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"ASBTRACTPurpose: Very few studies have investigated the efficacy of ganglionated plexus ablation during the conventional maze procedure. In this study, we sought to evaluate its additive effect in reducing recurrent atrial fibrillation after concomitant maze surgery.Methods: A retrospective study was conducted of 79 patients who underwent Cox maze IV concomitantly with open-heart surgery with (GP group) or without (Maze group) ganglionated plexus mapping. All active ganglionated plexuses were ablated. The two groups were compared and their follow-up data were analyzed.Results: Active ganglionated plexuses were found in 81% of patients who underwent ganglionated plexus mapping. The rates of freedom from atrial fibrillation at 1 year in the GP and Maze groups were 77 and 75%, respectively. The cumulative freedom from atrial fibrillation at follow-up (27.7 ± 17.3 months) was comparable in the two groups (p = 0.427). A multivariate analysis revealed that persistent atrial fibrillation for more than 90 months was an independent predictor of recurrent atrial fibrillation.Conclusion: Ganglionated plexus ablation with Cox maze IV did not reduce the incidence of recurrent atrial fibrillation in comparison to Maze alone."

"Tujuan penelitian ini untuk melihat karakteristik elektrofisiologi dan hasil ablasi frekuensi radio (AFR) pada flutter atrium (FLA) yang belum tersedia hingga saat ini di Indonesia. Tiga buah kateter elektroda multipolar dimasukkan perkutan ke dalam jantung lalu ditempatkan di sinus koronarius (SK), berkas His dan mengitari anulus trikuspid. Kateter ablasi 8 mm digunakan untuk AFR linier cavotrikuspid isthmus (CTI) pada FLA tipikal dan kebalikan tipikal. Blok bidireksional ditentukan atas dasar pemanjangan waktu konduksi dinding lateral bawah ke ostium SK dan sebaliknya lebih dari 90 mdet, dan/atau dengan cara pemacuan diferensial. Terdapat 27 subyek dengan 30 FLA terdokumentasi yang terdiri dari 19 tipikal, 5 tipikal terbalik dan 6 atipikal. Hanya 9 pasien yang tidak mempunyai penyakit jantung struktural. Rerata panjang siklus takikardia (PST) adalah 261,79 ± 42,84, 226,5 ± 41,23, dan 195,4 ± 9,19 mdet masing-masing untuk FLA tipikal, kebalikan tipikal dan atipikal (p = 0,016). Konduksi CTI menempati 60% dari PST atau rerata 153,0 ± 67,37 mdet. Aktivasi SK terbagi menjadi 3 jenis yaitu proksimal ke distal, distal ke proksimal dan fusi. AFR pada FLA tipikal dan tipikal terbalik sukses sebanyak 96 % dengan tingkat kekambuhan 4,5 % pada rerata masa pengamatan 13 ± 8 bulan. Pada populasi penelitian ini jenis FLA terbanyak adalah FLA tipikal. Kebanyakan subyek menderita penyakit jantung struktural. AFR sangat efektif menyembuhkan FLA tipikal dan kebalikan tipikal. (Med J Indones 2007; 16:151-8)

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This study aimed to elaborate the electrophysiology characteristics and radiofrequency ablation (RFA) results of atrial flutter (AFL) which has not been established in Indonesia. Three multipolar catheters were inserted percutaneously and positioned into coronary sinus (CS), His bundle area and around tricuspid annulus. Eight mm ablation catheter was used to make linear ablation at CTI of typical and reverse typical AFL. Bidirectional block was confirmed by conduction time prolongation of more than 90 msec from low lateral to CS ostium and vice versa, and/or by means of differential pacing. Thirty AFL from 27 patients comprised of 19 typical AFL, 5 reverse typical AFL and 6 atypical AFL enrolled the study. Mean tachycardia cycle length (TCL) were 261.8 ± 42.84, 226.5 ± 41.23, and 195.4 ± 9.19 msec, respectively (p = 0.016). CTI conduction time occupied up to 60% of TCL with mean conduction time of 153.0 ± 67.37 msec. CS activation distributed to three categories which comprised of proximal to distal, distal to proximal and fusion activation. Only nine of 27 patients had no structural heart disease. RFA of symptomatic typical and reverse typical AFL demonstrated 96% success and 4.5 % recurrence rate during 13 ± 8 months follow up. Typical AFL is the predominant type of AFL in our population. The majority of AFL cases suffered from structural heart disease. RFA was highly effective to cure typical and reverse typical AFL. (Med J Indones 2007; 16:151-8)"

"Ablasi AV junction terbukti efektif pada pasien atrial fibrillasi (AF) yang refrakter dengan isolasi vena pulmonalis maupun antiarimia."

