(n.) A small opening, perforation, or orifice; a fenestra.
Example Sentences:
(1) The complete facetectomy (36 observations) exposes the foramen well but has a little risk of destabilisation.
(2) At surgery, upon incision of the paravertebral muscle fascia, viscous pale fluid was encountered emanating from a foramen in the thoracic lamina.
(3) Progressive narrowing of the bulboventricular foramen is documented in four patients with single ventricle.
(4) CT brain scans showed an enlarged foramen magnum in the mother and daughter but magnetic resonance imaging (MRI) showed no brainstem abnormality in either.
(5) Since fractures of the foramen triosseum are usually not surgically repairable, they can be stabilized with coaptation splints.
(6) 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.
(7) The septum primum, as the valve of the foramen ovale, has been previously described as a mobile, echogenic line or dot in the left atrium.
(8) The authors described a fluoroscopic method of guiding percutaneous needle penetration of the foramen ovale.
(9) The average thickness of the corpus callosum at the level of the foramen of Monro was 6 mm in normal subjects and was reduced below 6 mm in 16 of the hydrocephalus patients.
(10) Hydrocephalus and valvular impaction of the cerebellum in the foramen magnum were demonstrated.
(11) With systole there is downward (caudal) flow of CSF in the aqueduct of Sylvius, the foramen of Magendie, the basal cisterns and the dorsal and ventral subarachnoid spaces while during diastole, upward (cranial) flow of CSF in these same structures is seen.
(12) The cecal foramen pointer was invented for a Sistrunk median cervical cyst operation.
(13) Enlargement in an adjacent conjugating foramen forms a tumour which may narrow the spinal canal (1 case diagnosed by CAT) or erode the vertebral body, so compromising the spinal support.
(14) The earliest perfect ring-shaped formation of the foramen ovale is observed in the 7th fetal month and the latest in 3 years after birth.
(15) Arterial oxygen tension was lower in patients with a patent foramen ovale (mean 55 [SD 14] vs 62 [16] mm Hg, p = 0.038).
(16) Body weight was not correlated with foramen magnum area in 25 specimens of savannah sparrow, Ammodramus sandwichensis.
(17) The common tumors originating in the jugular foramen are chemodectoma and schwannoma.
(18) They are determined primarily by (a) the pulpal response of an immature tooth to trauma, and (b) the mechanical difficulties encountered when attempts are made to obturate the root canal of a tooth with a widely patent apical foramen.
(19) Successful penetration of the foramen was achieved in 39 of 46 injections on cadavers and in six injections on five patients.
(20) A patient with symptomatic oscillopsia without downbeat nystagmus, who was diagnosed by magnetic resonance imaging to have displaced cerebellar tonsils below the foramen magnum, is presented here.
Orifice
Definition:
(n.) A mouth or aperture, as of a tube, pipe, etc.; an opening; as, the orifice of an artery or vein; the orifice of a wound.
Example Sentences:
(1) The authors propose three regular procedures with which they are experienced: repair with a large retromuscular nonabsorbable synthetic tulle prosthesis for extensive epigastric eventrations, fillup aponeuroplasty using the sheath of the rectus abdominis associated with a premuscular patch in case of diastasis or of multiple superimposed orifices and suture associated with a small retromuscular auxiliary patch to treat small incisional hernias.
(2) The parameters of LES relaxation for both wet and dry swallows were similar using either a carefully placed single recording orifice or a Dent sleeve.
(3) The important concept implicit in this formula is that the hemodynamic evaluation of a stenotic valve requires that the pressure gradient across that valve be examined in light of the cardiac output passing through the orifice.
(4) Bronchoscopy may then be carried out in order to study the area surrounding the diverticular orifice more closely, and to establish the condition of its mucous lining.
(5) To study the effect of air sac pressures, a controllable pressure difference was produced between the air sac orifices of fixed duck lungs.
(6) This determines that the ureteral orifice enter the urogenital sinus laterally with respect to the Wolffian duct.
(7) The orifice size was slightly, but not significantly, smaller in patients over age 70 years compared with those younger than 70.
(8) In the light of experience acquired in our Echocardiography Laboratory, we recommend, in accordance with data from the literature, the exclusive use of pulsed Doppler and measurement of valve orifices by two-dimensional imaging at the point of insertion of the aortic and sigmoid cusps as well as at the mitral ring.
(9) Then using mathematical rules we configured out the mean volume of the root canal of each group and the mean value of the diameter of the orifice of the canal of each group of teeth.
(10) Loading is achieved by the production of transient, survivable plasma membrane disruptions as cells are passed back and forth through a standard syringe needle or similar narrow orifice.
(11) The standard surgical management of patients presenting with transitional cell carcinoma of the upper urinary tract is nephroureterectomy with excision of a cuff of bladder around the ureteric orifice.
(12) In this color Doppler method, one or more isovelocity surface areas (PISA), delineated by blue and red aliasing velocity interfaces, can be identified proximal to the narrowed orifice.
(13) Mitral orifice area is best determined with cross-sectional (two-dimensional) imaging systems.
(14) Hemodynamic comparison of the Carpentier-Edwards bioprosthesis with the standard Hancock xenograft showed similar effective orifice areas for the 23 and 25 mm diameter valves.
(15) Histological examination revealed ductal tissue in the wall of a pulmonary artery in more than half of the cases with atresia of the pulmonary orifice.
(16) Peak velocities in the rapid filling phase (R) and atrial contraction phase (A) were measured using two-dimensional Doppler echocardiography in the center of the mitral orifice in diastole.
(17) By combining Doppler catheter, echocardiographic and cardiac catheterization techniques, the effective aortic regurgitant orifice area may be estimated; this hydrodynamic area correlates with grading by supravalvular aortography.
(18) Recent improvements in two-dimensional, planar instrumentation promise to make echocardiography even more versatile, permitting more comprehensive views of left ventricular function, valve orifice areas, and the spatial relationships of the great vessels and ventricular chambers.
(19) The proximal isovelocity surface area (PISA) method, assessed by color Doppler echocardiography, has gained acceptance as a means of calculating flow rate through regurgitant orifice.
(20) The authors have gained minimum blood losses when suturing with provisional catgut ligature through the urinary bladder bottom between interureteral fold and internal urethral orifice yet before dessection of adenoma surgical capsule and tumor enucleation.