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Abstrak :
Thalassemia merupakan penyakit anemia hemolitik yang diturunkan dan penyakit genetik yang paling sering didapati di dunia. Terapi dengan transfusi dan terapi kelasi pada pasien thalassemia memberikan angka survival yang lebih panjang. Salah satu komplikasi transfusi berkala adalah peningkatan kadar besi yang terakumulasi pada hipofisis. Hipogonadotropik hipogonadisme yang memiliki gambaran klinis keterlambatan pubertas merupakan abnormalitas utama pada sistem endokrin pasien thalassemia anak. Pencitraan MRI berguna menilai deposit besi hipofisis. Tujuan: Mengetahui kemampuan sekuens T2 dan T2 relaksometri dalam menilai deposit besi di hipofisis yang memiliki gambaran klinis keterlambatan pubertas. Metode: Menggunakan desain komparatif studi potong lintang (comparative cross sectional) dengan data primer, minimal sampel 28 pasien. Analisis data dalam penetuan titik potong menggunakan metode reciver operating curve (ROC) kemudian dihitung tingkan sensitivitas dan spesifitasnya. Hasil: Nilai T2 dan T2 relaksometri hipofisis pada kelompok pubertas terlambat lebih rendah secara bermakna dibandingkan kelompok pubertas normal. Titik potong T2 relaksometri hipofisis untuk membedakan pubertas terlambat dan normal yakni 78,15 ms dengan perkiraan sensitivitas dan spesifitas masing-masing 92,9% dan 75,0%. Titik potong T2 relaksometri hipofisis untuk membedakan pubertas terlambat dan normal yakni 20,19 ms dengan perkiraan sensitivitas dan spesifitas keduanya adalah 100%. Kesimpulan: Nilai T2 dan T2 relaksometri hipofisis dapat meningkatkan peran MRI dalam mendeteksi status laju pubertas pada pasien transfusion dependent thalassemia sehingga pasien thalassemia dengan deposit besi yang berat di hipofisis serta prediksi keterlambatan pubertas dapat mendapatkan terapi yang lebih optimal. ......Thalassemia is an inherited hemolytic anemia disease and is a genetic disease most commonly found in the world. Treatment with transfusion and chelation therapy in thalassemia patients provides a longer survival rate. One of periodic transfusion complications is an increase in iron in the pituitary. Hypogonadotropic hypogonadism which has a clinical picture of delayed puberty is a major abnormality in the endocrine system in pediatric thalassemia patients. MRI imaging is useful in assessing iron deposits in the pituitary. Purpose: To determine the ability of T2 and T2 relaxometry sequences of pituitary in assessing pituitary iron deposits which have a clinical picture of delayed puberty Methods: Using a comparative cross sectional design with primary data, with minimum sample of 28 patients. Analysis of data in determining the cut point was using the reciver operating curve (ROC) method and then calculated the sensitivity and specificity. Result : T2 and T2 relaxometry values of pituitary iron deposit in the delayed puberty group were significantly lower than in the normal puberty group. The T2 relaxometry cut-off point for pituitary iron deposit to differentiate delayed and normal puberty is 78.15 ms with estimated sensitivity and specificity of 92.9% and 75.0%, respectively. The T2 relaxometry cut-off point for pituitary iron deposit to delayed and normal puberty is 20.19 ms with an estimated sensitivity and specificity of both is 100%. Conclutions: T2 and T2 relaxometry values of pituitary iron deposit can enhance the role of MRI in detecting the rate of puberty in patients with transfusion dependent thalassemia so patients with severe pituitary iron deposit and whom predicted with delayed puberty could have optimal therapy.

Abstrak :
ABSTRAK
Pubertas terlambat merupakan salah satu komplikasi utama pada pasien thalassemia mayor. Penyebab utama pubertas terlambat pada pasien thalassemia mayor adalah penumpukan besi pada kelenjar hipofisis. Selain itu, anemia kronis pada pasien thalassemia mayor juga dapat menyebabkan pubertas terlambat. Tujuan: Penelitian ini bertujuan untuk mengetahui hubungan antara profil besi dan kadar hemoglobin pra-transfusi dengan status pubertas pasien thalassemia mayor remaja di Pusat Thalassemia RSCM. Metode: Penelitian ini merupakan studi cross-sectional yang melibatkan 47 pasien thalassemia mayor dengan rentang usia 13-18 tahun untuk pasien perempuan dan 14-18 tahun untuk pasien lelaki di Pusat Thalassemia RSCM. Profil besi subjek ditentukan dari kadar feritin serum dan saturasi transferin subjek. Status pubertas subjek ditentukan berdasarkan Tanner Staging. Hasil & Diksusi: Berdasarkan kadar feritin serum, terdapat 47 (100%) subjek yang mengalami kelebihan besi, dengan 35 (75%) diantaranya mengalami kelebihan besi berat. Nilai median feritin serum subjek adalah 3645 (1415-12636) ng/mL. Berdasarkan saturasi transferin, sebesar 36 (77%) subjek mengalami kelebihan besi, dengan nilai median saturasi transferin sebesar 85 (28-100)%. Terdapat 42 (89%) subjek yang mengalami anemia, dengan nilai median kadar hemoglobin pra-transfusi sebesar 8,0 (4,8-9,5) g/dL. Pubertas terlambat ditemukan pada delapan (17%) subjek. Secara statistik, tidak terdapat hubungan yang bermakna antara feritin serum dengan status pubertas (p = 0,183), saturasi transferin dengan status pubertas (p = 0,650), dan kadar hemoglobin pra-transfusi dengan status pubertas (p = 0,932). Berdasarkan hasil tersebut, profil besi dan kadar hemoglobin pra-transfusi tidak berhubungan dengan status pubertas pasien thalassemia mayor remaja di Pusat Thalassemia RSCM.

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ABSTRAK
Introduction Delayed puberty is a major complication in thalassemia major patients. Delayed puberty occurs due to accumulation of iron in the pituitary gland. In addition, chronic anemia in thalassemia major patients can cause delayed puberty.Objectives This study aims to find the association between iron profile and pre transfusion hemoglobin level with pubertal status in adolescent thalassemia major patients in Thalassemia Centre RSCM.Methods This was a cross sectional study that involved 47 thalassemia major patients aged 13 to 18 years for female patients and 14 to 18 years for male patients in Thalassemia Centre RSCM. Iron profile was determined from serum ferritin level and transferrin saturation. Pubertal status was determined by Tanner Staging.Results Discussion Based on serum ferritin level, 47 100 subjects had iron overload, in which 35 75 subjects had severe iron overload. The median of serum ferritin level was 3645 1415 12636 ng mL. Based on transferrin saturation, 36 77 subjects had iron overload. The median of transferrin saturation was 85 28 100 . Forty two 89 subjects were found anemic. The median of pre transfusion hemoglobin level was 8,0 4,8 9,5 g dL. Delayed puberty occurred in eight 17 subjects. Statistically, no significant associations were found between serum ferritin level and pubertal status p 0.183 , transferrin saturation and pubertal status p 0.650 and pre transfusion hemoglobin level and pubertal status p 0,932 . Based on the results, iron profile and pre transfusion hemoglobin level are not associated with pubertal status in adolescent thalassemia major patients in Thalassemia Centre RSCM.