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.
調査の概要
状態
状態
条件
条件
介入・治療
介入・治療
研究の種類
研究の種類
入学 (推定)
入学
連絡先と場所
研究連絡先
研究連絡先
- 名前:Ahmed Mostafa Mostafa
- 電話番号:+201158744246
- メール:ahmed1111mostafa@gmail.com
研究連絡先のバックアップ
- 名前:hager saideldin saideldin
- 電話番号:+201065099621
- メール:hagersaadeldin@gmail.com
研究場所
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Sohag、エジプト、82511
- Sohag University Hospital
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コンタクト:
- Ahmed Mostafa Mostafa
- 電話番号:+201158744246
- メール:ahmed1111mostafa@gmail.com
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-
参加基準
適格基準
適格基準
就学可能な年齢
健康ボランティアの受け入れ
受講資格のある性別
サンプリング方法
調査対象母集団
patients indicated for coronary angiography in sohag university hospital
説明
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.
研究計画
研究はどのように設計されていますか?
デザインの詳細
- 観測モデル:COHORT
- 時間の展望:CROSS_SECTIONAL
グループ/コホートの数
コホートと介入
グループ/コホートグループ/コホート |
介入・治療介入・治療 |
|---|---|
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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. |
この研究は何を測定していますか?
主要な結果の測定
主要な結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
|
Association between Homeostatic Model Assessment of Insulin Resistance (HOMA-IR)
時間枠: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.
時間枠: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.
時間枠: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.
|
|
Association between Triglyceride to High-Density Lipoprotein Cholesterol Ratio (TG/HDL-C) and coronary artery disease severity.
時間枠: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.
時間枠: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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二次結果の測定
二次結果の測定
結果測定 |
メジャーの説明 |
時間枠 |
|---|---|---|
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Assessment of coronary blood flow using TIMI flow grade.
時間枠: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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協力者と研究者
研究記録日
主要日程の研究
研究開始 (推定)
研究開始
一次修了 (推定)
一次修了
研究の完了 (推定)
研究の完了
試験登録日
最初に提出
最初に提出
QC基準を満たした最初の提出物
QC基準を満たした最初の提出物
最初の投稿 (実際)
最初の投稿
学習記録の更新
投稿された最後の更新 (実際)
投稿された最後の更新
QC基準を満たした最後の更新が送信されました
QC基準を満たした最後の更新が送信されました
最終確認日
最終確認日
詳しくは
本研究に関する用語
その他の研究ID番号
その他の研究ID番号
- Soh-Med-26-10-9MS
個々の参加者データ (IPD) の計画
個々の参加者データ (IPD) を共有する予定はありますか?
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