Prenatal diagnosis
Diagnosis before birth. Methods for prenatal diagnosis include ultrasound of the uterus, placenta, and/or developing fetus; chorionic villus sampling (CVS) to obtain tissue for chromosome or biochemical analysis; and amniocentesis to obtain amniotic fluid for the analysis of chromosomes, enzymes, or DNA. A growing number of birth defects and diseases can be diagnosed prenatally and in some cases treated before birth. Also known as antenatal diagnosis.
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- Prenatal radiation exposure
The exposure of an unborn baby to radiation. Radiation exposure of the fetus can occur when the mother’s abdomen is exposed to radiation from outside her body as, for example, by diagnostic X-rays. A pregnant woman may also be exposed to radiation by swallowing or breathing in radioactive materials. From the mother, radioactive materials may […]
- Prenatal surgery
The surgical treatment of the fetus before birth. Also called antenatal surgery or, most often, fetal surgery. Fetal surgery is done when the fetus is not expected to live long enough to make it through to delivery or to live long after birth unless fetal surgery is performed. For instance, if a fetus has a […]
- Preop
Short for preoperative; before a surgical operation. The opposite of preop is postop.
- Preoperative
Before surgery. As opposed to postoperative, after surgery.
- Preoperative care
Care given before surgery when physical and psychological preparations are made for the operation, according to the individual needs of the patient. The preoperative period runs from the time the patient is admitted to the hospital or surgicenter to the time that the surgery begins.