coronary microvascular dysfunction
Conditions
Interventions
Index test:atomic magnetometer magnetocardiograph
Sponsors
Beijing Anzhen Hosptial, Capital Medical University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: Patients must meet all of the following criteria to be included in the study: (1) Age 18-80 years old; (2) Clinically diagnosed as stable coronary heart disease; (3) The pre-test probability is high or CCTA indicates that the central coronary artery stenosis is 40-90%; (4) Intending to be admitted to the hospital for coronary angiography; (5) Participate in this study with informed consent and provide personal information.
Exclusion criteria
Exclusion criteria: Patients will not be included in the study if they meet any of the exclusion criteria: (1) Acute myocardial infarction; (2) Old myocardial infarction; (3) Complex arrhythmias, such as frequent atrial premature beats, premature ventricular beats, atrial fibrillation, atrial flutter, etc.; (4) After PCI/CABG; (5) History of congenital heart disease; (6) Definitely diagnosed cardiomyopathy; (7) Abnormal origin or development of coronary arteries; (8) CCTA shows left main lesion (LM stenosis > 50%); (9) Patients with pacemaker surgery and drug pump implantation; (10) There are metal implants such as steel plates and nails in the trunk; (11) Patients who suffer from claustrophobia and cannot lie still for 2 minutes in a closed environment; (12) Subjects who are not suitable for inclusion by the investigators for other reasons.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Field map angle at peak ;current angle at peak ;Change of the map angle within RT interval;T peak maximum and minimum ratio; sensitivity;specificity;positive predictive value;negative predictive value;Area under the ROC curve;The change of the distance between the two poles of the TT magnetic field;T peak magnetic field amplitude; | — |
Countries
China
Contacts
Public ContactXiantao Song
Department of Cardiology, Anzhen Hospital, Capital Medical University
Outcome results
None listed