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Stent Patients' surgery risk: blood test may predict heart trouble

NCT ID NCT00901030

Knowledge-focused Sponsor: McMaster University Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed This study
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 27, 2026 · Last updated Jun 27, 2026

Summary

This study looked at 250 adults with heart stents who were taking blood thinners and needed non-cardiac surgery. Researchers used special blood tests to measure how well the blood was thinned and tracked whether patients had serious heart problems after surgery. The goal was to see if these tests could help predict complications, but the study did not test any new treatment.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

250 people

The number who actually took part.

Start date

Mar 2009

Finished

Sep 2015

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

Patients who have PCI have to stay on antiplatelet agents to prevent clotting of their stents. These patients often require NCS at some stage after their PCI.

Ages

30 to 85 years

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: * patients between ages 30-85 years old, receiving post-PCI aspirin and/or clopidogrel therapy * patients undergoing non-ambulatory, NCS * patients will have received a bare metal coronary stent within the last 12 months or a drug eluting stent at any time prior to their NCS * the type of surgery has to be such that there are no contra-indictions to remain on an anti-platelet agent * surgeon must agree to keep the patient on at least one anti-platelet agent during the perioperative period Exclusion Criteria: * clotting abnormalities * drugs affecting platelet function other than aspirin or clopidogrel * moderate renal impairment * liver dysfunction with co-existing thrombocytopenia

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As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Surgery

Contacts and locations

Locations

  • Hamilton Health Sciences

    Hamilton, Ontario, L8L 2X2, Canada

  • London Health Sciences Centre

    London, Ontario, N6A 5A5, Canada

  • University Health Network

    Toronto, Ontario, M5G 2C4, Canada

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