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급성 치성감염 병소에서 국소마취 중 유발된 과환기 -증례 보고-
유재하,김현실,백성흠,유태민,이지웅,정원균,Yoo, Jae-Ha,Kim, Hyun-Sil,Baek, Sung-Hum,Yoo, Tae-Min,Lee, Ji-Woong,Chung, Won-Gyun 대한치과마취과학회 2002 Journal of Dental Anesthesia and Pain Medicine Vol.2 No.2
Hyperventilation is defined as ventilation in excess of that required to maintain normal blood $PaO_2$ and $PaCO_2$. It is produced by several distinct causes: anxiety, respiratory alkalosis, increased blood catecholamine levels, and a decrease in the level of the ionized calcium in the blood. The dental fears about acute pain, needle, drill and dental surgery lead to the severe anxiety and increased blood catecholamine level. Therefore, the most dental patient should be cared gently as the stress reduction protocol. In spite of the gentle care, two cases of hyperventilation were occurred during local anesthesia for incision and drainage of acute odontogenic infectious lesions. We suggest that the dental patients with acute odontogenic infection must be attention for the manifestation of hyperventilation, especially in the medically compromised conditions.
전신질환자에서 과도한 감염치아부 국소마취시 스트레스 감소법 : 문헌적 고찰 및 증례보고
유재하,최병호,설성한,김하랑,모동엽,Yoo, Jae-Ha,Choi, Byung-Ho,Sul, Sung-Han,Kim, Ha-Rang,Mo, Dong-Yub 대한치과마취과학회 2008 Journal of Dental Anesthesia and Pain Medicine Vol.8 No.1
Common dental procedures (local anesthesia and dental treatment) are potentially stress-inducing in many patients, especially medically compromised patients. The body response to dental stress involves the cardiovascular system (an increase in cardiovascular workload), the respiratory organ and the endocrine system (change in metabolism). To minimize the stress to the medical risk patient, the stress reduction protocol was established. The obtained contents were as follows: (1) Recognize the patient's degree of medical risk (2) Complete medical consultation before dental therapy (3) Schedule the patient's appointment in the morning (4) Monitor and record preoperative, perioperative and postoperative vital signs (5) Use psychosedation during therapy (6) Use adequate pain control during therapy (7) Short length of appointment: do not exceed the patient's limits of tolerance (8) Follow up with postoperative pain/anxiety control (9) Telephone the higher medical risk patient later on the same day that treatment was given. This protocol is predicated on the belief that the prevention of or reduction of stress ought to begin before the start of an appointment, continue throughout treatment, and, if indicated, into the postoperative period. The authors used the stress reduction protocol in the care of local anesthesia infected teeth in medically compromised patients. The final prognosis was comfortable without any complications.
유재하,김수찬,김동연,Yoo, Jae-Ha,Kim, Soo-Chan,Kim, Dong-Yon 한국인터넷방송통신학회 2013 한국인터넷방송통신학회 논문지 Vol.13 No.5
본 논문에서는 반향제거기가 수렴하기 전에 동작할 수 있는 동시통화검출기의 성능 향상에 대한 방법을 제안하였다. 마이크로폰에 입력된 신호를 선형예측필터에 통과시키고, 이 필터링 된 신호를 사용하여 검출을 수행하게 된다. 선형예측필터 계수는 원단화자신호의 음성으로부터 얻어진다. 단일통화 시에는 반향신호가 원단화자의 신호와 유사한 음성특성을 가지므로 필터링 된 신호가 작은 값을 갖게 된다. 그러나 동시통화가 발생한 경우에는 마이크로폰 신호에 다른 특성을 갖는 신호가 포함되어 있어서 파워가 줄어들지 않게 된다. 이를 사용하여 동시통화를 검출하게 된다. 음성신호를 사용한 모의 실험을 통하여 제안한 방법이 기존의 방법에 비해 동시통화를 빠르게 검출함으로서 성능이 우수함을 확인할 수 있었다. In this paper, we proposed a performance improvement method of the double talk detector which can operate before the echo canceller converges. Microphone input signal is filtered by the linear prediction filter and this filtered signal is used for detection. The coefficients of the linear prediction filter are given by the far-end talker signal. During single talk, filtered signal has low power since the characteristics of the echo signal is similar with those of the far-end talker signal. But, during double talk, the filtered signal does not have low power because the signal of different characteristics is included in the microphone signal. Double talk is detected by this difference. Simulations using real speech signals verified that the proposed method outperformed the conventional methods.
