Glossary

0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Debanding
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The removal of a circlular surgical band from the pulmonary artery (banding)

Decompensation
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Failure to counteract inadequate function or performance

Defibrillation
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Process to restore an extremely rapid heartbeat (tachycardia) to normal e.g. in the context of heart-lung-reanimation

DEGUM
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German Society for Ultrasound in Medicine

Deletion
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Genetic mutation: loss or absence of one or more DNA modules

Dextrocardia
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Congenital location of the heart on the right side of the thorax

Diastole
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Relaxation phase of the heart. The heart muscle slackens and the ventricles fill with blood. The blood is sucked from the atria, via the pulmonary veins into the ventricles. At the end of the diastole the atria actively pump the blood into the ventricles

Diastolic blood pressure
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The lower blood pressure value, e.g. 120/80 mm HG

Digitalis
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Originally a naturally occurring compound (digitalis glycoside digoxin and digitoxin) extracted from the foxglove that increases cardiac activity and influences cardiac rhythm

Digoxin
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Cardiac glycoside (heart medication)

Dilatative cardiomyopathy
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Disease of the heart muscle with abnormal enlargement of the left or both sides of the heart and inadequate heart pumping function

Dilation
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1.    expansion of the cardiac chambers or the aorta
2.    widening of constrictions in blood vessels and valves (balloon dilation)

Diuretics
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Medicines that help reduce oedema and cardiac stress by removing water from the body

DIV
double inlet ventricle

Singular ventricle; distinction between DILV or DIRV, depending on which (left/right) ventricle is affected

Doppler ultrasonography
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An imaging technique that is used to visualise the flow of blood in the heart and blood vessels

DORV
Double outlet right ventricle

Origin of the two main arteries from the right-side

Down’s Syndrome
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Also Trisomy 21; often accompanied by a congenital heart defect (see article on page 20)

Drainage
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Use of a tube to withdraw excess fluid and discharge (e.g. lymph) from wounds, sores or cavities e.g. thorax drainage, to create sufficient space into which the lung can expand after an operation

Ductus arteriosus Botalli
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Natural connection between the aorta and pulmonary artery in the foetus that normally closes within hours, or a few days, after birth

Dyscrania
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Abnormal shape of the cranium

Dysmorphic feature
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A pathological mutation of body structures

Dysplasia
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Abnormal development

Dyspnoe
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Laboured or difficult breathing

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