Hasil Pencarian  ::  Simpan CSV :: Kembali

"Latar belakang: Stenosis mitral (SM) berat gradien rendah didefinisikan dengan mitral valve area (MVA) <1.5 cm2 dan gradien transmitral <10 mmHg. Perubahan fungsi atrium kiri merupakan salah satu mekanisme yang mendasari SM berat gradien rendah, dimana dapat dianalisis dengan strain atrium kiri. Komisurotomi Mitral Transkateter Perkutan (KMTP) adalah pilihan utama pasien dengan SM berat tanpa kontraindikasi. Tujuan: Membandingkan perubahan nilai strain atrium kiri dengan Peak Atrial Longitudinal Strain (PALS) antara pasien SM berat gradien rendah dan tinggi pasca KMTP. Metode: Pasien SM berat yang berhasil dilakukan KMTP dibagi menjadi dua kelompok, yaitu gradien rendah dan gradien tinggi. Dengan menggunakan ekokardiografi speckle tracking, nilai PALS diukur pada 24-48 jam sebelum KMTP dan 7-14 hari setelah KMTP. Kemudian nilai PALS antara kedua kelompok dianalisis menggunakan uji statistik Mann-Whitney. Hasil: Terdapat 32 pasien (46%) pada kelompok gradien rendah dan 39 pasien (54%) pada kelompok gradien tinggi. Subjek dengan SM berat gradien rendah cenderung lebih tua, memiliki irama jantung fibrilasi atrium, memiliki baseline MVA yang lebih besar, dan memiliki nilai net atrioventricular compliance (Cn) yang lebih tinggi. Nilai PALS rendah pada kedua kelompok dan mengalami perbaikan pasca KMTP [8%(2–23) vs. 11%(3–27), p<0.0001]. Tidak terdapat perbedaan antara PALS sebelum KMTP, setelah KMTP, dan perbedaannya (delta) antara kedua kelompok. Analisis subgrup pasien dengan irama jantung sinus menunjukan perbedaan nilai PALS antara kelompok gradien rendah dan tinggi pre KMTP (15±4% vs. 11±5%, p=0.030) dan post KMTP (19±4% vs. 15±4%, p=0.019). Analisis multivariat menemukan bahwa irama jantung merupakan variabel independent terkuat dalam mempengaruhi nilai PALS. Kesimpulan: Fungsi reservoir atrium kiri, yang dinilai dengan PALS mengalami penurunan pada pasien SM berat dan meningkat pasca KMTP, tanpa dipengaruhi oleh baseline MVG.

---

Background: Low gradient severe mitral stenosis (LGMS) is defined as mitral valve area (MVA) less than ≤ 1.5 cm2 and mitral valve gradient (MVG) < 10 mmHg. Functional changes in the left atrium (LA) are one of the mechanisms that follow LGMS, which can be assessed using strain analysis. Balloon Mitral Valvotomy (BMV) is the treatment of choice for suitable MS patients without contraindications. Objective: This study compared changes in Peak Atrial Longitudinal Strain (PALS) following BMV between low- and high-gradient severe MS patients. Methods: We included MS patients who underwent a successful BMV and divided into LGMS group and high-gradient mitral stenosis (HGMS) group. Using speckle tracking echocardiography, PALS was assessed 24–48 hours before and 7–14 days after BMV procedure. Then, the PALS values were compared between those two groups using Mann- Whitney. Results: There were 32 patients (46%) in the low-gradient MS group and 39 patients (54%) in the high-gradient MS group. Subjects with LGMS were older, had more atrial fibrillation, had a larger baseline MVA, and had higher net atrioventricular compliance (Cn). The PALS values were low in both groups and improved significantly following BMV [8%(2–23) vs. 11%(3– 27), p<0.0001]. There were no differences in PALS values before, after BMV, and its absolute changes between the groups. Subgroup analysis in subjects with sinus rhythm revealed PALS differences between low and high-gradient MS pre (15±4% vs. 11±5%, p=0.030) and post- BMV (19±4% vs. 15±4%, p=0.019). Multivariate analysis identified heart rhythm as the strongest independent variable for PALS values. Conclusion: Left atrial reservoir function, as assessed by PALS, was reduced in patients with severe MS and was increased following BMV, irrespective of their baseline MVG."

"Tesis ini membahas pengajaran keterampilan membaca menggunakan metode peer-assisted learning strategies PALS dan metode tradisional. Penelitian ini merupakan penelitian kuasi eksperimental dengan ancangan pre-test post-test control group dan teknik sample purposive sampling. Data diperoleh dari pre-test, post-test, kuesioner motivasi membaca, kuesioner persepsi pemelajar terhadap metode PALS dan wawancara. Hasil penelitian menunjukkan bahwa baik metode PALS maupun metode tradisional sama-sama dapat meningkatkan kemampuan membaca teks recount secara signifikan namun kelompok eksperimen lebih unggul. Walaupun demikian metode PALS terbukti meningkatkan motivasi membaca pemelajar dan penerapan metode ini juga mendapat respon positif dari mereka. Oleh karena itu, peneliti merekomendasikan penggunaan metode PALS dalam pengajaran keterampilan.

---

This study examines the teaching of reading skills using peer assisted learning strategies PALS method and the teaching of reading skills using traditional method. This study is quasi experimental with pre test post test control group and uses purposive sampling. The data were obtained from the results of the pre test, post test, the questionnaire of reading motivation and the students perception toward PALS method and the interview.

The study shows both methods improve the students reading skills significantly but the students in the experimental group achieved a higher score compared with the students in the control group. In addition, PALS method has increased the students reading motivation and the students taught with PALS method had a positive perspective toward the implementation of this method. Thus, the researcher recommends the use of PALS method in improving the reading skills of students in Indonesia."