"Ablasi A V junction terbukti efektif pada pasien atrial flbrilasi (AF) yang refrakter dengan isolasi vena pulmonalis inaupun antiaritmia. Akan tetapi pada hampir 15% kasus ablasi AV junction dengan teknik konvensional (sisi-kanan) gagal. Penelitian ini berinjuan mempelajari karakterislik potensial berkas His pada ablasi AV junction secara konvensional inaupun dengan teknik sisi-kiri. Dua puluh pasien AF yang simtomatik dan refrakter terhadap antiarimia (rerata umur 60,539,28 tahun, 11 wanita) dilakukan ablasi AV junction dengan teknik konvensional. Bila 10 kali aplikasi energi frekuensi-radio tidak dapat menyebabkan blok A V total, maka ablasi dilakukan melalui sisi-kiri. Amplitud berkas His yang terekam pada tempat ablasi dianalisa. Seluruh pasien berhasil diablasi, 17 dengan cam konvensional dan 3 pasien degan teknik sisi-kiri setelah teknik konvensional gagal. Amplitud berkas His pada sisi-kiri lebih besar daripada sisi-kanan yang berkesesuaian (16,0 ±4,99 mm vs. 6,9 ±4,02 mm, p = 0,001, 95% IK -14,0 to -4,3). Dengan nilai titikpotong amplitude berkas His sisi-kanan > 4,87 mm didapatkan sensitifitas 8!.3% dan spesiftsitas 53,8% untuk keberhasilan ablasi pada sisi yang bersangkutan. Teknik sisi-kiri pada ablasi AV junction efektif bila teknik konvensional gagal. Pada pasien dengan amplitud berkas His sisi-kanan yang rendah (< 4, 87 mm) dianjurkan untuk ablasi dengan teknik sisi-kiri untuk menghindari pemberian energi frekuensi-radio yang tidak perlu. (MedJ Indones 2006; 15:109-14)

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AV junction ablation has been proven effective to treat symptomatic atrial fibrillation refractory to antiarrhythmias or fail of pulmonary vein isolation. However, about 15% of conventional right-sided approach AV junction ablation failed to produce complete heart block. This study aimed to characterize His bundle potential at ablation site during conventional or left-sided approach of AV junction ablation. Twenty symptomatic AF patient (age of 60.5 ±9.28 and 11 are females) underwent conventional AV junction ablation. If 10 applications of radiofrequency energy are failed, then the ablation was performed by left-sided approach. Seventeen patients are successfully ablated by conventional approach. In 3 patients, conventional was failed but successfully ablated bv left-sided approach. The His bundle amplitude at ablation site was significantly larger in left-sided than correspondence right-sided (16.0 ±4.99 mm vs. 6.9 ±4.02 mm respectively, p = 0.001, 95% Cl -14.0 to -4.3). ROC analysis of His bundle potential amplitude recorded from right-sided revealed that cut off point of > 4.87 mm given the sensitivity of 81.3% and specificity of 53.8% for successful right-sided approach of AV junction ablation. In case of failed conventional approach, the left-sided approach is effective for AV junction ablation. An early switch to the left-sided approach may avoid multiple RF applications in patients with a low amplitude His-bundle potential (< 4.87 mm). (MedJIndones 2006; 15:109-14)"

