(n. sing. & pl.) A natural passage or canal; as, the external auditory meatus. See Illust. of Ear.
Example Sentences:
(1) The observed staining indicated that the epithelium of the external auditory meatus has a pattern of keratin expression typical of epidermis in general and the epithelium of the middle ear resembles simple columnar epithelia.
(2) For the management and prevention of the recurrent ascending infections long-term urinary disinfection and meticulous toilet of the external meatus are recommended.
(3) In addition, histopathologic examination revealed squamous epithelial hyperplasia in the vestibule; inflammation, epithelial necrosis, mucosal erosions, and squamous metaplasia of the respiratory epithelium in the anterior nose; and olfactory sensory cell loss in the dorsal medial meatus.
(4) So far we believe that loss of hearing caused during these operations is mainly due to the unfavorable location of the cochlear blood supply through the meatus.
(5) Blood at the urethral meatus was noted in only five patients, gross hematuria without metal blood in another three, and a displaced prostate on rectal exam was found in 10 cases.
(6) The purpose of this study was to analyze the results obtained with a surgical technique developed to prevent postoperative stenosis or total closure of the newly formed auditory meatus and to achieve at least serviceable hearing in the majority of cases.
(7) The cochlear summating potential (SP) preceding the auditory nerve compound action potential (AP) was elicited by broadband alternating condensation and rarefaction clicks and recorded by noninvasive electrodes from the external auditory meatus (EAM) of 60 volunteers of both sexes, 12 to 67 years old, who had normal hearing for age.
(8) The right petrous bone was hypoplastic and showed total superior dehiscence of the internal acoustic meatus.
(9) The observations allow the conclusion that during acute otitis media the duration of mastoiditis development reduced and many classical symptoms of mastoiditis, e. g. protrusion of the posterior-superior wall of the external acoustic meatus, profuse purulent discharge from the ear, hyperemia, swelling of the behind-the-ear area, occurred less frequently.
(10) A case is reported of angiomatous malformation involving the facial and vestibilocochlear nerves within the internal auditory meatus.
(11) There is no need for fenestration via the inferior meatus.
(12) Antibacterial ointment applied to the urethral meatus in females with recurrent urinary tract infections (UTIs) has been reported to decrease the incidence of UTIs.
(13) So the internal auditory meatus was packed with Gelfoam and muscle piece.
(14) 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.
(15) In most of these ears the angle from the medial edge of a suboccipital craniectomy allowed the surgeon a direct view of the lateral part of the internal auditory meatus with good exposure of the transverse crest without his having to open the labyrinth.
(16) An excellent surgical result requires careful case selection, avoiding cases with thin or rigid ventral parameatal skin or a meatus too proximal or too wide.
(17) A serie of 20 dissections carried out in the anatomy Laboratory enabled us to make a close observation of the middle meatus of the nasal cavity.
(18) In the open meatus acoustic energy radiated by the bony walls becomes dissipated.
(19) The axis of the internal acoustic meatus to the horizontal plane in adults and postnatal changes.
(20) A terminal meatus was achieved in all cases; there were two fistulae and one meatal stenosis.
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.