Mechanism
There is no exact mechanism for Lutembachers syndrome but instead a combination of disorders as the result of Atrial septal defect (ASD) and/or Mitral valve stenosis.It is thought ASD is caused by the failure to close the hole (foramen ovale) between the right and left atrium normally found within the heart during fetal development; the creation of a hole between the atrium may also be acquired. There are two types of ASD: Ostium secundum and ASD Primum. Atrial Septal Defect Primum
The failure of the hole between the right and left atrium to close shortly after birth is the cause behind ASD primum. During fetal development blood will pass from the umbilical cord and flow into the left atrium through a hole between the two atria. Once a baby is born and the lungs begin to fill with air, the blood flow of the heart changes; a tissue flap (septum primum) normally closes the hole (foramen ovale) between the two atria and becomes part of the atrial wall. During ASD primum, after birth the hole is not completely closed allowing blood to flow into the right atria from the left atria.
Additionally, this is a painful method which can cause blistering and/or ulceration of the skin and it is therefore not recommended. It is recommended to use Benadryl or some anti-itch cream (i.e. Cortizone or Calamine lotion). This will help relieve some of the itch. Wearing shoes in areas where these parasites are known to be endemic offers protection from infection. In general, avoiding exposure of skin to contaminated soil or sand offers the best protection. In some areas dogs have been prohibited from beaches in an attempt to control human infection. Additional images
See also
Dermatology
Intestinal parasite
Visceral larva migrans
List of migrating cutaneous conditions

References
External links
DermAtlas -1921851750