Post‑Polio Syndrome: Evidence‑Based Diagnostic and Management Guidelines

Diagnostic Criteria & Epidemiology

A history of paralytic poliomyelitis followed by a prolonged period of functional stability (typically 30–40 years) is required to diagnose post‑polio syndrome. 1
The syndrome affects approximately 25 %– 40 % of individuals who survived paralytic polio, presenting with new or worsening asymmetric muscle weakness and increased muscle pain‑related fatigue lasting ≥ 1 year. 1

Longer elapsed time since the acute poliovirus infection (≥ 30 years) increases the likelihood of developing post‑polio syndrome. 4
Female gender is associated with a higher risk of post‑polio syndrome. 2
Persistent residual motor impairment after the initial recovery phase predisposes patients to later‑onset weakness. 4

In patients at risk for respiratory complications, pulmonary function testing should be performed at least every 6 months. 5
Recommended baseline tests include spirometry with forced or slow vital capacity, maximal inspiratory and expiratory pressures (or sniff nasal inspiratory pressure), and peak cough flow measurements. 5
When resources allow, polysomnography or overnight oximetry should be added to guide decisions about non‑invasive ventilation. 5

Initiate non‑invasive ventilation (NIV) for individuals with neuromuscular disease who meet objective thresholds on FVC, inspiratory/expiratory pressures, or nocturnal oximetry/polysomnography. 5
Early identification of respiratory decline and timely introduction of NIV can delay further deterioration in pulmonary function. 5
NIV settings should be individualized—adjusting mode, inspiratory time, and pressure levels—to optimize patient‑ventilator synchrony. 5
Incorporating a backup respiratory rate into NIV may improve synchrony and gas exchange. 5
Continuous monitoring for bulbar muscle weakness is essential, as it may limit tolerance of NIV therapy. 5