"Tujuan: AF merupakan aritmia yang paling banyak ditemukan dalam praktek klinis dan berkaitan dengan peningkatan risiko stroke jangka panjang, gagal jantung dan segala sebab kematian. Ablasi kateter pada AF merupakan modalitas yang relatif baru untuk konversi AF ke irama sinus. Studi ini bertujuan untuk mengetahui efektifitas ablasi kateter pada tipe AF campuran. Metode: 30 pasien (umur 52 ± 8 tahun) yang terdiri dari 19 paroksismal and 11 AF kronik dilakukan ablasi kateter radiofrekuensi dipandu oleh sistem pemetaan elektroanatomikal CARTO?. Digunakan pendekatan ablasi bertahap dengan isolasi vena pulmonalis (IVP) sebagai intinya. Tambahan ablasi berupa garis atap, garis mitral isthmus, complex fractionated atrial electrogram (CFAE), garis septal dan sinus koronarius dilakukan secara bertahap bila diperlukan. Pengamatan terhadap rekurensi AF dilakukan selama 1 tahun. Hasil: IVP sirkumferensial berhasil dilakukan pada semua pasien kecuali 1 orang. Rata-rata masa pengamatan 11,5 bulan. Lebih dari 80% pasien masih dalam irama sinus pada akhir masa pengamatan dengan 62% di antaranya bebas dari obat anti-aritmia. Tidak terjadi komplikasi mayor pada serial pasien dalam studi ini. Kesimpulan: Ablasi radiofrekuensi kateter yang dipandu oleh sistem pemetaan electroanatomikal efektif dan aman pada tipe AF campuran.

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AbstractAim: AF is the most common arrhythmia in clinical practice and associated with an increased long-term risk of stroke, heart failure, and all-cause mortality. Catheter ablation of AF is relatively new modality to convert AF to sinus rhythm. This study was aimed to elaborate efficacy of catheter ablation in mixed type of AF. Methods: Thirty patients (age of 52 ± 8 yo) comprised of 19 paroxysmal and 11 chronic AF underwent radiofrequency catheter ablation guided by electroanatomical CARTO? mapping system. We used step wise ablation approach with circumferential pulmonary vein isolation (PVI) as a cornerstone. Additional ablation comprised of roof line, mitral isthmus line, complex fractionated atrial electrogram (CFAE), septal line and coronary sinus ablation was done respectively if indicated. All patients were followed up to 1 year for AF recurrence. Results: Circumferential PVI was successfully performed in all patients but one. Average follow up period was 11.5 months. More than 80% of all patients remain in sinus rhythm at the end of follow period which 62% of them were free from any anti-arrhythmic drug. No major complication in all patients series. Conclusion: Radiofrequency ablation guided with electroanatomical mapping is effective and safe in mixed type of AF."

"Latar Belakang: FA merupakan salah satu masalah aritmia yang paling umum terjadi dengan prevalensi yang terus meningkat seiring dengan penuaan populasi dan peningkatan angka kejadian penyakit kardiovaskular. Manajemen FA dengan ablasi mampu mengurangi gejala pasien, namun angka rekurensi FA yang masih tinggi (10- 30%) pasca ablasi terus menjadi bahan penelitian dengan mekanisme yang masih belum dipahami. Remodelling atrial memiliki peran penting dalam progresi FA. Ketebalan dinding atrium kiri yang bervariasi menyebabkan adanya perbedaan propagasi dan penetrasi dari tindakan ablasi, sehingga penilaian ketebalan dinding atrium kiri penting dalam proses tindakan ablasi FA.Tujuan: Mengetahui hubungan antara ketebalan atrium kiri dengan rekurensi aritmia atrial pasca ablasi FA.Metode: Penelitian ini merupakan studi kohort retrospektif dengan menggunakan data pasien ablasi fibrilasi atrium di RSJPD Harapan Kita pada periode Januari 2018- Januari 2023. Evaluasi rekurensi aritmia atrial dilakukan dengan EKG 12 sadapan, pemeriksaan Holter monitoring 24 jam. Penilaian ketebalan dinding atrium kiri dilakukan dengan pemeriksaan CT scan kardiak. Dilakukan analisis bivariat dan multivariat antara ketebalan dinding atrium kiri dengan rekurensi aritmia atrial pasca ablasi.Hasil: Dari 127 pasien pasca ablasi FA, didapatkan rata-rata pasien berusia 55 tahun dengan jenis kelamin laki-laki 64%. Berdasarkan tipe FA didapatkan 65% merupakan FA paroksismal. Ketebalan dinding atrium kiri (OR 1,56; IK 95% 1,20-2,03; p value < 0,001) dan diameter atrium kiri berdasarkan ekokardiografi (OR 1,07; IK 95% 1,00- 1,14; p value 0,0038) berhubungan secara signifikan dengan rekurensi aritmia atrial pasca ablasi.

