Network


Latest external collaboration on country level. Dive into details by clicking on the dots.

Hotspot


Dive into the research topics where Theognosia S. Chimona is active.

Publication


Featured researches published by Theognosia S. Chimona.


Laryngoscope | 2005

Benign paroxysmal positional vertigo: 10-year experience in treating 592 patients with canalith repositioning procedure.

Emmanuel P. Prokopakis; Theognosia S. Chimona; Minas Tsagournisakis; Panagiotis Christodoulou; Barry E. Hirsch; Vassilios A. Lachanas; Emmanuel S. Helidonis; Andreas Plaitakis; George A. Velegrakis

Objective: To assess the long‐term efficacy of canalith repositioning procedure (CRP) in the treatment of patients with benign paroxysmal positional vertigo (BPPV).


Journal of Medical Case Reports | 2009

Brown tumor of the maxillary sinus in a patient with primary hyperparathyroidism: a case report

Efklidis Proimos; Theognosia S. Chimona; Dimetrio Tamiolakis; Michalis G Tzanakakis; Chariton E. Papadakis

IntroductionBrown tumors are rare focal giant-cell lesions that arise as a direct result of the effect of parathyroid hormone on bone tissue in some patients with hyperparathyroidism. Brown tumors can affect the mandible, maxilla, clavicle, ribs, and pelvic bones. Therefore, diagnosis requires a systemic investigation for lesion differentiation.Case presentationWe present a 42-year-old Greek woman, with a rare case of brown tumor of the maxillary sinus due to primary hyperparathyroidism. Primary hyperparathyroidism is caused by a solitary adenoma in 80% of cases and by glandular hyperplasia in 20%.ConclusionsDifferential diagnosis is important for the right treatment choice. It should exclude other giant cell lesions that affect the maxillae.


Operations Research Letters | 2003

Cochlear Implantation after Radical Mastoidectomy: Management of a Challenging Case

Alexander D. Karatzanis; Theognosia S. Chimona; Emmanuel P. Prokopakis; Dionysios E. Kyrmizakis; George A. Velegrakis

Due to increasing experience and technological improvement, the selection criteria for cochlear implantation have improved. Cochlear implant application can now be performed in selected patients with pathological middle ear lesions. The surgical approach to a patient with a history of bilateral radical mastoidectomy is addressed in detail. The benefits of cochlear implantation in this case are also discussed.


Journal of Otolaryngology | 2006

Canal wall down mastoidectomy for cholesteatoma: experience at the University of Crete.

John G. Bizakis; Theognosia S. Chimona; Jiannis K. Hajiioannou; Emmanuel P. Prokopakis; Spiros Karampekios; Chariton E. Papadakis; Emmanuel S. Helidonis

OBJECTIVE To evaluate clinical and audiologic data as well as operative findings and postoperative follow-up in the management of chronic cholesteatomatous otitis media with canal wall down mastoidectomy (CWDM). STUDY DESIGN A retrospective review of cases followed up between 1990 and 2002. SETTING Tertiary referral centre. METHOD Two hundred one patients with chronic otitis media with cholesteatoma underwent CWDM. MAIN OUTCOME MEASURES Clinical presentation, surgical findings, and audiologic evaluation were assessed. RESULTS Preoperatively, eight patients suffered from vertigo and four presented with facial nerve paralysis. In 40 patients (20%), erosion of the lateral semicircular canal was found, and in 31 patients (15%), there was dehiscence of the facial nerve canal. Dural plate erosion and sinus plate dehiscence were found in 13 and 17 patients, respectively. Nine patients experienced serious endocranial complications at their admission. The malleus was noted to be intact in the majority of patients in all age groups. The incus was eroded or absent in most of the cases in all age groups. On postoperative evaluation 3 months after surgery, 195 audiograms were performed, with a mean pure-tone average of 55 dB HL and a mean air-bone gap of 30 dB HL. CONCLUSION Although CWDM has the disadvantages of the necessity to avoid water insertion in the external auditory canal and lifelong mastoid care, it is an effective treatment in a single-step procedure for patients with advanced disease and for those who refuse to submit to postoperative follow-up.


