fourth heart sound

fourth heart sound
(S4) the heart sound associated with atrial contraction, occurring during the presystolic phase of diastole. It is rarely audible in normal hearts but when accentuated is usually called an S4 gallop. See also gallop rhythm, under rhythm.

Medical dictionary. 2011.

Игры ⚽ Нужно решить контрольную?

Look at other dictionaries:

  • Fourth heart sound — Infobox Disease Name = PAGENAME Caption = DiseasesDB = ICD10 = ICD9 = ICD9|427.9 ICDO = OMIM = MedlinePlus = eMedicineSubj = eMedicineTopic = MeshID = The fourth heart sound or S4 is a rare extra heart sound that occurs immediately before the… …   Wikipedia

  • fourth heart sound gallop — S4 g …   Medical dictionary

  • Heart sounds — Front of thorax, showing surface relations of bones, lungs (purple), pleura (blue), and heart (red outline). The location of best auscultation for each heart valve are labeled with M , T , A , and P . First heart sound: caused by atrioventricular …   Wikipedia

  • Heart murmur — For the French motion picture, see Murmur of the Heart. Cardiac murmurs and other cardiac sounds Auscultogram from normal and abnormal heart sounds ICD 10 …   Wikipedia

  • Heart click — With the advent of newer, non invasive imaging techniques, the origin of other, so called adventitial sounds or heart clicks has been appreciated. These are short, high pitched sounds. The atrioventricular valves of patients with mitral stenosis… …   Wikipedia

  • sound — 1. The vibrations produced by a sounding body, transmitted by the air or other medium, and perceived by the internal ear. 2. An elongated cylindrical, usually curved, instrument of metal, used for exploring the bladder or other cavities of the… …   Medical dictionary

  • Heart Station — This article is about Utada Hikaru s album. For her single, see Heart Station/Stay Gold. Heart Station Studio album by Hikaru Utada …   Wikipedia

  • Diastolic heart murmur — Auscultogram from normal and abnormal heart sounds Diastolic heart murmurs are heart murmurs heard during diastole.[1] …   Wikipedia

  • heart — /hahrt/, n. 1. Anat. a hollow, pumplike organ of blood circulation, composed mainly of rhythmically contractile smooth muscle, located in the chest between the lungs and slightly to the left and consisting of four chambers: a right atrium that… …   Universalium

  • Fourth wall — The fourth wall is the imaginary wall at the front of the stage in a proscenium theater, through which the audience sees the action in the world of the play. It was made explicit by Denis Diderot [ The Fourth Wall and the Third Space by John… …   Wikipedia

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”