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Platelet Inhibition and Bleeding in Patients Undergoing Emergent Cardiac Surgery

Does Platelet Inhibition Predict Surgery Related Bleeding in Patients Undergoing Emergent Cardiac Surgery During Dual Antiplatelet Therapy - a Pilot Study

Status
Completed
Phases
Unknown
Study type
Observational
Source
ClinicalTrials.gov
Registry ID
NCT01468597
Enrollment
167
Registered
2011-11-09
Start date
2011-01-31
Completion date
2014-08-31
Last updated
2020-06-18

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

Conditions

Bleeding

Keywords

Emergent, Cardiac surgery, On-pump, Platelet function

Brief summary

The aim of the study is to evaluate if there is an association between platelet inhibition and surgery-related bleeding in patients undergoing emergent cardiac surgery during dual antiplatelet therapy.

Detailed description

Blood for measuring platelet function is drawn before induction of anesthesia

Interventions

None listed

Sponsors

Medical University of Graz
Lead SponsorOTHER

Study design

Observational model
COHORT
Time perspective
PROSPECTIVE

Eligibility

Sex/Gender
ALL
Age
30 Years to 80 Years
Healthy volunteers
No

Inclusion criteria

* First time on-pump CABG with or without valve replacement

Exclusion criteria

* Redo surgery, * Renal insufficiency needing dialysis, * Concomitant medication with warfarin, * Preoperative fibrinogen \< 150 mg%

Design outcomes

Primary

MeasureTime frame
Calculated Blood Lossuntil postoperative day 5

Secondary

MeasureTime frameDescription
BARC Bleedinguntil postoperative day 2Intracranial bleed within 48 hours, Reoperation after closure of sternotomy for the purpose of controlling bleeding, Transfusion of equal to or more than 5 Units of packed red blood cells within a 48-hour period, Chest tube output of equal to or more than 2 L within a 24-h period.

Countries

Austria

Participant flow

Pre-assignment details

184 patients were screened for eligibility. Of these, 17 patients were found to be ineligible for the study. Therefore the number of actually enrolled patients is 167.

Participants by arm

ArmCount
One Group
Emergency surgery
149
Total149

Withdrawals & dropouts

PeriodReasonFG000
Overall Studyconcomitant valves12
Overall StudyFound ineligible17
Overall Studyno platelet function data5
Overall Studyoff-pump CABG1

Baseline characteristics

CharacteristicOne Group
Age, Continuous68.2 years
STANDARD_DEVIATION 9.4
Race (NIH/OMB)
American Indian or Alaska Native
0 Participants
Race (NIH/OMB)
Asian
0 Participants
Race (NIH/OMB)
Black or African American
0 Participants
Race (NIH/OMB)
More than one race
0 Participants
Race (NIH/OMB)
Native Hawaiian or Other Pacific Islander
0 Participants
Race (NIH/OMB)
Unknown or Not Reported
0 Participants
Race (NIH/OMB)
White
149 Participants
Region of Enrollment
Austria
149 participants
Sex: Female, Male
Female
35 Participants
Sex: Female, Male
Male
114 Participants

Adverse events

Event typeEG000
affected / at risk
deaths
Total, all-cause mortality
13 / 149
other
Total, other adverse events
0 / 149
serious
Total, serious adverse events
13 / 149

Outcome results

Primary

Calculated Blood Loss

Time frame: until postoperative day 5

ArmMeasureValue (MEDIAN)
One GroupCalculated Blood Loss1996 milliters
Secondary

BARC Bleeding

Intracranial bleed within 48 hours, Reoperation after closure of sternotomy for the purpose of controlling bleeding, Transfusion of equal to or more than 5 Units of packed red blood cells within a 48-hour period, Chest tube output of equal to or more than 2 L within a 24-h period.

Time frame: until postoperative day 2

ArmMeasureValue (NUMBER)
One GroupBARC Bleeding72 participants

Source: ClinicalTrials.gov · Data processed: Mar 12, 2026