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JOURNAL ARTICLE
META-ANALYSIS
REVIEW
Antiphospholipid antibodies and lower extremity peripheral arterial disease - a systematic review and meta-analysis.
BACKGROUND: Despite being an important risk factor for venous thromboembolism and ischaemic stroke, the role of antiphospholipid antibodies in patients with peripheral arterial disease remains a matter of debate. The aim of this study was to evaluate the association of persistently elevated antiphospholipid antibodies and lower extremity peripheral arterial disease.
METHODS: We conducted a systematic review of electronic databases including MEDLINE, EUROPUBMED and EMBASE to assess the prevalence of antiphospholipid antibodies in patients with lower extremity peripheral arterial disease. Case-control studies were included if they reported the prevalence of antiphospholipid antibodies in patients with lower extremity peripheral arterial disease. Two reviewers (FV and EG) independently assessed the eligibility of all articles. The primary outcome measure was the odds ratio (OR) for the prevalence of antiphospholipid antibodies patients with lower extremity peripheral arterial disease, along with the corresponding 95 % confidence intervals (CIs).
RESULTS: Our initial electronic search identified 128 relevant abstracts, of which two studies were included. Antiphospholipid antibodies were found in 50/571 patients with lower extremity peripheral arterial disease and 13/490 of the controls, OR 3.32 (95 % CI = 1.49 to 7.4). In those with critical limb ischaemia, the prevalence of antiphospholipid antibodies was elevated compared to controls, pooled OR 4.78 (95 % CI = 2.37 to 9.65).
CONCLUSIONS: Our systematic review and meta-analysis suggests that the prevalence of persistently elevated levels of antiphospholipid antibodies is increased in patients with lower extremity peripheral diseases when compared to healthy controls, especially in those with critical limb ischaemia.
METHODS: We conducted a systematic review of electronic databases including MEDLINE, EUROPUBMED and EMBASE to assess the prevalence of antiphospholipid antibodies in patients with lower extremity peripheral arterial disease. Case-control studies were included if they reported the prevalence of antiphospholipid antibodies in patients with lower extremity peripheral arterial disease. Two reviewers (FV and EG) independently assessed the eligibility of all articles. The primary outcome measure was the odds ratio (OR) for the prevalence of antiphospholipid antibodies patients with lower extremity peripheral arterial disease, along with the corresponding 95 % confidence intervals (CIs).
RESULTS: Our initial electronic search identified 128 relevant abstracts, of which two studies were included. Antiphospholipid antibodies were found in 50/571 patients with lower extremity peripheral arterial disease and 13/490 of the controls, OR 3.32 (95 % CI = 1.49 to 7.4). In those with critical limb ischaemia, the prevalence of antiphospholipid antibodies was elevated compared to controls, pooled OR 4.78 (95 % CI = 2.37 to 9.65).
CONCLUSIONS: Our systematic review and meta-analysis suggests that the prevalence of persistently elevated levels of antiphospholipid antibodies is increased in patients with lower extremity peripheral diseases when compared to healthy controls, especially in those with critical limb ischaemia.
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