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Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa

Background: The global shift to tenofovir+lamivudine+dolutegravir (TLD) has improved viral suppression in pregnant women living with HIV (WLH) but there are limited data on the combined impact of HIV and maternal body composition on birth outcomes. Methods: We enrolled WLH on TLD and a comparison gr...

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Main Author: Meyer, Jamie
Other Authors: Myer, London
Format: Thesis
Language:English
English
Published: Department of Public Health and Family Medicine 2026
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access_status_str Open Access
author Meyer, Jamie
author2 Myer, London
author_browse Meyer, Jamie
Myer, London
author_facet Myer, London
Meyer, Jamie
author_sort Meyer, Jamie
collection Thesis
description Background: The global shift to tenofovir+lamivudine+dolutegravir (TLD) has improved viral suppression in pregnant women living with HIV (WLH) but there are limited data on the combined impact of HIV and maternal body composition on birth outcomes. Methods: We enrolled WLH on TLD and a comparison group of women not living with HIV (WNLH) seeking antenatal care at primary health facilities in Cape Town. Gestational age (GA) was determined via ultrasound by research sonographer; behavioural and demographic data were collected through questionnaires; anthropometry was through clinical examination. Birth outcome data were abstracted from medical records, including pregnancy loss (miscarriage and stillbirth), prematurity (<37weeks GA), low birthweight (LBW) (<2500g), high birthweight (>400g) and size for GA [including small-(SGA) and large-for-GA (LGA) from Intergrowth estimates. Logistic regression models assessed the association between HIV/TLD and birth outcomes adjusting for maternal age, BMI, alcohol use and education; results are reported as adjusted odds ratios (AOR). Results: We followed 1908 women (804 WLH, 1104 HIV-; mean age 28y, median GA at enrolment, 14w; median BMI at enrolment, 31kg/m2 [IQR, 25-35]. Birth outcomes were known for 1869 women (98%) including 65 miscarriages (3.4%), 35 stillbirths (1.9%) and 1769 live births (1735 singletons). Overall rates of prematurity, LBW, HBW, SGA, HBW and LGA were 9.4%, 12%, 13%, 4% and 12%, respectively, and did not differ between WLH and HIV- women. BMI did not affect the association between HIV/TLD and any birth outcome. Independent of HIV/TLD, higher BMI was associated with reductions in prematurity, LBW and SGA. Conclusion: These results suggest few meaningful differences in birth outcomes between WLH on TLD in this setting, where both HIV and obesity are prevalent. Maternal BMI appears to be a more significant driver of birth outcomes than HIV in this cohort.
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language English
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last_indexed 2026-06-10T12:32:52.713Z
license_str Not specified — see source repository
provenance_str_mv Harvested via OAI-PMH from UCTD — University of Cape Town Open Access Repository
publishDate 2026
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spelling oai:open.uct.ac.za:11427/42527 Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa Meyer, Jamie Myer, London Malaba, Thokozile Pregnancy HIV-infected Women Western Cape South Africa Background: The global shift to tenofovir+lamivudine+dolutegravir (TLD) has improved viral suppression in pregnant women living with HIV (WLH) but there are limited data on the combined impact of HIV and maternal body composition on birth outcomes. Methods: We enrolled WLH on TLD and a comparison group of women not living with HIV (WNLH) seeking antenatal care at primary health facilities in Cape Town. Gestational age (GA) was determined via ultrasound by research sonographer; behavioural and demographic data were collected through questionnaires; anthropometry was through clinical examination. Birth outcome data were abstracted from medical records, including pregnancy loss (miscarriage and stillbirth), prematurity (<37weeks GA), low birthweight (LBW) (<2500g), high birthweight (>400g) and size for GA [including small-(SGA) and large-for-GA (LGA) from Intergrowth estimates. Logistic regression models assessed the association between HIV/TLD and birth outcomes adjusting for maternal age, BMI, alcohol use and education; results are reported as adjusted odds ratios (AOR). Results: We followed 1908 women (804 WLH, 1104 HIV-; mean age 28y, median GA at enrolment, 14w; median BMI at enrolment, 31kg/m2 [IQR, 25-35]. Birth outcomes were known for 1869 women (98%) including 65 miscarriages (3.4%), 35 stillbirths (1.9%) and 1769 live births (1735 singletons). Overall rates of prematurity, LBW, HBW, SGA, HBW and LGA were 9.4%, 12%, 13%, 4% and 12%, respectively, and did not differ between WLH and HIV- women. BMI did not affect the association between HIV/TLD and any birth outcome. Independent of HIV/TLD, higher BMI was associated with reductions in prematurity, LBW and SGA. Conclusion: These results suggest few meaningful differences in birth outcomes between WLH on TLD in this setting, where both HIV and obesity are prevalent. Maternal BMI appears to be a more significant driver of birth outcomes than HIV in this cohort. 2026-01-09T12:10:36Z 2026-01-09T12:10:36Z 2025 2026-01-05T12:52:25Z Thesis / Dissertation Masters MSc http://hdl.handle.net/11427/42527 en eng application/pdf Department of Public Health and Family Medicine Faculty of Health Sciences University of Cape Town
spellingShingle Pregnancy
HIV-infected Women
Western Cape
South Africa
Meyer, Jamie
Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
thesis_degree_str Master's
title Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
title_full Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
title_fullStr Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
title_full_unstemmed Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
title_short Impact of DTG Use During Pregnancy on Birth Outcomes of HIV-Infected Women in the Western Cape, South Africa
title_sort impact of dtg use during pregnancy on birth outcomes of hiv infected women in the western cape south africa
topic Pregnancy
HIV-infected Women
Western Cape
South Africa
url http://hdl.handle.net/11427/42527
work_keys_str_mv AT meyerjamie impactofdtguseduringpregnancyonbirthoutcomesofhivinfectedwomeninthewesterncapesouthafrica