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Fallot’s Tetralogy

Congenital heart defect with four anatomical deviations

arteria femoralis

Thigh artery, used for inserting a left heart catheter (qv cardiac catheter examination)

Fetal echocardiography

Ultrasound examination during pregnancy to diagnose for example, suspected heart defect

FISH analysis

Fluorescence in-situ hybridisation


Relating to the unborn child


Unborn child from approximately the 9th week of pregnancy (according to the development of the organs)

Fontan operation

Operation to separate deoxygenated from oxygenated blood in heart defects where just just one main chamber is present. A connection is created from the right atrium or main veins directly to the pulmonary artery 

Foramen oval

Opening in the atrial septum that is present before birth, and usually closes after birth

Functional heart murmur

Accidental cardiac murmur


A loop diuretic that is used in the treatment of congestive heart failure and oedema. Trade name: Lasix

Author(s): Kinderherzstiftung, Prof. Dr. Elisabeth Sticker, Hermine Nock
Last updated: 2009-04-28