Skip to Content
Know what to ask with our GIST Doctor Discussion Guide

Hyperemesis Gravidarum


Hyperemesis gravidarum is a severe form of nausea and vomiting that happens during pregnancy. Hyperemesis is more severe than morning sickness. It may cause you to have nausea or vomiting all day for many days. It may also keep you from getting enough food and liquid.


Informed consent:

This is a legal document that explains the tests, treatments, or procedures that you may need. Informed consent means you understand what will be done and can make decisions about what you want. You give your permission when you sign the consent form. You can have someone sign this form for you if you are not able to sign it. You have the right to understand your medical care in words you know. Before you sign the consent form, understand the risks and benefits of what will be done. Make sure all your questions are answered.


An IV is a small tube placed in your vein that is used to give you medicine or liquids.

Medicines and supplements:

  • Antihistamines help decrease nausea and vomiting.
  • Antiemetic medicine calms your stomach and helps control vomiting.
  • Vitamin B6 helps decrease nausea and vomiting.
  • Sedatives help you stay calm and relaxed.
  • Vitamin and mineral supplements increase the level of vitamins and minerals in your body. Vitamins and minerals may be given in your IV, as a shot, or by mouth.


  • Blood tests may be done to check for dehydration, or to get information about your overall health.
  • A urine sample may be needed. For this test you need to urinate into a small container. You will be given instructions on how to clean your genital area before you urinate. Do not touch the inside of the cup. Follow instructions on where to place the cup of urine when you are done.
  • External fetal heart monitoring is used to monitor your baby's heartbeat, and the contractions of your uterus. A small metal disc (monitor) with gel on it is placed on your abdomen. A belt will be fastened around your waist to hold the monitor in place. The monitor may need to be moved as your baby moves inside you. It may also be put on and taken off, or left in place.
  • Telemetry is continuous monitoring of your heart rhythm. Sticky pads placed on your skin connect to an EKG machine that records your heart rhythm.
  • Intake and output tracking is done to check the amount of liquid you are getting and the amount you are urinating.
  • An abdominal ultrasound uses sound waves to show pictures of your abdomen on a monitor.


  • NPO means that you will not be given anything to eat or drink by mouth. When your caregiver says it is okay, you may start eating foods slowly. You will be given small, bland meals to see if you can handle them.
  • TPN stands for total parenteral nutrition. It is also called hyperalimentation. It provides your body with nutrition such as protein, sugar, vitamins, minerals, and sometimes fat (lipids). TPN is used when you have problems with eating or digesting food. TPN is usually put into your body through a large IV catheter, such as a central line. You may need TPN for several days or longer.


Hyperemesis may cause you to lose too much weight. Vomiting caused by hyperemesis may damage or tear the tissue in your esophagus. It may also cause you to become dehydrated. If this happens, you may need to go to the hospital to get fluids through an IV. Severe hyperemesis may cause you to have a baby with a low birth weight. Without treatment, hyperemesis can lead to malnutrition and damage to organs such as your kidneys and liver. Hyperemesis can be life-threatening.


You have the right to help plan your care. Learn about your health condition and how it may be treated. Discuss treatment options with your caregivers to decide what care you want to receive. You always have the right to refuse treatment.

© 2015 Truven Health Analytics Inc. Information is for End User's use only and may not be sold, redistributed or otherwise used for commercial purposes. All illustrations and images included in CareNotes® are the copyrighted property of A.D.A.M., Inc. or Truven Health Analytics.

The above information is an educational aid only. It is not intended as medical advice for individual conditions or treatments. Talk to your doctor, nurse or pharmacist before following any medical regimen to see if it is safe and effective for you.