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Related Experiment Videos

Neuralgic amyotrophy with phrenic nerve involvement.

H Lahrmann1, W Grisold, F J Authier

  • 1Neurologische Abteilung, Kaiser Franz Josef Hospital, Wien, Austria.

Muscle & Nerve
|April 16, 1999
PubMed
Summary
This summary is machine-generated.

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Phrenic nerve involvement, a rare complication of neuralgic amyotrophy (Parsonage-Turner syndrome), can cause sudden, severe dyspnea. This study highlights four cases, emphasizing the need for considering this diagnosis in unexplained respiratory distress.

Area of Science:

  • Neurology
  • Pulmonology
  • Electromyography

Background:

  • Neuralgic amyotrophy (Parsonage-Turner syndrome) is an idiopathic neuropathy.
  • Phrenic nerve involvement is an uncommon but significant manifestation.
  • Sudden onset dyspnea necessitates a broad differential diagnosis.

Observation:

  • Four patients presented with severe dyspnea without apparent lung disease.
  • All patients reported a history of infection or surgery and sudden shoulder pain.
  • Proximal arm weakness was present in only one patient.

Findings:

  • Diagnostic workup revealed diaphragmatic paralysis due to phrenic nerve involvement.
  • Paralysis was unilateral, bilateral, or recurrent in the reported cases.
  • Abnormalities persisted for up to 4 years in follow-up studies.

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Implications:

  • Considers neuralgic amyotrophy in cases of unexplained, sudden severe dyspnea.
  • Highlights the diagnostic utility of electrophysiologic studies for diaphragmatic dysfunction.
  • Underscores the potential for prolonged respiratory compromise in this syndrome.