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Introduction: After elective surgery of head and neck region, one of the complaints of patients is unsteadiness and vertigo. This complaint was seen more in some surgeries in clinical experiences, one of which is rhinoplasty. Given the community's increasing trend to rhinoplasty, considering this complaint of patients is important for appropriate prevention or treatment Objective: To evaluate vertigo occurrence inpatients undergoing rhinoplasty, Amiralmomenin Hospital of Rasht Materials and Methods: In this case-control study, 63 patients in case group (Rhinoplasty) and 50 patients in control group (Functional Endoscopic Sinus Surgery), were evaluated for vertigo. The two groups were matched for possible confounding factors. All the patients were evaluated for vertigo l week, land 3 months after surgery. Also, in rhinoplastic patients, lateral osteotomy approach was considered as a possible factor. Using SPSS 19, data were analyzed with t and /2 tests and P<0.05 was considered significant. Results: Fifty patients of case group and 45 patients of control group were followed for 3 months. Female patients comprised 80 and 44.4% of case and control groups, respectively. The frequency of vertigo in patients of case group was 17, 3 and 2, respectively. Only one case was due to benign paroxysmal positional vertigo and others were due to orthostatic hypotension. In control group, frequency of vertigo was 11,1 and 1, respectively. The cause of all cases was orthostatic hypotension. The rhinoplastic patients with external and internal lateral osteotomy approach complained of vertigo in 58.6 and 11.5%, respectively. This difference was significant statistically (P<0.0001). Conclusion: This study showed that the most frequent cause of vertigo in both groups is pseudo vertigo and due to orthostatic hypotension. It seems that true vertigo is not associated with operation types (including rhinoplastic and nasal endoscopy). We advised more detailed investigations with larger sample size in this area. [ABSTRACT FROM AUTHOR]

Background: Paranasal sinus disease is one of the most common problems of patients that refer to ENT centers. Adding to clinical examination; imaging plays an important role in diagnosis and treatment. Also the imaging of paranasal sinuses is necessary before surgery. Although computed tomography is the modality of choice for these areas, it has some disadvantages which the most important one is its high patient's dose. The aim of this study is the comparison between cone beam volumetric tomography and conventional computed tomography computed tomography, in evaluation of these areas. Methods: In this descriptive-analytic study Coronal computed tomography imaged and cone beam volumetric tomography images were performed for 40 patients referred to ENT department of Amir Aelam Hospital in Tehran, Iran. Computed tomography images were observed by general radiologist and cone beam volumetric tomography images by Maxillofacial radiologist and their results' were recorded. Also ENT surgeon recorded her observations during surgery. Data were analyzed using McNemar test with Kappa and weighted Kappa agreement coefficient. Results: No statistical difference was shown between the efficacy of computed tomography and cone beam volumetric tomography in evaluation of paranasal sinuses (p> 0.05). Conclusion: As there was not any difference between conventional computed tomography and cone beam volumetric tomography in the assessment of paranasal sinuses and additional advantages of the later, cone beam volumetric tomography is suggested for paranasal sinus imaging before surgery. [ABSTRACT FROM AUTHOR]