• Title/Summary/Keyword: McKenzie

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Resuscitation from a pH of 6.5: A Case Report and Review of Pathophysiology and Management of Extreme Acidosis from Hypovolemic Shock after Trauma

  • Balmaceda, Alexander;Arora, Sona;Sondheimer, Ilan;Hollon, McKenzie M.
    • Journal of Trauma and Injury
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    • v.32 no.4
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    • pp.238-242
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    • 2019
  • Extreme acidosis is a life-threatening physiological state that causes disturbances in the cardiovascular, pulmonary, immune, and hematological systems. Trauma patients commonly present to the operating room (OR) in hypovolemic shock, leading to tissue hypoperfusion and the development of acute metabolic acidosis with or without a respiratory component. It is often believed that trauma patients presenting to the OR in severe metabolic acidosis (pH <7.0) will have a nearly universal mortality rate despite aggressive resuscitation and damage control. The current literature does not include reports of successful resuscitations from a lower pH, which may lead providers to assume that a good outcome is not possible. However, here we describe a case of successful resuscitation from an initial pH of 6.5 with survival to discharge home 95 days after admission with almost full recovery. We describe the effects of acute acidosis on the respiratory and cardiovascular systems and hemostasis. Finally, we discuss the pillars of management in patients with extreme acute acidosis due to hemorrhage: transfusion, treatment of hyperkalemia, and consideration of buffering acidosis with bicarbonate and hyperventilation.

Baseline Sensitivity to Mandipropamid Among Isolates of Phytophthora capsici Causing Phytophthora Blight on Pepper

  • Jang, Ho-Sun;Lee, Soo-Min;Kim, Sun-Bo;Kim, Joo-Hyung;Knight, Susan;Park, Kwee-Doo;McKenzie, Duncan;Kim, Heung-Tae
    • The Plant Pathology Journal
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    • v.25 no.4
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    • pp.317-321
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    • 2009
  • Sensitivity to the new carboxylic acid amide fungicide, mandipropamid, of Phytophthora capsici causing pepper Phytophthora blight was determined on 187 isolates collected in Korea over 3 years, from 2005 to 2007. All isolates were sensitive to mandipropamid, with $EC_{30}$ values for growth of mycelia ranging from 0.001 to $0.037\;{\mu}g/ml$. Among the isolates, 147 (79.0%) isolates were sensitive to metalaxyl, whereas others were resistant to this fungicide. Mandipropamid had the same effect on mycelium growth of both metalaxyl-sensitive and metalaxyl-resistant isolates, indicating an absence of cross-resistance between these two fungicides. Comparison of the sensitivities of P. capsici isolates showed a positive correlation between sensitivity to mandipropamid and dimethomorph ($r^2$=0.8533). The results of this study indicate that there is no evidence for development of resistance to mandipropamid in this population of P. capsici isolates collected in Korea.

Survey and Phylogenetic Analysis of Rodents and Important Rodent-Borne Zoonotic Pathogens in Gedu, Bhutan

  • Phuentshok, Yoenten;Dorji, Kezang;Zangpo, Tandin;Davidson, Silas A.;Takhampunya, Ratree;Tenzinla, Tenzinla;Dorjee, Chencho;Morris, Roger S.;Jolly, Peter D.;Dorjee, Sithar;McKenzie, Joanna S.
    • Parasites, Hosts and Diseases
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    • v.56 no.5
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    • pp.521-525
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    • 2018
  • Rodents are well-known reservoirs and vectors of many emerging and re-emerging infectious diseases, but little is known about their role in zoonotic disease transmission in Bhutan. In this study, a cross-sectional investigation of zoonotic disease pathogens in rodents was performed in Chukha district, Bhutan, where a high incidence of scrub typhus and cases of acute undifferentiated febrile illness had been reported in people during the preceding 4-6 months. Twelve rodents were trapped alive using wire-mesh traps. Following euthanasia, liver and kidney tissues were removed and tested using PCR for Orientia tsutsugamushi and other bacterial and rickettsial pathogens causing bartonellosis, borreliosis, human monocytic ehrlichiosis, human granulocytic anaplasmosis, leptospirosis, and rickettsiosis. A phylogenetic analysis was performed on all rodent species captured and pathogens detected. Four out of the 12 rodents (33.3%) tested positive by PCR for zoonotic pathogens. Anaplasma phagocytophilum, Bartonella grahamii, and B. queenslandensis were identified for the first time in Bhutan. Leptospira interrogans was also detected for the first time from rodents in Bhutan. The findings demonstrate the presence of these zoonotic pathogens in rodents in Bhutan, which may pose a risk of disease transmission to humans.

