syncope
Conditions
Interventions
Sponsors
Eligibility
Inclusion criteria
Inclusion criteria: 1.Patients suspected of syncope. 2.Patients aged 18-80 who can cooperate with the upright tilt table test and dynamic TCD cerebral blood flow monitoring. 2.able to give informed consent.
Exclusion criteria
Exclusion criteria: 1.The patient's condition is unstable, 2.Severe intracranial and extracranial vascular stenosis, severe stenosis of coronary artery, aortic valve and mitral valve, and severe hypertrophic obstructive cardiomyopathy, 3.Severe anemia 4.severe arrhythmia 5.moderate and severe hypertension 6.pregnancy
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| average cerebral blood flow velocity;Lying and standing blood pressure;heart rate while lying and standing ;sensitivity;specificity;ROC curve; | — |
Countries
China
Contacts
Shenzhen Second People's Hospital