| escape ventricular contraction | An escape beat arising in the ventricle. (05 Mar 2000) |
|---|---|
| fibrillation, ventricular | An abnormal irregular heart rhythm whereby there are very rapid uncoordinated fluttering contractions of the lower chambers (ventricles) of the heart. Venticular fibrillation disrupts the synchrony between the heartbeat and the pulse beat. Ventricular fibrillation is commonly associated with heart attacks or scarring of the heart muscle from previous heart attack. Ventricular fibrillation is life threatening. (12 Dec 1998) |
| left-ventricular assist device | Mechanical pump inserted at some point in the circulation to parallel the activity of the left ventricle and thereby reduce its load. (05 Mar 2000) |
| left ventricular ejection time | The time measured clinically from onset to incisural notch of the carotid or other pulse; properly the time of ejection of blood from the left ventricle beginning with aortic valve opening and ending with aortic valve closure. (05 Mar 2000) |
| left ventricular failure | <cardiology> A disorder where the left side of the heart fails to pump blood effectively. This results in a back flow (and pressure) and congestion of blood into the lungs. The causes of this condition include, valvular heart disease, cardiomyopathy, anaemia, hyperthyroidism, atrial myxoma, drug toxicity and congenital heart disease. Risk factors include diabetes, alcoholism, obesity and smoking. Symptoms include increasing shortness of breath with activity and while lying flat. Other symptoms include cough, palpitations, fatigue, decreased urine production and waking in the middle of the nigh with difficulty breathing. Complications include pulmonary oedema, arrhythmias and pleural effusion. (27 Sep 1997) |
| left ventricular hypertrophy | <radiology> Coarctation, aortic stenosis (12 Dec 1998) |
| left ventricular myomectomy | Resection of myocardial tissue used in cases of idiopathic hypertrophic subaortic stenosis. (05 Mar 2000) |
| left ventricular volume overload | <radiology> VSD, patent ductus arteriosus, mitral incompetence, aortic incompetence (12 Dec 1998) |
| apical branch of inferior lobar branch of right pulmonary artery | <anatomy, artery> Branch (of the inferior lobar branch) of the right pulmonary artery serving the apical segment of the inferior lobe of the right lung. Synonym: ramus apicalis lobi inferioris arteriae pulmonalis dextrae. (05 Mar 2000) |
| atrial function, right | The haemodynamic and electrophysiological action of the right atrium. (12 Dec 1998) |
| auricle of right atrium | The small conical projection from the right atrium of the heart. Synonym: auricula dextra, right auricular appendage. (05 Mar 2000) |
| right | 1. That which is right or correct. Specifically: The straight course; adherence to duty; obedience to lawful authority, divine or human; freedom from guilt, the opposite of moral wrong. A true statement; freedom from error of falsehood; adherence to truth or fact. "Seldom your opinions err; Your eyes are always in the right." (Prior) A just judgment or action; that which is true or proper; justice; uprightness; integrity. "Long love to her has borne the faithful knight, And well deserved, had fortune done him right." (Dryden) 2. That to which one has a just claim. Specifically: That which one has a natural claim to exact. "There are no rights whatever, without corresponding duties." (Coleridge) That which one has a legal or social claim to do or to exact; legal power; authority; as, a sheriff has a right to arrest a criminal. That which justly belongs to one; that which one has a claim to possess or own; the interest or share which anyone has in a piece of property; title; claim; interest; ownership. "Born free, he sought his right." (Dryden) "Hast thou not right to all created things?" (Milton) "Men have no right to what is not reasonable." (Burke) Privilege or immunity granted by authority. 3. The right side; the side opposite to the left. "Led her to the Souldan's right." (Spenser) 4. In some legislative bodies of Europe (as in France), those members collectively who are conservatives or monarchists. See Center. 