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Primary hyperlipoproteinemias as risk factors in peripheral artery disease documented by arteriography
Insights
Peripheral vascular disease (PVD) severity correlates with risk factors like hyperlipoproteinemia and diabetes. Lesion location varies by PVD type, with pelvic vessels affected in Type IIa and distal arteries in diabetics and Type IV.
Area of Science:
- Vascular Medicine
- Cardiology
- Angiology
Background:
- Peripheral vascular disease (PVD) is a significant health concern.
- Risk factors such as hyperlipoproteinemia, diabetes, obesity, hypertension, and smoking are implicated in PVD.
- Understanding the relationship between these risk factors and the characteristics of atherosclerotic lesions is crucial for patient management.
Purpose of the Study:
- To investigate the correlation between various risk factors and the degree and localization of atherosclerotic lesions in patients with PVD.
- To differentiate lesion patterns based on PVD type, metabolic status, and specific risk factors.
Main Methods:
- A controlled study involving 121 PVD patients.
- Patient groups included primary hyperlipoproteinemia (Type IIa, IIb), diabetes, and those without metabolic disease.
- Angiography was used to assess the degree and localization of sclerotic lesions.
- Risk factors analyzed: hyperlipoproteinemia, obesity, hypertension, abnormal glucose tolerance, and smoking.
Main Results:
- Lesion severity directly correlated with the number of risk factors across all patients.
- In Type IIa hyperlipoproteinemia, lesion degree correlated with cholesterol levels.
- In diabetics and Type IV with abnormal glucose tolerance, lesion degree correlated with age; these patients were older and had more risk factors.
- Pelvic vessels were predominantly affected in Type IIa, less so in Type IIb.
- Diabetics and Type IV patients showed significant distal arterial involvement.
- Cholesterol-triglyceride ratio positively correlated with lesion degree in pelvic and distal limb arteries.
- Smoking worsened pelvic lesions in Type IV; hypertension exacerbated distal limb lesions in Type II.
- S-shaped tortuosity of large vessels was a common finding, irrespective of lesion characteristics.
Conclusions:
- The number of risk factors is a key determinant of PVD lesion severity.
- Specific metabolic profiles (hyperlipoproteinemia types, diabetes) are associated with distinct patterns of arterial involvement.
- Age is a significant factor in lesion progression for diabetic and Type IV patients.
- Cholesterol-triglyceride ratio, smoking, and hypertension play specific roles in lesion development and localization.
Abstract:
In a controlled study on 121 patients with peripheral vascular disease (PVD) (75 patients with primary hyperlipoproteinemia, 15 diabetics, 31 patients without metabolic disease) the relationship between risk factors (hyperlipoproteinemia, obesity, hypertension, abnormal glucose tolerance, smoking) and the degree and localisation of sclerotic lesions was investigated by angiography. The degree was directly related in all patients to the number of risk factors, in Type IIa to cholesterol levels, in diabetics and Type IV with abnormal glucose tolerance to age. The latter patients were 5-10 years older than patients with Type IIa and showed 2 or more additional risk factors. The sclerotic lesions affected in Type IIa, less in Type IIb, predominately the pelvic vessels. Diabetics and Type IV patients showed a distal arterial involvement. The difference was significant. The degree of sclerotic lesions in arteries of the pelvis and the distal lower limb was positively correlated with the cholesterol-triglyceride ratio. Smoking aggravated the pelvic lesions in Type IV. Hypertension lead to more pronounced lesions of the distal lower limb in Type II. S-shaped tortuosities of the big vessels were shown to be typical, independent of localisation or degree.