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The prevalence and characteristics of impaired vascular compliance among PWH with low body mass index (BMI) is not well described, particularly in sub-Saharan Africa (SSA) where the majority of PWH live, a low BMI is more common, and the burden of CVD is rising.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Aim<\/jats:title>\n                <jats:p>To assess non-invasive vascular compliance measurements, including augmentation index (AIX), pulse wave velocity (PWV) and pulse waveforms, in underweight, normal weight, and overweight PWH on long-term antiretroviral therapy (ART) in SSA.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Methods<\/jats:title>\n                <jats:p>A cross-sectional study among PWH on ART at the University Teaching Hospital in Lusaka, Zambia. All participants had been on a regimen of efavirenz, emtricitabine, and tenofovir disoproxil fumarate for five or more years. Carotid-femoral PWV (cfPWV), carotid-radial PWV (crPWV), and the corresponding augmentation indexes (cfAIX and crAIX), were measured in all participants, in addition to aortic pressure waveforms, classified as type A, B, C and D according to reflected wave timings and amplitude. Multiple linear regression assessed relationships between demographic and clinical factors with vascular measurement endpoints.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Results<\/jats:title>\n                <jats:p>Ninety one PWH on long-term ART were enrolled; 38 (42%) were underweight (BMI\u2009&lt;\u200918.5\u00a0kg\/m<jats:sup>2<\/jats:sup>), 43 (47%) were normal weight (18.5\u201324.9\u00a0kg\/m<jats:sup>2<\/jats:sup>) and 10 (11%) were overweight (&gt;\u200925\u00a0kg\/m<jats:sup>2<\/jats:sup>). Median age was 41, 40 and 40\u00a0years, among the three groups, respectively, and the proportion of women increased with BMI level. Overweight participants had a 39% higher cfAIX compared to normal-weight participants, while being underweight was associated with 27% lower cfAIX, after adjusting for age, sex and blood pressure (<jats:italic>P<\/jats:italic>\u2009=\u20090.02 and <jats:italic>P<\/jats:italic>\u2009=\u20090.01, respectively), but measurements of cfPWV, crPWV and crAIX did not differ.<\/jats:p>\n              <\/jats:sec><jats:sec>\n                <jats:title>Conclusion<\/jats:title>\n                <jats:p>Underweight PWH in SSA had lower cfAIX measurements compared to normal weight individuals, indicating less arterial stiffness. However, similar cfPWV, crPWV and crAIX values among the underweight and overweight PWH suggest a low BMI may not confer substantial protection against impaired vascular compliance as a contributor to CVD risk among individuals on ART.<\/jats:p>\n              <\/jats:sec>","DOI":"10.1186\/s12872-023-03093-2","type":"journal-article","created":{"date-parts":[[2023,2,3]],"date-time":"2023-02-03T11:03:14Z","timestamp":1675422194000},"update-policy":"http:\/\/dx.doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":3,"title":["Vascular dysfunction and body mass index in African adults with HIV"],"prefix":"10.1186","volume":"23","author":[{"given":"Longa","family":"Kaluba","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Theresa","family":"Chikopela","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Fastone","family":"Goma","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mordecai","family":"Malambo","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Wilbroad","family":"Mutale","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Douglas C.","family":"Heimburger","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"John R.","family":"Koethe","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"297","published-online":{"date-parts":[[2023,2,3]]},"reference":[{"issue":"11","key":"3093_CR1","doi-asserted-by":"publisher","first-page":"1100","DOI":"10.1161\/CIRCULATIONAHA.117.033369","volume":"138","author":"ASV Shah","year":"2018","unstructured":"Shah ASV, Stelzle D, Lee KK, Beck EJ, Alam S, Clifford S, et al. 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