Journal of Otolaryngology | 2003

Laser-assisted uvulopalatoplasty for the treatment of snoring and mild obstructive sleep apnea syndrome

Dionysios E. Kyrmizakis; Theognosia S. Chimona; Chariton E. Papadakis; John G. Bizakis; George A. Velegrakis; Sofia Schiza; Nikolaos M. Siafakas; Emmanuel S. Helidonis

OBJECTIVE To determine the efficacy of the laser-assisted uvulopalatoplasty (LAUP) procedure on snoring and Apnea-Hypopnea-Index (AHI) improvement in patients with snoring and mild obstructive sleep apnea syndrome (OSAS). STUDY DESIGN Prospective, nonrandomized, nonblinded assessment of outcomes after LAUP in patients suffering from benign habitual snoring and/or mild OSAS. METHODS Fifty-nine patients with habitual snoring and 25 patients with mild OSAS underwent LAUP (6 of them underwent simultaneous classic tonsillectomy and 20 carbon-dioxide laser tonsillotomy). All patients and their bed partners completed pre- and post-treatment questionnaires ranking snoring, whereas the patients with mild OSAS underwent postoperative polysomnography (PSG). RESULTS During a 6-month to 5-year follow-up (mean 40 months), 91.5% of the patients with habitual snoring reported significant short-term improvement based on post-treatment questionnaires, whereas 79.7% reported long-term subjective improvement. Nineteen of 25 patients (76%) with mild OSAS reported significant improvement of snoring based on posttreatment questionnaires. According to the postoperative PSG, only 2% showed a worse AHI, whereas 60% showed reduction of the AHI to < or = 5. Eight patients (32%) showed little or no improvement of AHI. CONCLUSIONS LAUP, in combination with carbon-dioxide laser tonsillotomy in some cases, is a safe, cost-effective, outpatient procedure for the treatment of many cases of habitual snoring and mild OSAS when preceded by careful selection of the candidates.


Journal of Voice | 2012

Evaluating the Outcome of Phonosurgery: Comparing the Role of VHI and VoiSS Questionnaires in the Greek Language

Devora Kiagiadaki; Theognosia S. Chimona; Gregory Chlouverakis; Yannis Stylianou; Efklidis Proimos; Chariton E. Papadakis; John G. Bizakis

OBJECTIVES/HYPOTHESIS The objective was to study the role of the Greek version of Voice Handicap Index (VHI) in comparison with Voice Symptom Scale (VoiSS) in terms of measuring voice surgery outcome in patients with benign laryngeal lesions. STUDY DESIGN Nonrandomized prospective. METHODS Forty-six patients operated for benign laryngeal lesions were enrolled in the present study. All patients were assessed according to the European Laryngological Society guidelines. In terms of self-evaluation, patients answered the Greek versions of both VHI and VoiSS, preoperatively and 6 weeks postoperatively, and the results were statistically analyzed. RESULTS The strongest correlation was observed between the functional subscale of VHI and the impairment subscale of VoiSS, as well as, between the emotional subscales of both VHI and VoiSS, pre- and postoperatively. A statistically significant change in subscale and total scores was found. VHI and VoiSS subscales and total scores correlated with the stroboscopic and aerodynamic measurements in a variable manner. Perceptual measurements, as well as shimmer and harmonic-to-noise ratio showed significant correlation with both VHI and VoiSS subscale and total scores postoperatively. CONCLUSION VHI and VoiSS are considered useful tools in evaluating voice surgery outcome, in the Greek language.


European Archives of Oto-rhino-laryngology | 2005

Arteriovenous malformation of the floor of the mouth: a case report

Theognosia S. Chimona; Chariton E. Papadakis; Adam A. Hatzidakis; George A. Velegrakis

Arteriovenous malformations of the head and neck are rare lesions with unclear pathogenesis. They usually present during childhood, growing proportionately to the child. Although preoperative superselective embolization followed by surgical resection is the treatment of choice, complete removal is often not feasible, leading to high recurrence rates. The case of a patient with an arteriovenous malformation of the floor of the mouth diagnosed late in her adulthood and its management are presented.


