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Heatwaves in sub-Saharan Africa are predicted to become more common due to climate change. A new study by researchers at Karolinska Institutet and others, published in Nature Medicine, reveals a worrying correlation between high temperatures in the final week of pregnancy and an increased risk of stillbirth and early neonatal mortality.

In first-time mothers requiring vacuum-assisted delivery, a lateral episiotomy (angled cut) in the tissue between the vaginal and anal opening more than halves the risk of obstetric anal sphincter injury, a severe form of perineal trauma between the vulva and anus. This according to a randomised clinical study led by researchers at Karolinska Institutet and Stockholm’s Danderyd Hospital, the results of which are published in The BMJ.

Hos förstföderskor kan ett snedklipp i slidöppningen vid förlossning med sugklocka mer än halvera risken för sfinkterskada, en allvarlig bristning mellan slidan och ändtarmsöppningen. Det visar en randomiserad klinisk studie ledd av forskare vid Karolinska Institutet och Danderyds sjukhus. Resultaten har publicerats i den ansedda tidskriften BMJ.

Women who suffer depression during or after pregnancy have a higher risk of death by both natural and unnatural causes, a new study of childbirth in Sweden published in The BMJ reports. The increased risk peaks in the month after diagnosis but remains elevated for as long as 18 years afterwards.

Researchers at Karolinska Institutet and the Public Health Agency of Sweden have studied newborn babies whose mothers tested positive for SARS-CoV-2 during pregnancy or childbirth. The results show that although babies born of test-positive mothers are more likely to be born early, extremely few were infected with COVID-19. The study, which is published in the esteemed journal JAMA, supports the Swedish recommendation not to separate mother and baby after delivery.

Nästan var tionde kvinna som föder barn har en negativ förlossningsupplevelse. Enligt en nationell rutin skattar nyförlösta kvinnor sin förlossningsupplevelse på skalan 1–10, men det är ännu okänt vad mätningen fångar. I en studie på Akademiska sjukhuset ska mätmetoden för första gången valideras för att kunna ge nyförlösta bättre stöd och uppföljning.

Women with breast cancer whose eggs or ovarian tissue were frozen had more children after their diagnosis than women who did not undergo fertility preservation using those methods before start of cancer treatment. That is according to a study by researchers at Karolinska Institutet in Sweden that is published in the journal JAMA Oncology. According to the researchers, the result highlights the importance of reproductive counseling and fertility preservation for women who are diagnosed with cancer at a young age.

In a new study published in the esteemed journal JAMA researchers at Karolinska Institutet and Karolinska University Hospital have examined the association between a positive SARS-CoV-2 test during pregnancy and complications in mothers and their newborn babies. Almost two out of three pregnant women who tested positive for SARS-CoV-2 were asymptomatic and the researchers found no higher prevalence of complications during delivery or of ill-health in the neonates. However, preeclampsia was more common in infected women.

[PRESS RELEASE 2019-04-23] Pregnant women with type 1 diabetes are at increased risk of delivering their baby prematurely. The risk increases as blood sugar levels rise, however women who maintain the recommended levels also risk giving birth prematurely. These are the findings from researchers at Karolinska Institutet and the Sahlgrenska Academy in Sweden, published in Annals of Internal Medicine.

[PRESS RELEASE 2018-09-26] Obese mothers who lose weight through bariatric surgery can have safer deliveries. The positive effects are many, including fewer caesarean sections, infections, tears and haemorrhages, and fewer cases of post-term delivery or uterine inertia. This according to an observational study by researchers at Karolinska Institutet in Sweden published in PLOS Medicine.

[PRESS RELEASE 2017-10-04] Women with asthma suffer more often from preeclampsia (PE) and run a higher risk of giving birth to underweight babies. These and other complications during pregnancy and delivery can not be explained by hereditary or environmental factors, according to a study from Karolinska Institutet published in The Journal of Allergy and Clinical Immunology: In Practice.

First-time mothers in risk zone even before 35New research from Karolinska Institutet shows that the risk of giving birth to your first child in advanced years increase as early as in the 30-34 age group. Previously, first-time mothers were categorised as being in advanced years from the age 35. The results, which are based on the Swedish and Norwegian medical birth registers, have been presented in the scientific journal Obstetrics and Gynecology.

Ny forskning från Karolinska Institutet visar att riskerna med att föda sitt första barn senare i livet ökar redan för mammor i åldergruppen 30-34 år. Tidigare har kvinnor räknats som äldre förstföderskor från 35 år och uppåt. Resultaten som bygger på registerdata från norska och svenska förstföderskor presenteras i den vetenskapliga tidskriften Obstetrics and Gynecology.

Babies born of women who have undergone bariatric (weight-loss) surgery are more likely to be premature and to be small for gestational age, according to a large registry study carried out at Karolinska Institutet in Sweden and published online in the BMJ. The researchers believe that these pregnancies should be considered risk pregnancies and that prenatal care should monitor them extra carefully.

The risk of preterm delivery increases with maternal overweight and obesity, according to a new Swedish study published in Journal of the American Medical Association (JAMA). Women with the highest Body Mass Index (BMI) also had the highest statistical risk of giving preterm birth - and especially extremely preterm birth.