dystrophie otot
TRANSCRIPT
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Distrofi Otot (Muscular Dystrophy)By Irfan Maulana, Ns., M.Kep., Sp.KMB
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Seorang anak usia 7 tahun datang dengan kelemahan progresif dari kedua kaki selama 4 tahun.
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Definisi
Sekelompok gangguan non inflamasi yg diturunkan
degeneratif progresif dan kelemahan otot rangka
tanpa gangguan sistem saraf perifer/saraf pusat
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Klasifikasi
Sex-linked: Duchenne MD, Becker MD,
Emery-Dreifuss MD Autosomal recessive: Limb-Girdle
(LGMD), infantile FSHD Autosomal dominant:
Facioscapulohumeral (FSHD), distal MD, ocular MD, oculopharyngeal MD.
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Duchenne Muscular dystrophy
Guillaume Benjamin Amand Duchenne (French neurologist, 1860s)
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Duchenne Muscular dystrophy
Etiologi single gene
defect Xp21.2 region absent
dystrophin
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Duchenne Muscular dystrophy
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Duchenne Muscular dystrophy
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DMD: pathology
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DMD: Epidemiology paling sering laki-laki, sindrom
Turner 1:3500 kelahiran
hidup laki-laki 1/3 mutasi baru 65% riwayat
keluarga
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DMD: Manifestasi Klinik Onset: usia 3-6
tahun Kelemahan progresif Pseudohipertrofi otot
betis Deformitas tulang
belakang Ganguan
cardiopulmonary Mild – moderat Mitral
Regurgitasi
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Pseudohypertrhophy otot betis, Tip toe gait miring ke depan panggul, lordosis kompensasi
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Hilangnya lordosis saat duduk
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DMD: Diagnosis
Gower’s sign
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DMD: Diagnosis
Gaya berjalan Tdk adanya DTR Ober test Thomas test Meyerson sign Macroglossia Kerusakan
Myocardial IQ ~ 80
Peningkatan CPK (200x)
Perubahan Myopathic pd EMGBiopsi: m. degeneration
Immunoblotting: Tdk adanya dystrophin
Analisis mutasi DNA
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Western blotNormal dystrophin bands (230kD)
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DMD: Riwayat perkembangan penyakit
Perkembangan penyakit perlahan dan terus menerus
Kelemahan otot Dari bawah ->
ekstremitas atas Tidak dapat berjalan:
pd usia 10 tahun (7-12) kematian akibat gagal jantung/paru : 20-30 thn
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DMD: Treatment Prednisolone Dystrophin
replacement Maintain function
Physical Medicine and Rehabilitation (PMR)
orthosis cardiopulmonary
Tx Counselling
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DMD: Treatment .......lanjutan
Pembedahan Foot & ankle: melepas tendon Achillis
& Tibialis posterior Knee: melepas tendon Yount &
hamstring release Hip: Ober, modified Soutter procedure
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An 8-yr-old boyUnable to stand
Percut. TenotomyAchillis tendon
Ambulate with orthosis
DMD: Treatment .......lanjutan
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DMD: Treatment .......lanjutan
Pembedahan Upper extremity: - Spinal deformity: posterior spinal fusion +
pelvis
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Becker muscular dystrophy
Peter Emil Becker (German doctor, 1950s)
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Becker muscular dystrophy
Lebih ringan dari DMD
Etiology cacat tunggal gen Lengan pendek
chromosome X Perubahan ukuran
& penurunan jml dystrophin
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Becker muscular dystrophy
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BMD: Epidemiology
Jarang1: 30.000 kelahiran hidup laki-laki
Tidak terlalu parah Riwayat keluarga: atipikal MD
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BMD: Clinical manifestation
Lebih ringan dibandingkan DMD Onset: usia> 7 tahun Pseudohipertrofi betis Equinous dan varus kaki Kebanyakan mengalami skoliosis Gangguan jantung lebih jarang
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BMD: Diagnosis Sama dengan
DMD Peningkatan CPK
(<200x) Penurunan
dystrophin dan atau b’kurangnya ukuran
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BMD
Riwayat penyakit perkembangan
lebih lambat ambulasi sampai
remaja harapan hidup
lebih lama
Treatment Sama dengan
DMD Fore foot
equinous: melepas plantar, midfoot dorsal-wedge osteotomy
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Emery-Dreifuss muscular dystrophy
Epidemiology Male: typical
phenotype/ dominan
Female carrier: partial
Etiology X-linked
recessive Xq28 Emerin protein
(in neuclear membrane)
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EDMD: Clinical manifestation Kelemahan otot Contracture
Neck extension, elbow (siku), tendon
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EDMD: Clinical manifestation
Umumnya scoliosis: perkembangan lambat
Bradycardia, 1st degree AV block sudden death
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EDMD
Diagnosis Gower’s sign (tdk
bs membungkuk) Mildly/moderately
elevated CPK EMG: myopathic Normal dystrophin
Riwayat penyakit 10 thn pertama:
kelemahan ringan Tahap lanjut:
contracture, cardiac abnormality
50-60 th: dpt berjalan
Prognosis buruk pada obesitas, kontraktur equinus yg tdk diatasi.
