Deze pagina is automatisch vertaald en de nauwkeurigheid van de vertaling kan niet worden gegarandeerd. Raadpleeg de Engelse versie voor een brontekst.

Comparison Between Different Insulin Resistance Markers and Their Correlation With Severity of Coronary Artery Disease in Non-diabetic Patients.

9 november 2026 bijgewerkt door: Ahmed Mostafa Ahmed Mostafa, Sohag University

This study aims to investigate the association between insulin resistance (IR) and coronary artery disease (CAD) in non-diabetic patients. Furthermore, it evaluates the predictive value of multiple insulin resistance indices - specifically, the homeostatic model assessment for insulin resistance (HOMA-IR), Metabolic score for insulin resistance (METS-IR), Triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio, and triglyceride and glucose (TyG) index, as non-invasive markers of coronary artery disease severity. The diagnostic performance of these indices will be compared among patients with suspected CAD undergoing coronary angiography at the cardiac catheterization unit at Sohag University Hospital.

Studie Overzicht

Toestand

Nog niet aan het werven

Conditie

Interventie / Behandeling

Studietype

Observationeel

Inschrijving (Geschat)

60

Contacten en locaties

In dit gedeelte vindt u de contactgegevens van degenen die het onderzoek uitvoeren en informatie over waar dit onderzoek wordt uitgevoerd.

Studiecontact

Studie Contact Back-up

Studie Locaties

Deelname Criteria

Onderzoekers zoeken naar mensen die aan een bepaalde beschrijving voldoen, de zogenaamde geschiktheidscriteria. Enkele voorbeelden van deze criteria zijn iemands algemene gezondheidstoestand of eerdere behandelingen.

Geschiktheidscriteria

Leeftijden die in aanmerking komen voor studie

18 jaar en ouder (Volwassen, Oudere volwassene)

Accepteert gezonde vrijwilligers

Nee

Geslachten die in aanmerking komen voor studie

Allemaal

Bemonsteringsmethode

Kanssteekproef

Studie Bevolking

patients indicated for coronary angiography in sohag university hospital

Beschrijving

Inclusion Criteria:

  • Aged ≥18 year.
  • Both sexes
  • Non-diabetic patients based on glycosylated hemoglobin (HbA1c) .
  • Patient with Ischemic heart disease indicated for coronary angiography.

Exclusion Criteria:

  • Patients age less than 18 years old.
  • Insulin dependent diabetes
  • Pregnant women
  • End-stage renal disease on dialysis.

Studie plan

Dit gedeelte bevat details van het studieplan, inclusief hoe de studie is opgezet en wat de studie meet.

Hoe is de studie opgezet?

Ontwerpdetails

  • Observatiemodellen: COHORT
  • Tijdsperspectieven: CROSS_SECTIONAL

Cohorten en interventies

Groep / Cohort
Interventie / Behandeling
group 1 patients indicated for coronary angiography

evaluates the predictive value of multiple insulin resistance indices - specifically, the homeostatic model assessment for insulin resistance (HOMA-IR), Metabolic score for insulin resistance (METS-IR), Triglyceride to high-density lipoprotein cholesterol (TG/HDL-C) ratio, and triglyceride and glucose (TyG) index, as non-invasive markers of coronary artery disease severity.

Wat meet het onderzoek?

Primaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Association between Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)
Tijdsspanne: baseline, before coronary angiography, within the 2-hour assessment period.

Insulin resistance will be assessed using the Homeostatic Model Assessment of Insulin Resistance (HOMA-IR), calculated as fasting plasma glucose and fasting insulin levels according to the following formula: HOMA-IR = [FPG (mg/dL) x fasting insulin (microU/mL)] / 405.

Results will be reported as a continuous, dimensionless index; higher values indicate greater insulin resistance.

The association between HOMA-IR and coronary artery disease severity will be evaluated using coronary angiographic findings, including SYNTAX score and TIMI flow grade.

baseline, before coronary angiography, within the 2-hour assessment period.
Association between Metabolic Score for Insulin Resistance (METS-IR) and coronary artery disease severity.
Tijdsspanne: baseline, prior coronary angiography, within the 2-hour assessment period.

METS-IR will be calculated according to the following formula: Ln[(2 × fasting plasma glucose (mg/dL)) + fasting triglycerides (mg/dL)] × body mass index (kg/m²) ÷ Ln[HDL-cholesterol (mg/dL)]. Biochemical parameters will be derived from fasting venous blood collected before coronary angiography. Higher scores indicate greater insulin resistance.

The association between METS-IR and coronary artery disease severity will be evaluated using coronary angiographic findings, including SYNTAX score and TIMI flow grade.

baseline, prior coronary angiography, within the 2-hour assessment period.
Association between Triglyceride-Glucose (TyG) Index and coronary artery disease severity.
Tijdsspanne: baseline, prior coronary angiography, within the 2-hour assessment period.

