• 한국응급구조학회지
• /
• 제16권2호
• /
• pp.75-89
• /
• 2012

Purpose : This research was designed to provide basic data for advanced pre-hospital airway management by comparing the time to ventilation and success rate for tracheal intubation performed with Macintosh laryngoscope and intubating Laryngeal Mask Airway(ILMA) in a manikin. Methods : All participants were novice users among EMT-Paramedic students and were divided into two groups: (1) the group for Macintosh laryngoscope guided tracheal intubation(MLG-TI) (2) the group for ILMA guided tracheal intubation(ILMA-TI). After an introductory lecture and demonstration, each group made an attempt ten tracheal intubation to compare the ventilation time and success rate for tracheal intubation. Results : 1) There was significant difference in the time to ventilation through MLG-TI, the time to first and second ventilation through ILMA-TI of the 10 attempts. 2) The time to first ventilation through ILMA-TI was significantly shorter than that of ventilation through MLG-TI. 3) There was no significant difference between the time to ventilation through MLG-TI and the time to second ventilation through ILMA-TI. 4) The success rates of ILMA-TI were significantly higher than those of MLG-TI. Conclusion : ILMA-TI can be an alternative method for MLG-TI in advanced pre-hospital airway management.

• Journal of Oral Medicine and Pain
• /
• 제44권3호
• /
• pp.77-82
• /
• 2019

Purpose: With the popularity of implant therapy, clinicians need to know about treating the dental implant in patients with gingival involvement of oral lichen planus (OLP). The aim of this study is to evaluate the survival and success rates of dental implant and propose of clinical guidelines for implant treatment in OLP patient with gingival involvement. Methods: A literature search was performed in PubMed/Medline, and Cochrane database. Papers in English language published between 1990 and 2019 were evaluated. The focused questions were following; 1) Dose gingival OLP affect the survival and success rates of dental implants? 2) The management of OLP patients with gingival involvement receiving dental implant. Results: There was no study about the evaluation of dental implant only in gingival OLP patient. Five studies evaluating dental implants in OLP patients were included in this review. Implant survival rate was 100.0% in well-controlled OLP patients in all included studies. The use of topical/systemic corticosteroid in OLP patients was performed before and/or after implant placement in all included studies. Conclusions: The implant survival and success rates in well-controlled OLP patients did not different from that of non-OLP healthy subjects. The gingival OLP is associated with higher rate of peri-implant mucositis. Adequate management of gingival OLP lesions before and after implant insertion is required to reduce inflammation and associated bone loss.

• Journal of Korean Dental Science
• /
• 제17권1호
• /
• pp.45-52
• /
• 2024

Purpose: To investigate the 5-year outcome of dental implants placed in a grafted maxillary sinus using recombinant human bone morphogenetic protein-2 (rhBMP-2). Materials and Methods: We retrospectively analyzed 27 implants after maxillary sinus floor augmentation (MSFA) using rhBMP-2 in 16 patients between January 2016 and March 2017. The study evaluated two outcome variables: (1) 5-year cumulative survival and success rate of the implant after functional loading and (2) marginal bone loss (MBL) for implant failure. Results: The average residual bone height was 4.78±1.53 mm. The healing period before loading was 8.35±2.34 months. The crown-to-implant ratio was 1.31±0.26. The 5-year cumulative survival and success rate after functional loading were 100% and 96.3%, respectively. The 5-year average MLB was 0.89±0.82 mm. Conclusion: Placing dental implants with MSFA using rhBMP-2 is a reliable procedure with favorable long-term survival and success rates.

