PedAM
Pediatric Disease Annotations & Medicines
| Disease | syncope |
| Symptom | C0042420|vagal reaction |
| Sentences | 1 |
| PubMedID- 20605537 | On the other hand, hemodynamic changes before symptom onset seem to indicate as in younger subjects syncope results from an excessive sympathovagal reaction, whereas in older subjects it is related to an overwhelming, progressive central vagal activity that is associated with a defective peripheral sympathetic activation. |
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