Glossary

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ICD
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See AICD

Immunosuppression
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Suppression of the immune response with drugs, e.g. following transplantation to prevent organ rejection

Implant
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Insertion of material or part of an organ made of natural or synthetic material into the body

Incision
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A cut into body tissue

Infarct
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Tissue necrosis, e.g. in the heart or brain, caused by blocked circulation (arterial obturation: thrombus, emboli)

Informed consent
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Informed and self-determined assent to further diagnosis

Infundibular stenosis
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Narrowing of the pulmonary artery between the right ventricle and the pulmonary valve caused by an increase of muscle tissue

Infundibulum
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Kind of muscular tunnel, the outflow section of the right ventricle to the pulmonary artery

INR value
international normal ratio

Introduced by the WHO in 1983 to redress the lack of comparability of Quick values. Used in the control of anticoagulants (Coumarin). Calculated using a formula.

INR value 1 = no coagulation
INR value 2 = coagulation 2-fold prolonged
INR value 3 = coagulation 3-fold prolonged

Insufficiency
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Inadequate performance or functioning

Interrupted aortic arch
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There is a gap of varying size (different possible types) in the upper part of the aorta, which has no further connection to another vessel or organ. Emergency situation for the newborn child; blood supply to the lower half of the body is via the open ductus arteriosus

Intervention
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Procedure, e.g. using cardiac catheter, interventional cardiac catheterisation

Interventional cardiac catheterisation
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Procedure carried out using a cardiac catheter, e.g. balloon dilation, placement of stents

Intima
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Innermost coat of an organ

Intracardial
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Inside the heart

Intubation
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Insertion of a tube through the mouth and into the trachea for the purpose of respiration, e.g. following the initialisation of anaethesia during an operation

In utero
Intrauterine

Within the uterus

Invasive diagnosis
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Diagnostic test that involves entering the body (eg catheter)

Invasive therapy
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Treatment that involves entering the body (eg catheter)

Iridocoloboma
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Congenital fissure of the iris

Ischemia
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Insufficient blood supply to tissue or organ, local lack of blood supply

ISTA
Aortic isthmic stenosis

Narrowing of the aorta where the aortic arch enters the descending aorta

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