Comparing Point of Care Clotting Tests in the OR Versus Standard Laboratory Clotting Tests

The purpose of this study is determine the agreement of point of care (POC) clotting tests (INR and aPTT) by the POC device by Hemochron Jr versus standard laboratory clotting tests (INR and aPTT) in patients undergoing elective cardiac surgery.

Completed

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Key information

Conditions

Coronary Artery Bypass Grafting Cardiovascular Diseases Embolism and Thrombosis Thrombosis Vascular Diseases

Age range

18 year–65 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Hamilton General Hospital

Hamilton, Ontario, L8L 2X2, Canada

About this study

The study is a correlation between POC Hemochron Jr INR and aPTT with the standard.

Who can participate

Healthy volunteers accepted: No

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

did not receive anticoagulants or clopidogrel within 5 days preoperatively

Exclusion criteria

history of coagulopathy
heparin resistance
receiving heparin or warfarin
hepatic or renal dysfunction
pregnancy
urgent or emergency cases

Treatment and study plan

Primary outcomes

Correlation between pre cardiopulmonary bypass (CPB) and post CPB POC INR and PTT with standard laboratory INR and PTT

Time frame: 2 months

Sponsors and collaborators

Lead sponsor

McMaster University

Other

Collaborators

St. Joseph's Healthcare Hamilton

Registry information

Official study title

Comparison Between Point of Care INR and aPTT Hemochron Jr Whole Blood Measurement With Standard Laboratory in Patients Having Elective First Time on Pump Coronary Artery Bypass Grafting (CABG)

Important dates

Study start: 2008
Primary completion: 2011
Study completion: 2011
First posted: May 5, 2009
Registry last updated: Jun 10, 2026

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

View the official ClinicalTrials.gov record (opens in a new tab)

This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

Published trials that share one or more normalized conditions with this study.

Completed