Clinical Analysis of Olfactory Dysfunction

정동학,백석인,정영교,김광범 대한비과학회 1995 Journal of rhinology Vol.2 No.2

The smell and taste disorders are common in the general population, yet little is known about their nature or causes. This article describes a study of 108 patients with complaints of abnormal smell or taste perception who visited the Wonju Christian Hospital Smell and Taste Center. We investigated the olfactory detection threshold using butanol and the whole mouth taste detection threshold tests using sucrose, citric acid, sodium chloride, and quinine chloride. 1) The common causes of olfactory dysfunction were nose and sinus diseases, head trauma, and post URI group. 2) The degree of olfactory disturbance was more correlated with the patency of olfactory fissure rather than the degree of sinus infection. 3) In head trauma patients with smell dysfunction, the common sites of head injury patients were frontal and skull base area. 4) Dysosmia was more commonly present in post-URI group. 5) Although 17 patients (16%) complained of tast loss, three (3%) were found to have taste dysfunction at the whole mouth taste tests. Recently, Zinc sulfate and steroid were introduced for treatment of smell and taste disorders ; but it may provide no benifit to patient with chemosensory dysfunction. Further study are necessary for diagnosis of olfactory dysfunction and for treatment using the regenerative characterics of olfactory narve.

Clinical Study of Rhinoplasty Procedures

정동학,백석인,김승권,박동준,이정석 대한비과학회 1995 Journal of rhinology Vol.2 No.1

A retrospective study was performed in 36patients who underwent rhinoplasty at our institute from January of 1993 through August 1994. Although most of the patients were satisfied with the surgical results, revision surgery was performed in two cases due to unsatisfactory aesthetic appearance. Postoperative complication included temporary dislocation of the implants in three cases, and extrusion of the implants, abscess formation and pneumothorax in one case respectively. We preferred the external approach to the intranasal approach because former provides wide operative field and more complete correction with acceptable scar. In the cases of simple aesthetic procedure, the local anesthesia seems to be superior to the general anesthesia because in case of local anesthesia, the operator can communicate with the patient during the operation. Although the silastic block is known to have some benefits, we had more complications in using it. Instead, more satisfactory results were obtained with the allograft material such as septal or tragal cartilage. This result, however, need more long term follow up, and further studies employing various implant materials will contribute to better surgical outcome.

Lengthening of Short Noses

정동학,최종철,장태영,김민욱,김진 대한비과학회 2000 Journal of rhinology Vol.7 No.2

Background and Objectives:Lengthening of short noses is one of the therapeutic dilemmas in facial plastic surgery. Aesthetically, short noses are characterized by a decreased distance from the root of the nose to the tip-defining point, and thisextends less than one third the vertical height of the face. Also, concavity of the dorsum, a low and deep nasion, anoverprojected tip, and an obtuse nasolabial angle of the nose will give a shortened appearance. Considering aesthetical andfacial analytic factors, we discuss three techniques for the correction of this problem and propose useful procedure for thedesired effect of lengthening in this study. Materials and Methods:We have experienced eleven cases of lengthening of theshort nose during the last 2 years. We categorized these patients into three groups according to nasolabial angle and tipprojection which make a distribution in selecting procedure. On-lay graft on the caudal margin of the lower lateral cartilage isused to the patients with mild overrotated tip and proper nasal projection. Cartilage graft between the caudal septum and thelower lateral cartilge combined with on-lay graft on the caudal margin of the lower lateral cartilage is used to the patients withmoderately overrotated tip. Full-length dorsal augmentation is applied to the patients with severely overroatated tip andproblematic tip projection. Results:We used three techniques aimed at the correction of the short nose. These techniquestreated short nose patients and we obtained effective substantial lengthening results in this study. Conclusion:Aesthetical andfacial analytic factors must be considered in properly selecting a procedure to lengthen the short nose.

