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Trusted answers from The Hospital for Sick Children September 02, 2010
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Glossary

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A

AAN
  • Anticorps antinucléaire. Groupe de grosses protéines produites par le système immunitaire et qui s’attaque à l’ADN même du corps.
Abdomen
  • The belly, the lower part of the body below the chest.
Abdominal breathing
  • A way to help you relax by breathing slowly and deeply or “belly breathing.” Helps get oxygen to the lower parts of your lungs and throughout your body.
Abdominal distension
  • An abnormal enlargement of the abdomen or belly.
Abdominal wall
  • The wall or lining of the abdomen, which is the area of the body between the chest and the pelvis.
Ablation
  • The removal or correction of a body part or tissue using energy in the form of heat or freezing.
ABO-compatible transplant
  • A heart transplant, typically done in young children, in which the donor's blood type does not match the recipient's blood type.
Abortion
  • When the fetus is expelled from the uterus before 20 weeks of pregnancy or fetal weight of less than 500 g.
Abscess
  • A build-up of pus covered by inflamed tissue.
Absence seizure
  • A generalized seizure involving a brief loss of consciousness and staring. It may also involve mild twitching, loss of muscle tone, or other symptoms. Formerly known as petit mal. Pronounced "ab-SAHNs."
Acanthosis nigricans
  • A skin disease marked by wart-like patches. It can be benign or malignant.
Acetaminophen
  • A common mild pain reliever and fever reducer. For example, Tylenol®.
Acetaminophen
  • A common mild pain reliever and fever reducer. For example, Tylenol®.
Acétaminophène
  • Analgésique léger commun qui réduit aussi la fièvre, par exemple, le Tylenol.
Acetylsalicylic acid
  • A mild pain reliever. Also called Aspirin or ASA. Acetylsalicylic acid should not be given to children under the age of 16.
ACHDer
  • Adult with congenital heart disease.
Acidosis
  • The build-up of acid products in the blood usually due to a severe lack of oxygen or failure of circulation.
Acquired
  • (1) Obtained. (2) Resulting from outside factors, not inherited or present at birth.
Acquired immune deficiency syndrome
  • An ultimately fatal immune disease marked by the inability of the immune system to fight infection. Abbreviated AIDS.
Active ingredient
  • The part of a medication which has an actual effect on your body.
Acupuncture
  • A complementary therapy involving the insertion of tiny needles under the skin to relieve pain and tension.
Acute
  • Occurring suddenly and resolving quickly.
Acute pain
  • Pain that comes on suddenly and disappears quickly.
Acyanotic
  • Not showing evidence of cyanosis.
Acyclovir
  • A medication used against the varicella and herpes simplex viruses.
Adalimumab
  • Also known as Humira®. A type of arthritis medication called a “biologic agent.” Works by blocking chemicals called “cytokines” which promote inflammation. It is usually given every two weeks by injection under the skin.
Adalimumab
  • Médicament également connu sous le nom d’Humira. Type de médicament pour l’arthrite appelé « agent biologique ». Le médicament agit en bloquant des éléments chimiques, les « cytokines », qui causent l’inflammation. En général, on l’administre aux deux semaines par injection sous-cutanée.
Adam's test
  • A scoliosis test where the person is asked to bend forward as if to touch her toes. This test can show if the person has a rib prominence, which is when the ribs are more pronounced on one side of the spine.
Addicted
  • Having a chronic relapsing condition characterized by compulsive drug-seeking and abuse.
Addiction
  • A chronic relapsing condition characterized by compulsive drug-seeking and abuse. Prolonged use of addictive substance induces changes in the brain that lead to tolerance, physical dependence and uncontrollable craving.
Adjuvant therapy
  • A treatment that helps to prevent, improve, or cure a disease, together with another treatment.
Adolescent idiopathic scoliosis
  • A condition that occurs in some teens where there is a fixed, sideways curvature of the spine. When viewed on X-ray, the spine will have an S- or C-shaped curve. Abbreviated AIS.
