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[Acute respiratory failure caused by myotonic dystrophy]
I A Hynås1, T Ganes, A Naalsund
1Rikshospitalet 0027 Oslo. inger.anette.hynas@rikshospitalet.no
Summary
Acute respiratory insufficiency in a young patient was caused by myotonic dystrophy, a neuromuscular disease. This highlights the importance of neurophysiological testing for unexplained respiratory failure.
Area of Science:
- Neurology
- Pulmonology
- Medical Diagnostics
Background:
- Respiratory insufficiency can stem from non-pulmonary causes.
- Gynaecological surgery is an unusual context for respiratory complications.
Observation:
- A 29-year-old patient developed acute respiratory insufficiency post-gynaecological operation.
- Initial investigations ruled out pulmonary embolism and revealed restrictive ventilatory capacity.
Findings:
- Electromyography demonstrated severe myotonic discharges in respiratory muscles, including the diaphragm.
- Phrenic nerve conduction studies were normal, differentiating from nerve entrapment.
Implications:
- Myotonic dystrophy should be considered in cases of unexplained respiratory failure.
- Comprehensive neurophysiological evaluation is crucial for diagnosing neuromuscular causes of respiratory insufficiency.