• Journal of Trauma and Injury
• /
• 제18권2호
• /
• pp.112-118
• /
• 2005

Background: N-Butyl Cyanoacrylate (NBCA) is a liquid embolic material that can be useful for transcatheter arterial embolization (TAE) of acute bleeding especially in patients with coagulopathy, because it does not depend on coagulation for its therapeutic effect. The aims of this study were to evaluate the clinical efficacy and safety of TAE with NBCA in acute bleeding patients. Methods: Between August 2003 and September 2004, TAE using NBCA for acute bleeding was performed in 23 patients (16 men, 7 women; mean age, 56.5years). The causes of bleeding were gastric ulcer (n=5), postoperative bleeding (n=4), post-biopsy bleeding (n=3), postpartum bleeding (n=3), duodenal ulcer (n=2), angiodysplasia (n=2), gastric lymphoma (n=1), iatrogenic injury (n=1), CMV gastritis (n=1), stab injury of the liver (n=1). TAE was performed using 1:3 mixtures of NBCA and iodized oil. The angiographic and clinical success rate, recurrent bleeding rate, procedure-related complication and clinical outcomes were evaluated. Results: The angiographic and clinical success rate was 100% and 91.3% (21/23), respectively. There was no serious ischemic complication. Recurrent bleeding occurred in 2 patients (8.7%) and they were managed with successful second TAE (n=1) and endoscopic treatment (n=1). Nine patients (39.1%) had coagulopathy at the time of TAE and clinical success rate in this group of patients was 88.9% (8/9). Conclusions: TAE with NBCA is highly effective and safe treatment modality for acute bleeding patients, especially when the patient has a coagulopathy.

• 대한수의학회지
• /
• 제29권2호
• /
• pp.123-128
• /
• 1989

Demi-embryos were successfully produced by bisection of ICR mouse embryos at preimplantation stages. They were microsurgically bisected using a microsurgical blade attached to a micromanipulator after pretreatment with 0.5% pronase in PBS for two minutes or not. Embryos with softened zona pellucida were more easily bisected and less damaged than intact embryos. The highest success rate in bisection has been achieved by selecting blastocysts(94.1% in success rate with intact blastocysts and 100% in success rate with zona softened blastocysts). Demi-embryos without zona pellucida were cultured in D-PBS or M-16 medium at $37^{\circ}C$, 5% $CO_2$ in air for 72 hours for 2-cell stage embryos, 48 hours for 4-to 8-cell stage embryos, 24 hours for morula stage embryos and 6~12 hours for blastocyst stage embryos. For the in vitro culture of 2-cell stage embryos, $100{\mu}M$ 2Na-EDTA was added to the media. M-16 medium was better for the in vitro development of mouse embryos than PBS, and PBS is not considered to be suitable for long-term culture of embryos, especially at early stage of cleavage. In M-16 medium, developing rate of demi-embryos of which pair underwent development to form eublastocysts was 15.8% at 2-cell stage, 16.8% at 4-cell stage, 38% at 8-cell stage, 89.6% at morula stage and 94.4% at blastocyst stage, respectively. The more rapid and efficient production of demi-embryos and higher viability after bisection can be expected by softening zona pellucida with pronase and by selecting morulae or blastocysts rather than embryos at early stage of cleavage.

• Journal of the Korean Association of Oral and Maxillofacial Surgeons
• /
• 제43권2호
• /
• pp.70-76
• /
• 2017

The purpose of this study was to perform a literature review of short implants in the posterior maxilla and to assess the influence of different factors on implant success rate. A comprehensive search was conducted to retrieve articles published from 2004 to 2015 using short dental implants with lengths less than 10 mm in the posterior maxilla with at least one year of follow-up. Twenty-four of 253 papers were selected, reviewed, and produced the following results. (1) The initial survival rate of short implants in the posterior maxilla was not related to implant width, surface, or design; however, the cumulative success rate of rough-surface short implants was higher than that of machined-surface implants especially in performance of edentulous dental implants of length <7 mm. (2) While bone augmentation can be used for rehabilitation of the atrophic posterior maxilla, short dental implants may be an alternative approach with fewer biological complications. (3) The increased crown-to-implant (C/I) ratio and occlusal table (OT) values in short dental implants with favorable occlusal loading do not seem to cause peri-implant bone loss. Higher C/I ratio does not produce any negative influence on implant success. (4) Some approaches that decrease the stress in posterior short implants use an implant designed to increase bone-implant contact surface area, providing the patient with a mutually protected or canine guidance occlusion and splinting implants together with no cantilever load. The survival rate of short implants in the posterior edentulous maxilla is high, and applying short implants under strict clinical protocols seems to be a safe and predictable technique.