Adrenal glands
  • Two glands located near the kidney, in the middle of the body. They produce a number of hormones, including glucocorticoids, mineralocorticoids, androgenic hormones, epinephrine, and norepinephrine.
Adrenaline
  • A hormone released during periods of fear or arousal. It can increase breathing, heart, and metabolic rates as needed by the body. Also called epinephrine.
Adrenaline
  • A natural substance that’s released into your body when you are stressed out, afraid, excited, or in pain. It can increase breathing and heart rate and make it difficult to relax. Also called epinephrine.
Adrénaline
  • Substance naturelle libérée dans ton corps lorsque tu es stressé(e), effrayé(e), excité(e) ou que tu as mal. Cela peut augmenter ton rythme respiratoire et ta fréquence cardiaque et te causer de la difficulté à te détendre. Aussi appelée épinéphrine.
Adrenocorticotrophic hormone
  • A hormone produced by the pituitary gland in the brain. It travels to the adrenal gland, near the kidney, and stimulates it to produce other hormones. Abbreviated ACTH. A form of this hormone is given to treat infantile spasms, a type of epilepsy.
Advanced practice nurse
  • A Registered Nurse (RN) who has extra training and specialized experience.
Agent biologique
  • Aussi appelé « protéines modificatrices de la réponse biologique », « médicament biologique » ou simplement « produit biologique ». Nouvelle catégorie de médicaments qui cible les cytokines, des éléments chimiques du système immunitaire qui causent l’inflammation.
Aggressive
  • Referring to a hostile or destructive person or behaviour.
Agnosia
  • Inability to recognize things from sensory input such as sight, sound, or touch.
AINS
  • Abréviation pour anti inflammatoire non stéroïdien. Médicaments tels que l’aspirine et l’ibuprofène qui sont utilisés pour réduire l’inflammation et ne contiennent aucun corticostéroïde comme ingrédient actif.
Airway
  • The respiratory tract; the passage from the lungs to the outside world.
AIS
  • Adolescent idiopathic scoliosis. A condition that occurs in some teens where there is a fixed, sideways curvature of the spine. When viewed on X-ray, the spine will have an S- or C-shaped curve.
AJI
  • Abréviation d’arthrite juvénile idiopathique. Type d’inflammation articulaire chronique qui survient chez les enfants et les adolescents et dont la cause demeure inconnue. Elle peut causer une enflure, de la sensibilité et de la douleur dans tes articulations, ce qui peut avoir une incidence sur ta croissance et ton développement.
AJI systémique
  • Arthrite juvénile idiopathique systémique. Ce sous-type d’arthrite juvénile idiopathique est associé à de la fièvre. Il peut aussi provoquer des éruptions cutanées, une enflure des ganglions, une hypertrophie du foie ou de la rate et une inflammation du cœur et des poumons.
Albumin
  • A type of plasma fraction. Albumin supports or makes the amount of liquid in blood vessels larger.
Albuminuria
  • The presence of protein in the urine. Albuminuria may be a sign of nephropathy (kidney disease). It is also called microalbuminuria or overt proteinuria.
Allergen
  • Something a person is allergic to; a normally harmless substance that the body believes is harmful. Common allergens include dust, pollen, pets, mould, and certain foods. When a person is exposed to an allergen to which he is sensitive, the allergen sets off an immune response and the person has an allergic reaction. This may include itching, sneezing, a runny nose, watery eyes, or asthma. Different people are sensitive (allergic) to different allergens.
Allergy
  • The body's overly sensitive reaction to a particular substance.
Allograft
  • An organ or tissue transplanted from one individual to another of the same species; e.g. human to human.
Allograft
  • An organ or tissue transplanted from one individual to another of the same species; e.g. human to human. With a bone allograft, this is not a live donation. Instead, people can donate their bones to a bone bank when they die. The donated bone tissue is tested for disease, sterilized and then frozen until it is needed.