Effects of Thoracic Flexibility Exercise Program on Pain, Heart Rate Variability, and Depression in Patients with Chronic Low Back Pain (흉추 가동성 운동프로그램이 만성 요통 환자의 통증과 심박 변이도 및 우울증에 미치는 영향)

  • Park, Donghwan;Lee, Eunhyuk;Lee, Kangseong
    • Journal of The Korean Society of Integrative Medicine
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    • v.7 no.4
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    • pp.161-170
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    • 2019
  • Purpose : This study aimed to investigate the effects of a thoracic flexibility exercise program on pain, heart rate variability (HRV), and depression in patients with chronic low back pain. Methods : Fifty patients with chronic low back pain participated in this study. Each participant performed a pre-test and post-test. The outcome measures evaluated were a visual analog scale, HRV test results (automatic activity, standard deviation normal to normal [SDNN], low frequency [LF], high frequency [HF], and LF/HF ratio), and the Beck Depression Inventory. Patients underwent conventional physiotherapy for 35 minutes per session. In addition, a thoracic flexibility exercise program (trunk rotation exercise, McKenzie exercise, and supine thoracic extension exercise) were performed 3 times per week for 4 weeks. Results : After the training period, the visual analog scale results showed a significant decrease in the post-test compared to the pre-test. Automatic activity, SDNN, LF, HF, and LF/HF ratio significantly increased in the post-test compared to the pre-test. The Beck depression inventory results significantly decreased in the post-test compared to the pre-test. Conclusion : This study demonstrated that a thoracic flexibility exercise program improves a visual analog scale, HRV (automatic activity, SDNN, LF, HF, and LF/HF ratio), and the Beck Depression Inventory in patients with chronic low back pain.

The Impact of The Cervical Exercise Training on Post-traumatic Stress Disorder Patient's Cervical Pain Levels and Depression Factor (경부운동훈련이 외상 후 스트레스 장애 환자의 경부통증 수준, 우울 요인에 미치는 영향)

  • Park, Sung-doo;Shin, Young-il;Kim, Myung-joon
    • The Journal of Korean Academy of Orthopedic Manual Physical Therapy
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    • v.21 no.1
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    • pp.37-42
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    • 2015
  • Background: This study investigates the impact of the cervical musculoskeletal intervention on post-traumatic stress disorder patient's cervical pain levels and depression factor. Methods: Thrty neck pain patients diagnosed with post-traumatic stress disorder were enrolled. Neck exercise training using a sling system was applied to the experimental group and self-neck movement exercise, modification of the McKenzie exercise, was applied to the control group. Both groups were checked every week whether they performed or not. Both groups performed their exercise for 35 minutes for a time and 3 times per week. Total period of the intervention was 6 weeks. To compare the effects of interventions, threshold of cervical tenderness and depression level were measured before and after the each intervention and also measured at follow-up. Results: Painthreshold of left trapezius showed a significant difference between two groups at three points. It increased 19.71% in the experimental group after the intervention compared to before the intervention. At follow-up it also increased 20.06% in the experimental group. Pain threshold of right trapezius showed a significant difference at three points. It increased 18.35% in the experimental group after the intervention compared to before the intervention. At follow-up it also increased 15.93% in the experimental group. According to the result interaction between groups and measurement time in both side of trapezius was valid. Depression level showed significant difference in the experimental group between three points. It decreased 18.07% after the intervention compared to before the intervention and decreased 15.21% at follow-up. According to the result interaction between groups and measurement time in depression level was valid. Conclusions: This study has important implications as the therapeutic strategy, high potent of improving symptoms, shows effect to a subject who has psychological problem such as posttraumatic stress disorder (PTSD).

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Effect of Shoulder stabilization exercise and McKenzie Exercise on Forward Head Posture (거북목을 가진 사람에게 메켄지 폄운동과 어깨안정화운동이 앞쪽머리자세에 미치는 영향)

  • Lee, Jun-cheol
    • The Journal of the Convergence on Culture Technology
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    • v.5 no.4
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    • pp.227-235
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    • 2019
  • The purpose of this study was to investigate the effects of cervical vertebral height and shoulder stabilization on anterior head posture in people with turtle neck. The subjects of this study consisted of normal and healthy people with 30 turtle necks. Subjects were randomly assigned to shoulder stabilization exercise and cervical vertebrae exercise (30 men, 15 men and 15 women, height: $168.67{\pm}6.51$, $22.33{\pm}8.27$, $65.03{\pm}11.98$, and $28.66{\pm}1.91$), In the experimental group, shoulder stabilization exercise and cervical spine exercise were performed for 4 weeks. Deep neck flexor, leavator scapular, upper trapezius, rhomboid, and lower trapezius showed significant differences in shoulder stabilization and cervical vertebrae before and after the experiment. As a result, the CVA value decreased significantly and the muscle activity value increased significantly when exercise and Mckenzie program were applied. These results show that exercise and Mckenzie programs have a positive effect on turtle neck improvement.

