Health Library

Posterior Urethral Valves in Children

Posterior urethral valves are a problem with the urethra in a boy. The valves partly block urine flow because not enough urine can get through them to leave the body. This can harm the urethra, bladder, ureters, and kidneys.

Postmaturity in the Newborn

The normal length of pregnancy is 37 to 41 weeks. Postmaturity is a word used to describe babies born after 42 weeks. Very few babies are born at 42 weeks or later. Other terms often used to describe these late births include post-term, postmaturity, prolonged pregnancy, and postdates pregnancy.

Postoperative Care

Detailed information on postoperative management

Postpartum Hemorrhage

Postpartum hemorrhage is more bleeding than normal after the birth of a baby. It is more likely with a cesarean birth. It most often happens after the placenta is delivered, but it can also happen later. Read on to learn more.

Post-Term Pregnancy

A pregnancy that lasts more than 42 weeks is called postterm. A pregnancy that is between 41 and 42 weeks is called late-term. Most women deliver between 37 and 42 weeks of pregnancy.

Posttraumatic Stress Disorder (PTSD) in Children

Posttraumatic stress disorder (PTSD) is a mental health problem. A child with PTSD has constant, scary thoughts and memories of a past event. The child finds the event terrifying, either physically or emotionally.

Potassium-Restricted Diet for Children

Read on for detailed information to help your child limit or avoid high-potassium foods.

Precocious Puberty

Puberty that happens early is called precocious puberty. This means a child's physical signs of sexual maturity develop too soon. Read on to learn more.

Preconception Care

Detailed information on preconception care

Pregnancy and Medical Conditions

Detailed information on pregnancy and medical conditions

Pregnancy and Pre-existing Heart Disease

Pre-existing heart disease is a heart problem that you had before you got pregnant. This often means a heart condition that you were born with (congenital).

Pregnancy Complications

Detailed information on the most common complications during pregnancy