نتایج جستجو برای: sinus
تعداد نتایج: 42032 فیلتر نتایج به سال:
Aim: To describe through a clinical case report the surgical sequence of rehabilitation with 3D-printed implantsassociated maxillary sinus floor lift synthetic regenerative materials, including biphasic bioceramic.Case Report: Patient had an agenesis upper left premolars (#12 and #13), vertical bone deficiencycaused by sinus’ pneumatization, horizontal alveolar resorption around missing teeth a...
Sinus-node function was characterized in 13 patients during cardiac catheterization by the introduction of progressively premature atrial depolarizations. Curves relating the extent of sinus-node depression following these premature depolarizations and their degree of prematurity were constructed. The maximum extent of sinus-node depression following premature depolarizations and A-V-nodal and ...
PURPOSE To determine whether sinus disease may cause acquired strabismus. METHODS Patients with idiopathic acquired (nonaccommodative) esotropia and/or hypotropia were questioned in detail about possible contributing factors (trauma; family history of strabismus; thyroid, neurologic, or rheumatologic disorders). Acute versus chronic onset was ascertained. Those without obvious cause of strabi...
To test the hypothesis that the human sinus node is capable of demonstrating multiple sites of impulse generation, we assessed spontaneous shifts in the sinus node pacemaker complex, and shifts after overdrive atrial pacing, premature atrial stimulation and carotid sinus massage. A total of 24 patients aged 59 +/- 15 years (mean +/- SD) in whom stable sinus node electrograms were obtained were ...
The silent sinus syndrome (SSS) involves painless facial asymmetry and enophthalmos, which is the result of chronic maxillary sinus atelectasis. In most cases, it is diagnosed clinically, however, using the characteristic imaging features including maxillary sinus outlet obstruction, sinus opacification, and sinus volume loss caused by inward retraction of the sinus walls. Obstruction of the ma...
PURPOSE To test the hypothesis that ischemia of the Schlemm's canal endothelium is involved in the control of intraocular pressure (IOP). METHODS Experiments were conducted on pigeons. The course of the aqueous sinus and the aqueous sinus artery was determined by examining serial sections and the distribution of polymerized resin in the limbal region of the pigeon eye. Ischemia was produced b...
Objective. To investigate the clinical features of paranasal sinus osteomas and to estimate the growth rate of these tumors in a large series of patients. Design. Case series with chart review. Setting. University hospital, tertiary referral center. Subjects and Methods. The authors retrospectively reviewed the paranasal sinus tomography scans that were taken between January 1997 and April 2008...
Case 1 A 14-year-old girl with a known diagnosis of systemic lupus erythematosus came to our department with the initial complaint of headache. Brain MRI revealed a normal brain parenchyma in all sequences. In addition, an incidental falcine sinus was observed in its entire length in sagittal images (Fig. 1A). The sinus connected the junction of the middle and posterior thirds of the superior s...
We recently described a method for measuring sinus node refractoriness in the rabbit heart. Atrial premature beats either may result in reset return responses or may become interpolated because of encroachment on sinus node refractoriness. In previous studies with rabbits we defined the effective refractory period of the sinus node (SNERP) as the longest premature interval that is interpolated....
PURPOSE OF REVIEW To review cause, clinical evaluation, medical and surgical management of isolated sphenoid sinus diseases. RECENT FINDINGS Early diagnosis of isolated sphenoid sinus diseases requires a high index of clinical suspicion and appropriate radiological imaging. Sphenoid sinus can be approached endoscopically via a few different surgical techniques. SUMMARY Isolated sphenoid sin...
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