Alpha cell
  • A type of cell in the pancreas. Alpha cells make a hormone called glucagon.
Alpha fetoprotein assay
  • A screening test that measures the level of a substance called alpha fetoprotein in the blood during pregnancy. High levels of this protein may indicate that the baby has spina bifida, or it may simply mean the pregnancy is farther along than originally thought. Low levels of this protein may mean the baby has Down syndrome, or that the pregnancy is not as far along as thought. Any abnormal results in this screening test are followed up by a diagnostic test such as amniocentesis.
Alternative medicine
  • Any therapy used instead of standard Western medical treatment.
Alternative therapy
  • A non-Western medicine-based therapy used instead of modern evidence-based medicine.
Alveoli
  • Alveoli are small, thin-walled, air-filled sacs in the lung. Alveoli are the site of gas exchange within the lungs. Oxygen molecules pass through alveoli membranes to be picked up by red blood cells and carried to all parts of the body. Carbon dioxide molecules move in the opposite direction.
Amino acids
  • Basic “building blocks” that form the proteins in your body.
Amino-acides
  • Éléments de fabrication de base qui forment les protéines dans ton corps.
Amniocentesis
  • A medical procedure where a small amount of the amniotic fluid surrounding the fetus is removed and sent for testing. Amniocentesis is usually offered if there is an increased risk for genetically determined conditions such as Down syndrome.
Amniotic fluid
  • The fluid contained in the uterus, or womb, during pregnancy. Amniotic fluid surrounds and protects the fetus. Floating in the amniotic fluid allows the fetus a certain degree of freedom of movement and helps maintain a constant temperature.
Amniotic sac
  • A membrane within the uterus that contains amniotic fluid and the developing fetus.
Ampicillin
  • A penicillin-like, broad spectrum antibiotic usually used to treat infections of the urinary, respiratory, and intestinal tracts.
Amygdala
  • A structure deep in the brain that coordinates physical responses to emotional states. Part of the limbic system.
ANA
  • “Anti-nuclear Antibody.” A group of large proteins produced by the immune system which is directed against the body’s own DNA.
Anaemia
  • A condition where the number of red blood cells in your blood is below what it should be, so your blood can’t carry as much oxygen. This can cause you to look pale, and get winded easily, and feel tired.
Anaesthesiologist
  • A doctor who specializes in giving medicines to control pain and to sedate patients during a procedure. Also called an anaesthetist.
Anaesthetic
  • A substance that causes lack of feeling or awareness. A local anesthetic causes loss of feeling in a part of the body. A general anesthetic puts the person to sleep. Also called "pain killer."
Anaesthetic
  • A medicine that makes you go feel sleepy, or go to sleep during a procedure (general anesthesia) or numbs a particular part of your body (local anesthesia).
Anaesthetic
  • A substance that causes lack of feeling or awareness. A local anesthetic causes loss of feeling in a part of the body. A general anesthetic puts the person to sleep. Also called an analgesic.
Anaesthetic
  • A medicine that makes you go feel sleepy, or go to sleep during a procedure (general anesthesia) or numbs a particular part of your body (local anesthesia).
Anaesthetics
  • A medicine that makes you go feel sleepy, or go to sleep during a procedure (general anesthesia) or numbs a particular part of your body (local anesthesia).
Anaesthetist
  • A medical doctor who is specially trained to give all types of anaesthesia.
Anaesthetist
  • A medical doctor who is specially trained to administer all types of anaesthesia, such as general anaesthesia during surgery, local anaesthesia such as epidurals during childbirth, and morphine drips for pain relief after surgery
Anaesthetist
  • A medical doctor who is specially trained to administer all types of anaesthesia, such as general anaesthesia during surgery, local anaesthesia such as epidurals during childbirth, and morphine drips for pain relief after surgery
Anakinra
  • Also known as Kineret®. A type of arthritis medication called a “biologic agent.” Works by blocking chemicals called “cytokines” which promote inflammation. It is usually given every day by injection under the skin.
