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Different agonists induced platelet aggregation before and after taking ticagrelor or clopidogrel in acute coronary syndrome patients: a prospective observational study

Different agonists induced platelet aggregation before and after taking ticagrelor or clopidogrel in acute coronary syndrome patients: a prospective observational study

Status
Recruiting
Phases
Phase 1
Study type
Observational
Source
ChiCTR
Registry ID
ChiCTR-OPN-14005422
Enrollment
Unknown
Registered
2014-10-30
Start date
2014-12-01
Completion date
Unknown
Last updated
2017-04-18

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

Conditions

acute coronary syndrome (ACS)

Interventions

ticagrelor group:ticagrelor

Sponsors

Fuwai Hospital
Lead Sponsor

Eligibility

Sex/Gender
All
Age
18 Years to 100 Years

Inclusion criteria

Inclusion criteria: (1) Patients presenting to the Emergency and Intensive Care Center of Fuwai Hospital with definite diagnosis of ACS including ST-segment elevation myocardial infarction (STEMI), non-ST-elevation myocardial infarction (NSTEMI) and unstable angina (UA); (2) Newly happened, aggravated, and typical ischemic chest pain within 48 hours including duration of symptoms last more than five minutes or need of taking nitroglycerin sublindual to alleviate the pain; (3) Having not taken clopidogrel or ticagrelor for antiplatelet therapy before admission or withdrawing these drugs for at least one month; (4) Taking small dosage aspirin 75-100 mg/day for one month before admission; (5) Agree to sign the informed consent.

Exclusion criteria

Exclusion criteria: (1) Contraindication to clopidogrel or ticagrelor; (2) With active pathological bleeding (such as pepticulcer or intracranial hemorrhage); (3) With a history of intracranial hemorrhage; (4) Having received thrombolysis treatment for this cardiac attack; (5) With severe liver disease or serum total bilirubin more than 1.5 times the upper normal limit; (6) With definite kidney disease or the endogenous creatinine clearance rate (Ccr) less than 30 ml/min; (7) A platelet count less than 100000 mm3, a hematocrit less than 25% or more than 50%; (8) Using of potent CYP3A4 inhibitors, such as: ketoconazole, clindamycin, nefazodone, ritonavir and atazanavir); (9) To be aged younger than 18 years, or not signed informed consent; (10) Other conditions the clinical doctors think not suitable for use of the drugs.

Design outcomes

Primary

MeasureTime frame
platelet aggregation;

Countries

China

Contacts

Public ContactYan Liang
fwliangyan@sina.cn+86 010 88398987

Outcome results

None listed

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