Penyakit ini merupakan penyakit obstruksi saluran nafas yang bersifat kronis, progresif, dan banyak dialami oleh lansia. Selain masalah fisik, ansietas merupakan masalah yang paling sering terj pada pasien PPOK. Ansietas memberikan dampak yang sangat besar terhadap kemampuan fungsional dan angka kekambuhan pasien. Karya Ilmiah ini bertujuan untuk menggambarkan hasil asuhan keperawatan psikososial masalah ansietas pada pasien lansia yang mengalami penyakit PPOK. Metode yang digunakan yaitu studi kasus, dengan melakukan asuhan keperawatan terhadap pasien PPOK yang mengalami ansietas. Hasil studi kasus ini menunjukan bahwa intervensi membina hubungan saling percaya, latihan relaksasi nafas dalam dan distraksi dapat menurunkan tingkat kecemasan pada pasien. Pengembangan format pengkajian masalah psikososial serta peningkatan kemampuan perawat dalam melakukan asuhan keperawatan masalah psikososial, menjadi rekomendasi dari studi kasus ini.

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Air pollutant and smoking behavior increase the risk of Chronic Obstructive Pulmonary Disease (COPD). COPD is a chronic, progressive respiratory tract obstruction which is often experienced by elderly. Despite physical problems, anxiety highly affect functional ability, and patient exacerbation.

The goal of this study is to describe the psychosocial aspect of nursing care to elderly patient with COPD experiencing anxiety.

The method of this study is case study, by applying nursing care for patient with COPD, experiencing anxiety.

The result of this study show that building trust relationship with patient and family, relaxation and distraction therapy can reduce level of anxiety. Development of assessment tool and improvement of nursing skill to care patient with psychosocial problems, are recommended of this study."

