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[Polyneuropathy in critically ill patients: a seldom recognized cause of dependence on mechanical ventilators]
M Miranda1, H A Arroyo, D Ledesma
1Servicio de Neurología, Hospital Nacional de Pediatría Profesor Dr Juan P. Garrahan, Buenos Aires, Argentina. miranda@intramed.net.ar
Insights
Pediatric critical illness can lead to polyneuropathy, a nerve disorder affecting limbs and breathing muscles in children requiring mechanical ventilation. Early diagnosis through electrophysiological tests is crucial for better management.
Area of Science:
- Pediatric critical care medicine
- Neurology
- Clinical neurophysiology
Background:
- Neuromuscular complications are significant causes of morbidity in critically ill children.
- Prolonged mechanical ventilation is often required in these patients.
- Critical illness polyneuropathy (CIP) affects children dependent on mechanical respiratory assistance.
Observation:
- This study evaluated four pediatric patients requiring mechanical ventilation.
- Three patients had lung disorders, and one had acute encephalopathy.
- All patients developed prolonged dependence on mechanical ventilators.
Findings:
- Electromyography revealed primary axonal nerve damage with secondary demyelination in all four limbs.
- Phrenic nerve involvement was identified, impacting respiratory function.
- These findings are consistent with critical illness polyneuropathy in pediatric patients.
Implications:
- Clinical suspicion combined with electrophysiological testing aids in diagnosing critical illness polyneuropathy in severely ill children.
- Improved recognition and etiological investigation are essential for developing preventive and therapeutic strategies.
- Early identification can potentially reduce morbidity and ventilator dependence in pediatric intensive care units.
Introduction:
Neuromuscular complications, in a critical care unit, are a cause of morbidity in children and prolonged dependence on a mechanical ventilator. Polyneuropathy of the critical patient is such a complication and is seen in patients on mechanical respiratory assistance.
Objective:
To discuss the neurological and electrophysiological clinical findings of polyneuropathy of the critical patient.
Clinical Case:
We evaluated four patients who initially required mechanical respiratory assistance, three for lung disorders and one for acute encephalopathy, who developed prolonged dependence on mechanical ventilators in the year 1999. In all these patients electromyography showed primary axon nerve disorders with secondary demyelination of all four limbs and phrenic nerve involvement.
Conclusions:
Clinical suspicion and use of suitable electrophysiological techniques permits identification of this condition in the severely ill paediatric patient. Better recognition of the condition and investigation of the etiological factors would help to develop suitable measures for prevention and treatment.