Controversies in postpartum contraception: when is it safe to start oral contraceptives after childbirth?

The paradigm of norgestimate: a third-generation testosterone-derivative progestin with a peripheral anti-androgenic activity and the lowest risk of venous thromboembolism

INTRODUCTION

Norgestimate (NGM) is a testosterone derivative with peculiar receptor activities.

AREAS COVERED

This is a narrative review of the available data on the pharmacotherapy of NGM in combined hormonal contraceptives (CHCs) in terms of contraceptive efficacy, venous thromboembolism (VTE) risk, safety, tolerability and bleeding patterns. A comprehensive literature review was conducted in August 2020 using PubMed with the keyword 'norgestimate'.

EXPERT OPINION

NGM shows a mild estrogenic activity associated with anti-mineralocorticoid and anti-androgenic properties, largely responsible for the cardiovascular safety profile. The anti-androgenic property depends on the androgen receptor (AR) nuclear translocation (AR trafficking and its subnuclear distribution), the inhibition of 5α-reductase activity (it possesses higher activity compared to other available progestins), and the increase on sexual hormone binding globulin (SHBG) levels if combined with an estrogenic counterpart. NGM is one of the molecules that best modulates the power of ethinyl-estradiol on the thromboembolic risk, being associated with the lowest VTE risk between different CHCs. NGM has the advantage of retaining peripheral anti-androgenic activity, demonstrated by the impact on lipid and glucose metabolism, and it should be preferred if compared with other similar progestins of the same class of risk which are much more androgenic, such as levonorgestrel.

Prevalence of unmet need for contraception and its association with unwanted pregnancy among married women in Angola

Background

Unmet need for contraception and unwanted pregnancy are recognised as significant barriers to promoting women’s reproductive health and well-being. Currently there is no research evidence on these two crucial indicators of reproductive care in Angola. Therefore, we conducted this study with the objectives of exploring the current prevalence of unmet need for contraception and unintended pregnancy as well as their relationship among married women in Angola.

Methods

This study was based on cross-sectional data from Angola Demographic and Health Survey (DHS) conducted in 2015–16. Participants were 7,808 married women aged 15–49 years. Unwanted pregnancy was measured in terms of the mistimed and unintended conception for the last-born child. Unmet need for contraception included those who reported unmet need for spacing and limiting. Data were analysed using bivariate and multivariable techniques.

Results

The combined prevalence of mistimed and unwanted pregnancy was 38.3% (95%CI = 35.9–40.7), and that of unmet need for contraception for spacing and limiting was 51.7% (49.9–53.5). Among the 18 regions, Luanda had the highest prevalence of unmet need for contraception and of unwanted pregnancy with the prevalence being higher than more than one-third of the women. Multivariable analysis significantly revealed a significantly positive association between unmet need and unwanted pregnancy. In all the models, the odds of unwanted pregnancy were found to be as high as four times among women with unmet need compared with those had no unmet need. Compared to women who had no unmet need, those who had unmet need had respectively four (OR = 4.380; 95%CI = 3.690–5.198) and seven (OR = 6.951; 95%CI = 4.642–10.410) times higher odds of experiencing unwanted pregnancy.

Conclusion

This study concludes that the prevalence of unmet need for contraception and unwanted pregnancy are high with significant disparities across the regions. Women in the capital city had the highest prevalence of both unmet need for contraception and unwanted pregnancy. Although the data were cross-sectional and do not indicate causal relationships, the findings showed a strong positive association between unmet need for contraception and unwanted pregnancy. However, it is recommended to conduct further studies to replicate the findings and to explore the influence behavioural and cultural practices on unwanted pregnancy.

Timely initiation of postpartum contraceptive utilization and associated factors among women of child bearing age in Aroressa District, Southern Ethiopia: a community based cross-sectional study

BACKGROUND

Globally, more than 90% of women during the first year of postpartum period want to either delay or avoid future pregnancies. The first year postpartum period is more crucial time to use modern contraceptives that enhance maternal and child health, so more attention should be given on time of initiating modern contraceptive utilization after delivery. Therefore, the aim of this study was to assess the magnitude and associated factors of timely initiation of postpartum contraceptive utilization among women of child bearing age in Aroressa district, Southern Ethiopia.

METHODS

The study was conducted in Aroressa district from March 15 to April 15, 2017. A community based cross-sectional study design with interviewer administered structured and pretested questionnaire was used. Multistage sampling technique was employed involving a total of 695 women of child bearing age who delivered a child in the past 12 months prior to the study period. Data were cleaned, coded and entered into Epi data version 3.1, then exported to statistical package for social science version 20 for analysis. Descriptive statistics, Bivariate and Multivariate logistic regression analysis were done. p-value < 0.05 was used to consider significant variables.