The TyG index will be calculated according to the following formula: Ln[fasting triglycerides (mg/dL) × fasting plasma glucose (mg/dL) ÷ 2], using blood samples collected before coronary angiography. The index is dimensionless and serves as a surrogate marker of insulin resistance, with higher values indicating greater resistance.

The association between TyG index and coronary artery disease severity will be evaluated using coronary angiographic findings, including SYNTAX score and TIMI flow grade.

baseline, prior coronary angiography, within the 2-hour assessment period.
Association between Triglyceride to High-Density Lipoprotein Cholesterol Ratio (TG/HDL-C) and coronary artery disease severity.
Tijdsspanne: Within 2 hours before coronary angiography

The TG/HDL-C ratio will be calculated according to the following formula: fasting serum triglycerides (mg/dL) divided by fasting serum HDL-cholesterol (mg/dL), using blood samples collected before coronary angiography. The ratio is dimensionless and serves as a surrogate marker of insulin resistance, with higher values indicating greater resistance.

The association between TG/HDL-C ratio and coronary artery disease severity will be evaluated using coronary angiographic findings, including SYNTAX score and TIMI flow grade.

Within 2 hours before coronary angiography
Assessment of coronary artery disease severity and anatomical complexity using SYNTAX score.
Tijdsspanne: During coronary angiography

The anatomical complexity and severity of coronary artery disease will be assessed using the SYNTAX score calculated from coronary angiographic images. The SYNTAX score will be calculated based on the number, location, and anatomical characteristics of coronary lesions with diameter stenosis of at least 50% in coronary vessels with a reference diameter of at least 1.5 mm. The total numerical score will be reported; higher scores indicate greater anatomical complexity. Categories are low (≤22), intermediate (23-32), and high (≥33).

The relationship between SYNTAX score and the four insulin resistance markers (HOMA-IR, METS-IR, TyG index, and TG/HDL-C ratio) will be evaluated.

During coronary angiography

Secundaire uitkomstmaten

Uitkomstmaat
Maatregel Beschrijving
Tijdsspanne
Assessment of coronary blood flow using TIMI flow grade.
Tijdsspanne: During coronary angiography

Coronary blood flow in all major coronary arteries will be assessed during coronary angiography using the Thrombolysis in Myocardial Infarction (TIMI) flow grading system. Coronary blood flow will be classified into four grades:

  • TIMI Grade 0: No antegrade flow.
  • TIMI Grade 1: Penetration without distal perfusion.
  • TIMI Grade 2: Partial perfusion with delayed flow.
  • TIMI Grade 3: Complete perfusion. The association between insulin resistance markers and TIMI flow grade will be evaluated
During coronary angiography

Medewerkers en onderzoekers

Hier vindt u mensen en organisaties die betrokken zijn bij dit onderzoek.

Sponsor

Studie record data

Deze datums volgen de voortgang van het onderzoeksdossier en de samenvatting van de ingediende resultaten bij ClinicalTrials.gov. Studieverslagen en gerapporteerde resultaten worden beoordeeld door de National Library of Medicine (NLM) om er zeker van te zijn dat ze voldoen aan specifieke kwaliteitscontrolenormen voordat ze op de openbare website worden geplaatst.

Bestudeer belangrijke data

Studie start (Geschat)

1 november 2026

Primaire voltooiing (Geschat)

1 mei 2027

Studie voltooiing (Geschat)

1 augustus 2027

Studieregistratiedata

Eerst ingediend

22 oktober 2026

Eerst ingediend dat voldeed aan de QC-criteria

5 november 2026

Eerst geplaatst (Werkelijk)

10 november 2026

Updates van studierecords

Laatste update geplaatst (Werkelijk)

12 november 2026

Laatste update ingediend die voldeed aan QC-criteria

9 november 2026

Laatst geverifieerd

1 oktober 2026

Meer informatie

Termen gerelateerd aan deze studie

Andere studie-ID-nummers

  • Soh-Med-26-10-9MS

Plan Individuele Deelnemersgegevens (IPD)

Bent u van plan om gegevens van individuele deelnemers (IPD) te delen?

ONBESLIST

Deze informatie is zonder wijzigingen rechtstreeks van de website clinicaltrials.gov gehaald. Als u verzoeken heeft om uw onderzoeksgegevens te wijzigen, te verwijderen of bij te werken, neem dan contact op met register@clinicaltrials.gov. Zodra er een wijziging wordt doorgevoerd op clinicaltrials.gov, wordt deze ook automatisch bijgewerkt op onze website .