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EDMD: Treatment Physical therapy
Prevent contracture: neck, elbow, paravertebral muscles
For slow progress elbow flexion contracture Soft tissue contracture
Achillis lengthening, posterior ankle capsulotomy + anterior transfer of tibialis posterior
Spinal stabilization For curve > 40 degrees
Cardiologic intervention Cardiac pacemaker
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Limb-girdle muscular dystrophy
Eitology Autosomal recessive at chromosome
15q Autosomal dominant at 5q
Epidemiology Common More benign
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Limb-girdle muscular dystrophy
an absence of functional sarcoglycans components of the dystrophin glycoprotein complex (DCG).
Other LGMD result from the absence of functional caveolin-3
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Limb-girdle muscular dystrophy
Clinical manifestation Onset usia: 30 thn
an Mengenai otot
pinggul – bahu
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LGMD
Classification Pelvic girdle
type common
Scapulohumeral type
rare
Diagnosis Same clinical as
DMD/BMD carriers
Moderately elevated CPK
Normal dystrophin
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LGMD
Natural history Slow
progression After onset >
20 y: contracture & disability
Rarely significant scoliosis
Treatment Similar to DMD Scoliosis: mild,
no Rx.
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Fascioscapulohumeral muscular dystrophy
Etilogy Autosomal
dominant Gene defect
(FRG1) Chromosome
4q35 Epidemiology
Female > male
Clinical manifestation Age of onset:
late childhood/ early adult
No cardiac, CNS involvement
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FSMD: Clinical manifestation
Muscle weakness face, shoulder,
upper arm
Sparing Deltoid Distal pectoralis
major Erector spinae
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“Popeye” appearance Lack of facial
mobility Incomplete eye
closure Pouting lips Transverse smile Absence of eye
and forehead wrinkles
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FSMD: Clinical manifestation
Winging scapula Markedly
decreased shoulder flexion & abduction
Horizontal clavicles
forward sloping
Rare scoliosis
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FSMD
Diagnosis PE, muscle
biopsy Normal serum
CPK Natural history
Slow progression
Face, shoulder m. pelvic girdle, tibialis ant
Good life expectancy
Treatment Posterior
scpulocostal fusion/ stabilization (scapuloplexy)
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Distal muscular dystrophy
Autosomal dominant trait
Rare Dysferlin (mb prot)
defect Age of onset: after
45 y
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Distal muscular dystrophy
Initial involvement: intrinsic hands, claves, tibialis posterior
Spread proximally Normal sensation
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DD: Classification Welander distal myopathy Finnish/Markesbery distal myopathy Miyoshi distal myopathy Nonaka distal myopathy Gower: autosomal dominant, Chromosome 14 Hereditary inclusion-body myositis Hereditary inclusion-body myuositis Distal myopathy with vocal cord & pharyngeal
weakness
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Congenital muscular dystrophy
Etiology Autosomal recessive Integrin, fugutin defect
Laminin 2 chainmerosin
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CMD: Epidemiology
Rare Both male and female
Classification Merosin-negative Merosin-positive Neuronal migration
Fukuyama Muscle eye-brain Wlaker-Warburg
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CMD: Clinical manifestation
Stiffness of joint Congenital hip
dislocation, subluxation
Achillis tendon contracture, talipes equinovarus
Scoliosis
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CMD
Diagnosis Muscle Bx:
Perimysial and endomysial fibrosis
Treatment Physical
therapy Orthosis Soft tissue
release Osteotomy
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Nursing Diagnosis Gangguan mobilitas fisik Intoleransi aktivitas Risiko cedera Risiko gangguan integritas kulit Defisit perawatan diri Rendah diri, isolasi sosial, gangguan
citra tubuh.
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Nursing Implications and interventions: Melibatkan multidisiplin, melibatkan
terapi fisik, terapi okupasi, terapi wicara, terapi psikososial, dan ahli diet.
Memperkuat teknik belajar di semua terapi di atas.
Edukasi klien dan anggota keluarga secara menyeluruh tentang hasil yang diharapkan dan kemungkinan munculnya masalah.
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Nursing intervention..... lanjutan
Mendorong pasien utk latihan Ingatkan saat latihan berlebihan: merasa
lemah dari setelah latihan, nyeri otot yang berlebihan, kram otot parah, dan sesak.
Pastikan alat bantu cocok untuk mencegah ulkus tekanan dan meningkatkan stabilitas.
Pastikan pasien memiliki peralatan (ortosis, kursi roda.
Peka terhadap kebutuhan psikososial dan melaksanakan rujukan yang tepat.
Libatkan kelompok-kelompok pendukung.
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SummaryClinical DMD LGMD FSMD DD CMD
Incidence Common/ sering
Less/ kurang
Not common
Rare/ sangat jarang
Rare
Age of onset
3-6 y 2nd decade
2nd decade
20-77 y At/ after birth
Sex Male Either sex M = F Either sex Both
Inheritance
Sex-linked recessive
AR, rare AD
AD AD Unknown
Muscle involve.
Proximal to distal
Proximal to distal
Face & shoulder to pelvic
Distal Generalized
Muscle spread until late
Leg, hand, arm, face, larynx,eye
Upper ex, calf
Back ext, hip abd, quad
Proximal -
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SummaryClinical DMD LGMD FSMD DD CMDPseudohypertrophy
80% calf
< 33% Rare no No
Contracture Common Late Mild, late Mild, late Severe
ScoliosisKyphoscoliosis
Common, late
Late - - ?
Heart Hypertrophytachycardia
Very rare/ jarang
Very rare Very rare Not observed
Intellectual decrease Normal Normal Normal ?
Course Stead, rapid
Slow Insidious benign Steady
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Thank you