(1) 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.
(2) Depending on local anatomical properties duplex scanning failed to make a decision about the state of the ostium of the vertebral artery in 24% of the cases.
(3) In the hearts of normal weight (195 to 300 gm) the Thebesian valve covered the ostium of the coronary sinus an average of 41%, with complete coverage in 20%.
(4) Operative intervention showed a dysplastic bicuspid aortic valve with a membrane that covered the left coronary ostium.
(5) The intervention was undertaken for restenosis of the left venous ostium in 255 and iatrogenic mitral insufficiency in 20 patients.
(6) The left coronary ostium was reimplanted with Carrel patch method and the right coronary artery was bypassed with the saphenous vein graft.
(7) Technical problems encountered with the use of these catheters included instability of the right Judkin's catheter in the right coronary ostium owing to high torquability, streaming of contrast during left coronary injections, and difficulty entering the left ventricle with a pig-tail catheter.
(8) The proximal topography of the left common carotid artery ostium is a useful sign in the diagnosis of this kind of abnormality.
(9) Four cases of atrial septal defect, "ostium secundum", associated with pulmonary hypertension and congestive heart failure in children under the age of two years are reported.
(10) On the basis of this study the area of the right coronary ostium appears to be a bottleneck with regard to an adequate blood supply to a hypertrophic myocardium.
(11) Frequently a contrast medium reflux occurs out of the coronary ostium into the aorta.
(12) The data show that coronary sinus blood flow changes from 23 to 68 ml X min-1 per cm catheter movement, the nearer the ostium the greater the change.
(13) Another facilitating factor which is discussed is that blowing the nose may catch tenacious mucus which has partly passed through the ostium by the ciliary activity in the sinus.
(14) There were 69 SBs: 43 with severe ostium stenosis (type A); 6 with severe non ostial stenosis (type B); and 20 with no or slight nonostial stenosis (type C).
(15) The following abnormalities were found at operation: a disrupted right coronary cusp, a torn chorda of the anterior mitral leaflet, a dilated tricuspid annulus, and an intimal tear on the aortic root near the right coronary ostium that had developed into an aneurysm of the sinus of Valsalva.
(16) Furthermore, the method is useful to evaluate the optimal therapy to restore ventilation in the case of an obstructed ostium demonstrated before and after surgical opening in the inferior meatus.
(17) The transurethral dehiscence of the ostium is a therapeutic method which causes the spontaneous passage of incarcerated intramural ureteroliths.
(18) The sinus cavity was connected with the nasal cavity through an ostium.
(19) It is felt that the sphenoid mucocoele developed as a result of occlusion of the sinus ostium by scarred mucosa following radiotherapy.
(20) The left coronary artery had an anomalous origin; the left descending coronary artery originated from an independent ostium located at the right Valsalva sinus, the circumflex artery had its origin at the same ostium as the right coronary artery.
Pore
Definition:
(v.) One of the minute orifices in an animal or vegetable membrane, for transpiration, absorption, etc.
(v.) A minute opening or passageway; an interstice between the constituent particles or molecules of a body; as, the pores of stones.
(v. i.) To look or gaze steadily in reading or studying; to fix the attention; to be absorbed; -- often with on or upon, and now usually with over.
Example Sentences:
(1) The flow properties of white cells were tested after myocardial infarction, by measuring the filtration rates of cell suspensions through 8 microns pore filters.
(2) The functions of O-GlcNAc remain largely unknown, but it may be important in blocking phosphorylation sites, it may be required for the assembly of specific multiprotein complexes, it might serve as a nuclear transport signal, or it may be directly involved in the active transport of macromolecules across nuclear pores.
(3) The property of melittin pores is shown to be provided by the amino group of the N-terminal glycine residue.
(4) This force will be numerically similar to the net driving Starling force in small pores, but distinctly different in large pores.
(5) The penetration coefficient, determined by the surface tension, contact angle and viscosity, is a measure of the ability of a liquid to penetrate into a capillary space, such as interproximal regions, gingival pockets and pores.
(6) Morphometric analysis of pores and pore complexes shows their size, structure, and density to be similar to that of other mammalian cells.
(7) Nuclear pores were frequently tagged after estradiol treatment.
(8) The toxins all create pores in the cell membrane of target cells leading to eventual cell lysis and they appear to require Ca2+ for cytotoxic activity.
(9) Thus, alkaloid and insecticide modifications share many features but differ in how much the conducting properties of the pore are changed and whether the channel can close reversibly while the toxin remains bound.
(10) A minor portion of the lymph is produced also in the lymph-fold from where it is transported in the interstitial tissue either by transfer vesicles of the circulatory blood capillaries or by pores and fenestrae of the transudatory blood capillaries.
(11) In the cis-trans axis of the Golgi apparatus the following compartments were observed: (a) On the cis face there was a continuous osmiophilic tubular network referred to as the cis element; (b) a cis compartment composed of 3 or 4 NADPase-positive saccules perforated with pores in register forming wells that contained small vesicles; (c) a trans compartment composed of 1 or 2 TPPAse-positive elements underlying the NADPase ones, followed by 1 or 2 CMPase-positive elements that showed a flattened saccular part continuous with a network of anastomotic tubules.
(12) The channels studied here were more selective for monovalent cations than anions, but also showed some permeability to anions and larger electrolytes, suggesting a large functional pore diameter.
(13) Block by Ba2+, Ca2+, Mg2+, and Pt(NH3)4(2+) from the vacuolar and cytoplasmic sides is used to probe the structure of, and ion interactions within, the pore.
(14) The increased hindrance to diffusion of the probing molecules caused by the added solutes is considered as good evidence that the probing molecules diffuse by way of pores filled with water.6.
(15) We are reporting the effect of a cellulose acetate 0.20 micron filter (Flow Pore D26) on preparation of platelet poor plasma (PPP) for subsequent assay of platelet specific proteins.
(16) A further increase in silicon dioxide concentration produced tablets with relatively larger pore sizes.
(17) 1 hour after 1200 R X-ray irradiation the pore density in regenerating liver decreases 5.8-fold, consisting only of 1.7 PCs per 1 micron2 of the NE.
(18) The effect of increasing acetylcholine concentration can best be explained by postulating an increase in the effective channel radius of the water secretion pathway from 0.40 nm to 0.45 nm together with a small increase in the fraction of the total water flow passing through larger non-selective pores.
(19) A small helix is identified at the carboxy terminus of A2 which emerges through the central pore of the B subunits and probably comes into contact with the membrane upon binding, whereas the A1 subunit is flexible with respect to the B pentamer.
(20) Under conditions of chemotaxis with activated serum beneath the filter, the neutrophil population oriented at the filter surface with nuclei located away from the stimulus, centrioles and associated radial array of microtubules beneath the nuclei, and microfilament-rich pseudopods penetrating the filter pores.