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Background: Atrial fibrillation (AF) is the most common arrhythmia and its prevalence increases with age. Management of catheter ablation is effective in reducing symptom burden but its recurrence rate is still considered high (10-30%) with unclear mechanism. Atrial remodeling plays important role in AF progression. The left atrial wall thickness (LAWT) is heterogenous which cause different propagation and penetration of ablation power. Recurrence of arrhythmia atrial after catheter ablation for atrial fibrillation (AF) has been considered as a common phenomenon but its mechanism and implication in long-term outcome has not been fully understood.

Objective: We aimed to clarify the relation between left atrial wall thickness and arrhythmia atrial recurences after ablation

Metode: A total of 127 patients with history of catheter ablation for AF were consecutively recruited from period of January 2018- January 2023. Recurrences was defined as recurrence of atrial tachyarrhythmia using surface electrocardiogram and Holter monitoring. LAWT was assessed using cardiac CT scan. The statistical analysis was performed to find the relationship between the left atrial wall thickness and arrhythmia atrial recurrences.

Results: From 127 patients post catheter ablation for AF, patients included mean age of 55 years old and 64% patients are male. Based on type of AF, most of patients (65%) are paroxysmal AF. The mean left atrial wall thickness (OR 1,56; IK 95% 1,20- 2,03; p value < 0,001) and diameter of left atrium from echocardiography (OR 1,07; IK 95% 1,00-1,14; p value 0,0038) were significantly associated with arrhythmia atrial post catheter ablation.

Conclusion: Left atrial wall thickness assessed with CT cardiac increased 4.4 times arrhythmia atrial recurrences post catheter ablation of AF."

"Latar Belakang: Isolasi vena pulmonalis merupakan strategi utama dalam tindakan ablasi fibrilasi atrium (FA). Namun, angka kekambuhan pasca ablasi FA masih signifikan. Substrat atrial seperti low voltage zone (LVZ) menggambarkan perubahan struktur dari atrium kiri. Low voltage zone berhubungan erat dengan kekambuhan pasca ablasi FA. Terdapat beberapa sistem skoring yang dapat memprediksi kekambuhan FA pasca ablasi FA yang menggunakan diameter atrium kiri, namun belum ada sistem skoring yang menggunakan indeks volume atrium kiri sebagai prediktor kekambuhan FA pasca ablasi. Skor ZAQ menggunakan IVAK MSCT, jenis kelamin perempuan dan usia ≥ 65 tahun untuk mempredikisi adanya LVZ.Tujuan: Penelitian ini bertujuan untuk mengetahui apakah terdapat perbedaan kekambuhan lambat pasca ablasi FA antara kelompok skor ZAQ < 2 dibandingkan dengan ≥2.Metode: Penelitian ini merupakan studi kohor retrospektif dengan menggunakan data sekunder dari pasien FA yang dilakukan isolasi vena pulmonalis pertama kali di RSJPDHK pada periode Januari 2015 sampai Agustus 2020. Dilakukan rekonstruksi IVAK dengan MSCT untuk menghitung skor ZAQ masing – masing pasien dan dilakukan evaluasi elektrokardiogram (EKG) 12 lead atau holter dalam waktu 3 sampai dengan 12 bulan pasca tindakan ablasi untuk melihat kekambuhan lambat.Hasil: Terdapat 77 pasien ablasi FA yang memenuhi kriteria inklusi dan eksklusi. Selama periode observasi, didapatkan 23 pasien (30%) yang mengalami kekambuhan lambat pasca ablasi. Dari hasil analisis regresi logistik multivariat, skor ZAQ bukan merupakan prediktor kekambuhan lambat pasca ablasi FA (OR 3.31; IK 95% 0.065 – 17.011; p=0.551). Yang menarik adalah kami menemukan dua variabel yang merupakan prediktor independen kekambuhan lambat pasca ablasi FA, yaitu IVAK MSCT ≥65.5 ml/m2 (OR 3.91; IK 95% 1.140-13.393; p=0.030) dan tipe FA non paroksismal (OR 5.00; IK 95% 1.552-16.150; p=0.007), sedangkan pemberian amiodarone pasca tindakan dapat memberikan efek protektif (OR 0.13; IK 95% 0.024-0.719, p=0.019).Kesimpulan: Tidak terdapat perbedaan kekambuhan lambat pasca ablasi FA antara kelompok skor ZAQ <2 dengan ≥2.