다발성 전신질환자에서 국소마취하에 근관치료 중 유발된 실신과 혼수 치험 1예
유재하,최병호,이천의,김종배,Yoo, Jae-Ha,Choi, Byung-Ho,Lee, Chun-Ui,Kim, Jong-Bae 대한치과마취과학회 2011 Journal of Dental Anesthesia and Pain Medicine Vol.11 No.2
Altered consciousness may be the first clinical sign of a serious medical problem that requires immediate and intensive therapy to maintain life. There are many causes of the loss of consciousness in the dental office setting, such as, vasodepressor syncope, drug administration or ingestion, orthostatic hypotension, epilepsy, hypoglycemic reaction, acute adrenal insufficiency, cerebrovascular accident, hyperglycemic reaction, acute myocardial infarction, acute allergic reaction and hyperventilation. This is a case report of syncope and coma during endodontic treatment of a maxillary third molar under local infiltration anesthesia in multiple medically compromised patient. The main cause was thought to be hypoglycemic reaction. The patient was transferred to the medical emergency room and cared properly by the emergency medical physicians. The prognosis was good.
뇌졸중 환자에서 항생제 정주 후 유발된 실신과 의식소실: 증례보고
유재하,손정석,김종배,Yoo, Jae-Ha,Son, Jeong-Seog,Kim, Jong-Bae 대한치과마취과학회 2012 Journal of Dental Anesthesia and Pain Medicine Vol.12 No.4
The loss of consciousness in the dental office have many causes, such as, vasodepressor syncope, drug administration, orthostatic hypotension, epilepsy, hypoglycemic reaction, acute adrenal insufficiency, acute allergic reaction, acute myocardial infarction, cerebrovascular accident, hyperglycemic reaction and hyperventilation. Patients have fainted during all phases of dental care: during tooth extraction and other surgical procedures, during local anesthetic injections, or during procedures such as venipuncture, on being seated in the dental chair, and even on first entering the dental office. If an elderly patient with known cardiovascular or cerebrovascular problems experiences a syncopal episode, differentiation from cerebrovascular insufficiency of more serious etiology, such as cerebrovascular accident, must be considered. And anaphylactic shock is also suggested during intravenous drug administration. This is a case report of syncope care during venous injection of cephalosporin in patient with cerebrovascular accident.
저작근막동통증후군과 악관절 내장증의 원인치료 : 문헌적 고찰및 증례보고
유재하,최병호,이병인,최용석,김진권,Yoo, Jae-Ha,Choi, Byung-Ho,Rhee, Byung-In,Choi, Yong-Seok,Kim, Jin-Kwon 대한악안면성형재건외과학회 1994 Maxillofacial Plastic Reconstructive Surgery Vol.16 No.3
The authors reviewed the etiology and essential treatment of temporomandibular disorders. The principal etiology was thought to the the myospasm of masticatory musculatures by stress (major cause) and dental irritation. Therefore, we attempted to control the myospasm by stress management, isometric exercise and regular daily physical exercises (walking, Jogging, bycycling, rope skipping, swimming & gymnastic exercise). The result was more favorable (95% success rate) without recurrence in 123 patients, who was referred to our department of dentistry(Oral & Maxillofacial surgery), Wonju Christian Hospital.
항응고제 투여중인 다발성 전신질환자에서 과도한 발치창 출혈부의 진정요법과 국소마취 시행하에 창상주위 봉합과 배농술 통한 출혈과 감염조절
유재하,김종배,Yoo, Jae-Ha,Kim, Jong-Bae 대한치과마취과학회 2011 Journal of Dental Anesthesia and Pain Medicine Vol.11 No.2
There are five principal causes for excessive bleeding in the immediate postextraction phase ; (1) Vascular wall alteration (wound infection, scurvy, chemicals, allergy) (2) Disorders of platelet function (genetic defect, drug-aspirin, autoimmune disease) (3) Thrombocytopenic purpuras (radiation, leukemia), (4) Inherited disorders of coagulation (hemophilia, Christmas disease, vitamin deficiency, anticoagulation drug-heparin, coumarin, aspirin, plavix). If the hemorrhage from postextraction wound is unusually aggressive, and then dehydration and airway problem are occurred, the socket must be packed with gelatine sponge(Gelfoam) that was moistened with thrombin and wound closure & pressure dressing are applied. The thrombin clots fibrinogen to produce rapid hemostasis. Gelatine sponges moistened with thrombin provide effective coagulation of hemorrhage from small veins and capillaries. But, in dental alveoli, gelatine sponges may absorb oral microorganisms and cause alveolar osteitis (infection). This is a case report of bleeding and infection control by the circumferential suture and iodoform gauze drainage on infected active bleeding extraction socket under sedation and local anesthesia in a 71-years-old male patient with anticoagulation drug.
