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(Severe Morning Sickness; Persistent Vomiting of Pregnancy; HG)
- Vitamin B deficiency
- Human chorionic gonadotropin (hCG)—hyperemesis most severe during period of highest hCG levels
- Hyperthyroidism —may be a result of hCG levels
- High levels of estrogen
- A multiple pregnancy
- Brain nausea-control-center sensitivity to pregnancy changes
|The Brain May Be Cause of Nausea|
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- History of HG in previous pregnancies
- Molar pregnancy—an abnormal mass made up of placental tissue which may or may not contain some fetal tissue
- Mother or sister with HG
- A multiple pregnancy
- Young maternal age
- No previous completed pregnancies
- First-time pregnancy
- Severe and persistent vomiting, beginning 4 to 6 weeks after conception, peaking 9-13 weeks, and usually improving and ending 14-20 weeks
- Weight loss of greater than 5% of original, pre-pregnancy body weight
- Decrease in urine
- Rapid heartbeat
- Lightheadedness and fainting
- Blood tests
- Urine tests
- Weight measurement—to determine if you have lost weight
- Overall condition—ability to perform daily activities; psychological state of mind
IV Hydration and Anti-nausea Medications
Nutrition by Vein
Termination of Pregnancy
- Avoiding smells, foods, or other things that stimulate nausea
- Eating frequent small meals
- Not allowing yourself to get too hungry or too full
The American Congress of Obstetricians and Gynecologists http://www.acog.org
Hyperemesis Education and Research Foundation http://www.helpher.org
The Canadian Women's Health Network http://www.cwhn.ca
The Society of Obstetricians and Gynaecologists of Canada (SOGC) http://www.sogc.org
Acupuncture. EBSCO Natural and Alternative Treatments website. EBSCO Health Library website. Available at: http://www.ebscohost.com/healthLibrary. Updated May 29, 2013. Accessed August 6, 2013.
American College of Obstetrics and Gynecology. ACOG (American College of Obstetrics and Gynecology) Practice Bulletin: nausea and vomiting of pregnancy. Obstet Gynecol. 2004;103(4):803-8014. Reaffirmed 2011.
Morning sickness. American Congress of Obstetricians and Gynecologists website. Available at: http://www.acog.org/~/media/For%20Patients/faq126.pdf?dmc=1&ts=20130806T1444487894. Accessed August 6, 2013.
Nausea and vomiting in pregnancy. EBSCO DynaMed website. Available at: http://www.ebscohost.com/dynamed.ebscohost.com/about/about-us. Updated Updated April 10, 2013. Accessed August 6, 2013.
Quinlan JD, Hill DA. Nausea and vomiting of pregnancy. Am Fam Physician. 2003;68:121-128.
Understanding hyperemesis. Hyperemesis Education and Research Foundation website. Available at: http://www.helpher.org/hyperemesis-gravidarum. Updated April 18, 2013. Accessed August 6, 2013.
- Reviewer: Andrea Chisholm; Brian Randall, MD
- Review Date: 08/2013
- Update Date: 05/11/2013