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Background: Pulmonary vein isolation (PVI) is the main target for AF ablation. Unfortunately, the recurrence rate remains significant. Atrial substrate such as low voltage zones reflect the structural change of the left atrium. This LVZ is strongly associated with recurrence. There have been some scoring systems that predict AF reccurence after ablation using left atrial diameter, however there is no scoring system using left atrial volume index (LAVI) as a predictor for AF recurrence. ZAQ score employed MSCT LAVI, female sex, and age ≥ 65 years to predict the presence of LVZ.

Objective: This study aims to investigate the difference of late recurrence after AF ablation between ZAQ score <2 and ≥2.

Method: This study was a retrospective cohort study using secondary data collected from AF patients who underwent their first PVI during the period of January 2015 to August 2020 in National Cardiovascular Center Harapan Kita Hospital. LAVI reconstruction with MSCT was conducted to calculate ZAQ score of each patients. Twelve leads electrocardiogram (ECG) evaluation or Holter monitor within 3 to 12 months after ablation was conducted to evaluate late reccurence.

Result: There were 77 patients who met the inclusion and exclusion criteria. During the observation period, 23 patients (30%) experienced late recurrence post ablation. From multivariate logistic regression analysis, ZAQ score is not a predictor of late recurrence after AF ablation (OR 3.31; CI 95% 0.065 – 17.011; p=0.551). Interestingly, we found two variables which were independent predictors of late recurrence after AF ablation, i.e. MSCT LAVI ≥ 65.5 ml/m2 (OR 3.91; CI 95% 1.140-13.393; p=0.030) and non paroxysmal AF (OR 5.00; CI 95% 1.552-16.150; p=0.007), while amiodarone administration post-ablation had protective effect toward late recurrence (OR 0.13; CI 95% 0.024-0.719; p=0.019).

Conclusion: There was no difference in late recurrence after AF ablation between the ZAQ score group <2 and ≥2."

"Latar Belakang. Pada pasien katup mitral yang disertai fibrilasi atrium (FA), bedah ablasi dapat dilakukan bersamaan dengan bedah katup mitral. Dalam penelitian ini kami melakukan evaluasi keberhasilan jangka pendek terhadap pasien-pasien katup mitral yang dilakukan bedah ablasi FA di Pusat Jantung Nasional Harapan Kita Jakarta. Kami mempunyai hipotesis bahwa indeks volume atrium kiri pra-bedah dan pasca-bedah berhubungan dengan keberhasilan bedah ablasi FA jangka pendek.Metodologi. Merupakan studi retrospektif. Semua pasien yang dilakukan bedah ablasi bersamaan dengan koreksi katup mitral dengan kriteria standard pada periode bulan Maret 2012-Januari 2015 dimasukkan dalam penelitian ini. Data pasien diambil dari catatan medik rumahsakit, termasuk data klinis, EKG, laboratorium, echocardiografi sebelum dan sesudah bedah ablasi. Evaluasi keberhasilan jangka pendek dilihat ada tidaknya FA selama masa hospitalisasi sampai 1 bulan pasca-bedah.Hasil. Selama periode penelitian, sebanyak 46 pasien ikut dalam penelitian ini {laki-laki 19 (41,3%) dan wanita 27 (58,7%)}.Rerata umur 42,7 ± 9,6 tahun. Lima orang meninggal segera setelah bedah ablasi (8,7%). Tiga puluh pasien tetap dalam irama sinus pada akhir bulan pertama sesudah tindakan bedah (65,2%). Rerata indeks volume atrium kiri pra-bedah pada pasien yang tetap dalam irama sinus pada akhir bulan pertama lebih kecil dibanding dengan yang tetap dalam irama FA, tetapi secara statistik tidak bermakna (156,83 ± 84,3 vs 189,4 ± 92 ml/m2, p=0,256). Rerata indeks volume atrium kiri pasca-bedah pada kelompok pasien yang tetap dalam irama sinus lebih kecil dibanding dengan pasien dalam irama FA pada akhir bulan pertama ( 95,2 ± 55,4 vs 126 ± 43,9 ml/m2, p=0,029) secara statistik berbeda bermakna. . Sembilan belas pasien menggunakan obat penyekat beta (41,3%) ternyata 3 pasien menjadi FA (15,8%) sedang yang tidak menggunakan obat penyekat beta (27 pasien, 58,7%) ternyata 13 pasien (48%) yang secara statistik bermakna (p=0,023). Analisis multivariat dengan menggunakan analisis regresi logistik menunjukkan bahwa indeks volume atrium kiri pasca-bedah adalah berpengaruh terhadap kejadian FA jangka pendek yang secara statistik bermakna (OR 1,02 (IK 95% 1,001-1,04, p=0,043)). Demikian pula penggunaan obat penyekat beta (OR 0,02 (IK 95% 0,001-0,364, p=0,008)).Kesimpulan. Angka keberhasilan jangka pendek bedah ablasi FA pada pasien katup mitral adalah 65,2 %. Indeks volume atrium kiri pasca bedah berpengaruh terhadap keberhasilan jangka pendek bedah ablasi FA. Temuan tambahan lain dalam penelitian ini yaitu penggunaan penyekat beta pasca bedah berpengaruh terhadap keberhasilan jangka pendek bedah ablasi FA.

