Navigation Links
Extreme nausea and vomiting varies among pregnant women from different countries
Date:4/25/2008

Mothers born in India and Sri Lanka are three times more likely to suffer from extreme nausea and vomiting in pregnancy (hyperemesis gravidarum) than ethnic Norwegians. This finding comes from the Norwegian Institute of Public Healths study of 900, 000 first-time pregnancies registered in the Medical Birth Registry of Norway over a forty year period.

Earlier studies reported that 90 percent of pregnant women experience some degree of nausea and vomiting, whereas 0.5 to 2 percent have hyperemesis gravidarum. Due to dehydration, loss of important electrolytes, malnutrition and weight loss, hyperemesis gravidarum could be life-threatening for mother and baby if left untreated. In the USA it is the commonest cause for hospitalisation during early pregnancy. The cause of hyperemesis gravidarum is unknown.

se Vikanes, specialist in gynaecology and obstetrics at the institutes Division of Epidemiology, wanted to explore whether the mothers country of birth affected the prevalence of hyperemesis gravidarum. Vikanes is primary author of the paper Variations in prevalence of hyperemesis gravidarum by country of birth: A study of 900, 074 pregnancies in Norway, 1967-2005.

Large study on hyperemesis gravidarum

Vikanes and her colleagues collected data from the Medical Birth Registry of Norway, which since 1967 has recorded data on all pregnancies and pregnancy complications. 8, 300 cases of hyperemesis gravidarum were recorded out of 900, 000 pregnancies, giving an overall prevalence of 0.89 percent. Data on the mothers country of birth and education were recorded by Statistics Norway and linked to pregnancy information through the mothers unique personal identification number. Socio-demographic factors such as marital status, country of birth, education, age and number of foetuses in each pregnancy were also studied.

This is one of the largest studies carried out on hyperemesis gravidarum. In contrast to earlier studies we tested the quality of the data and therefore have confidence in our findings says Vikanes.

Mothers born in India and Sri Lanka had the highest prevalence of hyperemesis gravidarum, followed by those born in Africa (excluding North Africa) and Pakistan by 3.2 percent, 3.1 percent and 2.1 percent, respectively. Ethnic Norwegians, North Americans and Western Europeans had the lowest prevalence by 0.9 percent, 0.9 percent and 0.8 percent, respectively. A maternal age between 20-24 years old, being married, carrying a female foetus or more than one foetus were all socio-demographic characteristics associated with a higher prevalence of hyperemesis gravidarum.

Need to study further

The difference in prevalence of hyperemesis gravidarum related to the mothers country of birth cannot be explained by differences in socio-demographic characteristics, says Vikanes. We have to look for other explanations such as genetic factors, a change of diet or a history of infections. This topic needs further research to identify ways to prevent this life-threatening and distressing condition.


'/>"/>

Contact: Media contact
info@fhi.no
Norwegian Institute of Public Health
Source:Eurekalert

Related biology news :

1. Common aquatic animals show extreme resistance to radiation
2. Answering challenges of life in extreme environments research
3. Misconceptions about Alzheimers varies among races, survey suggests
4. Survey finds elevated rates of new asthma among WTC rescue and recovery workers
5. Tree of life for flowering plants reveals relationships among major groups
6. Varying prevalence among ethnic groups of gene mutation that increases risk of breast cancer
7. U of M research finds disordered eating less common among teen girls who regularly eat family meals
8. UT Southwestern scientist honored among best in Texas research
9. Key impact hunters catalyze hunting among male chimpanzees
10. Human Proteinpedia, a portal to share human protein data among the scientific community
11. Hope among patients with ALS may take a variety of forms
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:3/28/2017)... , March 28, 2017 The ... Hardware (Camera, Monitors, Servers, Storage Devices), Software (Video Analytics, ... Region - Global Forecast to 2022", published by MarketsandMarkets, ... 2016 and is projected to reach USD 75.64 Billion ... and 2022. The base year considered for the study ...
(Date:3/24/2017)... 24, 2017 The Controller General of Immigration from ... Abdulla Algeen have received the prestigious international IAIR Award for the ... Continue Reading ... ... Controller Abdulla Algeen (small picture on the right) have received the IAIR ...
(Date:3/23/2017)... The report "Gesture Recognition and Touchless Sensing Market by Technology (Touch-based ... to 2022", published by MarketsandMarkets, the market is expected to be worth USD ... 2022. Continue Reading ... ... ...
Breaking Biology News(10 mins):
(Date:10/11/2017)... and LAGUNA HILLS, Calif. , Oct. ... Cancer Research, London (ICR) and University ... SKY92, SkylineDx,s prognostic tool to risk-stratify patients with multiple myeloma ... MUK nine . The University of Leeds ... partly funded by Myeloma UK, and ICR will perform the ...
(Date:10/10/2017)... ... 2017 , ... San Diego-based team building and cooking events company, Lajollacooks4u, has ... The bold new look is part of a transformation to increase awareness, appeal to ... period. , It will also expand its service offering from its signature gourmet cooking ...
(Date:10/10/2017)... 10, 2017 International research firm Parks Associates announced ... at the TMA 2017 Annual Meeting , October 11 in ... residential home security market and how smart safety and security products impact ... Parks Associates: Smart Home ... "The residential security market has ...
(Date:10/9/2017)... DIEGO , Oct. 9, 2017  BioTech ... biological mechanism by which its ProCell stem cell ... critical limb ischemia.  The Company, demonstrated that treatment ... amount of limbs saved as compared to standard ... the molecule HGF resulted in reduction of therapeutic ...
Breaking Biology Technology: