Category: P

  • Pregnancy-related death

    The death of a woman occurring within 6 weeks after pregnancy, conception, or termination of pregnancy.  

  • Postdate pregnancy

    Pregnancy that extends beyond 42 wk of gestation. An average of 10% of normal pregnancies are so classified.  

  • Pre-embryonic period

    In human gestation the stage of prenatal development beginning with implantation of the fertilized egg and ending at day 4.  

  • Pre-embryo

    The morula and blastocyst stages produced by the division of the zygote until the formation of the embryo proper at the appearance of the primitive streak about 14 days after fertilization.  

  • Predisposing

    Indicating a tendency to, or susceptibility to, disease.  

  • Prediction rules

    Identifying and giving weight to the factors important in formulating a diagnosis, in order to establish the probability that a disease is present.  

  • Predicrotic

    Preceding the dicrotic wave of the sphygmographic tracing.  

  • Prediabetes

    Early evidence either of autoimmune disease or impaired carbohydrate metabolism in patients who later develop overt diabetes mellitus. The condition includes impaired fasting glucose and impaired glucose tolerance. In the U.S. in 2007 more than 50 million people were affected by prediabetes.  

  • Precordial thump

    A sharp blow delivered to the precordial area of the chest in an attempt to terminate a lethal cardiac rhythm, such as ventricular fibrillation or ventricular tachycardia. A forceful punch delivered to a patient’s sternum in an attempt to terminate a lethal cardiac rhythm, such as ventricular fibrillation or ventricular tachycardia. A toxic plant, Tripterygium…

  • Precondition

    To protect tissues from future injury with anesthetics, drugs, physical exercises, or other therapies.