Maternal and Child Health Journal
Volume 19, Issue 1, January 2015
http://link.springer.com/journal/10995/19/1/page/1

Maternal–Fetal Impact of Vitamin D Deficiency: A Critical Review
Letícia Schwerz Weinert, Sandra Pinho Silveiro
Abstract
Research into the extra-skeletal functions of vitamin D has been expanding in recent years. During pregnancy, maternal vitamin D status may be of concern because of the key role of this vitamin in fetal skeletal development and due to the association between hypovitaminosis D and adverse maternal–fetal outcomes. Therefore, the objective of this manuscript was to review the maternal–fetal impact of gestational vitamin D deficiency and the benefits of vitamin D supplementation during pregnancy. A literature search was performed in PubMed and Embase employing the following keywords: vitamin D deficiency, pregnancy, 25-hydroxyvitamin D, and hypovitaminosis D. All relevant articles in English language published since 1980 were analysed by the two authors. Neonatal complications derived from vitamin D deficiency include low birth weight, growth restriction, and respiratory tract infection. In the mother, vitamin D deficiency has been associated with altered glucose homeostasis and increased incidence of gestational diabetes mellitus, pre-eclampsia, and bacterial vaginosis. However, the current state of the evidence is controversial for some other endpoints and the actual benefit of vitamin D supplementation in pregnancy remains unclear. Additional longitudinal studies may clarify the actual impact of vitamin D deficiency during pregnancy, and randomised trials are required to define the benefits of vitamin D supplementation in reducing the incidence of adverse outcomes in the mother and infant.

Skilled Birth Attendants in Tanzania: A Descriptive Study of Cadres and Emergency Obstetric Care Signal Functions Performed
Etsuko Ueno, Adetoro A. Adegoke, Gileard Masenga, Janeth Fimbo, Sia E. Msuya
Abstract
Although most developing countries monitor the proportion of births attended by skilled birth attendants (SBA), they lack information on the availability and performance of emergency obstetric care (EmOC) signal functions by different cadres of health care providers (HCPs). The World Health Organisation signal functions are set of key interventions that targets direct obstetric causes of maternal deaths. Seven signal functions are required for health facilities providing basic EmOC and nine for facilities providing comprehensive EmOC. Our objectives were to describe cadres of HCPs who are considered SBAs in Tanzania, the EmOC signal functions they perform and challenges associated with performance of EmOC signal functions. We conducted a cross-sectional study of HCPs offering maternity care services at eight health facilities in Moshi Urban District in northern Tanzania. A questionnaire and health facility assessment forms were used to collect information from participants and health facilities. A total of 199 HCPs working at eight health facilities in Moshi Urban District met the inclusion criteria. Out of 199, 158 participated, giving a response rate of 79.4 %. Ten cadres of HCPs were identified as conducting deliveries regardless of the level of health facilities. Most of the participants (81 %) considered themselves SBAs, although some were not considered SBAs by the Ministry of Health and Social Welfare (MOHSW). Only two out of the eight facilities provided all of the required EmOC signal functions. While Assistant Medical Officers are expected to perform all the signal functions, only 38 % and 13 % had performed vacuum extraction or caesarean sections respectively. Very few registered and enrolled nurse-midwives had performed removal of retained products (22 %) or assisted vaginal delivery (24 and 11 %). Inadequate equipment and supplies, and lack of knowledge and skills in performing EmOC were two main challenges identified by health care providers in all the level of care. In the district, gaps existed between performance of EmOC signal functions by SBAs as expected by the MOHSW and the actual performance at health facilities. All basic EmOC facilities were not fully functional. Few health care providers performed all the basic EmOC signal functions. Competency-based in-service training of providers in EmOC and provision of enabling environment could improve performance of EmOC signal functions in the district.