Anakinra
  • Aussi connu sous le nom de Kineret. Type de médicament pour l’arthrite appelé « agent biologique ». Le médicament agit en bloquant des éléments chimiques, les « cytokines », qui causent l’inflammation. En général, on l’administre tous les jours par injection sous-cutanée.
Analgesia
  • The inability to feel pain while still conscious. This state is usually created using drugs call analgesics.
Analgesic
  • Something that reduces pain.
Analyse d’urine
  • Test qui permet d’analyser le contenu de l’urine (pipi).
Analyses d’urine
  • Test qui permet d’analyser le contenu de l’urine (pipi).
Androgen
  • A hormone in boys that causes them to develop more muscle and become physically stronger than girls.
Anemia
  • A condition where the number of red blood cells in the blood, or the amount of hemoglobin in the red blood cells, is reduced. This diminishes the blood’s ability to carry oxygen. Symptoms of anemia include pale skin, shortness of breath, and fatigue.
Anemia
  • A condition where the number of red blood cells in your blood is below what it should be, so your blood can’t carry as much oxygen. This can cause you to look pale, and get winded easily, and feel tired.
Anémie
  • Maladie dans laquelle le nombre de globules rouges dans ton sang est inférieur à ce qu’il devrait être, ce qui fait que ton sang transporte moins d’oxygène. Cela peut te donner un teint pâle et entraîner un essoufflement plus rapide et de la fatigue.
Anencephaly
  • A birth defect where certain parts of the brain – the cerebral and cerebellar hemispheres, brainstem, and basal ganglia – are missing, and the bones that would normally surround the brain are absent.
Anesthesia
  • This occurs when part of the body is numbed, or a child is put to sleep without any loss of key body functions. It is done by using one or more drugs that block pain impulses from moving along the nerves to the brain. This prevents the child from feeling pain during a procedure. Local anesthesia is done on a small part of the body and the child is awake. General anesthesia involves the entire body and the child is asleep.
Anesthésiant
  • Médicament qui te rend somnolent(e) ou qui t’endort pendant une procédure (anesthésie générale) ou qui engourdit une partie de ton corps (anesthésie locale).
Anesthésiant local
  • Médicament qui engourdit une partie de ton corps en particulier afin que tu ne te sentes pas inconfortable pendant une procédure telle qu’une injection dans l’articulation.
Anesthésiant topique
  • Médicament appliqué sur ta peau pour l’engourdir avant de la piquer avec une aiguille ou pour effectuer d’autres procédures.
Anesthésiants topiques
  • Médicament appliqué sur ta peau pour l’engourdir avant de la piquer avec une aiguille ou pour effectuer d’autres procédures.
Anesthésie générale
  • État d’inconscience contrôlé, « sommeil » pendant lequel on peut effectuer des procédures telles qu’une injection dans l’articulation.
Anesthesiologist
  • A specialist trained in giving anesthesia.
Anesthésique
  • Médicament qui te rend somnolent(e) ou qui t’endort pendant une procédure (anesthésie générale) ou qui engourdit une partie de ton corps (anesthésie locale).
Anesthésique général
  • Substance qui entraîne une perte de conscience ou qui cause « le sommeil » pendant des procédures ou une chirurgie.
Anesthésiste
  • Médecin qui possède une formation spécialisée dans la pratique de tous les types d’anesthésie.
Aneurysm
  • A widening of the aorta or an artery that leads to increased risk of rupture.
Angiogram
  • A special x-ray or picture of the blood vessels (the arteries and veins) in a part of the body.
Angiotensin converting enzyme (ACE) inhibitors
  • Medications used to protect the kidney once early kidney damage or high blood pressure have been found.
Ankylosing spondylitis
  • A type of arthritis that attacks joints in the spine, especially the joints where the spine and pelvis meet in the lower back (sacroiliac joints).
