Comparison Between Different Insulin Resistance Markers and Their Correlation With Severity of Coronary Artery Disease in Non-diabetic Patients.
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.
Visão geral do estudo
Status
Condições
Tipo de estudo
Inscrição (Estimado)
Contactos e Locais
Contato de estudo
- Nome: Ahmed Mostafa Mostafa
- Número de telefone: +201158744246
- E-mail: ahmed1111mostafa@gmail.com
Estude backup de contato
- Nome: hager saideldin saideldin
- Número de telefone: +201065099621
- E-mail: hagersaadeldin@gmail.com
Locais de estudo
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Sohag, Egito, 82511
- Sohag University Hospital
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Contato:
- Ahmed Mostafa Mostafa
- Número de telefone: +201158744246
- E-mail: ahmed1111mostafa@gmail.com
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Critérios de participação
Critérios de elegibilidade
Idades elegíveis para estudo
Aceita Voluntários Saudáveis
Gêneros Elegíveis para o Estudo
Método de amostragem
População do estudo
patients indicated for coronary angiography in sohag university hospital
Descrição
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.
Plano de estudo
Como o estudo é projetado?
Detalhes do projeto
- Modelos de observação: COHORT
- Perspectivas de Tempo: CROSS_SECTIONAL
Coortes e Intervenções
Grupo / Coorte |
Intervenção / Tratamento |
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group 1 patients indicated for coronary angiography
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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. |
O que o estudo está medindo?
Medidas de resultados primários
Medida de resultado |
Descrição da medida |
Prazo |
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Association between Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)
Prazo: baseline, before coronary angiography, within the 2-hour assessment period.
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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.
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Association between Metabolic Score for Insulin Resistance (METS-IR) and coronary artery disease severity.
Prazo: baseline, prior coronary angiography, within the 2-hour assessment period.
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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.
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Association between Triglyceride-Glucose (TyG) Index and coronary artery disease severity.
Prazo: baseline, prior coronary angiography, within the 2-hour assessment period.
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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.
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Association between Triglyceride to High-Density Lipoprotein Cholesterol Ratio (TG/HDL-C) and coronary artery disease severity.
Prazo: Within 2 hours before coronary angiography
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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
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Assessment of coronary artery disease severity and anatomical complexity using SYNTAX score.
Prazo: During coronary angiography
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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
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Medidas de resultados secundários
Medida de resultado |
Descrição da medida |
Prazo |
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Assessment of coronary blood flow using TIMI flow grade.
Prazo: During coronary angiography
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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:
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During coronary angiography
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Datas de registro do estudo
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Conclusão do estudo (Estimado)
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Enviado pela primeira vez
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Mais Informações
Termos relacionados a este estudo
Termos MeSH relevantes adicionais
Outros números de identificação do estudo
- Soh-Med-26-10-9MS
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