Healthwise

Our Health Library information does not replace the advice of a doctor. Please be advised that this information is made available to assist our patients to learn more about their health. Our providers may not see and/or treat all topics found herein.

Trisomy 18

Trisomy 18 is a genetic condition related to the presence of an extra chromosome 18 caused by a problem that occurs when cells divide in the egg, sperm, or fertilized egg. The extra chromosome causes the fetus to develop abnormally with a number of physical and mental problems.

Trisomy 18 is also called Edward's syndrome. It is the second most common trisomy condition. (Down syndrome is the most common.) A fetus with trisomy 18 has three copies of chromosome 18 in each cell.

Trisomy 18 can be identified during pregnancy. Doctors can do prenatal tests and fetal ultrasounds to screen for problems, and they can do chromosome tests to diagnose trisomy 18.

Many fetuses with trisomy 18 do not survive to birth, but some are born and live a couple of months to a couple of years. Babies born with trisomy 18 can have heart and kidney problems, a small head with low-set ears, a chest with an unusual shape, and crossed legs. They also have severe intellectual disability.

Due to the threat of the COVID-19 (Coronavirus), we are taking precautionary measures to protect our staff and patients. We are implementing a temporary NO VISITOR policy at this time. Only patients or patients and their guardians will be allowed into the office. Please note, this is not to inconvenience anyone! The virus is a very real threat and it is essential that we stay healthy in order to provide needed care for our patients. If you are sick, we ask that you CALL the office to speak with a nurse before you come in. The nurse will provide specific instructions for you. Please DO NOT enter the office if you are sick (upper respiratory symptoms, fever, cough, or flu like symptoms). We are closely monitoring the situation and will update you as circumstances change. Thank you for your understanding!!