Do new blood-thinning treatments commenced after cardiac surgery keep By-Pass Grafts open longer ?

The effect of postoperative Aspirin and Clopidogrel versus Aspirin and Ticagrelor on coronary graft patency in patients undergoing primary isolated coronary artery bypass surgery (CABG) post acute coronary syndrome (ACS) presentation

Status

Terminated

Phases

Phase 4

Study type

Interventional

Source

ANZCTR

Registry ID

ACTRN12613001362785

Acronym

IMPACT

Enrollment

Registered

2013-12-12

Start date

2014-08-07

Completion date

2018-09-30

Last updated

2025-11-10

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

Conditions

None listed

Brief summary

By pass grafts fail following cardiac surgery in nearly one in five people at 12 months .New blood thinning medicines may reduce the likelihood of this happening.In this trial we will look at these agents and whether or not they keep by pass grafts open with CT scan assessment of the by passes at 12 months

Interventions

All patients who are undergoing isolated CABG following an ACS presentation at Waikato hospital Hamilton NZ and the Austin hospital Melbourne Australia will be eligible for randomisation and will be approached to consider participation After CABG patients will be randomised to receive enteric coated Aspirin 100 mg orally daily and either Ticagrelor 90 mg orally twice daily or Clopidogrel 75 mg orally daily for 12 months post CABG. Post-operatively dual anti-platelet treatment will be commenced within 12 hours of the procedure, once the cardiac surgeon assessment indicates bleeding /drainage is less that 50 ml/hour The study drug initial dose after surgery is going to be the maintenance dose, 75 mg orally daily for clopidogrel and 90 mg orally twice dailiy for ticagrelor. Compliance will be assessed by phone follow up

Study design

Allocation

Randomised controlled trial

Intervention model

Parallel

Primary purpose

Treatment

Masking

Open (masking not used)

Eligibility

Sex/Gender

All

Age

0 to No maximum

Healthy volunteers

Inclusion criteria

Patients undergoing primary isolated CABG post ACS presentation

Exclusion criteria

Previous CABG Platelet count <100x 109/l need for concomitant valve surgery or aneurysm resection Need for post op warfarin profuse post op bleeding

Outcome results