Abstract
This report describes an association of postexertional syncope with increased levels of circulating catecholamines. A 36-year old male who experienced postexercise bradycardia and asystole had higher basal plasma norepinephrine (120 versus 68 ± 6 pg/ml) and epinephrine (18 versus less than 10 pg/ml) but a similar vagal tone (vagal tone index of 5.44 versus 5.81 ± 1.00 U) when compared with 6 closely matched subjects who underwent an uneventful stress test.
| Original language | English |
|---|---|
| Pages (from-to) | 121-123 |
| Number of pages | 3 |
| Journal | Cardiology |
| Volume | 83 |
| Issue number | 1-2 |
| DOIs | |
| State | Published - 1993 |
| Externally published | Yes |
Keywords
- Beta-blockers
- Epinephrine
- Plasma norepinephrine
- Postexercise syncope