5. The outward or most finished surface, as of a piece of cloth, a carpet, etc. at all right, at all points; in all respects. Bill of rights, a list of rights; a paper containing a declaration of rights, or the declaration itself. See Bill. By right, By rights, or By good rights, rightly; properly; correctly. "He should himself use it by right." (Chaucer) "I should have been a woman by right." (Shak) Divine right, or Divine right of kings, a name given to the patriarchal theory of government, especially to the doctrine that no misconduct and no dispossession can forfeit the right of a monarch or his heirs to the throne, and to the obedience of the people. To rights. In a direct line; straight. At once; directly. To set to rights, To put to rights, to put in good order; to adjust; to regulate, as what is out of order. Writ of right, a writ which lay to recover lands in fee simple, unjustly withheld from the true owner. Origin: AS. Right. See Right. 1. Straight; direct; not crooked; as, a right line. "Right as any line." 2. Upright; erect from a base; having an upright axis; not oblique; as, right ascension; a right pyramid or cone. 3. Conformed to the constitution of man and the will of God, or to justice and equity; not deviating from the true and just; according with truth and duty; just; true. "That which is conformable to the Supreme Rule is absolutely right, and is called right simply without relation to a special end." (Whately) 2. Fit; suitable; proper; correct; becoming; as, the right man in the right place; the right way from London to Oxford. 5. Characterised by reality or genuineness; real; actual; not spurious. "His right wife." "In this battle, . . . The Britons never more plainly manifested themselves to be right barbarians." (Milton) 6. According with truth; passing a true judgment; conforming to fact or intent; not mistaken or wrong; not erroneous; correct; as, this is the right faith. "You are right, Justice, and you weigh this well." (Shak) "If there be no prospect beyond the grave, the inference is . . . Right, "Let us eat and drink, for to-morrow we die."" (Locke) 7. most favorable or convenient; fortunate. "The lady has been disappointed on the right side." (Spectator) 8. Of or pertaining to that side of the body in man on which the muscular action is usually stronger than on the other side; opposed to left when used in reference to a part of the body; as, the right side, hand, arm. Also applied to the corresponding side of the lower animals. "Became the sovereign's favorite, his right hand." (Longfellow) In designating the banks of a river, right and left are used always with reference to the position of one who is facing in the direction of the current's flow. 9. Well placed, disposed, or adjusted; orderly; well regulated; correctly done. 10. Designed to be placed or worn outward; as, the right side of a piece of cloth. at right angles, so as to form a right angle or right angles, as when one line crosses another perpendicularly. Right and left, in both or all directions. <medicine> Right and left coupling, a sphere in such a position that the equator cuts the horizon at right angles; in spherical projections, that position of the sphere in which the primitive plane coincides with the plane of the equator. Right is used elliptically for it is right, what you say is right, true. ""Right," cries his lordship." (Pope) Synonym: Straight, direct, perpendicular, upright, lawful, rightful, true, correct, just, equitable, proper, suitable, becoming. Origin: OE. Right, riht, AS. Riht; akin to D. Regt, OS. & OHG. Reht, G. Recht, Dan. Ret, Sw. Ratt, Icel. Rettr, Goth. Raihts, L. Rectus, p. P. Of regere to guide, rule; cf. Skr. Ju straight, right. Cf. Adroit,Alert, Correct, Dress, Regular, Rector, Recto, Rectum, Regent, Region, Realm, Rich, Riyal, Rule. Source: Websters Dictionary (01 Mar 1998) |
| right angle clamp | A clamp with a short 90 |
| right aortic arch | <radiology> Types: mirror image branching (95% most likely to be congenital ht disease), 90% tetralogy of Fallot (TOF) (25%) ** decreased PBF, 2.5% truncus (30-50%) ** increased PBF, 1.5% transposition (TGV) (5%), aberrant left subclavian artery (5% most likely to be congenital heart disease) (12 Dec 1998) |
| right atrioventricular valve | <anatomy> This heart valve, named for its three cusps (leaflets), divides the right atrium and the right ventricle. When the right atrium contracts blood flows through the tricuspid valve into the right ventricle. On closure, the tricuspid prohibits the backflow of blood into the right atrium. (19 Jan 1998) |