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Reading File
Running Command

python3 -c " import pdfplumber pdf_path = '/tmp/workspace/attachments/a07d8a7e-3890-4a3c-b114-89744090e2e9/POLIOMYELITIS (m.s).pdf' text = '' with pdfplumber.open(pdf_path) as pdf: print(f'Total pages: {len(pdf.pages)}') for i, page in enumerate(pdf.pages): t = page.extract_text() if t: text += f'\n--- PAGE {i+1} ---\n' + t print(text[:8000]) "

analyse_media
Running Command

python3 -c " import pdfplumber from pypdf import PdfReader pdf_path = '/tmp/workspace/attachments/a07d8a7e-3890-4a3c-b114-89744090e2e9/POLIOMYELITIS (m.s).pdf' # Try pypdf reader = PdfReader(pdf_path) print('pypdf pages:', len(reader.pages)) for i, page in enumerate(reader.pages[:3]): t = page.extract_text() print(f'Page {i+1} text length: {len(t) if t else 0}') if t: print(t[:500]) "

Running Command

python3 -c " from pypdf import PdfReader, PdfWriter import os pdf_path = '/tmp/workspace/attachments/a07d8a7e-3890-4a3c-b114-89744090e2e9/POLIOMYELITIS (m.s).pdf' out_dir = '/tmp/workspace/polio_pages/' os.makedirs(out_dir, exist_ok=True) reader = PdfReader(pdf_path) print('Total pages:', len(reader.pages)) # Save individual pages as single-page PDFs for i, page in enumerate(reader.pages): writer = PdfWriter() writer.add_page(page) out_path = f'{out_dir}page_{i+1}.pdf' with open(out_path, 'wb') as f: writer.write(f) print('Done splitting pages') "

Running Command

python3 -c " from PIL import Image import fitz # PyMuPDF import os pdf_path = '/tmp/workspace/attachments/a07d8a7e-3890-4a3c-b114-89744090e2e9/POLIOMYELITIS (m.s).pdf' out_dir = '/tmp/workspace/polio_images/' os.makedirs(out_dir, exist_ok=True) doc = fitz.open(pdf_path) print('Pages:', len(doc)) for i, page in enumerate(doc): pix = page.get_pixmap(dpi=150) img_path = f'{out_dir}page_{i+1}.png' pix.save(img_path) print(f'Saved page {i+1}: {os.path.getsize(img_path)} bytes') print('Done') "

Running Command

pip install --user pymupdf -q && python3 -c " import fitz, os pdf_path = '/tmp/workspace/attachments/a07d8a7e-3890-4a3c-b114-89744090e2e9/POLIOMYELITIS (m.s).pdf' out_dir = '/tmp/workspace/polio_images/' os.makedirs(out_dir, exist_ok=True) doc = fitz.open(pdf_path) print('Pages:', len(doc)) for i, page in enumerate(doc): pix = page.get_pixmap(dpi=150) img_path = f'{out_dir}page_{i+1}.png' pix.save(img_path) print('Done') "

Running Command

python3 -c " import base64, os # Check file sizes out_dir = '/tmp/workspace/polio_images/' for f in sorted(os.listdir(out_dir)): size = os.path.getsize(out_dir+f) print(f'{f}: {size} bytes') "

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Running Command

python3 -c " from PIL import Image import os in_dir = '/tmp/workspace/polio_images/' out_dir = '/tmp/workspace/polio_small/' os.makedirs(out_dir, exist_ok=True) for f in sorted(os.listdir(in_dir)): if f.endswith('.png'): img = Image.open(in_dir + f) # Resize to width 900, keep aspect w, h = img.size new_w = 900 new_h = int(h * new_w / w) img = img.resize((new_w, new_h), Image.LANCZOS) out_path = out_dir + f.replace('.png', '.jpg') img.save(out_path, 'JPEG', quality=60) print(f'{f} -> {os.path.getsize(out_path)} bytes') "

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I've now read all 12 pages. Here is a clear, simple summary of the entire document:

📋 Summary: Poliomyelitis and Post-Polio Syndrome (Chapter 31)

Authors: Srishti Sharma, Megha Sheth | From Section 4: Physiotherapy Management

🦠 PART 1 - POLIOMYELITIS

What is it?

Polio (Poliomyelitis) is a viral infection caused by the Poliovirus (a human enterovirus). The name literally means "inflammation of the gray matter of the spinal cord." It destroys the anterior horn cells of the spinal cord, causing muscle weakness and paralysis. About 95% of infections are silent (no symptoms). Only 2-3% of infected people develop actual paralysis.

How does it spread?