외상 후 오랜 시간 지체된 탈락 치아 재식술 시행 시 근관 통한 배농: 증례보고
유재하,김종배,손정석,Yoo, Jae-Ha,Kim, Jong-Bae,Son, Jeong-Seog 대한악안면성형재건외과학회 2012 Maxillofacial Plastic Reconstructive Surgery Vol.34 No.4
From the standpoint of general guidelines of a dentist, the following conditions should be considered before replanting a permanent tooth. The avulsed tooth should be without advanced periodontal disease. The alveolar socket should be reasonably intact in order to provide a seat for the avulsed tooth. The extra-alveolar period should be considered, i.e. periods exceeding. 2 hours are usually associated with marked root resorption. But, the above mentioned regulations are often difficult to keep in the actual situation of the medical emergency room, owing it to the delay of primary medical care in multiple trauma patients. The successful cases have been reported with minimal root resorption in the long-term periods, in spite of extra-alveolar periods of several hours and combined alveolar bone fracture. This is a case report regarding the effect of endodontic drainage in delayed replantation after a prolonged extra-alveolar period of the avulsed teeth with alveolar bone fracture.
뇌성마비 장애환자에서 함치성 낭종 적출과 매복 과잉치 발치후 창상처치로 배액술
유재하(Jae-Ha Yoo),손정석(Jeong-Seog Son),김종배(Jong-Bae Kim) Asia association of Disability and Oral health 2012 대한장애인치과학회지 Vol.8 No.2
In treatment of dentigerous cyst, complete enucleation, histopathologic examination and postoperative care are important to prevent the potential complications (mural ameloblastoma, squamous cell carcinoma). On the other hand, a maxillary impacted supernumerary anterior tooth are removed surgically, owing to the possibility of the cyst formation in future. After the cyst enucleation and extraction of the involved tooth, the wound area sutured and removable resin plate is then applied. In this operation, the postoperative bleeding and infection is likely to occur owing to postoperative accumulation of hematoma & seroma, psychologic stress and other contaminated factor. So, the authors established the immediate rubber & iodoform gauze drainage into the sutured wound of cyst enucleation & tooth extraction for the prevention of postoperative bleeding and infection. The removable resin splint are not used because of the poor cooperation and economic factor. The results were more favorable without the postoperative bleeding & wound infection in a cerebral palsy patient.
유재하(Jae Ha Yoo),김판식(Pan Sik Kim),정인원(In Won Jung) 대한구강악안면외과학회 1985 대한구강악안면외과학회지 Vol.11 No.1
This is a case report of mandibular prognathism with multiple missing teeth which showed more difflculties of mastication due to severe malocclusion and facial disfigurements,but well treated with the intraoral sagittal split osteotomy in the rami. The postoperative conditions about esthetics as well as occlusal pattern and masticatory efficiency were improved owing to model analysis and occlusal adjustment on an atomic articulator,cephalometric analysis of hard and soft tissue and relapse control by activator and chin cap. The results are as follows; 1. It is very required for the mandibular prognathism with missing teeth that careful diagnosis and treatment planning should be made using an anatomic articulator, and that preoperative condylar guidance and incisal guidance must be recorded for the purpose of postoperative full mouth rehabilitation. 2. The intermaxillary rubber elastic traction as well as Activator and chin cap application were more effective manners for the correction of occlusal relapse that occurred after the removal of intermaxillary fixation devices. 3. The further cooperative studies of the department of oral and maxillofacial surgery, orthodontics, prosthetics and periodontology were much necessary to improve the masticatory function and esthetics in spite of inevitable occlusal and esthetic relapse after orthognathic surgery of mandibular prognathism.