Audiology and Neuro-otology | 2011

Auditory Brainstem Response Changes during Exposure to GSM-900 Radiation: An Experimental Study

Antigoni Kaprana; Theognosia S. Chimona; Chariton E. Papadakis; Stylianos Velegrakis; Ioannis O. Vardiambasis; Georgios Adamidis; George A. Velegrakis

The objective of the present study was to investigate the possible electrophysiological time-related changes in auditory pathway during mobile phone electromagnetic field exposure. Thirty healthy rabbits were enrolled in an experimental study of exposure to GSM-900 radiation for 60 min and auditory brainstem responses (ABRs) were recorded at regular time-intervals during exposure. The study subjects were radiated via an adjustable power and frequency radio transmitter for GSM-900 mobile phone emission simulation, designed and manufactured according to the needs of the experiment. The mean absolute latency of waves III–V showed a statistically significant delay (p < 0.05) after 60, 45 and 15 min of exposure to electromagnetic radiation of 900 MHz, respectively. Interwave latency I–III was found to be prolonged after 60 min of radiation exposure in correspondence to wave III absolute latency delay. Interwave latencies I–V and III–V were found with a statistically significant delay (p < 0.05) after 30 min of radiation. No statistically significant delay was found for the same ABR parameters in recordings from the ear contralateral to the radiation source at 60 min radiation exposure compared with baseline ABR. The ABR measurements returned to baseline recordings 24 h after the exposure to electromagnetic radiation of 900 MHz. The prolongation of interval latencies I–V and III–V indicates that exposure to electromagnetic fields emitted by mobile phone can affect the normal electrophysiological activity of the auditory system, and these findings fit the pattern of general responses to a stressor.


Journal of Vestibular Research-equilibrium & Orientation | 2015

Age related changes in ocular motor testing in healthy subjects.

Fokion Seferlis; Theognosia S. Chimona; Chariton E. Papadakis; John G. Bizakis; Stefanos Triaridis; Charalambos E. Skoulakis

The aim of the present study was the investigation of age influenced changes in ocular motility testing in healthy subjects. Two hundred and fifty subjects between 18 and 70 years old were enrolled in a prospective study. Study population was divided in 5 groups of 50 subjects each (group A: 18-30 years old, group B: 31-40 years old, group C: 41-50 years old, group D: 51-60 years old and group E: 61-70 years old). Ocular motility was recorded by video-oculography and age related normative data were obtained with respect to: a) gain and slow phase velocity of smooth pursuit tracking, b) latency, velocity and accuracy of saccade eye movements and c) gain and slow phase velocity of optokinetic eye movements. The influence of age on all parameters was examined by one-way ANOVA. A statistically significant difference was found in all parameters analyzed for smooth pursuit test, saccade eye movements and optokinetic eye movements in between groups. In conclusion, aging influences the majority of the parameters in ocular motility testing, carried out by means of video-oculography. Elderly healthy subjects showed a deterioration of performance in all parameters of the eye tracking tested. Age must be taken into account during interpretation of the eye tracking tests, especially in patients with central nervous system lesions.


Operations Research Letters | 2012

Clinical Application of Subjective Measurements for OSAS Assessment: Predictive Factors of Syndrome Severity

Efklidis Proimos; Devora Kiagiadaki; Antigoni Kaprana; Theognosia S. Chimona; Nicolas J. Maroudias; Chariton E. Papadakis

Purpose of the Study: To examine the clinical value of subjective evaluations of obstructive sleep apnea syndrome (OSAS) in correlation with syndrome severity as diagnosed with polysomnography. Procedures: 210 patients with mild to severe OSAS were assessed. Objective evaluation included polysomnography. Subjective assessment included full ENT examination, neck circumference (NC) plus body mass index measurements, Mueller maneuver and Epworth Symptom Scale (ESS). Results: The presence of lateral pharyngeal wall movement, abnormal ESS scoring and male gender can be considered independent risk factors for the prediction of moderate/severe OSAS (p < 0.05). Increased NC can also be considered a clinical risk factor related to male gender and lateral pharyngeal wall movement (p = 0.05). Conclusions: Subjective OSAS assessment, including evaluation of lateral pharyngeal wall movement, ESS scoring and NC measurement can safely predict, mainly in males, OSAS severity, as diagnosed with polysomnography. Message of the Paper: Subjective assessment from the ENT point of view should raise high suspicion towards the early diagnosis of moderate/severe OSAS.

Collaboration


Dive into the Theognosia S. Chimona's collaboration.

Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar
Top Co-Authors

Avatar

John Panayiotides

National and Kapodistrian University of Athens

View shared research outputs
Top Co-Authors

Avatar

Antigoni Kaprana

Technological Educational Institute of Crete

View shared research outputs
Researchain Logo
Decentralizing Knowledge