An Echocardiography showing an Acute Pulmonary Embolism

Amniocentesis,before the actual procedure, a local anesthetic is sometimes given to relieve the pain when inserting the needle used to withdraw the fluid. A needle is usually inserted through the mother's abdominal wall or at the end of the vagina, and through the wall of the uterus into the amniotic sac. With assistance from ultrasound, a physician aims towards an area of the sac that is away from the fetus and extracts a small amount of amniotic fluid for testing. The puncture heals, and the amniotic sac replenishes the liquid over a day or so. After the amniotic fluid is extracted, the fetal cells are separated from it using a centrifuge, and the fetal chromosomes are examined for abnormalities. Various genetic testing may be performed, but the three most common abnormalities tested for are Down's syndrome, Trisomy 18 and spina bifida. Amniocentesis can be performed as soon as sufficient amniotic fluid surrounds the fetus to allow a sample to be recovered relatively safely, usually no earlier than the 14th week of pregnancy. Often, genetic counseling is offered in conjunction with amniocentesis.

Wound healing, or wound repair, is the body's natural process of regenerating dermal and epidermal tissue. When an individual is wounded, a set of complex biochemical events takes place in a closely orchestrated cascade to repair the damage. These events overlap in time and may be artificially categorized into separate steps: the inflammatory, proliferative, and remodeling phases (Some authors consider healing to take place in four or more stages, by splitting different parts of inflammation or proliferation into separate steps.). In the inflammatory phase, bacteria and debris are phagocytized and removed, and factors are released that cause the migration and division of cells involved in the proliferative phase.

Urinary System Structure and Function

Over 60 million Americans suffer from chronic heartburn. Get the basics on acid reflux

Structure of the Cannula and Cannulation

Treatment of a Penetrating Chest Trauma

This video illustrates the steps of wound packing

The video will describe anatomy of thorax as seen on a chest lateral view.

En este video, Ana Rivera, Asesor de Salud Publica para los CDC, describe la influenza o gripe porcina: sus signos y síntomas, cómo se transmite, los medicamentos para su tratamiento, las medidas que las personas pueden tomar para protegerse de esta enfermedad y lo que deben hacer las personas si se enferman

This podcast discusses the use of antiviral drugs for treating and preventing the H1N1 flu virus.

This podcast, intended for the general public, demonstrates how to put on and take off disposable respirators that are to be used in areas affected by the influenza outbreak.

Swine Flu Avoid

In this video, Dr. Joe Bresee, with CDC's Influenza Division, describes the symptoms of H1N1 (swine flu) and warning signs to look for that indicate the need for urgent medical attention.

This podcast discusses the actions and goals of the Centers for Disease Control and Prevention, related to the current outbreak of H1N1 flu (swine flu).

In this video, Dr. Joe Bresee, with the CDC Influenza Division, describes swine flu - its signs and symptoms, how it's transmitted, medicines to treat it, steps people can take to protect themselves from it, and what people should do if they become ill.

Clean hands can help prevent the spread of infectious diseases, such as flu. This podcast explains the proper way to wash your hands.

a very funny video of ultrasound

Intubation: How to perform endotracheal intubation

Intercostal Chest Tube Insertion