ClinicalTrials.gg
CompletedNCT07823400MIECC-CABGUpdated Oct 20, 2026

MIECC vs Conventional Cardiopulmonary Bypass and Systemic Inflammation in CABG

An observational study in Coronary Artery Disease and Systemic Inflammation, sponsored by Bursa Yuksek Ihtisas Training and Research Hospital. Completed at 1 site in Turkey (Türkiye). Open to participants aged 30 Years to 70 Years. Per ClinicalTrials.gov, last updated 2026-10-20.

Sponsored by Bursa Yuksek Ihtisas Training and Research Hospital · Observational

Updated Oct 20, 2026Now CompletedNow Active, not recruiting+3 moreGo to Updates ↓

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Study type
Observational
Model
Cohort
Time perspective
Prospective
Enrollment
90
Ages
30 Years to 70 Years
Sex
All
01

Where this study stands

Counted across the records on this site · 2026-11-14

Among 137 studies in Coronary Artery Disease with a site in Turkey — 33 open to participants now, 42 under way, 4 of them phase 3. Coronary Artery Disease · Turkey.

Enrollment
49th of 66
90 · median 167
Started
2026
with 24 others
Observational
66 of 137
15 open now
Registered
130th of 137
by date
Lead sponsor
4 of 137
Bursa Yuksek Ihtisas Training and Research Hospital

Among the 137 studies in Coronary Artery Disease with a site in Turkey, this one is the 49th largest by enrollment of the 66 observational ones that give a count, is one of 25 that started in 2026, is one of 66 observational ones, and was the 130th registered.

Coronary Artery Disease

4,862 studies on the registry are indexed under Coronary Artery Disease; 893 are open to participants now.

Browse Coronary Artery Disease studies →

Open to participants now

33 of the 137 studies in Coronary Artery Disease with a site in Turkey are open now. Recruiting first, the newest first:

28 more — sign in →

All 33 open studies →

A study can be open while its sites in Turkey have not opened yet or have stopped. Only those recruiting at a site in Turkey →

Who these studies take

Of the 589 Coronary Artery Disease studies recruiting now, 403 (68%) set no upper age limit and 68 (12%) stop at 75 or younger; 38 take children under 18; 48 take healthy volunteers.

This study: 30 Years to 70 Years · all sexes · no healthy volunteers.

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02

Study summary

This prospective observational study evaluates the effects of minimally invasive extracorporeal circulation (MIECC) and conventional cardiopulmonary bypass on systemic inflammatory response in patients undergoing coronary artery bypass graft surgery. Adult patients undergoing elective coronary artery bypass surgery will be observed according to the extracorporeal circulation technique used during surgery. Systemic inflammation will be assessed using routinely available hematologic inflammatory indices, including the neutrophil-to-lymphocyte ratio (NLR), platelet-to-lymphocyte ratio (PLR), and systemic immune-inflammation index (SII). These parameters will be evaluated preoperatively, at postoperative 6 hours, at postoperative 24 hours, and at hospital discharge. The study will also evaluate selected perioperative and postoperative clinical outcomes in order to compare the inflammatory response associated with MIECC and conventional extracorporeal circulation.

Read the detailed description

Coronary artery bypass graft surgery performed with cardiopulmonary bypass is associated with activation of systemic inflammatory pathways. Contact of blood with the extracorporeal circuit, surgical trauma, ischemia-reperfusion injury, and perioperative factors may contribute to this response. Minimally invasive extracorporeal circulation systems are designed to reduce blood-air contact, circuit surface area, and hemodilution and may therefore attenuate the inflammatory response compared with conventional cardiopulmonary bypass.

In this prospective observational study, patients undergoing elective coronary artery bypass graft surgery will be evaluated according to whether minimally invasive extracorporeal circulation or conventional extracorporeal circulation is used during surgery. No treatment assignment will be made by the study protocol.

Inflammatory response will be assessed using neutrophil-to-lymphocyte ratio, platelet-to-lymphocyte ratio, and systemic immune-inflammation index calculated from routinely obtained laboratory measurements. Measurements will be evaluated preoperatively, at 6 hours after surgery, at 24 hours after surgery, and at hospital discharge. Perioperative variables and postoperative clinical outcomes will also be recorded for comparison between the two groups.

03

Conditions studied

  • Coronary Artery Disease
  • Systemic Inflammation

Keywords

  • Minimally Invasive Extracorporeal Circulation
  • MIECC
  • Cardiopulmonary Bypass
  • Systemic Inflammation
  • Neutrophil-to-Lymphocyte Ratio
  • Platelet-to-Lymphocyte Ratio
  • Systemic Immune-Inflammation Index
  • Coronary Artery Bypass Grafting
04

Who can participate

Ages eligible
30 Years to 70 Years
Sexes eligible
All
Accepts healthy volunteers
No
Sampling method
Non-probability sample

Study population

Adult patients aged 30-70 years undergoing elective coronary artery bypass graft surgery with either minimally invasive extracorporeal circulation or conventional cardiopulmonary bypass at Bursa Yuksek Ihtisas Training and Research Hospital.

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Age 30-70 years
  • Patients undergoing elective coronary artery bypass graft surgery
  • Patients in whom cardiopulmonary bypass is planned
  • Written obtained

Exclusion criteria

Exclusion Criteria:

  • Emergency surgery
  • Redo cardiac surgery
  • Concomitant valve surgery
  • Previous open heart surgery
  • Preoperative renal and/or hepatic failure
  • Active infection or inflammatory disease-
Terms in these criteria, in plain language(2)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

Cancer (malignancy)

Malignancy means cancer. Criteria about another or earlier malignancy ask whether you have had a different cancer, usually within a set number of years.

