Coherence analysis between mean blood flow velocity and the other monitored variables
| Low frequency | High frequency | |||||
|---|---|---|---|---|---|---|
| Variables | Subjects | Supine | Standing | Supine | Standing | |
| MFV v RR | Control | 11/13 | 13/13 | 9/13 | 11/13 | |
| VVS | 7/10 | 8/10 | 8/10 | 9/10 | ||
| Diabetic | 4/12† | 6/12† | 4/122-150 | 7/12 | ||
| MFV vSAP | Control | 8/13 | 9/13 | 13/13 | 13/13 | |
| VVS | 8/10 | 8/10 | 9/10 | 10/10 | ||
| Diabetic | 4/122-150 | 9/12 | 5/122-150 | 9/12 | ||
| MFV vDAP | Control | 9/13 | 10/13 | 10/13 | 10/13 | |
| VVS | 10/10 | 10/10 | 9/10 | 9/10 | ||
| Diabetic | 5/12† | 7/12† | 6/12 | 6/12 | ||
Values are number of coherence values > 0.5/number of subjects.
↵2-150 p < 0.05, †p < 0.01 v both control and VVS group.
DAP, diastolic arterial blood pressure; MFV, mean cerebral blood flow velocity; RR, RR interval; SAP, systolic arterial blood pressure; VVS, vasovagal syncope.