RESULTS

The magnitude of timely initiation of postpartum contraceptive utilization was found to be 31.7% [95% CI (28, 36)]. Antenatal care [AOR = 1.94, 95% CI (1.23, 3.01)], postnatal care [AOR = 1.90, 95%CI (1.23, 2.94)], spousal communication on contraceptive methods [AOR = 1.63, 95% CI (1.09, 2.41)] and resumption of menses after delivery [AOR = 2.6, 95% CI (1.47, 3.81)] were predictors positively associated with timely initiation of postpartum contraceptive utilization.

CONCLUSION

The magnitude of timely initiation of postpartum contraceptive utilization was low. Strengthening integration of family planning information with antenatal and postnatal care follow up and encouraging spousal communication by promoting information, education and communication activities is important to enhance contraceptive use on timely manner.

A systematic review and meta-analysis of venous thrombosis risk among users of combined oral contraception

Background

Combined oral contraceptives (COCs) containing various progestogens could be associated with differential risks for venous thromboembolism (VTE).

Objective

To evaluate the comparative risks of VTE associated with the use of low‐dose (less than 50 μg ethinyl estradiol) COCs containing different progestogens.

Search strategy

PubMed and the Cochrane Library were searched from database inception through September 15, 2016, by combining search terms for oral contraception and venous thrombosis.

Selection criteria

Studies reporting VTE risk estimates among healthy users of progestogen‐containing low‐dose COCs were included.

Data collection and analysis

A random‐effects model was used to generate pooled adjusted risk ratios and 95% confidence intervals; subgroup and sensitivity analyses assessed the impact of monophasic‐COC use and study‐level characteristics.

Main results

There were 22 articles included in the analysis. The use of COCs containing cyproterone acetate, desogestrel, drospirenone, or gestodene was associated with a significantly increased risk of VTE compared with the use of levonorgestrel‐containing COCs (pooled risk ratios 1.5–2.0). The analysis restricted to monophasic COC formulations with 30 μg of ethinyl estradiol yielded similar findings. After adjustment for study characteristics, the risk estimates were slightly attenuated.

Conclusions

Compared with the use of levonorgestrel‐containing COCs, the use of COCs containing other progestogens could be associated with a small increase in risk for VTE.

Combined oral contraceptives containing certain progestogens could be associated with a small increase in risk for venous thromboembolism compared with those containing levonorgestrel.

Postpartum intentions on contraception use and method choice among breastfeeding women attending a university hospital in Ohio: a cross-sectional study

BACKGROUND

Few postpartum women use effective contraception and those who use less effective methods have increased rates of unintended pregnancy. Little is known about postpartum contraception intentions among breastfeeding women. Our objectives were to measure the extent of prenatal contraceptive counseling, to assess contraceptive intentions, and to identify correlates of both among postpartum women who were planning to breastfeed.

METHODS

We conducted a cross-sectional study using a convenience sample of 100 breastfeeding women before their discharge following delivery at a large university hospital in 2015. We used logistic regression to assess three outcomes of interest: not intending to use contraception before 6 months postpartum, reporting receiving counseling on postpartum contraception during prenatal care, and considering the effects of contraception methods on the breastfeeding mother-infant dyad when choosing a postpartum contraception method.

RESULTS

Most women (91%) intended to use contraception. Prior history of no contraception use was the sole factor related to not intending to use contraception. The most commonly cited reason for the intended choice of contraceptive method was convenience (35%). Few women (21%) reported considering the effects of contraception methods on the breastfeeding dyad when choosing a postpartum contraception method. Nearly half of women reported never discussing postpartum contraception options with their healthcare provider during prenatal care. In the multivariate analysis, receiving public assistance was the only factor that remained statistically significantly associated with reporting having received contraception counseling during prenatal care.

CONCLUSIONS

Although most women intended to use contraception, they did not appear to have received adequate prenatal counseling on postpartum contraception.

Prevention of perinatal transmission of human immunodeficiency virus

The reproductive health needs of all women of childbearing age should routinely address effective and appropriate contraception, safer sex practices, and elimination of alcohol, illicit drugs and tobacco should pregnancy occur. Combined antepartum, intrapartum, and infant antiretroviral (ARV) prophylaxis are recommended because ARV drugs reduce perinatal transmission by several mechanisms, including lowering maternal viral load and providing infant pre- and post-exposure prophylaxis. Scheduled cesarean delivery at 38 weeks with IV AZT decreases the risk of perinatal transmission if the HIV RNA is greater than 1000 copies/mL or if HIV levels are unknown near the time of delivery. Oral AZT should generally be given for at least 6 weeks to all infants perinatally exposed to HIV to reduce perinatal transmission of HIV.