• Title/Summary/Keyword: Invasive monitoring

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Distribution and Botanical Characteristics of Unrecorded Alien Weed Spartina anglica in Korea (미기록 외래잡초 영국갯끈풀의 국내 분포와 식물학적 특성)

  • Kim, Eun-Kyu;Kil, Jihyon;Joo, Young-Kyoo;Jung, Young-Sang
    • Weed & Turfgrass Science
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    • v.4 no.1
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    • pp.65-70
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    • 2015
  • We have found the plants belonging to the genus Spartina which has not yet been reported for the flora of Korea. This has been distributed at Dongmak seashore in Ganghwado since 2012. These were identified as common cordgrass (Spartina anglica C. E. Hubb.) belonging to the family Poaceae, the genus Spartina. It is a perennial halophyte as an alien weed that can grow in the tidal flat, native to southern England. Here, we named it for 'Young-guk-Gaet-ggeun-pool' in Korean refer the origin, reported the distribution, spreading condition, and botanical characteristics of common cordgrass. In China, Spartina anglica was introduced in 1963, it was approved that it had benefit in a bioengineering side firstly. But it was known that as a highly invasive plant to make a monotype meadow of Spartina anglica which has deteriorate the ecological function of saltmarsh. And also it has another problem that is not easy to eradicate. The spreading of Spartina anglica which was appeared in the West coast of Korea may threaten severely to the domestic mudflat and estuary ecosystem. For the maintenance of mudflat ecosystem soundly, continuous monitoring and active eradication plans are required.

Treefrog lateral line as a mean of individual identification through visual and software assisted methodologies

  • Kim, Mi Yeon;Borzee, Amael;Kim, Jun Young;Jang, Yikweon
    • Journal of Ecology and Environment
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    • v.41 no.12
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    • pp.345-350
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    • 2017
  • Background: Ecological research often requires monitoring of a specific individual over an extended period of time. To enable non-invasive re-identification, consistent external marking is required. Treefrogs possess lateral lines for crypticity. While these patterns decrease predator detection, they also are individual specific patterns. In this study, we tested the use of lateral lines in captive and wild populations of Dryophytes japonicus as natural markers for individual identification. For the purpose of the study, the results of visual and software assisted identifications were compared. Results: In normalized laboratory conditions, a visual individual identification method resulted in a 0.00 rate of false-negative identification (RFNI) and a 0.0068 rate of false-positive identification (RFPI), whereas Wild-ID resulted in RFNI = 0.25 and RFNI = 0.00. In the wild, female and male data sets were tested. For both data sets, visual identification resulted in RFNI and RFPI of 0.00, whereas the RFNI was 1.0 and RFPI was 0.00 with Wild-ID. Wild-ID did not perform as well as visual identification methods and had low scores for matching photographs. The matching scores were significantly correlated with the continuity of the type of camera used in the field. Conclusions: We provide clear methodological guidelines for photographic identification of D. japonicus using their lateral lines. We also recommend the use of Wild-ID as a supplemental tool rather the principal identification method when analyzing large datasets.

COMPARATIVE STUDY OF SEVERAL TYPE PULSE OXIMETER AND OXYGEN SATURATION EXTRACTED FROM THEM (다종의 Pulse Oximeter에서 측정된 산소 분압도의 차이와 상호 비교 결과에 대한 보고)

  • Yoo, Seung-Hoon;Kim, Eung-Hak;Kwon, Soon-Won;Kim, Jong-Soo
    • Journal of the korean academy of Pediatric Dentistry
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    • v.27 no.4
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    • pp.494-498
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    • 2000
  • A major concern in pediatric dentistry is maximizing risk management through optimal monitoring of respiratory function during sedation techniques, and Pulse Oximeter is one of the most popular devices for these purpose. Pulse Oximeter is non-invasive device for detecting the sensitive fraction between the saturated & desaturated hemoglobin. Several Studies proved that there is no significant difference between the $SpO_2$ and $SaO_2$. In this article, We examined three Pulse Oximeter $(3300MX^{(R)},\;OX90^{(R)},\;BPM200^{(R)})$. The Pulse Oximeter using shorter pulse beat averaging showed more sensitive reaction to the statue of the patient and lower saturation data. We compared pair of Pulse Oximeter applied to one patient at one time. and $BPM200^{(R)}$(using shorter pulse beat averaging) showed statistically low saturation.

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Role of Nitric Oxide and Molsidomine in the Management of Pulmonary Hypertension in Takayasu's Arteritis (타카야수동맥염에 의한 만성 폐고혈압에서 Nitric Oxide가스와 Molsidomine의 치험 3예)

  • Chin, Jae-Yong;Lee, Sung-Soon;Lee, Sang-Soo;Shim, Tae-Sun;Lim, Chae-Man;Koh, Youn-Suck;Kim, Woo-Sung;Kim, Dong-Soon;Kim, Won-Dong;Lee, Sang-Do
    • Tuberculosis and Respiratory Diseases
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    • v.48 no.6
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    • pp.964-972
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    • 2000
  • We report three patients with pulmonary hypertension in Takayasu's arteritis, who showed long-term favorable response, clinically and hemodynamically, to the nitric oxide donor, molsidomine. In these patients, the inhaled nitric oxide was effective in reducing pulmonary artery pressure (PAP) and pulmonary vascular resistance (PVR) as was shown in the acute vasodilator response test using the invasive hemodynamic monitoring. Molsidomine (single oral dose of 4 mg) was also effective in reducing PAP and PVR in the acute test, but nifedipine was not. With 4 mg of molsidomine three times daily, their dyspnea, exercise capacity and hemodynamic parameters were improved. These favorable responses have lasted during the 1st and 3rd month follow-up in all patients.

