Tag Archives: peripheral arterial disease

Correlations of Endogenous Testosterone and DHEA-S in Peripheral Arterial Disease

DOI: 10.1515/amma-2016-0021

Background: there is an overt bias between cardiovascular morbidity and mortality in male and female patients. Research of the past decades postulated that this difference could be due to the lipid-lowering effect of male sexual-steroids, that show decreased values in cardiovascular disease.
Methods: the aim of our study was to determine total serum testosterone and dehydroepiandrosterone sulfate (DHEA-S) on a peripheral arterial disease patient’s cohort (n=35), in comparison with a healthy control group, (n=23) and to establish correlations with other biological risk factors like serum lipids, C-reactive protein, plasma fibrinogen, and the ankle-brachial pressure index.
Results: our results showed that total serum testosterone and DHEA-S were significantly decreased in PAD patients in comparison to the control group. We could not observe any significant correlation with the presence of critical ischemia, the levels of total cholesterol, HDL-cholesterol, triglycerides, lipoprotein (a), C-reactive protein or plasma fibrinogen.
Conclusion: these results express that low androgen levels could be implicated in the pathogenesis of peripheral arterial disease, but testosterone and DHEA-S are not markers of disease severity. The elucidation of their exact role needs larger, population-based studies.

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Accuracy of Ankle-Brachial Index Measurements in Evaluation of Critical Leg Ischemia

DOI: 10.2478/amma-2013-0019

Aims: The ankle-brachial index is an efficient tool for objectively documenting the presence of lower extremity peripheral artery disease. However, its applicability for detection of critical leg ischemia is still controversial. We proposed to determine the diagnostic accuracy of the ankle-brachial index for critical ischemia.
Materials and methods: Systolic blood pressure measurements for calculation of the ankle-brachial index were obtained in 90 patients with peripheral artery disease. Ankle-brachial index was computed in 3 different ways (using the lowest ankle pressure, the highest ankle pressure, and the mean of the ankle pressures), sensibility, specificity, positive and negative predictive value and overall accuracy for detecting critical ischemia were determined for each method. A value ≤ 0.4 was taken as cut-off point for critical leg ischemia. Prevalence of coronary and cerebrovascular atherosclerosis and conventional risk factors were also noted.
Results: Using the lowest ankle pressure for computing ankle-brachial index provided higher sensitivity, and lower specificity for detecting critical leg ischemia, using the highest pressure was less sensitive, but more specific, and the mean pressure index gave intermediate results. Overall accuracy was highest for the latest method. The prevalence of generalized atherosclerosis was high in peripheral artery disease, but we found no significant difference between the intermittent claudication and the critical ischemia group.
Conclusion: Ankle-brachial index measurements, regardless of the method used for calculation, cannot identify or rule out reliably critical leg ischemia. Peripheral artery disease confers an increased risk of cardiovascular disease regardless of symptom status or lower extremity perfusion severity.

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Is There a Risk Factor More Responsible for Disaster?

DOI: 10.1515/amma-2015-0054

Background: Risk factors for peripheral arterial disease are generally the same as those responsible for the ischemic heart disease and in both cases are overlapping risk factors involved in the etiology of atherosclerosis, such as smoking, dyslipidemia, diabetes and hypertension.
Case report: We present a case of a 61 years old male, whose ischemic peripheral symptoms began in 2003, at the age of 49, presenting as a Leriche syndrome. The patient was subjected to first revascularization procedure consisting in aortic-bifemoral grafting in the same year. General examination revealed no risk factors except smoking. Only a year after, he returns with critical right lower limb ischemia due to bypass thrombosis, therefore two thrombectomies were performed followed by a right side femoro-popliteal bypassing with Dacron prosthesis. The patient’s condition was good until 2008 when a femoro-popliteal bypass using inverted autologus saphenous vein was imposed due to occlusion of the previous graft. In 2013 the patient was readmitted to hospital with left lower limb critical ischemia. A femoro-popliteal bypass was performed, followed by two thrombectomies and the amputation of the left thigh. Up to this date, the patient kept smoking.
Discussions: Although our patient has a low/medium risk level of atherosclerosis by Framingham score and a minimum Prevent III score, all the surgical revascularization procedures were not able to avoid the amputation.
Conclusions: There are enough reasons to believe that smoking as a single risk factor can strongly influence the unfavorable progression to amputation in patients with peripheral arterial disease.

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