"ABSTRAK Latar belakang : Penelitian ini merupakan studi awal untuk mengukur kapasitasdifusi paru DLCO-SB ipada pasien PPOK di RSUP Persahabatan Jakarta untukmengetahui prevalens penurunan nilai DLCO pada pasien PPOK.Metode : Penelitian ini menggunakan desain studi potong lintang (cross sectional study) pada pasien PPOK yang berkunjung di Poliklinik Asma-PPOK RSUPPersahabatan Jakarta. Dilakukan uji spirometri dan DLCO pada pasien PPOKyang diambil secara konsekutif antara bulan Mei-Juli 2015. Komorbiditas jugadicatat.Hasil : Uji Spirometri and DLCO dilakukan pada 65 subjek didapatkan 7 subjek (10,8%) termasuk kedalam PPOK Grup A, 19 subjek (29,2%) PPOK Grup B, 21subjek (32,3%) PPOK grup C dan 18 subjek (27,7%) PPOK grup D. rerata usia64,15 (45-89) tahun;rerata VEP1% 46,05%, rerata nilai DLCO 19,42ml/menit/mmHg dan rerata DLCO % adalah 72.00%. prevalens penurunanDLCO pasien PPOK adalah 56,92% (37/65 subjek) sedangkan 28 subjek dengannilai DLCO normal. Ditemukan 15 subjek (23,07%) dengan penurunan ringan, 18subjek (27.69%) penurunan sedang dan 4 subjek (6,15%) dengan penurunan berat.Ditemukan 47 subjek (72,3%) memiliki komorbid. Terdapat hubungan bermaknaantara grup PPOK, derajat spirometri, VEP1, IMT dan komorbiditas dengan nilaihasil uji DLCO. Tidak terdapat hubungan bermakna antara nilai DLCO denganjenis kelamin, umur, riwayat merokok, Indeks Brinkmann, obstruksi-restriksi danlama terdiagnosis PPOK.Kesimpulan : Proporsi penurunan nilai DLCO pada pasien PPOK adalah 56,92%. Terdapat hubungan bermakna antara grup PPOK, derajat spirometri,VEP1, IMT dan riwayat TB dengan nilai hasil uji DLCO. Tidak terdapathubungan bermakna antara nilai DLCO dengan jenis kelamin, umur, riwayatmerokok, Indeks Brinkmann, obstruksi-restriksi, komorbid dan lama terdiagnosisPPOK.ABSTRACT Background and the aim of study : This is a preliminary study to measureDLCO-SB in COPD patients in Persahabatan Hospital. The aim of the study is toknow the magnitude of disturbance in diffusing capacity of the lung in COPDpatients.Methods : This was a cross sectional study in which COPD patients attending COPD-Asthma clinic in Persahabatan Hospital Jakarta were performed spirometryand DLCO-SB consecutively between May 2015?July 2015. Comorbiditiesconditions were also recorded.Results : Spirometry and DLCO-SB measurement were conducted on 65 COPDsubjects of which 7 subjects (10.8%) were COPD Group A, 19 subjects (29.2%)were Group B, 21 subjects (32.3%) were COPD group C and 18 subjects (27.7%)were COPD group D. The mean age was 64.15 (45-89); mean FEV1% was46.05%, mean DLCO measured was 19.42 ml/min/mmHg and the mean DLCO%was 72.00%. The prevalence of decreasing in diffusing capacity of the lung inCOPD patients was 56.92% (37 subjects) While 28 subjects were normal. Therewere 15 subjects (23.07%) with mild decrease in DLCO, 18 subjects (27.69%)were moderate decrease and 4 subjects (6.15%) with severe decrease. 47 subjects(72.3%) had comorbid conditions. There was significant correlation between grupCOPD, GOLD COPD grade, VEP1, BMI and comorbidities with magnitude ofdecreasing DLCO value. There was no correlation between DLCO value with sex,smoking history, Brinkmann index, age, obstruction-mix criteria, length of COPDperiod. Conclusion : The proportion of decreasing in DLCO in COPD patients are56.92%. There is significant correlation among the group of COPD, GOLDCOPD grade, VEP1, BMI and previous TB history with magnitude of decreasingDLCO value. There is no correlation between DLCO value with sex, smokinghistory, brinkmann index, age, obstruction-mix criteria, comorbidities and lengthof COPD period. ;Background and the aim of study : This is a preliminary study to measureDLCO-SB in COPD patients in Persahabatan Hospital. The aim of the study is toknow the magnitude of disturbance in diffusing capacity of the lung in COPDpatients.Methods : This was a cross sectional study in which COPD patients attending COPD-Asthma clinic in Persahabatan Hospital Jakarta were performed spirometryand DLCO-SB consecutively between May 2015?July 2015. Comorbiditiesconditions were also recorded.Results : Spirometry and DLCO-SB measurement were conducted on 65 COPDsubjects of which 7 subjects (10.8%) were COPD Group A, 19 subjects (29.2%)were Group B, 21 subjects (32.3%) were COPD group C and 18 subjects (27.7%)were COPD group D. The mean age was 64.15 (45-89); mean FEV1% was46.05%, mean DLCO measured was 19.42 ml/min/mmHg and the mean DLCO%was 72.00%. The prevalence of decreasing in diffusing capacity of the lung inCOPD patients was 56.92% (37 subjects) While 28 subjects were normal. Therewere 15 subjects (23.07%) with mild decrease in DLCO, 18 subjects (27.69%)were moderate decrease and 4 subjects (6.15%) with severe decrease. 47 subjects(72.3%) had comorbid conditions. There was significant correlation between grupCOPD, GOLD COPD grade, VEP1, BMI and comorbidities with magnitude ofdecreasing DLCO value. There was no correlation between DLCO value with sex,smoking history, Brinkmann index, age, obstruction-mix criteria, length of COPDperiod. Conclusion : The proportion of decreasing in DLCO in COPD patients are56.92%. There is significant correlation among the group of COPD, GOLDCOPD grade, VEP1, BMI and previous TB history with magnitude of decreasingDLCO value. There is no correlation between DLCO value with sex, smokinghistory, brinkmann index, age, obstruction-mix criteria, comorbidities and lengthof COPD period. ;Background and the aim of study : This is a preliminary study to measureDLCO-SB in COPD patients in Persahabatan Hospital. The aim of the study is toknow the magnitude of disturbance in diffusing capacity of the lung in COPDpatients.Methods : This was a cross sectional study in which COPD patients attending COPD-Asthma clinic in Persahabatan Hospital Jakarta were performed spirometryand DLCO-SB consecutively between May 2015?July 2015. Comorbiditiesconditions were also recorded.Results : Spirometry and DLCO-SB measurement were conducted on 65 COPDsubjects of which 7 subjects (10.8%) were COPD Group A, 19 subjects (29.2%)were Group B, 21 subjects (32.3%) were COPD group C and 18 subjects (27.7%)were COPD group D. The mean age was 64.15 (45-89); mean FEV1% was46.05%, mean DLCO measured was 19.42 ml/min/mmHg and the mean DLCO%was 72.00%. The prevalence of decreasing in diffusing capacity of the lung inCOPD patients was 56.92% (37 subjects) While 28 subjects were normal. Therewere 15 subjects (23.07%) with mild decrease in DLCO, 18 subjects (27.69%)were moderate decrease and 4 subjects (6.15%) with severe decrease. 47 subjects(72.3%) had comorbid conditions. There was significant correlation between grupCOPD, GOLD COPD grade, VEP1, BMI and comorbidities with magnitude ofdecreasing DLCO value. There was no correlation between DLCO value with sex,smoking history, Brinkmann index, age, obstruction-mix criteria, length of COPDperiod. Conclusion : The proportion of decreasing in DLCO in COPD patients are56.92%. There is significant correlation among the group of COPD, GOLDCOPD grade, VEP1, BMI and previous TB history with magnitude of decreasingDLCO value. There is no correlation between DLCO value with sex, smokinghistory, brinkmann index, age, obstruction-mix criteria, comorbidities and lengthof COPD period. "