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Thoracoscopic Sympathectomy in Hyperhidrosis (비디오 흉강경을 이용한 다한증의 교감신경 절제술)

  • Sung, Sook-whan;Lim, Cheong;Kim, Joo-Hyun
    • Journal of Chest Surgery
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    • v.28 no.7
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    • pp.684-688
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    • 1995
  • Hyperhidrosis, one of the abnormalities in autonomic nervous system, has been treated with dermatologic principles or thoracic sympathectomy via conventional axillary thoracotomy or dorsal spinal approach. But these techniques were rather ineffective or invasive. Recently, VATS is widely applied in thoracic surgical area, and hyperhidrosis is not the exception of these cases.From May 1993 to August 1994, 30 patients with bilateral palmar hyperhidrosis underwent bilateral thoracic [T2, T3 sympathectomy with thoracoscopic surgery at Seoul National University Hospital. There were 20 men and 10 women and the mean age was 23.0 years.Mean operating time was 115 min and there was no thoracotomy conversion. Operative complications were anesthetic overdose in 1, Horner`s syndrome in 1, and small amount of residual pneumothorax in 6. Mean postoperative hospital stay was 2.3 days [range from 1 to 4 days and postoperative analgesics were required in 17 cases with a single dose.Sweating amount was measured in 12 patients, showing significantly decreased amount from 284.5 mg preoperatively to 18.9 mg postoperatively in 5 minutes [p=0.004 . There was no recurrence during mean 6 months follow up. Twenty two patients [73.3 % complained moderate compensatory hyperhidrosis on the trunk.In conclusion, all patients were greatly satisfied with those results including no more palmar sweating, less pain, better cosmetics, short hospital stay. In addition, recent use of sweating amount measurement and intraoperative temperature monitoring could make this technique more accurate, so we easily applied thoracoscopic sympathectomy with minimal risk.

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Liquid Biopsy: Current Status and Future Perspective in Gastric Cancer and Helicobacter Infection (액체 생검(Liquid Biopsy): 위암 및 헬리코박터 감염증에서 적응과 전망)

  • Kang, Eun A;Han, Young Min;Park, Jong Min;Yoo, In Kyung;Hong, Sung Pyo;Hahm, Ki Baik
    • The Korean journal of helicobacter and upper gastrointestinal research
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    • v.18 no.3
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    • pp.150-156
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    • 2018
  • Precision medicine stands for 4Ps - precise, preventive, participatory, and personal; in which "precision" is important because the current modern medicine starts from "trial and error," and "one does not fit all". Current targeted therapies for cancer have changed treatment approaches and led the precision medicine; however, clinical use of liquid biopsy, using blood or other liquid specimens to characterize circulating tumor cells (CTC) or tumor genes instead of biopsies of tumor tissues, still awaits availability of more information regarding non-invasive cancer detection and characterization, prediction of treatment response, monitoring the disease course and relapse possibilities, identification of mechanisms of drug resistance, and newer pathogenesis. In this review, we will introduce the basic concept of CTC, circulating cell free DNA, and exosomes and their possible application for gastric cancer relevant with Helicobacter pylori infection.

A Survey on Procedural Sedation and Analgesia for Pediatric Facial Laceration Repair in Korea

  • Dongkyu Lee;Hyeonjung Yeo;Yunjae Lee;Hyochun Park;Hannara Park
    • Archives of Plastic Surgery
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    • v.50 no.1
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    • pp.30-36
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    • 2023
  • Background Most children with facial lacerations require sedation for primary sutures. However, sedation guidelines for invasive treatment are lacking. This study evaluated the current status of the sedation methods used for pediatric facial laceration repair in Korea. Methods We surveyed one resident in each included plastic surgery training hospital using face-to-face interviews or e-mail correspondence. The health care center types (secondary or tertiary hospitals), sedation drug types, usage, and dosage, procedure sequence, monitoring methods, drug effects, adverse events, and operator and guardian satisfaction were investigated. Results We included 45/67 hospitals (67%) that used a single drug, ketamine in 31 hospitals and chloral hydrate in 14 hospitals. All health care center used similar sedatives. The most used drug administered was 5 mg/kg intramuscular ketamine (10 hospitals; 32%). The most common chloral hydrate administration approach was oral 50 mg/kg (seven hospitals; 50%). Twenty-two hospitals (71%) using ketamine followed this sequence: administration of sedatives, local anesthesia, primary repair, and imaging work-up. The most common sequence used for chloral hydrate (eight hospitals; 57%) was local anesthesia, administration of sedatives, imaging work-up, and primary repair. All hospitals that used ketamine and seven (50%) of those using chloral hydrate monitored oxygen saturation. Median operator satisfaction differed significantly between ketamine and chloral hydrate (4.0 [interquartile range, 4.0-4.0] vs. 3.0 [interquartile range, 3.0-4.0]; p <0.001). Conclusion The hospitals used various procedural sedation methods for children with facial lacerations. Guidelines that consider the patient's condition and drug characteristics are needed for safe and effective sedation.

