n
(medicine) Abbreviation of atrial fibrillation; also a-fib. [A cardiac arrhythmia (abnormal heart rhythm) that involves the two upper chambers (atria) of the heart.]
n
Alternative letter-case form of a-h conduction time [(medicine, cardiology) The time between the start of the first high frequency component of the atrial electrocardiogram to the first high frequency component of the His bundle electrocardiogram, normally 92ms ± 38 ms.]
n
(medicine) anodal closure
n
(medicine) A heart condition where the electrical stimulus travels via an abnormal pathway.
n
Initialism of atrial fibrillation. [A cardiac arrhythmia (abnormal heart rhythm) that involves the two upper chambers (atria) of the heart.]
n
A disease entity involving such beats, such as atrial fibrillation, ventricular tachycardia, AV nodal reentrant tachycardia, or others.
n
A cardiac arrhythmia (abnormal heart rhythm) that involves the two upper chambers (atria) of the heart.
n
(pathology) The alternation of one normal heartbeat and one premature heartbeat.
n
Alternating episodes of bradycardia and tachycardia.
n
(medicine, cardiology) Specialized heart muscle cells that transmit electrical impulses from the AV node in the heart to the muscle cells of the heart wall, which contract in response producing the heart beat.
n
(physiology) The volume of blood ejected from the left ventricle of the heart per unit time, typically per minute.
n
(physiology) cardiac impedance
n
Synonym of cardiotherapy
n
Initialism of catecholaminergic polymorphic ventricular tachycardia. [an autosomal dominant inherited heart disorder caused by a mutation in voltage gated ion channels and resulting in arrhythmias. CPVT may cause exercise-induced ventricular arrhythmias and/or syncope occurring during physical activity or acute emotion, but demonstrates no structural problems of the heart. Ventricular tachycardia may self-terminate or degenerate into ventricular fibrillation, causing sudden death without immediate cardiopulmonary resuscitation. The majority of events occur during childhood and more than 60% of affected individuals will have a first episode of syncope or cardiac arrest by age 20.]
v
(cardiology, transitive) To stop the fibrillation of the heart in order to restore normal contractions, especially by the use of an electric shock.
adj
(physiology) Affecting the conductivity of cardiac muscle, used of the influence of cardiac nerves.
n
The rate of electrical impulses in the heart
n
(cardiology) The proportion of blood ejected out of the left ventricle with each heartbeat.
n
(cardiology) A heart rhythm that is initiated at places other than the sinus node.
n
(medicine) A premature contraction of the heart, producing an interruption or irregularity in heartbeat rhythm, associated with heart disease or the use of some pharmaceuticals.
n
The rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart.
n
The number of heart beats per unit of time, usually expressed as beats per minute.
n
Alternative form of heart rate [The number of heart beats per unit of time, usually expressed as beats per minute.]
adj
(medicine, of T waves on ECGs) Tall-amplitude and asymmetrically peaked, often as an early finding in ST-elevation myocardial infarction.
n
(medicine) a heart disease in which there is an abnormally long delay between the electrical excitation (or depolarization) and relaxation (repolarization) of the ventricles of the heart.
n
The reentry of current into a largish portion of the electrical conduction system of the heart (as opposed to one small spot therein), as in reentrant tachycardias such as AVRT and AVNRT.
n
(cardiology) A broad and bifid P wave on an electrocardiogram, most commonly observed in lead II, usually caused by enlargement of the left atrium.
n
(cardiology) A high, narrow and peaked P wave on an electrocardiogram, most commonly observed in leads II and III, usually caused by enlargement of the right atrium.
n
A kind of arrhythmia caused by the presence and function of a secondary pacemaker in the heart, which works in parallel with the S-A node.
n
The situation in which the heart rate becomes indistinguishable from that of an implanted pacemaker
n
(medicine) A series of graphical deflections on a typical electrocardiogram that represents the electrical changes generated by the depolarization of the heart ventricles.
n
(cardiology) Acronym of regular rate and rhythm, used to describe the heartbeat of patient.
n
(medicine) any cardiac rhythm in which depolarization of the myocardium begins at the sinus node, characterised by the presence of correctly oriented P waves in an electrocardiogram
n
(medicine) A condition in which the ST segment of an echocardiogram reading is raised above the baseline.
n
(medicine, colloquial) Tachycardia.
n
(medicine, colloquial) Tachycardia.
n
(cardiology) pathological tachycardia
n
A rapid resting heart rate, especially one above 100 beats per minute.
adj
Of, pertaining to or afflicted with tachycardia.
adj
Relating to, or exhibiting tachycardia
n
(cardiology) Initialism of torsades de pointes. [(cardiology) A polymorphic ventricular tachycardia, predisposing to sudden cardiac death and more likely to occur during prolongations of the QT interval.]
n
(countable, informal, medicine) A patient with tetralogy of Fallot.
n
(medicine) An acute episode of hypoxia in an individual with tetralogy of Fallot.
n
A type of electrical activity in the brain; a brain wave with a frequency of 4-8 hertz.
n
(cardiology) An unusual morphological feature on an electrocardiogram indicative of acute myocardial infarction, characterized by a massive ST elevation.
n
(pathology) torsade de pointes
n
Alternative spelling of torsades de pointes [(cardiology) A polymorphic ventricular tachycardia, predisposing to sudden cardiac death and more likely to occur during prolongations of the QT interval.]
n
Alternative spelling of torsades de pointes [(cardiology) A polymorphic ventricular tachycardia, predisposing to sudden cardiac death and more likely to occur during prolongations of the QT interval.]
n
Alternative spelling of torsades de pointes [(cardiology) A polymorphic ventricular tachycardia, predisposing to sudden cardiac death and more likely to occur during prolongations of the QT interval.]
n
(biology) The condition of the arterial pulse in which there is a triple beat, so that the pulse curve obtained in a sphygmographic tracing shows two secondary crests in addition to the primary one.
n
A kind of cardiac arrhythmia where premature ventricular contractions occur at intervals of two normal beats to one contraction.
n
(medicine) Abbreviation of ventricular fibrillation; also v-fib. [(cardiology) An abnormal heart rhythm in which the ventricles of the heart quiver instead of pumping normally.]
n
(medicine) Ventricular tachycardia.
n
(cardiology) An abnormal heart rhythm in which the ventricles of the heart quiver instead of pumping normally.
n
A heart attack involving a heightened heart rate in a ventricle of the heart.
n
(cardiology) Initialism of ventricular fibrillation. [(cardiology) An abnormal heart rhythm in which the ventricles of the heart quiver instead of pumping normally.]
n
(medicine) Abbreviation of ventricular fibrillation. [(cardiology) An abnormal heart rhythm in which the ventricles of the heart quiver instead of pumping normally.]
n
A preexcitation syndrome caused by the presence of an abnormal accessory electrical conduction pathway (the bundle of Kent) between the atria and the ventricles.
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