Use of an Optical Scanning Device to Monitor the Progress of Noninvasive Treatments for Chest Wall Deformity: A Pilot Study

  • Kelly, Robert E. Jr.;Obermeyer, Robert J.;Kuhn, M. Ann;Frantz, Frazier W.;Obeid, Mohammad F.;Kidane, Nahom;McKenzie, Frederic D.
    • Journal of Chest Surgery
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    • v.51 no.6
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    • pp.390-394
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    • 2018
  • Background: The nonsurgical treatment of chest wall deformity by a vacuum bell or external brace is gradual, with correction taking place over months. Monitoring the progress of nonsurgical treatment of chest wall deformity has relied on the ancient methods of measuring the depth of the excavatum and the protrusion of the carinatum. Patients, who are often adolescent, may become discouraged and abandon treatment. Methods: Optical scanning was utilized before and after the intervention to assess the effectiveness of treatment. The device measured the change in chest shape at each visit. In this pilot study, patients were included if they were willing to undergo scanning before and after treatment. Both surgical and nonsurgical treatment results were assessed. Results: Scanning was successful in 7 patients. Optical scanning allowed a visually clear, precise assessment of treatment, whether by operation, vacuum bell (for pectus excavatum), or external compression brace (for pectus carinatum). Millimeter-scale differences were identified and presented graphically to patients and families. Conclusion: Optical scanning with the digital subtraction of images obtained months apart allows a comparison of chest shape before and after treatment. For nonsurgical, gradual methods, this allows the patient to more easily appreciate progress. We speculate that this will increase adherence to these methods in adolescent patients.

Microbusinesses and Occupational Stress: Emotional Demands, Job Resources, and Depression Among Korean Immigrant Microbusiness Owners in Toronto, Canada

  • Kim, Il-Ho;Noh, Samuel;Choi, Cyu-Chul;McKenzie, Kwame
    • Journal of Preventive Medicine and Public Health
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    • v.52 no.5
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    • pp.299-307
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    • 2019
  • Objectives: While occupational stress has long been a central focus of psychological research, few studies have investigated how immigrant microbusiness owners (MBOs) respond to their unusually demanding occupation, or how their unresolved occupational stress manifests in psychological distress. Based on the job demands-resources model, this study compared MBOs to employees with regard to the relationships among emotional demands, job resources, and depressive symptoms. Methods: Data were derived from a cross-sectional survey of 1288 Korean immigrant workers (MBOs, professionals, office workers, and manual workers) aged 30 to 70, living in Toronto and surrounding areas. Face-to-face interviews were conducted between March 2013 and November 2013. Results: Among the four occupational groups, MBOs appeared to endure the greatest level of emotional demands, while reporting relatively lower levels of job satisfaction and job security; but MBOs reported the greatest job autonomy. The effect of emotional demands on depressive symptoms was greater for MBOs than for professionals. However, an inspection of stress-resource interactions indicated that though MBOs enjoyed the greatest autonomy, the protective effects of job satisfaction and security on the psychological risk of emotional demands appeared to be more pronounced for MBOs than for any of the employee groups. Conclusions: One in two Korean immigrants choose self-employment, most typically in family-owned microbusinesses that involve emotionally taxing dealings with clients and suppliers. However, the benefits of job satisfaction and security may protect MBOs from the adverse mental health effects of job stress.

Antioxidant composition and activity of aronia leaves at different stages of maturity (아로니아 잎의 성숙도에 따른 항산화 물질 조성 및 항산화 능력)

  • Yang, Haejo;Park, Hyunjeong;Yun, Hyeongyeol;Kim, Young-Jun;Shin, Youngjae
    • Korean Journal of Food Science and Technology
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    • v.53 no.2
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    • pp.133-138
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    • 2021
  • In this study, the leaves of aronia (Aronia melanocarpa) across different stages of maturity were collected and their chlorophyll content, antioxidant content, and activity were analyzed. The leaves of the selected aronia cultivars ('Viking', 'McKenzie', and 'Kingstar K1') were harvested in June (young-stage leaf) and in August (old-stage leaf). The antioxidant content and activity of all three aronia cultivar leaves were significantly higher in the young-stage leaves than in the old-stage leaves. The main polyphenols in aronia leaves were catechol and chlorogenic acid, which tended to decrease as maturation progressed. As a result, the young-stage aronia leaves contained more abundant flavonoids, phenolic compounds, and polyphenols with higher antioxidant activity than those in the old-stage leaves. Overall, our findings indicate that aronia leaves contain potential bioactive compounds that could be used to develop functional food ingredients.

Effects of Different Ripening Stage and Varieties on Quality Characteristics and Antioxidant Activity of Aronia (Aronia Melaocarpa) (품종 및 숙도 단계에 따른 아로니아의 이화학적 품질 및 항산화 활성 연구)

  • Park, Ji Hyun;Kim, Kyung Mi;Cho, Yong Sik;Kim, Ha Yun
    • Food Engineering Progress
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    • v.22 no.4
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    • pp.374-380
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    • 2018
  • Aronia has low preference because of astringent and bitter taste. Appropriate processing is essential for eating aronia. For the processing of aronia, the aim of this study is to provide basic information on the cultivar and ripening stages. Three varieties (Viking, Nero and McKenzie) were studied. We divided the stages of maturity into four levels based on color. The physicochemical properties were analyzed. In the case of hardness, the first stage of maturity was the highest, and there was no difference between varieties. As maturation progressed, brightness and yellowness gradually decreased, and redness was highest at the second stage. The sugar content was the lowest in the Viking and significantly increased with the maturity stage. The acidity was highest in the Viking. Nero showed the highest radical scavenging ability. Total polyphenols and flavonoids were the highest in Nero. The highest level was shown at the first stage by the ripening stage.