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Published on: March 21, 2013
Treatment of neurally mediated reflex syncope
Juan C Guzman1, Luciana V Armaganijan, Carlos A Morillo
1Department of Medicine, McMaster University, 237 Barton Street East, Hamilton, Ontario L8L 2X2, Canada.
Vasovagal syncope (VVS), a common cause of fainting, has limited treatment evidence. This review examines nonpharmacologic and pharmacologic therapies for recurrent VVS, highlighting conflicting results and intervention strategies.
Area of Science:
- Cardiology
- Neurology
Background:
- Vasovagal syncope (VVS) is the most frequent cause of transient loss of consciousness across all age groups.
- Current evidence from randomized clinical trials on VVS treatment is limited, with varied results from tested interventions.
Purpose of the Study:
- To review existing evidence on nonpharmacologic and pharmacologic therapies for recurrent vasovagal syncope.
- To analyze treatment modalities aimed at interrupting the reflex response responsible for VVS.
Main Methods:
- Systematic review of available scientific literature.
- Analysis of randomized clinical trials and other studies assessing VVS treatments.
Main Results:
- Conflicting results have been reported for various nonpharmacologic and pharmacologic treatment strategies.
- Evidence supporting specific interventions for recurrent VVS is not definitive.
Conclusions:
- Effective treatment options for recurrent vasovagal syncope require further investigation.
- Interventions targeting the reflex arc of VVS show potential but need more robust evidence.
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Somatic Spinal Reflexes
One of the most well-known somatic spinal reflexes is the stretch reflex, which is activated by the sudden stretching of a muscle. This reflex involves the activation of specialized sensory receptors called muscle spindles, which are located in the muscle tissue and detect changes in the length and speed of muscle contractions. When a muscle is suddenly...
