(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.
Meatus
Definition:
(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.