LATTICE 알고리즘을 이용한 신호처리에 관한 연구 ( A study on the signal estimation using lattice algorithms )

정동학,양해원 대한전자공학회 1987 대한전자공학회 학술대회 Vol.1987 No.01

성문하 확장과 단단문합술을 동시에 이용한 기관 및 성문하 협착증 치험 2례

정동학,김병훈,조정일,김영진 대한기관식도과학회 1997 大韓氣管食道科學會誌 Vol.3 No.1

Laryngotracheal stenosis is one of the most troublesome diseases in the Em field. Subglottic stenosis can be treated by a cricoid augmentation with rib cartilage. In case of tracheal stenosis, the treatment of choice is by tracheal end-to-end anastomosis after resection of the stenotic site. However, in case of subglottic stenosis combined with tracheal stenosis, it is hard to manage. Even though several methods(such as thyrotracheal anastomosis) have been tried, they have some limitations too much excision of normal trachea and too much pulling up of the trachea after resection of the stenotic lesion. The authors have managed two cases of laryngotracheal stenosis as an anterior and posterior subglottic augmentation with an autologous cartilage graft and laryngotracheal anastomosis. The first few weeks after the operation, we could do a decannulation successfully, but in one case the patient developed restenosis. Even though one case was unsuccessful, the authors believe that this method could be used in the treatment of laryngotracheal stenosis.

혈관화된 쇄골을 이용한 기관재건술

정동학,송승용,윤정선,정영석 대한기관식도과학회 1997 大韓氣管食道科學會誌 Vol.3 No.2

One of the most difficult airway problems is a subglottic stenosis combined with a tracheal stenosis. Laryngotracheal stenosis has not been completely solved with classic methods like cricotracheal split with autogenous cartilage graft, thyrotracheal anastomosis, and free hyoid or hyoid-sternohyoid myo-osseous flap reconstruction. A 28-near-old male patient who had had laryngotracheal stenosis was successfully treated by laryngotracheal reconstruction using vascularized clavicle. This method has a several advantages: the vascularized clavicle harvesting in the same operative fields, one stage operation, less restenosis due to plentyful blood supply, md prevention of airway collapse due to a clavicle provided framework. It is too early to make a definite conclusion, but the authors suggested that this method could become one of the most effective methods of laryngotracheal stenosis.

호흡곤란을 유발한 유피낭포 2례

정동학,조정일,김영진,윤정선 대한기관식도과학회 1997 大韓氣管食道科學會誌 Vol.3 No.1

A dermoid cyst is a rare congenital midline neck mass with usually develops in the submental region. It is most often seen in young adults and can become rather large than almost no symptoms. As it increases in size, dysphasia, or dyspnea can develop. The differential diagnosis of the midline lesion includes ranula, thymglossal duct cyst, cystic hygroma, and cystic lymphangioma. The treatment of choice is complete surgical removal. With a review of the literature, we report two cases of a huge dermoid cyst inducing dyspnea.

인두위문합술과 유리공장이식술을 이용한 하인두 및 경부식도 재건술

정동학,김영모,이원영,김대식,노병선 대한기관식도과학회 1996 大韓氣管食道科學會誌 Vol.2 No.1

Reconstruction for hypopharynx and cervical esophagus after wide resection of extensive hypopharynx and larynx cancers have been used various methods including myocutaneous flaps, gastric pull up, md jejunal or large bowel free graft. Recently, the authors had experienced hypopharynx and larynx cancers with extension to the posterior hypopharyngeal wall and thoracic esophagus. Of course, these reconstructive methods should be selected in accordance with the patient's age, physical status, extend of prim.:W lesion, and defect after on block resection, however, gastric pull up was performed in hypopharynx cancer which had skipped lesion in the thoracic esophagus and jejunal free grafts were performed in case 2, 3 which had a extended lesions to the posterior pharyngeal wall. Some complications were noted, which were successfully stabilized by conservative managements. The gastric pull up and jejunal free graft were considered suitable methods for reconstrunction of hypopharynx and cervical esophagus, however, further studies are necessary about it.

비근과 비첨융기를 이용한 축소 외비성형술

정동학,윤정선,조정현,윤영석,송승용,장태영,정영석 대한이비인후과학회 1998 대한이비인후과학회지 두경부외과학 Vol.41 No.1

혀에 발생한 다발성 근내 지방종 1례

정동학,임정혁,박선기,이명택 대한이비인후과학회 2001 대한이비인후과학회지 두경부외과학 Vol.44 No.2