• Archives of Reconstructive Microsurgery
• /
• 제26권1호
• /
• pp.9-13
• /
• 2017

Purpose: Fingertip amputations are the most common type of upper limb amputations. Composite grafting is a simple and cost-effective technique. Although many factors have investigated the success of composite grafting, the success rate is not high. Therefore, this study was conducted to investigate whether the microscopic procedure process during composite grafts improves the success rate. Materials and Methods: Thirteen cases of unreplantable fingertip amputation underwent a microscopic resection procedure for composite graft in the operating room. The principle of the procedure was to remove the least devitalized tissue, maximize the clean tissue preservation and exact trimming of the acral vessel and to remove as many foreign bodies as possible. Results: All fingertips in the thirteen patients survived completely without additional procedures. Conclusion: Composite grafting allows for the preservation of length while avoiding the donor site morbidity of locoregional flaps. Most composite grafts are performed as quickly as possible in a gross environment. However, we take noticed the microscopic resection. This process is thought to increase the survival rate for the following reasons. First, the minimal resection will maximize the junction surface area and increase serum imbibition. Second, sophisticated trimming of injured distal vessels will increase the likelihood of inosculation. Third, accurate foreign body removal will reduce the probability of infection and make it possible to increase the concentration and efficiency in a microscopic environment. Although there is a need for more research into the mechanisms, we recommend using a composite graft under the microscopic environment.

• Journal of Dental Anesthesia and Pain Medicine
• /
• 제21권5호
• /
• pp.441-449
• /
• 2021

Background: The efficacy of local anesthesia decreases in patients with symptomatic irreversible pulpitis. Therefore, it was proposed that the use of premedication with an anti-inflammatory drug might increase the success rate of pulpal anesthesia in mandibular posterior teeth with vital inflamed pulp. Methods: One hundred thirty-four patients who were actively experiencing pain willingly participated in this study. The Heft Parker (HP) visual analog scale (VAS) was used to record the initial pain intensity. Patients were randomly allocated to receive a placebo, 10 mg of ketorolac, and 650 mg of paracetamol. The standard inferior alveolar nerve block (IANB) was administered to all patients using 2% lidocaine with 1:200,000 adrenaline after one hour of medication. After 15 min, the patient was instructed to rate the discomfort during each step of the treatment procedure, such as access to remaining dentin, access to the pulp chamber, and during canal instrumentation on the HP VAS. IANB was considered successful if the patient reported no or mild pain during access preparation and instrumentation. Moderate or severe pain was classified as a failure of IANB and another method of anesthesia was used before continuing the treatment. Results: The rate of successful anesthesia in the placebo, paracetamol, and ketorolac groups was 29%, 33%, and 43%, respectively, and no statistically significant difference was found between the groups. Conclusion: Preoperative administration of paracetamol or ketorolac did not significantly affect the success rate of IANB in patients with irreversible pulpitis. No significant difference was observed between the paracetamol and ketorolac groups.