  • Fecal-oral route - through contaminated food/water
  • Incubation period: 2 to 35 days
  • The virus travels from the gut to the bloodstream, then attacks the spinal cord

Types of Polio

TypeDescription
ParalyticMost severe - attacks motor neurons, causes flaccid paralysis, muscle wasting
Non-paralyticMuscle weakness occurs early and later recovers
SubclinicalNo symptoms at all
AbortiveOnly mild respiratory/GI symptoms, no paralysis

Pathogenesis (What happens in the body)

The virus kills nerve cells in the spinal cord. Dead cells are replaced by scar tissue. This causes:
  • Flaccid paralysis (floppy, not stiff)
  • Muscle atrophy (wasting)
  • Loss of tendon reflexes
  • In severe cases: respiratory failure and death (bulbar polio)

4 Stages of Polio

  1. Preclinical / Prodromal Stage - Virus invades; fever, sore throat, malaise (lasts only 24-48 hrs; often missed)
  2. Acute Illness Stage - True paralytic stage; sudden onset of asymmetric muscle weakness; strict bed rest required
  3. Stage of Recovery (Convalescent Stage) - Virus is dead; partial recovery of paralysis; lasts 6 weeks to 2 years
  4. Stable Disability (Chronic Stage) - Permanent paralysis; fixed deformities; scar tissue replaces dead nerve cells; limbs may shorten in children

Diagnosis

  • Clinical: History + physical examination
  • Laboratory: PCR (gold standard) on stool, throat swabs, blood, or CSF. Stool is the best sample (virus shed for 1-2 months). Two samples 24 hours apart are recommended.

Management

Immunization (Prevention):
  • IPV (Injectable Polio Vaccine) - 2 doses = 90% protection; 3 doses = 99% protection
  • OPV (Oral Polio Vaccine) - Only 95% protection; used in many parts of the world via drops
  • Children receive 4 doses at 2 months, 4 months, 6-18 months, and 4-6 years
Physiotherapy by Stage:
StageKey Physio Interventions
AcuteComplete rest, correct positioning, splints, gentle passive movements (2-3x/day)
RecoveryFunctional splints, careful positioning (avoid ITB contracture), contract management (stretching TA and ITB), strengthening via manual/electrical stimulation, hydrotherapy
Stable DisabilitySplinting to prevent deformity progression, stretching, strengthening, preserving function

♻️ PART 2 - POST-POLIO SYNDROME (PPS)

What is it?

PPS is a condition where polio survivors experience NEW weakness, fatigue, and pain years (often 15+ years) after they had initially recovered from polio. Prevalence: 20-85% of polio survivors. An Indian study estimated it at 86.53% in Gujarat.

Why does it happen?

The main theory is the Neuron Fatigue Theory:
  • After the original polio infection, surviving neurons "overwork" to reinnervate orphaned muscle fibers (compensate for lost neurons)
  • Over decades, these overworked neurons wear out and fail
  • The result: new denervation, new weakness, and new atrophy

Clinical Features (Common Symptoms)

  • New fatigue and muscle weakness
  • Pain in muscles and joints
  • Muscle atrophy
  • Cold intolerance
  • Sleep disorders
  • Dysphagia (difficulty swallowing)
  • Respiratory insufficiency

Diagnosis (3 Steps)

  1. Evaluate symptoms (fatigue, new weakness, pain, breathing issues)
  2. Rule out other diseases (fibromyalgia, ALS, chronic fatigue syndrome, etc.)
  3. Meet diagnostic criteria - Halstead (1985/1991), Dalakas (1996), or March of Dimes (2001) criteria. Key requirement: confirmed polio history + stable period of 15+ years + new onset symptoms.
EMG/NCV findings: Fibrillation potentials and large amplitude motor unit potentials indicate ongoing denervation/reinnervation.
PPS is included in ICD-10 under code G-14 (since 2017).

Management

Medical (drugs for symptom relief):
DrugPurpose
NSAIDsMuscle/joint pain
Muscle relaxantsStiffness/pain
PrednisoneInflammation
PyridostigmineSkeletal muscle weakness
ImmunoglobulinFatigue, pain
Co-enzyme Q10Fatigue, pain
Avoid: Benzodiazepines, beta-blockers, phenytoin (aggravate PPS symptoms)
Physiotherapy (Rehabilitative Management) - 3 Core Pillars:
  1. Energy Conservation
    • Pace activities; take regular rest breaks
    • Reduce activity levels; maintain healthy weight
    • Use assistive devices
  2. Pain Relief
    • Heat therapy
    • TENS (transcutaneous electrical nerve stimulation)
    • Acupuncture
    • Gentle stretching
  3. Exercise
    • Resistance training: Use weights/therabands for weak muscles; avoid overfatiguing
    • Aerobic training: Low-level cycling (arm/leg ergometer), 15-20 min, 3x/week max; exercises should be nonfatiguing (RPE 11 on Borg scale or 50-75% of 3RM)
    • Hydrotherapy: Warm water exercise - reduces pain, improves strength, minimizes gravity stress
    • Breathing exercises: Diaphragmatic breathing; chest physio to improve lung expansion
    • Orthoses/Assistive devices: Splints, wheelchairs, crutches to improve mobility and reduce pain
Key Precautions:
  • Never overuse muscles - "nonfatiguing" exercise is the rule
  • If pain or tiredness lasts 24+ hours after exercise, reduce load
  • Train no more than twice a week
  • Avoid walking (gait abnormalities cause trauma); Nordic pole walking is safer

🗂️ Quick Summary (One Paragraph)

Polio is a viral disease that attacks spinal cord nerve cells, causing paralysis mainly in the legs. It spreads through contaminated food/water and is preventable by vaccination (IPV/OPV). Recovery is partial; permanent disability can result. Physiotherapy is the cornerstone of management at every stage - from bed rest and splinting during acute polio, to strengthening and hydrotherapy during recovery. Post-polio syndrome (PPS) affects many survivors decades later, causing new weakness and fatigue as overworked neurons give out. Management of PPS focuses on energy conservation, gentle exercise, pain relief, and use of assistive devices - all without overloading already stressed muscles.
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