Medical Terms

ALCAPA

Anomalous origin of the left coronary artery arising from the pulmonary artery (ALCAPA) is a rare but serious congenital anomaly. ALCAPA anomaly may result from (1) abnormal septation of the conotruncus into the aorta and pulmonary artery, or from (2) persistence of the pulmonary buds together with involution of the aortic buds that will eventually form the coronary arteries. In the current era, the prognosis for patients with ALCAPA is dramatically improved through early diagnosis utilizing echocardiography with color flow mapping and through improvements in surgical techniques, including myocardial preservation.

See http://www.emedicine.com/ped/topic2484.htm.

Angiocardiogram

An X-ray of the heart assisted by a liquid introduced through a catheter.dramatically improved through early diagnosis utilizing echocardiography with colour flow mapping and through improvements in surgical techniques, including myocardial preservation. See http://www.emedicine.com/ped/topic2484.htm.

Anticoagulant

A drug whose purpose is to reduce blood clotting.

Aorta

Main artery of the heart which carries blood to the body.

Aortic valve

The valve between the left ventricle (pumping chamber) and the aorta.

Arrhythmia

Disturbance of normal rhythm of the heart.

Artery

Vessel which carries oxygenated blood from the heart to all parts of the body.

ASD

Atrial Septal Defect – a hole in the septum (wall) between the two atria (collecting chambers) allowing blood to flow between the two sides of the heart.

Atresia

Connection that is either blocked or missing altogether.

Atrium

An upper collecting chamber in the heart which receives incoming blood.

AVSD

Atrial Ventricular Septal Defect – holes in the septum between the atria and between the ventricles with often a common valve between all four chambers. The most common heart defect in babies with Down’s Syndrome.

Banding

Narrowing of the pulmonary artery with a band to reduce blood flow to the lungs.

Blue Baby

A baby who has too little oxygenated blood circulating and therefore has a blue tinge to certain parts of the skin (see cyanosis).

Bradycardia

Abormally slow heart rate.

Cardiac

Relating to the heart.

Cardiac Liaison Sister

A senior nurse in cardiac units to assist families with queries or problems.

Cardiac Surgeon

A surgeon who specialises in the heart.

Cardiologist

A physician specialising in the heart.

Cardiopulmonary Bypass

A machine which takes over the heart’s functions while it is stopped during surgery.

Catheter

A narrow tube inserted into a vein or artery and fed to the heart, where it is used to assist in finer diagnosis or repair.

Coarctation

A narrowing in a blood vessel.

Congenital

Existing at birth.

Congestion

An excess of fluid in part of the body, i.e. the lungs.

CPAP

Constant Positive Airway Pressure – this is a way of keeping small airways open, often used before a patient is taken off complete ventilation.

Cyanosis

Blueness of the skin caused by insufficient oxygen in the blood.

Digoxin

A drug which increases the contraction of the heart muscle.

Diuretics

Drugs which assist the kidneys to produce and excrete more urine

Doppler

A test using sound waves to measure the speed and direction of blood flow in the heart.

Drain

A tube to remove fluid from the body.

Duct

A tube in the body which conducts fluid.

Echocardiogram

A technique using high frequency sound waves to produce a picture on a screen of the heart and surrounding blood vessels.

Electrocardiogram

A technique which records the electric currents produced by the heart.

Endocarditis

An infection of the heart lining or the heart valves.

Fallot’s

see Tetralogy of Fallot.

Heart Failure

A technique using high frequency sound waves to produce a picture on a screen of the heart and surrounding blood vessels.

Heart Lung Machine

A technique which records the electric currents produced by the heart.

Heart Murmur

The sound made by blood flowing through the heart.

ICU (or ITU)

Intensive Care Unit – provides a high level of specialist care immediately after surgery.

Mitral Valve

Valve between the left atrium and left ventricle.

Murmur

The noise produced by blood flow within the heart, which can indicate a heart defect.

Pacemaker

A device which controls the rhythm of the heart if it becomes unsettled.

Pacing Wires

A senior nurse in cardiac units to assist families with queries or problems.

Paediatrics (or pediatrics)

The branch of medicine dealing with the diseases of children.

PDA

Persistent Ductus Arteriosus – a congenital condition where the duct between the aorta and the pulmonary artery sides of the heart fails to close after birth, as it should do, and allows blood to flow between the two sides of the heart.

Pericardium

The sac or bag surrounding the heart.

Polycythaemia

A condition where there are an increased number of red cells within the blood.

Prognosis

The estimated outcome of the particular problem a patient has.

Pulmonary

Relating to the lungs.

Pulmonary Artery

The large artery which conveys deoxygenated blood from the heart to the lungs.

Pulmonary Hypertension

Elevated pressure of blood flowing into the lungs, caused by the left to right shunting though a septal defect.

Pulmonary Valve

The valve between the right ventricle and the pulmonary artery.

Oedema

A build up of excess fluid accumulating in body tissue.

Open Heart Surgery

Operations performed on the inside of the opened heart.

SADS

Sudden Adult/Arrhythmia Death Syndrome

Septum

The tissue wall in the heart which divides the chambers on the left side from the chambers on the right side and, thus, separates the oxygenated blood from the deoxygenated blood, with their different blood perssures.

Shunt

A natural or inserted passageway between the two sides of the heart.

Stenosis

A narrowing of a vessel.

Sternum

The breastbone.

Tachycardia

 An abnormally rapid heart rate.

Tetralogy of Fallot

A congenital malformation of the heart involving four distinct defects.

Tricuspid Valve

Valve, consisting of three cusps, or triangular segments, between the right atrium and the right ventricle.

Valve

A structure which opens and closes and when open allows blood flow in one direction and when closed prevents back flow or leakage.

Vascular

Pertaining to blood vessels.

Vasodilators

Drugs which increase the size of the blood vessels and thus reduce blood pressure.

Vein

A vessel carrying blood back to the heart.

Ventricle

The lower chambers of the heart which act as the pump for the blood’s circulation.

VSD

Ventricular Septal Defects – hole in the septum between the two ventricles (pumping chambers) which allows blood to flow between the two sides of the heart.

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