What's the difference between leaflet and valve?

Leaflet


Definition:

  • (n.) A little leaf; also, a little printed leaf or a tract.
  • (n.) One of the divisions of a compound leaf; a foliole.
  • (n.) A leaflike organ or part; as, a leaflet of the gills of fishes.

Example Sentences:

  • (1) Urinalysis revealed a low pH, increased ketones and bilirubin excretion, dark yellowish change in color, the appearance of "leaflet-shaped" crystals and increased red blood cells and epithelial cells in the urinary sediment, increased water intake, decreased specific gravity and decreased sodium, potassium and chloride in the urine.
  • (2) To evaluate the relationship between the motion pattern and degree of organic change of the anterior mitral leaflet (AML) and the features of the mitral component of the first heart sound (M1) or the opening snap (OS), 37 patients with mitral stenosis (MS) were studied by auscultation, phonocardiography and echocardiography.
  • (3) Autopsy revealed a primary intimal sarcoma with osteogenic elements arising in the posterior leaflet of the pulmonary valve and obstructing the main pulmonary artery and its right branch.
  • (4) A block of tissue bounded by the ostium of the coronary sinus, the pars membranacea, the septal leaflet of the tricuspid valve and the atrial and ventricular septa is removed.
  • (5) To investigate whether lipids could also be transported from the inner to the outer leaflet, lipid probes residing exclusively in the inner leaflet were monitored for their appearance in the outer leaflet.
  • (6) Our observations demonstrated that echographic coaptation of the aortic valve leaflets coincides with the trough of the aortic pressure incisura and the onset of A2.
  • (7) Echocardiographic studies provided the precise noninvasive diagnosis by demonstrating large aneurysms arising below the posterior mitral leaflet.
  • (8) Twenty-one of the 22 patients showed systolic anterior movement of the anterior leaflet of the mitral valve on a cineangiogram and the papillary muscles and left ventricular wall were moderately to severely hypertrophied in 18 patients.
  • (9) The participants strongly preferred the experimental leaflets to the approved leaflets, both with respect to accessibility of the contents (overall preference 78.1% v 17.8%) and ease of understanding the contraindications of drug use (90.2% v 73.7%).
  • (10) Sixty days after 5,7-DHT administration, immunoreactive serotonin in the forebrain, particularly the suprachiasmatic nuclei and intergeniculate leaflets, was severely depleted in 16 animals, moderately depleted in four and only slightly affected in four.
  • (11) The fairytales – which have been distributed by leaflet to universities around Singapore – include versions of Cinderella, the Three Little Pigs, Rapunzel and Snow White, each involving a reworked tale that relates to fertility, sex or marriage, and a resulting moral.
  • (12) The city council’s community safety team, now responsible for a leaflet campaign urging young Muslims not to join Isis, used to employ 31-year old Mashudur Choudhury as a racial harassment worker.
  • (13) It was not related to a greater degree of dilatation of the tricuspid ring but to more severe septal and right ventricular infarction causing prolapse of the septal and posterior septal leaflets into the right atrium.
  • (14) The edge of the valve leaflet and the other 2 cusps were intact.
  • (15) The opening amplitude of the leaflet as well as the slope of the ejection fraction were not decreased.
  • (16) Changes in strain in the line of aortic valve leaflet attachment (aortic ring) were measured during the cardiac cycle by means of an inductive technique.
  • (17) Angiographic features felt to indicate valve tearing were present following 17 of 25 procedures and included increased excursion or straightening of leaflets, localized change in leaflet motion (flail leaflet), and the presence of an additional contrast jet through the valve.
  • (18) Furthermore, the long axis of the right and left atria was measured from the center of the apposed atrioventricular valve leaflets to the posterior atrial wall, and the sizes of the atrial chambers were defined using their widths at the prospective broadest points through the area of foramen ovale.
  • (19) One valve displayed a fixed outward eversion of the free margin of two leaflets.
  • (20) To date, 3-dimensional studies have demonstrated that the mitral valve is saddle-shaped in systole, so that apparent superior leaflet displacement in the mediolateral 4-chamber view, often seen in otherwise normal individuals, lies entirely within the bounds defined by the mitral annulus and occurs without leaflet distortion or actual displacement above the entire mitral valve.

