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Orthostatic intolerance and syncope associated with Chiari type I malformation
O Prilipko1, A R Dehdashti, S Zaim
1Presurgical Epilepsy Evaluation Unit, Program of Functional Neurology and Neurosurgery, University of Lausanne, Switzerland.
Journal of Neurology, Neurosurgery, and Psychiatry
|June 21, 2005
Summary
Chiari type I malformation (CM1) can cause syncope. A patient with CM1 and postural orthostatic tachycardia syndrome (POTS) experienced symptom resolution after surgery, suggesting a potential link between these conditions.
Area of Science:
- Neurology
- Cardiology
- Neurosurgery
Background:
- Chiari type I malformation (CM1) involves cerebellar tonsil herniation below the foramen magnum.
- CM1 symptoms include headaches and, rarely, syncope due to brainstem or vascular compression.
- Postural orthostatic tachycardia syndrome (POTS) is a form of orthostatic intolerance causing syncope.
Purpose of the Study:
- To report the first case of CM1 associated with recurrent syncope due to POTS.
- To evaluate the effect of surgical intervention for CM1 on POTS-related syncope.
Main Methods:
- Case report of a patient with CM1 and POTS.
- Surgical decompression for CM1.
- Post-operative symptom assessment.
Main Results:
- The patient presented with frequent syncope attributed to POTS.
- Surgical correction of CM1 led to complete resolution of syncopal episodes.
- No recurrence of syncope was observed post-surgery.
Conclusions:
- This case suggests a possible association between CM1 and POTS-induced syncope.
- Surgical treatment for CM1 may resolve syncope in patients with co-existing POTS.
- Further research is needed to determine if this association is coincidental or systematic.