11 research outputs found

    Placental Oxidative Status throughout Normal Gestation in Women with Uncomplicated Pregnancies

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    The effects of gestational age on placental oxidative balance throughout gestation were investigated in women with uncomplicated pregnancies. Placental tissues were obtained from normal pregnant women who delivered at term or underwent elective pregnancy termination at 6 to 23 + 6 weeks of pregnancy. Placental tissues were analyzed for total antioxidant capacity (TAC) and lipid peroxide (malondialdehyde, MDA) levels using commercially available kits. Two hundred and one placental tissues were analyzed and the mean ± SD MDA (pmol/mg tissue) and TAC (µmol Trolox equivalent/mg tissue) levels for first, second, and third trimester groups were 277.01 ± 204.66, 202.66 ± 185.05, and 176.97 ± 141.61, P < 0.004 and 498.62 ± 400.74, 454.90 ± 374.44, and 912.19 ± 586.21, P < 0.0001 by ANOVA, respectively. Our data reflects an increased oxidative stress in the placenta in the early phase of normal pregnancy. As pregnancy progressed, placental antioxidant protective mechanisms increased and lipid peroxidation markers decreased resulting in diminution in oxidative stress. Our findings provide a biochemical support to the concept of a hypoxic environment in early pregnancy. A decrease in placental oxidative stress in the second and third trimesters appears to be a physiological phenomenon of normal pregnancy. Deviations from this physiological phenomenon may result in placental-mediated disorders

    Introducing the Dilation and Evacuation Technique in Brazil: Lessons Learned From an International Partnership to Expand Options for Brazilian Women and Girls

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    Dilation and evacuation (D&E) is the recommended surgical procedure for uterine evacuation in the second trimester. Despite its established safety record, it is not routinely available in most countries around the world. In this paper, we describe the multi-phase capacity-building project we undertook to introduce D&E in Brazil. First, we invited a highly motivated obstetrician-gynecologist and abortion provider to complete an observership at an established D&E site in the United States. We then organized a month-long clinical training for two experienced gynecologists in Brazil, followed by ongoing remote mentorship. Almost all patients we approached during the training opted for D&E, and all expressed satisfaction with their experience. Despite the restrictive legal setting and prevailing abortion stigma in Brazil, our training was well-received, and we did not experience any overt resistance from hospital staff. We learned that obtaining institutional support is essential; and that presenting scientific evidence during dedicated didactic times was an important strategy to obtain buy-in from other local healthcare providers. An important challenge we encountered was low case volume given the restrictive legal setting. We addressed this by partnering with nearby hospitals and non-profit organizations for patient referrals. We also rescheduled, adapted and optimized this project for implementation in the midst of the COVID-19 pandemic. Despite the challenges we faced, this project led to the successful introduction of D&E up to 16-18 weeks at two sites in Brazil. In the future, we plan additional training to increase capacity for D&E at more advanced gestational ages

    Placental Oxidative Status throughout Normal Gestation in Women with Uncomplicated Pregnancies

    No full text
    The effects of gestational age on placental oxidative balance throughout gestation were investigated in women with uncomplicated pregnancies. Placental tissues were obtained from normal pregnant women who delivered at term or underwent elective pregnancy termination at 6 to 23 + 6 weeks of pregnancy. Placental tissues were analyzed for total antioxidant capacity (TAC) and lipid peroxide (malondialdehyde, MDA) levels using commercially available kits. Two hundred and one placental tissues were analyzed and the mean ± SD MDA (pmol/mg tissue) and TAC ( mol Trolox equivalent/mg tissue) levels for first, second, and third trimester groups were 277.01 ± 204.66, 202.66 ± 185.05, and 176.97 ± 141.61, P &lt; 0.004 and 498.62 ± 400.74, 454.90 ± 374.44, and 912.19 ± 586.21, P &lt; 0.0001 by ANOVA, respectively. Our data reflects an increased oxidative stress in the placenta in the early phase of normal pregnancy. As pregnancy progressed, placental antioxidant protective mechanisms increased and lipid peroxidation markers decreased resulting in diminution in oxidative stress. Our findings provide a biochemical support to the concept of a hypoxic environment in early pregnancy. A decrease in placental oxidative stress in the second and third trimesters appears to be a physiological phenomenon of normal pregnancy. Deviations from this physiological phenomenon may result in placental-mediated disorders

    Alternative Ultrasound Gel for a Sustainable Ultrasound Program: Application of Human Centered Design

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    <div><p>This paper describes design of a low cost, ultrasound gel from local products applying aspects of Human Centered Design methodology. A multidisciplinary team worked with clinicians who use ultrasound where commercial gel is cost prohibitive and scarce. The team followed the format outlined in the Ideo Took Kit. Research began by defining the challenge "how to create locally available alternative ultrasound gel for a low-resourced environment? The "End-Users," were identified as clinicians who use ultrasound in Democratic Republic of the Congo and Ethiopia. An expert group was identified and queried for possible alternatives to commercial gel. Responses included shampoo, oils, water and cornstarch. Cornstarch, while a reasonable solution, was either not available or too expensive. We then sought deeper knowledge of locally sources materials from local experts, market vendors, to develop a similar product. Suggested solutions gleaned from these interviews were collected and used to create ultrasound gel accounting for cost, image quality, manufacturing capability. Initial prototypes used cassava root flour from Great Lakes Region (DRC, Rwanda, Uganda, Tanzania) and West Africa, and bula from Ethiopia. Prototypes were tested in the field and resulting images evaluated by our user group. A final prototype was then selected. Cassava and bula at a 32 part water, 8 part flour and 4 part salt, heated, mixed then cooled was the product design of choice.</p></div

    Markets in Goma, Addis Ababa, and Bameko.

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    <p>(A) Vendors are interviewed in Addis Ababa Ethiopia at Merkato in Lideta sub city and Addis Ketema by research colleague Alegnta Gebreyesus, MD in Amharik. (B) Vendors are interviewed at the Virunga Market in Goma, DRC by research assistant, Rene Zaidi, in Kiswahili. Commercial ultrasound gel is demonstrated and this vendor suggests banana flour, sorgum or cassava root flour. (C) Vendors are interviewed at Bameko Mali by research assistant, Bouba, in Bambera. The vendor reviews photos of obstetric ultrasounds and suggests banana flour, sorgum or cassava root flour.</p

    Ultrasound images taken with cassava gel.

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    <p>Images of the right upper quadrant FAST exam, positive gall stones and lung sliding taken with a Sonosite 180 ultrasound machine using cassava gel prototype.</p

    Marginal costs of cassava and bula gel.

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    <p>Marginal costs of cassava are 0.08USC and bula is 0.25USD per 240ml bottle. This is assuming no waste and perfect efficiency in production.</p><p>Marginal costs of cassava and bula gel.</p
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