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Background. Surgical ablation is commonly done in patients with chronic atrial fibrillation (AF) undergo mitral valve surgery. This study was designed to identify the relationship between pre-operative and post-operative left atrial volume indices (LAVi) and short term success of restoration sinus rhythm after surgical AF ablation concomitant with mitral valve surgery.

Methods. Data were collected retrospectively from our hospital medical record . These included electrocardiograms, laboratory, echocardiography before and after surgical ablation in all patients. Each patient was evaluated at the outpatient hospital clinic. The AF recurence was evaluated from the ECG recording within 1 month after surgery. Left atrial volume was calculated using modified Simpson's method. Volume was corrected by surface area.

Results: From March 2012 through January 2015, there were 46 patients who underwent surgical AF ablation concomitant with mitral valve surgery. The mean age was 42.7 ± 9,6 year-old. {males were 19 (41.3%) and females were 27 (58.7%)} Early mortality was found in 5 patients (8.7%). Sinus rhythm (SR) was restored and maintained within first month in 30 patients (65.2%) of the 46 patients. The pre-operative LAVi was smaller in patients who was successfully restored in SR compared with those who was unsuccessfully restored in sinus rhythm, but statistically insignificant (156.83 ± 84.3 vs 189.4 ± 92 ml/m2, p=0.256). However, post-operative LAVi was smaller and statistically significant in those patients who was successfully restored in SR compared with those who was unsuccessfully restored in SR (95.2 ± 55.4 vs 126 ± 43.9 ml/m2, p=0,029). Multivariate analysis using logistic regression analysis showed post-operative LAVi (OR was 1.02 (CI 95% 1.001-1.04, p=0.043) and beta blocker usage early post hospitalization (OR was 0.02 (CI 95% 0.001-0.364, p=0.008) were independent predictor of maintaining SR after surgical AF ablation concomitant with mitral valve surgery.

Conclusions: Short term success rate of the surgical AF ablation in patients with chronic AF and concomitant mitral valve surgery was 65,2%. Post-operative LAVi and post operative beta blocker therapy was independent predictor of maintaining SR after surgical AF ablation concomitant with mitral valve surgery."

