N/A N=116

Comparison of Bidirectional Palpation Test and Transit Time Flow Measurement for LIMA-LAD Graft Patency

Coronary Arterial Disease (CAD) · Coronary Artery Bypass · LIMA · Graft Patency · LAD (Left Anterior Descending) Coronary Artery Stenosis

Bottom Line

View on ClinicalTrials.gov: NCT06934993 ↗

Enrolled (actual)

116

Serious AEs

0.0%

Results posted

Jul 2025

Primary outcome: Primary: Reliability of Bidirectional Palpation Test (BPT) in Evaluating LIMA-LAD Graft Patency — 2; 2; 2; 2 Participants — p=<0.001

Study Design & Population

Study type: Observational
Phase: N/A
Interventions: —
Age: Adult, Older Adult · 41+ yrs
Sex: All
Sponsor: Abdulgani Orhun YENİGÜN
Primary completion: Aug 2024

Outcome Measures

Outcome	Result	p-value
PRIMARY Reliability of Bidirectional Palpation Test (BPT) in Evaluating LIMA-LAD Graft Patency	2; 2; 2; 2; 71	<0.001 sig
PRIMARY Reliability of TTFM in Evaluating LIMA-LAD Graft Patency	2; 3; 23; 3; 20; 2	0.001 sig
SECONDARY Correlation Between Intraoperative TTFM and BPT Results	2; 2	0.001 sig
SECONDARY The Correlation of SYNTAX 1 and SYNTAX 2 Risk Scores With LIMA-LAD Graft Patency Was Evaluated.	18; 29; 26; 33; 28; 12	0.04 sig

Summary

The most important factor determining mortality and morbidity after coronary artery bypass graft (CABG) surgery is graft patency. The LIMA-LAD anastomosis is the most crucial anastomosis because it's revascularizing the most important and large region of the heart, has superior long-term graft patency rates and is considered the gold standard for CABG. Therefore, ensuring the patency of the LIMA-LAD anastomosis is vital for both early and late outcomes. The bidirectional palpation test (BPT), developed in our clinic to assess graft patency, is a subjective test, yet it is simple and reliable. Additionally, transit time flow meter (TTFM) measurements have also been performed. In this study, the efficacy of BPT and the results of TTFM measurements were compared by examining graft patency through early-period coronary CT angiography (CCTA).

Eligibility Criteria

Inclusion Criteria

Elective Isolated CABG Surgery: Patients undergoing elective isolated coronary artery bypass grafting (CABG).
CABG with Additional Cardiac Surgery: Patients who had CABG surgery in conjunction with other cardiac procedures.
Informed Consent: Patients who provided informed consent to participate in the study.
Postoperative Follow-Up: Patients who were followed up postoperatively and completed the necessary evaluations.
CABG patients whose renal functions are suitable for CTA

Exclusion Criteria

Refusal to Participate: Patients who did not wish to participate in the study after being approached.

Death in Early Postoperative Period: Patients who died in the early postoperative period (3 patients).

Inability to Perform CABG: Patients for whom CABG could not be performed due to postoperative complications (e.g., elevated creatinine levels leading to inability to perform CABG, 43 patients).

Patients in whom CT angiography is not appropriate: Such as acute or chronic renal failure

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Data sourced from ClinicalTrials.gov (NCT06934993). Outcome figures and adverse-event rates are extracted automatically from the registry's posted results and are provided for clinician reference, not as a substitute for the primary publication.