Valve


Definition:

  • (n.) A door; especially, one of a pair of folding doors, or one of the leaves of such a door.
  • (n.) A lid, plug, or cover, applied to an aperture so that by its movement, as by swinging, lifting and falling, sliding, turning, or the like, it will open or close the aperture to permit or prevent passage, as of a fluid.
  • (n.) One or more membranous partitions, flaps, or folds, which permit the passage of the contents of a vessel or cavity in one direction, but stop or retard the flow in the opposite direction; as, the ileocolic, mitral, and semilunar valves.
  • (n.) One of the pieces into which a capsule naturally separates when it bursts.
  • (n.) One of the two similar portions of the shell of a diatom.
  • (n.) A small portion of certain anthers, which opens like a trapdoor to allow the pollen to escape, as in the barberry.
  • (n.) One of the pieces or divisions of bivalve or multivalve shells.

Example Sentences:

  • (1) This paper discusses the typical echocardiographic patterns of a variety of important conditions concerning the mitral valve, the left ventricle, the interatrial and interventricular septum as well as the influence of respiration on the performance of echocardiograms.
  • (2) External phonocardiography performed at the time of cardiac catheterization revealed that this loud midsystolic click disappeared whenever a catheter was positioned across the mitral valve.
  • (3) All patients with localized subaortic hypertrophy had left ventricular hypertrophy (left ventricular mass or posterior wall thickness greater than 2 SD from normal) with a normal size cavity due to aortic valve disease (2 patients were also hypertensive).
  • (4) Valve-related complications were noted in four patients.
  • (5) Digestion is initiated in the gastric region by secretion of acid and pepsin; however, diversity of digestive enzymes is highest in the post-gastric alimentary canal with the greatest proteolytic activity in the spiral valve.
  • (6) The aortic area (Torlin) for diseased stenotic aortic valves was calculated in 10 patients using two different methods; data obtained in preoperative cardiac catheterization and by intraoperative flowmetric and aortic and left ventricular pressure-recording measurements, and their mutual correlation was tested.
  • (7) He underwent a mitral and aortic valve replacement, followed by a complicated postoperative course.
  • (8) In addition, spontaneous platelet aggregation is increased when vegetations are present on cardiac valves.
  • (9) This report represents the first comprehensive description of instantaneous and continous phasic blood velocity at the mitral valve during atrial arrhythmias in man.
  • (10) This study demonstrated that significant global and regional ventricular dysfunction develops immediately after removal of the papillary muscles, whereas myocardial contractility is preserved in patients undergoing mitral valve repair.
  • (11) The autopsy findings in 41 patients with University of Cape Town aortic valve prostheses were studied.
  • (12) This developed concept of "valve only" energy loss has the potential of standardising the findings of different research groups by removing the arbitrary selection of measurement points from reported results.
  • (13) The organisms were predominantly associated with host deposits of erythrocytes, phagocytes, platelets, and fibrinous-appearing material, which collectively appeared on the valve surface in response to trauma.
  • (14) Autopsy revealed a primary intimal sarcoma with osteogenic elements arising in the posterior leaflet of the pulmonary valve and obstructing the main pulmonary artery and its right branch.
  • (15) With a series of 117 aortic valve replacements, the authors have examined the results in relation to the method of protecting the myocardium while the aorta is clamped off.
  • (16) Left ventricular rupture is a serious complication of mitral valve replacement.
  • (17) Any type of valve element can serve as the expiratory valve.
  • (18) Echocardiographic findings included an abrupt midsystolic, posterior motion (greater than 3 mm beyond the CD line) in five patients, multiple sequence echoes in six, and posterior coaptation of the mitral valve near the left atrial wall in six.
  • (19) A block of tissue bounded by the ostium of the coronary sinus, the pars membranacea, the septal leaflet of the tricuspid valve and the atrial and ventricular septa is removed.
  • (20) A case of tricuspid valve endocarditis with spinal epidural abscess caused by Actinobacillus actinomycetemcomitans is reported in a 74-year-old male with an endocardial pacemaker.