"Latar belakang: Fibrilasi atrium meningkatkan morbiditas pasien dengan penyakit katup mitral. Insidens fibrilasi atrium pada pasien dengan penyakit katup mitral cukup tinggi karena proses pembesaran atrium dan remodelling. Semakin besar atrium, semakin lanjut juga proses remodelling, keberhasilan bedah ablasi-pun semakin kecil. Populasi pasien di Indonesia memiliki dimensi atrium kiri yang sudah besar. Kami mencoba melakukan penelitian untuk melihat pengaruh dimensi atrium kiri terhadap keberhasilan bedah ablasi di Rumah Sakit Jantung dan Pembuluh darah Nasional Harapan Kita, Indonesia.Metode: Penelitian kohort retrospektif dengan mengambil seluruh data 59 pasien yang memenuhi kriteria inklusi dan ekslusi dari 85 pasien yang menjalani bedah ablasi pada Januari 2012 sampai dengan Oktober 2016 di Rumah Sakit Jantung dan Pembuluh darah Nasional Harapan Kita, Indonesia. Data diambil dari rekam medis pasien yang menjalani operasi koreksi katup mitral dengan atau tanpa koreksi katup trikuspid dengan bedah ablasi set lesi bilateral, alat tunggal radiofrekuensi bipolar. Pengamatan irama jantung dilakukan pada minggu pertama, bulan ketiga, dan bulan keenam pascaoperasi. Analisis data menggunakan Mann-Whitney U test dan logistik regresi.Hasil: Diameter atrium kiri preoperasi pada kedua kelompok keluaran hasil bedah ablasi bulan ketiga dan bulan keenam berbeda bermakna nilai p 0,05 , bulan ketiga nilai p >0,05 , dan bulan keenam nilai p >0,05 pascaoperasi. Analisis multivariat seluruh variabel perancu pada tiap waktu pengamatan tidak didapatkan hubungan yang secara statistik bermakna. Pada kelompok pasien dengan diameter atrium kiri ge;60mm, angka konversi irama menjadi sinus 69,22.Kesimpulan: Semakin besar diameter atrium kiri preoperasi, semakin tinggi angka rekurensi AF pada pasien penyakit jantung katup mitral. Bedah ablasi tetap dapat menjadi suatu pertimbangan terapi pada pasien dengan diameter atrium kiri yang besar diameter ge;60mm .

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Backgrounds: Atrial fibrillation causing many thromboemboli complications. Incidence of atrial fibrillation is high among patients with mitral valve disease. The proccess of enlargement and remodelling of atria were believed to increase failure in ablation surgery. Patients population in Indonesia had enormous size of atria in the time of surgery. We report the correlation between preoperative left atrial dimension with the outcome of the surgery.

Methods: This is a cohort retrospective study. We collected data from medical records of all 59 patients underwent modified Cox Maze IV with single device radiofrequency bipolar and biatrial lesion with mitral valve with or without tricuspid valve intervention throughout January 2012 to October 2016. We observed the outcome in first week, third month, and sixth month after the surgery. This study based on Mann Whitney U test and logisctic regression.

Results: There is significant difference in the preoperative left atrial diameter between two outcome groups AF and non AF at third month and sixth month p value 0.05. Multivariate analysis reveals no significant correlation among confounding factors at all observation time. The successful sinus rhythm conversion among patients with preoperative left atrium diameter greater than 60mm is 69,22.

Conclusions: Preoperative left atrial diameter affects the outcome of ablation surgery. The bigger the diameter, less success rhythm conversion. But in our population, ablation surgery still can be considered among patients with big left atrial size. "