• 한국사회복지학회:학술대회논문집
• /
• 한국사회복지학회 2003년도 추계학술대회 자료집
• /
• pp.185-216
• /
• 2003

본 연구에서 지체장애근로자들의 직업성공을 구성하는 요인들을 분석하고 이들 요인이 직업성공과 이직에 영향을 미치는 정도를 조사하여 가설적 이론모형을 검증하려는 목적을 두었다. 이를 위해서 지체장애를 가진 근로자 374명과 일반근로자 453명을 대상으로 구조화된 설문지를 통해 나타난 주요 연구결과들은 다음과 같이 요약되었다. 첫째, 장애근로자와 일반근로자의 직업성공을 구성하는 요인은 개인, 가정, 조직의 측면에서 나타났다. 개인적인 측면은 자아존중감과 자아효능감으로 구성되었고, 가족적인 측면은 다중역할스트레스와 자녀의 수로 구성되었다. 조직적인 측면은 자원활용능력, 네트워킹, 그리고 조언자로 구성되었다 이 밖에도 주관적인 직업성공과 객관적인 직업성공이라는 잠재변수에서 종 10개의 측정변수가 도출되었다. 둘째, 장애근로자와 일반근로자 집단 모두 직종이 직업성공에 영향을 미치는 것으로 조사되었다. 관측변수에서는 두 집단에서 직업성공에 영향을 주는 변수가 서로 다르게 나왔다. 장애근로자집단은 이직을 했을 때 평균적으로 근속한 년수와 임금을 제외하고 나머지 모든 관측변수에서 영향을 미치는 것으로 나타났으며, 일반집단은 조언자와 근속년수를 제외하고 나머지 모든 관측변수에서 영향을 미치는 것으로 조사되었다. 셋째, 장애근로자와 일반근로자 집단 모두 연령과 이직 경험이 이직 (이직횟수)에 영향을 미치는 것으로 나타났다. 그러나 장애집단은 친구의 수, 일반집단은 직업선택 시 중요하게 고려하는 사망이 각각 이직에 강한 영향을 미치는 것으로 조사되어 두 집단의 자이를 보여주었다. 또한 관측변수에서도 장애집단은 배우자의 직업과 근속년수, 일반집단은 다중역할 스트레스와 이직평균 근무년수에서 각기 다르게 이직에 영향을 미치는 것으로 나타났다. 넷째, 가설적 경로모형을 검증한 결과 제 1모형은 어느 정도 타당하고 직업성공을 예측할 수 있는 것으로 나타났으며, 제 2모형은 카이스퀘어와 자유도 ($x^2=64950$, df=61, P=0341), 기초부합치 (AGFI)는 .954, 비적합지수 (CFI)는 997, 그리고 원소간의 평균차이 (RMR)도 .038로써 모형의 적합도 지수는 모두 허용된 범위 안에 있기 때문에 매우 적합한 모형으로 직업 성공을 보다 높게 예측할 수 있는 것으로 조사되었다. 이상의 연구결과를 바탕으로 본 연구에서는 다음과 같이 결론을 도출하였다. 첫째, 직종이 두 집단 모두에서 직업성공을 예측하는데 주요한 변수로 나타나 장애근로자들의 학력을 높이고 계속해서 전문화 육에 많은 노력이 필요할 것이다. 특히, 임금정도와 같은 객관적인 직업성공 보다는 임금과 진급에서의 만족과 같은 주관적인 직업성공에 더욱 더 많은 고려를 기울여야 할 것으로 사료된다. 둘째, 장애근로자의 이직을 줄이기 위해서는 직장 내에서 유용한 인적 자원과 네트웍의 수를 늘여야 할 것이다. 이것은 장애집단이 일반집단보다 대인관계에 대해서 더 많은 시간과 노력을 기울여야 한다는 것을 의미한다.

• 벤처창업연구
• /
• 제8권1호
• /
• pp.51-59
• /
• 2013

본 연구는 국내 문헌연구와 외식업 성공사례들을 통해 외식업 창업성공요인들을 도출하고, 이 요인들이 경영성과에 미치는 영향을 창업외식업체에 대한 설문조사를 통하여 실증적 연구를 수행하였다. 첫째, 창업자 특성 요인이 경영 성과에 미치는 영향을 분석한 결과, 사회적 기술은 순이익 증가율과 고객 증가율에 유의한 영향을 주는 것으로 나타났으며 창업 준비성은 순이익 증가율, 고객 증가율 및 좌석 회전율에 유의한 결과가 확인되었다. 둘째, 운영 관리 요인에서는 접근성이 고객 증가율과 좌석 회전율에, 시설은 좌석 회전율에, 서비스 역량은 순이익 증가율과 고객 증가율 및 좌석 회전율에, 촉진 활동은 고객 증가율에 각각 유의한 것으로 확인되었다. 셋째, 상품 요인에서는 창업외식업의 경우에 품질지향성이 경영성과에 미치는 영향은 통계적으로 유의하지 않은 것으로 확인되었다. 따라서 본 연구는 외식업의 창업을 위한 요인을 제시함으로써 외식업을 창업하려는 외식창업 준비자 및 기존 외식업 사업자들의 성공전략수립에 기여할 것이다.