Assement of Left Ventricular Function Before Decannulation in Cardiac Surgery :Visual Estimation vs TEE
NCT ID: NCT07286227
Last Updated: 2025-12-16
Study Results
The study team has not published outcome measurements, participant flow, or safety data for this trial yet. Check back later for updates.
Basic Information
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NOT_YET_RECRUITING
70 participants
OBSERVATIONAL
2026-01-01
2026-12-02
Brief Summary
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Detailed Description
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Thus, the primary rationale for this study is to fill this gap in the scientific literature and determine how well the surgeon's quick, experience-based visual estimation aligns with the objective findings of TEE, the gold-standard method.
The main objective of the study is to evaluate the diagnostic performance of the cardiovascular surgeon's visual estimation of LV function before decannulation following cardiopulmonary bypass, using TEE results as the reference standard. In other words, it aims to statistically determine the agreement between the surgeon's practical visual assessment and the objective measurements provided by TEE, thereby offering a scientific basis for clinical decision-making by revealing the sensitivity and specificity limits of the surgeon's estimation, particularly in detecting critical conditions such as severe dysfunction.
Conditions
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Study Design
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COHORT
RETROSPECTIVE
Study Groups
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Cardiopulmonary Bypass Cohort
Patients undergoing elective cardiac surgery with cardiopulmonary bypass (CABG, valve surgery, or aortic procedures). During the decannulation phase, left ventricular function will be assessed visually by the cardiac surgeon (eyeballing method) and objectively by intraoperative transesophageal echocardiography (TEE). No additional intervention is performed. Both evaluations are part of standard intraoperative monitoring. Data will be recorded simultaneously to compare the accuracy and agreement between visual estimation and TEE-derived ejection fraction.
Intraoperative Left Ventricular Function Assessment
Left ventricular function will be assessed during the decannulation phase of cardiopulmonary bypass using two diagnostic methods: (1) visual estimation of ventricular contractility by the cardiac surgeon (eyeballing) and (2) objective measurement using intraoperative transesophageal echocardiography (TEE). No experimental procedure, medication, or additional intervention will be applied. Both assessments are part of standard intraoperative monitoring in cardiac surgery. Data from both methods will be collected simultaneously to compare accuracy, agreement, and diagnostic performance.
Interventions
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Intraoperative Left Ventricular Function Assessment
Left ventricular function will be assessed during the decannulation phase of cardiopulmonary bypass using two diagnostic methods: (1) visual estimation of ventricular contractility by the cardiac surgeon (eyeballing) and (2) objective measurement using intraoperative transesophageal echocardiography (TEE). No experimental procedure, medication, or additional intervention will be applied. Both assessments are part of standard intraoperative monitoring in cardiac surgery. Data from both methods will be collected simultaneously to compare accuracy, agreement, and diagnostic performance.
Other Intervention Names
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Eligibility Criteria
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Inclusion Criteria
* Scheduled for elective cardiac surgery requiring cardiopulmonary bypass (CABG, valve surgery, or aortic surgery)
* ASA physical status III-IV
* Able and willing to provide written informed consent
* Suitable for intraoperative transesophageal echocardiography (TEE)
Exclusion Criteria
* Known severe preoperative left ventricular dysfunction (EF \< 30%)
* Significant arrhythmias (e.g., atrial fibrillation)
* Preoperative requirement for mechanical circulatory support (e.g., IABP)
* Contraindications to TEE (esophageal pathology, bleeding risk, strictures)
* Inability to provide informed consent
18 Years
75 Years
ALL
No
Sponsors
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Ataturk University
OTHER
Responsible Party
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Muhammed E Aydin
DOÇENT.DR
Principal Investigators
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Muhammed Enes Aydın, Principal Investigator
Role: PRINCIPAL_INVESTIGATOR
Ataturk University Department of Anesthesiology and Reanimation
Locations
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Ataturk University
Erzurum, , Turkey (Türkiye)
Countries
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Central Contacts
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Facility Contacts
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References
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Kim H. Weaning from cardiopulmonary bypass. Korean J Anesthesiol. 2013 Jun;64(6):487-8. doi: 10.4097/kjae.2013.64.6.487. No abstract available.
Abazid RM, Abohamr SI, Smettei OA, Qasem MS, Suresh AR, Al Harbi MF, Aljaber AN, Al Motairy AA, Albiela DE, Almutairi BM, Sakr H. Visual versus fully automated assessment of left ventricular ejection fraction. Avicenna J Med. 2018 Apr-Jun;8(2):41-45. doi: 10.4103/ajm.AJM_209_17.
Metkus TS, Thibault D, Grant MC, Badhwar V, Jacobs JP, Lawton J, O'Brien SM, Thourani V, Wegermann ZK, Zwischenberger B, Higgins R. Transesophageal Echocardiography in Patients Undergoing Coronary Artery Bypass Graft Surgery. J Am Coll Cardiol. 2021 Jul 13;78(2):112-122. doi: 10.1016/j.jacc.2021.04.064. Epub 2021 May 3.
Bayram E, Gulcu O, Aksu U, Aksakal E, Birdal O, Kalkan K. Evaluating the Association Between the Three Different Ejection Fraction Measurement Techniques and Left Ventricle Global Strain. Eurasian J Med. 2018 Oct;50(3):173-177. doi: 10.5152/eurasianjmed.2018.17409.
Other Identifiers
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B.30.2.ata.0.01.00/767
Identifier Type: -
Identifier Source: org_study_id