| 释义 |
cardiac murmur
Thesaurus| Noun | 1. | cardiac murmur - an abnormal sound of the heart; sometimes a sign of abnormal function of the heart valvesheart murmur, murmursymptom - (medicine) any sensation or change in bodily function that is experienced by a patient and is associated with a particular diseasesystolic murmur - a murmur heard during systole |
Cardiac Murmur
cardiac murmur[′kärd·ē‚ak ¦mər·mər] (medicine) Any adventitious sound heard in the region of the heart. Also known as heart murmur. Cardiac Murmur (also heart murmur), a sound accompanying heart function and occurring in the pauses between heart sounds. Cardiac murmurs are longer aperiodic sound vibrations than heart sounds. They are detected by auscultation and phonocardiography. There are organic and functional cardiac murmurs. Organic heart murmurs are primarily caused by blood passing through apertures that have become narrowed as a result of pathological processes. The deformation and adhesion of valves result from inflammatory diseases (most often rheumatic fever) or sclerotic processes that are congenital anomalies of the heart and major vessels. Strictures of the normal path of blood flow occur; such strictures include cardiac, aortic, and pulmonary stenoses. Reverse blood flow through a narrow slit in the heart results from abnormal connections between the chambers of the heart or from cusps that are prevented from closing properly (valvular insufficiency). Knowledge of the existence of an organic cardiac murmur is often very important in the diagnosis of heart disease. Functional cardiac murmurs may result from an acceleration of blood flow or from differences in papillary muscular tension. Such murmurs are found in persons suffering from certain diseases (for example, anemia) and in healthy children, young women, and, often, athletes. Functional cardiac murmurs may be variants in the normal sound picture of heart function. I. M. KAEVITSER cardiac murmur
murmur [mer´mer] an auscultatory sound, benign or pathologic, loud or soft, particularly a periodic sound of short duration of cardiac or vascular origin.aortic murmur a sound indicative of disease of the aortic valve.apex murmur (apical murmur) a heart murmur heard over the apex of the heart.arterial murmur one in an artery, sometimes aneurysmal and sometimes constricted.Austin Flint murmur a loud murmur" >presystolic murmur at the apex heard when regurgitation" >aortic regurgitation is preventing the mitral valve from closing; called also Flint's murmur.blood murmur one due to an abnormal, commonly anemic, condition of the blood. Called also hemic murmur.cardiac murmur heart murmur.cardiopulmonary murmur one produced by the impact of the heart against the lung.continuous murmur a humming heart murmur heard throughout systole and diastole.crescendo murmur one marked by progressively increasing loudness that suddenly ceases.Cruveilhier-Baumgarten murmur one heard at the abdominal wall over veins connecting the portal and caval systems.diastolic murmur a heart murmur heard at diastole, due to mitral obstruction or to aortic or regurgitation" >pulmonic regurgitation with forward flow across the atrioventricular valve; it has a rumbling quality.Duroziez's murmur a double murmur during systole and diastole, palpated over the femoral or another large peripheral artery; due to insufficiency" >aortic insufficiency.ejection murmur a murmur" >systolic murmur heard predominantly in midsystole, when ejection volume and velocity of blood flow are at their maximum; it is produced by ejection of blood into the pulmonary artery and aorta.Flint's murmur Austin Flint murmur.friction murmur friction rub.functional murmur a heart murmur occurring in the absence of structural changes in the heart, usually due to high cardiac output states. Called also innocent murmur and physiologic murmur.Gibson murmur a long rumbling sound occupying most of systole and diastole, usually localized in the second left interspace near the sternum, and usually indicative of patent ductus arteriosus. Called also machinery murmur.Graham Steell murmur a high-pitched murmur" >diastolic murmur due to regurgitation" >pulmonic regurgitation in patients with pulmonary hypertension and mitral stenosis.heart murmur see heart murmur.hemic murmur blood murmur.innocent murmur functional murmur.machinery murmur Gibson murmur.mitral murmur a heart murmur due to disease of the mitral valve; it can be either obstructive or regurgitant.musical murmur one that has a periodic harmonic pattern; it may be either a heart murmur or a murmur" >vascular murmur.organic murmur one due to a lesion in the organ or organ system being examined, e.g., in the heart, in a blood vessel, or in lung tissue.pansystolic murmur a murmur" >regurgitant murmur heard throughout systole, due to blood flow between two chambers normally of very different pressures in systole; the most common causes are regurgitation" >mitral regurgitation, regurgitation" >tricuspid regurgitation, and ventricular septal defects.physiologic murmur functional murmur.prediastolic murmur one occurring just before and with diastole, due to regurgitation" >aortic regurgitation or regurgitation" >pulmonic regurgitation.presystolic murmur one shortly before the onset of ventricular ejection, usually associated with a narrowed atrioventricular valve.pulmonic murmur one due to disease of the pulmonary valve or artery.regurgitant murmur a heart murmur due to a dilated valvular orifice with consequent regurgitation" >valvular regurgitation.seagull murmur a raucous murmur resembling the call of a seagull, frequently heard in stenosis" >aortic stenosis or regurgitation" >mitral regurgitation.Still's murmur a functional heart murmur of childhood, with a buzzing or vibratory tone heard in midsystole; it usually disappears by puberty.systolic murmur a heart murmur heard at systole, usually due to mitral or regurgitation" >tricuspid regurgitation or to aortic or pulmonary obstruction.to-and-fro murmur a friction sound or murmur heard with both systole and diastole.tricuspid murmur a heart murmur caused by disease of the tricuspid valve; it may be either obstructive or regurgitant.vascular murmur one heard over a blood vessel.vesicular murmur vesicular breath sounds.car·di·ac mur·mura murmur produced within the heart, at one of its valvular orifices or across ventricular septal defects.car·di·ac mur·mur (kahr'dē-ak mŭr'mŭr) A sound generated by blood flow through the heart, at one of its valvular orifices or across ventricular septal defects. cardiac murmur Any abnormal sound arising from the heart. Murmurs are timed according to the phase of the heartbeat in which they occur. They may be may be presystolic, systolic, pansystolic, diastolic or continuous (see SYSTOLE). They are also described according to their character.car·di·ac mur·mur (kahr'dē-ak mŭr'mŭr) A sound generated by blood flow through the heart, at one of its valvular orifices or across ventricular septal defects. Patient discussion about cardiac murmurQ. What is a Heart Murmur? My friend told me that some people have a heart murmor and it is normal. Is that possible? What is a heart murmur?A. A heart murmur is a sound that is created by inadequate blood flow through the heart and its large vessels, for example the aorta. Some are born with a heart murmur and further testing doesn't reveal any significant problem. This is called a physiological murmur.
http://www.5min.com/Video/What-is-Innocent-Heart-Murmur-5501 Q. How are Heart Murmurs Classified? What are the characteristics of different heart murmurs?A. Heart murmurs are charachterized by their location, their strength, their timing, whether or not they radiate and so on. For example, this is a sound of a heart murmur compatible with a disease called aortic stenosis-
http://www.dundee.ac.uk/medther/Cardiology/audio/as.wav
Notice that the murmur begin with the heart sound and lasts all through the beat. More discussions about cardiac murmurLegalSeemurmurcardiac murmur
Related to cardiac murmur: tachycardia, Heart soundsSynonyms for cardiac murmurnoun an abnormal sound of the heartSynonymsRelated Words |