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Correlation and mechanism between cardiac magnetic resonance imaging and oral streptococcus count in patients with primary microvascular angina pectoris

Correlation and mechanism between cardiac magnetic resonance imaging and oral streptococcus count in patients with primary microvascular angina pectoris

Status
Active, not recruiting
Phases
Early Phase 1
Study type
Interventional
Source
ChiCTR
Registry ID
ChiCTR2000030732
Enrollment
Unknown
Registered
2020-03-12
Start date
2020-05-04
Completion date
Unknown
Last updated
2020-03-16

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Primary microvascular angina

Interventions

Conventional treatment group:Conventional drug therapy
Combined anti-infection treatment group:Conventional drug therapy combined anti-infection treatment in oral gum under

Sponsors

Hangzhou Red Cross Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 75 Years

Inclusion criteria

Inclusion criteria: Aged 18 to 75 years,patients who meet the diagnostic criteria of PMVA: (1) Typical labor-type angina for at least half a year,the duration of chest pain was greater than 10 mins, and nitroglycerin had poor therapeutic effect. (2) Electrocardiogram conventional 12-lead trace or dynamic ECG monitoring showed at least one ST-segment ischemic down-shift >=0.01 mm. (3) Exercise flat test positive (ST-segment ischemic down-shift >= 0.01mm) or dynamic ECG monitoring showed at least one ST-segment ischemic down-shift >=0.01 mm. (4) The left ventricular function of the echocardiogram was normal, and the left ventricular ejection fraction (LVEF) was >55%. (5) Coronary angiography showed normal or near normal (contrast findings suggest normal or irregular epicardial coronary vessel wall, mild stenosis of lumen discontinuity, stenosis < 20%), no spontaneous coronary artery spasm Performance, TIMI blood flow 1-2 patients. (6) CMR confirmed the presence of coronary microcirculation.

Exclusion criteria

Exclusion criteria: (1) Organic heart disease including coronary heart disease, coronary artery spasm, coronary artery bridge, primary cardiomyopathy, congenital heart disease, valvular heart disease, hypertrophic cardiomyopathy, pulmonary heart disease, hypertensive heart disease; (2) Myocardial injury: including myocarditis, systemic and myocardial damage; (3) Hypertension, hyperlipidemia, diabetes patients; (4) Arrhythmia requiring drug control; (5) Complete left bundle branch block, II and III degree atrioventricular block, sick sinus syndrome; (6) Severe congestive heart failure; (7) Malignant tumors; (8) Other diseases such as lung, esophagus, and aortic dissection that can cause chest pain; (9) Severe liver and kidney dysfunction; (10) Patients with acute or chronic inflammatory diseases and severe trauma; (11) Endocrine system diseases; (12) Anemia; (13) Peripheral vascular disease; (14) Pregnancy and lactation women; (15) Magnetic resonance examination for contraindicated patients; (16) Patients with penicillin allergy; (17) Those who cannot adhere to the drugs.

Design outcomes

Primary

MeasureTime frame
cardiovascular magnetic resonance;Count of streptococcus sanguis in subgingival plaque;platelet alpha-granule membrane glycoprotein 140;fibrinopeptide A;von Willebrand factor;homocysteine;

Countries

China

Contacts

Public ContactQi Huang

Hangzhou Red Cross Hospital

huangqi1021@hotmail.com+86 13588740500

Outcome results

None listed

Source: ChiCTR (via WHO ICTRP) · Data processed: Feb 4, 2026