Some are commonly allowed, such as treated skin cancers other than melanoma and early cancers removed completely — check the exceptions this study lists.

05

Study design

Observational model
Cohort
Time perspective
Prospective
Enrollment
90 participants (actual)
Patient registry
No

Groups and cohorts

  • MIECC Group

    Patients undergoing coronary artery bypass graft surgery using minimally invasive extracorporeal circulation (MIECC) as part of routine clinical care.

    Procedure: Minimally Invasive Extracorporeal Circulation

  • Conventional Cardiopulmonary Bypass Group

    Patients undergoing coronary artery bypass graft surgery using conventional cardiopulmonary bypass as part of routine clinical care.

    Procedure: Conventional Cardiopulmonary Bypass

Interventions

  • ProcedureMinimally Invasive Extracorporeal Circulation

    Use of a minimally invasive extracorporeal circulation system during coronary artery bypass graft surgery as part of routine clinical care.

  • ProcedureConventional Cardiopulmonary Bypass

    Use of conventional cardiopulmonary bypass during coronary artery bypass graft surgery as part of routine clinical care.

06

What researchers measure

Primary outcomes

  1. Neutrophil-to-Lymphocyte Ratio (NLR)

    NLR will be calculated from routine complete blood count values by dividing the absolute neutrophil count by the absolute lymphocyte count. Values will be compared between the MIECC and conventional cardiopulmonary bypass groups.

    Time frame: Preoperative baseline, 6 hours after surgery, 24 hours after surgery, and on the morning of hospital discharge, an average of 6 days after surgery.

  2. Platelet-to-Lymphocyte Ratio (PLR)

    PLR will be calculated from routine complete blood count values by dividing the platelet count by the absolute lymphocyte count. Values will be compared between the MIECC and conventional cardiopulmonary bypass groups.

    Time frame: Preoperative baseline, 6 hours after surgery, 24 hours after surgery, and on the morning of hospital discharge, an average of 6 days after surgery.

  3. Systemic Immune-Inflammation Index (SII)

    SII will be calculated as neutrophil count × platelet count / lymphocyte count using routine complete blood count values. Values will be compared between the MIECC and conventional cardiopulmonary bypass groups.

    Time frame: Preoperative baseline, 6 hours after surgery, 24 hours after surgery, and on the morning of hospital discharge, an average of 6 days after surgery.

07

Study locations

1 site
  • Bursa Yuksek Ihtisas Training and Research Hospital
    Bursa, Bursa 16000, Turkey (Türkiye)
08

References and documents

Individual participant data

Plan to share: No — Individual participant data will not be shared because data sharing was not included in the approved study protocol or informed consent process.

No publications or documents are linked to this record.

09

Timeline

2 registry updates since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedDate before it movedWhere the date was before it movedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Ran from Feb 2026 to primary completion in Sep 2026, 7 months.

Of 636 non-industry observational studies under Coronary Artery Disease, half reached primary completion within 48 months of starting (the median), counting those still running; a quarter within 23 and three quarters within 122. This study's 7 months is below that.

Counting every sponsor, half of 761 studies reached it within 41 months; a quarter within 21 and three quarters within 87.

Primary completion moved twice since we started tracking on Sep 25, 2026: Dec 2026 → Sep 2026, last on Oct 20, 2026.

Completion moved twice since we started tracking on Sep 25, 2026: Jan 2027 → Oct 2026, last on Oct 20, 2026.

Earlier changes are on the record history on ClinicalTrials.gov ↗

How these figures are worked out, and which studies are left out of them.

Registered
Sep 10, 2026
First posted
Sep 16, 2026
StartActual
Feb 7, 2026
Primary completionActual
Sep 14, 2026was Dec 2026
CompletionActual
Oct 17, 2026was Jan 2027
Last update
Oct 20, 2026
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
Status
Recruiting→Active, not recruiting→Completed
changed Oct 16, 2026 · changed Oct 20, 2026
Primary completion
Dec 31, 2026→Sep 14, 2026
moved 2 times, Oct 16, 2026 – Oct 20, 2026
Study completion
Jan 31, 2027→Oct 17, 2026 (actual)
moved 2 times, Oct 16, 2026 – Oct 20, 2026
Enrollment
80 (estimated)→90 (actual)
Oct 16, 2026
Show all 2 updates
  1. Oct 20, 2026
    Active, not recruiting→Completed
    Primary completion Oct 6, 2026→Sep 14, 2026
    Study completion Oct 30, 2026→Oct 17, 2026 (now actual)
  2. Oct 16, 2026
    Recruiting→Active, not recruiting
    Primary completion Dec 31, 2026→Oct 6, 2026 (now actual)
    Study completion Jan 31, 2027→Oct 30, 2026
    Enrollment 80 (estimated)→90 (actual)
    + 3 other changes: verification date, contact details and site details

From the registry record's own update history. This site started tracking changes on Sep 25, 2026; for anything earlier, see the record history on ClinicalTrials.gov ↗

10

Registry details

Key details

Study ID
NCT07823400
Lead sponsor
Bursa Yuksek Ihtisas Training and Research Hospital
Responsible party
Umran Karaca (Associate Professor of Anesthesiology and Reanimation, Bursa Yuksek Ihtisas Training and Research Hospital) — Principal investigator
First posted
Sep 16, 2026
Start date
Feb 7, 2026
Primary completion
Sep 14, 2026
Completion
Oct 17, 2026
Last update
Oct 20, 2026

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is completed, as verified in Oct 2026. You cannot join it, but the record below documents what was studied.

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