Synthesis of Ce-doped In2O3 nanoparticles via a microwave-assisted hydrothermal pathway and their application as an ultrafast breath acetone sensor

  • Byeong-Hun Yu;Sung Do Yun;Chan Woong Na;Ji-Wook Yoon
    • Journal of the Korean institute of surface engineering
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    • v.56 no.6
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    • pp.393-400
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    • 2023
  • Acetone, a metabolite detected from the exhaled breath of people doing a diet, can be used for non-invasive monitoring of diet efficiency. Thus, gas sensors with rapid response and recovery characteristics to acetone need to be developed. Herein, we report ultrafast acetone sensors using Ce-doped In2O3 nanoparticles prepared by the one-pot microwave-assisted hydrothermal method. The pure In2O3 sensor shows a high response and fast response time (τres = 6 s) upon exposure to 2 ppm acetone at 300 ℃, while exhibiting a relatively sluggish recovery speed (τrecov = 1129 s). When 20 wt% Ce is doped, the τrecov of the sensor significantly decreased to 45 s withholding the fast-responding characteristic (τres = 6 s). In addition, the acetone response (resistance ratio, S) of the sensor is as high as 5.8, sufficiently high to detect breath acetone. Moreover, the sensor shows similar acetone sensing characteristics even under a highly humid condition (relative humidity of 60%) in terms of τres (6 s), τrecov (47 s), and S (4.7), demonstrating its high potential in real applications. The excellent acetone sensing characteristics of Ce-doped In2O3 nanoparticles are discussed in terms of their size, composition, phase, and oxygen adsorption on the sensing surface.

Treatment Response Evaluation of Cardiac Amyloidosis Using Serial T1- and T2-Mapping Cardiovascular Magnetic Resonance Imaging (T1 지도화 기법 심장 자기공명영상 추적 검사를 이용한 심장 아밀로이드증의 치료 반응 평가)

  • Jinwoo Son;Yoo Jin Hong
    • Journal of the Korean Society of Radiology
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    • v.82 no.2
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    • pp.429-434
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    • 2021
  • Amyloidosis is a multisystemic disease characterized by the accumulation of abnormal proteins in extracellular spaces in various organs, with frequent involvement of the myocardium. We report a case of a patient who had cardiac amyloidosis with a trend of reduction in native T1 and T2 values and extracellular volume fraction on serial cardiac magnetic resonance imaging after chemotherapy and stem cell transplantation. The native T1 value and the extracellular volume fraction are closely associated with tissue amyloid burden in amyloidosis patients. This case demonstrated that cardiac magnetic resonance imaging may be used as a non-invasive and quantitative biomarker in the treatment monitoring of amyloidosis.

Outcomes of Extracorporeal Membrane Oxygenation in COVID-19: A Single-Center Study

  • Sahri Kim;Jung Hyun Lim;Ho Hyun Ko;Hong Kyu Lee;Yong Joon Ra;Kunil Kim;Hyoung Soo Kim
    • Journal of Chest Surgery
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    • v.57 no.1
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    • pp.36-43
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    • 2024
  • Background: Coronavirus disease 2019 (COVID-19) can lead to acute respiratory failure, which frequently necessitates invasive mechanical ventilation and extracorporeal membrane oxygenation (ECMO). However, the limited availability of ECMO resources poses challenges to patient selection and associated decision-making. Consequently, this retrospective single-center study was undertaken to evaluate the characteristics and clinical outcomes of patients with COVID-19 receiving ECMO. Methods: Between March 2020 and July 2022, 65 patients with COVID-19 were treated with ECMO and were subsequently reviewed. Patient demographics, laboratory data, and clinical outcomes were examined, and statistical analyses were performed to identify risk factors associated with mortality. Results: Of the patients studied, 15 (23.1%) survived and were discharged from the hospital, while 50 (76.9%) died during their hospitalization. The survival group had a significantly lower median age, at 52 years (interquartile range [IQR], 47.5-61.5 years), compared to 64 years (IQR, 60.0-68.0 years) among mortality group (p=0.016). However, no significant differences were observed in other underlying conditions or in factors related to intervention timing. Multivariable analysis revealed that the requirement of a change in ECMO mode (odds ratio [OR], 366.77; 95% confidence interval [CI], 1.92-69911.92; p=0.0275) and the initiation of continuous renal replacement therapy (CRRT) (OR, 139.15; 95% CI, 1.95-9,910.14; p=0.0233) were independent predictors of mortality. Conclusion: Changes in ECMO mode and the initiation of CRRT during management were associated with mortality in patients with COVID-19 who were supported by ECMO. Patients exhibiting these factors require careful monitoring due to the potential for adverse outcomes.