"Latar Belakang: Fibrilasi Atrium (FA) merupakan salah satu kelainan terbanyak di bidang irama jantung. Pasien FA memiliki resiko stroke dan gagal jantung lebih tinggi dari pasien tanpa FA. Prevalensi FA berkisar 1-2% di dunia dan di Rumah sakit Jantung dan Pembuluh darah Harapan Kita berkisar 9,8%. Salah satu strategi pengobatan dengan mengonversi irama kembali menjadi sinus baik dengan medikamentosa atau elektrikal. Strategi pengobatan elektrikal dengan kateter radiofrekuensi ablasi merupakan opsi dengan keberhasilan cukup tinggi. Angka Rekurensi FA jangka panjang masih cukup tinggi berkisar 40-60%. Beberapa faktor telah diketahui dapat mempengaruhi terjadinya rekurensi fibrilasi atrium jangka panjang. Faktor-faktor tersebut diharapkan dapat digunakan untuk dibuat suatu sistem skor prediksi rekurensi Fibrilasi atrium jangka panjang. Tujuan: Membuat sistem skor dapat memprediksi rekurensi FA jangka panjang. Mendapatkan angka kejadian rekurensi FA jangka panjang.Metode: Penelitian ini merupakan studi kohort retrospektif yang dilakukan di Rumah Sakit Penyakit Jantung dan Pembuluh darah Harapan Kita. Penelitian ini memantau titik awal yaitu dilakukan kateter ablasi radiofrekuensi sampai dengan pemantauan 12 bulan atau terjadi kejadian rekurensi FA dalam periode pemantauan. Di lakukan uji bivariate semua variabel independen dan perancu, dilanjutkan multivariat, analisis kurva Kaplan-Meier pada variabel yang lolos dalam uji multivariate, dan dilanjutkaan pembuatan sistem skoring.Hasil: Penelitian ini mendapatkan angka rekurensi FA jangka panjang 48,5%.Tiga variabel yang lolos dalam uji multivariat yaitu rekurensi awal FA (HR 3,32; IK: 1,82-6,04), jenis FA (HR 2,17; IK 1,02-3,87), DAKi (HR 1,83; IK 1,21-3,26). Analisa Kaplan-Meier didapatkan penurunan angka bebas rekurensi FA pada rekurensi awal FA, jenis FA persisten, DAKi ≥40,5 mm (43%, 32%,30%). Nilai kemungkinan rekurensi FA masing-masing skor yaitu 0: 17%, 1: 38%, 2: 58%, 3: 76%, 4: 90%. Nilai Area under curve (AUC) dari total skor adalah 0,79 dengan nilai kalibrasi yaitu 0,138.Kesimpulan: Sistem skoring KHALID (reKurensi jangka panjang Hasil ablasi Atrial fibriLasi InDonesia)dapat dipakai untuk memprediksi rekurensi FA jangka panjang pada pasien yang menjalani fibrilasi atrium nonvalvular yang menjalani kateter radiofrekuensi ablasi. Angka rekurensi FA jangka panjang yaitu 48,5%.

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Background: Atrial Fibrillation (AF) is one of the most abnormalities in the field of arrhythmia. AF patients had a higher risk of stroke and heart failure than patients without AF. Prevalence of AF ranges from 1-2% in the world and in the Cardiovascular Harapan Kita Hospital range from 9.8%. One of the treatment strategies is converting the rhytm back into a sinus either with medical or electriacal. The strategy of electrical treatment with catheter ablation radiofrequency is a option with considerable success. Long-term recurrence of AF are still quite high ranging from 40-60%. Several factors have been known to affect long term recurrence of AF. These factors are expected to be used to establish a system of score to predict of long term AF recurrence. Objective: To create a scoring system can predict long-term AF recurrence. To get data of prevalence longterm AF recurrence. Method: This is a retrospective cohort study conducted in Cardiovascular Harapan Kita Hospital. This study monitors the starting point of Radiofrekuency ablation catheter up to 12 months monitoring or recurrence of AF event within the monitoring period. In doing bivariate test all independent and confounding variables, followrd by multivariate, Kaplan-Meier curve analysis on the variables that passed in multivariate test, followed by making scoring system.Results: This Study obtained a prevalence of long-term recurrence AF of 48.5%. Three variables that passed in multivariate test were early recurrence (HR 3.32;CI 1,82-6,04), FA type (HR 2.17;CI 1.02-3.87), Left atrium diameter (HR 1.83; CI 1.21-3.26). Kaplan-Meier curve analysis obtained a decrease in free of AF recurrence numbers in early recurrence, persisten AF type, left Atrium diameter ≥ 40.5 mm (43%, 32%, 30%). The probabilities to get AF recurrence based on score is 0: 17%, 1: 38%, 2: 58%, 3: 76%, 4: 90%. The value of Area under Curve (AUC) of total score is 0.79 with a calibration valure of 0.138. Conclusion: The KHALID scoring system can be used to predict long term of AF recurrence in patient with nonvalvular AF undergoing radiofrequency ablation catheter. The Prevalence of long-term of AF recurrence is 48.5%."