Anorexia
  • A loss of appetite that lasts for a long time.
Antenatal
  • Before birth. Antenatal treatment refers to treatment of a pregnant woman or an unborn fetus.
Antepartum
  • The period during pregnancy and before the onset of labour.
Anterior
  • Toward the front part of the body.
Anti inflammatoires non stéroïdiens
  • Son abréviation est AINS. Médicaments tels que l’aspirine et l’ibuprofène qui sont utilisés pour réduire l’inflammation et ne contiennent aucun corticostéroïde comme ingrédient actif.
Anti-convulsant medication
  • A type of medicine that helps to prevent seizures.
Anti-emetic medication
  • A drug that is taken to prevent vomiting.
Anti-epileptic drug
  • A medication given to control seizures. Abbreviated AED.
Anti-inflammatoire
  • Substance utilisée pour soulager l’inflammation et réduire l’enflure, la raideur et la douleur. Par exemple, l’ibuprofène (Advil).
Anti-inflammatory
  • A drug that reduces inflammation.
Anti-inflammatory drug
  • A substance used to relieve inflammation, swelling, stiffness, and pain. For example, ibuprofen (Advil®)
Anti-nausea medication
  • A drug that is taken to prevent nausea.
Antibiotic
  • A medication that prevents or cures bacterial infection. An antibiotic interferes with the growth of bacteria.
Antibiotic
  • A medication that cures bacterial infections. An antibiotic interferes with the growth of bacteria.
Antibiotics
  • Medications that cure bacterial infections. An antibiotic interferes with the growth of bacteria.
Antibiotics
  • A medication that prevents or cures bacterial infection. An antibiotic interferes with the growth of bacteria.
Antibiotiques
  • Médicaments qui guérissent les infections bactériennes. L’antibiotique empêche la multiplication des bactéries.
Antibody
  • A large protein produced and used by the immune system to identify and neutralize foreign objects like bacteria and viruses.
Antibody
  • A large protein used by the immune system to identify and neutralize foreign objects like bacteria and viruses.
Anticoagulant
  • A medication that prevent blood clotting.
Anticonvulsant
  • A medication given to control seizures. Also called an anti-epileptic drug.
Anticonvulsants
  • Medication used to treat seizure disorders and sometimes to treat pain.
Anticorps
  • Grosse protéine produite et utilisée par le système immunitaire afin de reconnaître et de neutraliser les corps étrangers tels que les bactéries et les virus.
Anticorps antinucléaire
  • Aussi connu par l’acronyme AAN. Grosse protéine produite par le système immunitaire et qui s’attaque à l’ADN même du corps.
Antidepressant
  • Medication used to treat depression and sometimes to treat pain. There are several classes of these drugs including tricyclic antidepressants (TCAs) and serotonin reuptake inhibitors (SSRIs).
Antidiuretic hormone
  • A hormone produced by the pituitary gland in the brain. It is responsible for controlling blood pressure, making urine more concentrated, and conserving water in the body. It is also called vasopressin. Abbreviated ADH.
Antigènes leucocytes humains
  • Aussi appelés système HLA. Protéines qui contrôlent les réactions du système immunitaire aux cellules étrangères et à ses propres cellules.
Antihistamine
  • Drugs that counter the effect of the histamine released during an allergic reaction by blocking the action of the histamine on the tissue. Side effects include drowsiness.
Antinuclear antibody
  • Also known as ANA. A large protein produced by the immune system which is directed against the body’s own DNA.
Antirhumatismal modificateur de la maladie
  • Aussi connu sous l’abréviation ARMM. Médicament à action lente qui intervient dans le processus d’inflammation et permet de prévenir des lésions à tes articulations.
Antiseptic
  • A liquid used to disinfect a wound or incision.
Anxiety
  • A frequent, persistent, unpleasant mental tension.
Anxiety disorder
  • A pattern of frequent, persistent worry and anxiety during at least a six-month period.