• 한국의료질향상학회지
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• 제8권1호
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• pp.44-55
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• 2001

Background : This study aimed at identifying the effect of the standardized protocol on lowering the incidence of the ventilator associated pneumonia(VAP). Methods : The standard protocol focusing on decreasing VAP was made and applied at 5 ICUs (Medical ICU, surgical ICU, Respiratory ICU, Neonatal ICU, Pediatric ICU) in a university affiliated tertiary hospital, from April 1, 2000 to Oct 31, 2000. The protocol involved 3 parts : hand washing, the suctioning method and ventilator circuit management. All the nursing personnel received intensive education which was consisted of lecture, video film and demonstration. 176 nurses reported the performance of handwashing pre and post intervention. And randomly selected 15 nurses were observed by charge nurse and the handwashing practice was analyzed pre and post intervention. The incidence of VAP was compared with the former year incidence. Results : The self reported frequency of hand washing increased. In the direct observation of handwashing, the frequency, time, thoroughness of hand washing during 8 hours day duty was found to be improved. The frequency was increased from 1.1 time to 4.1 times; the time was improved from 1.7 seconds to 5.7 seconds and the thoroughness of the washing practice was from 0.2 times to 3.0 times respectively (p<0.001). The incidence of VAP decreased from at a rate of 15.63 number of case per 1,000 ventilator-day (April 1~August 31, 1999) to 7.23 number of case per 1,000 ventilator-days(April 1~Oct 31, 2000)(P<0.001). Conclusion : We developed the protocols which included hand washing, the suctioning method, and ventilator circuit management. Through the implementation of the protocol, the performance of hand washing improved and the VAP incidence rate in ICU was decreased.

• Journal of Chest Surgery
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• 제41권6호
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• pp.736-741
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• 2008

배경: 흉부 외상 환자에 있어서 폐렴은 가장 흔한 감염증이며, 진단 및 치료의 발전에도 불구하고 이환율과 치사율을 높이는 매우 심각한 합병증이다. 본 연구는 흉부 외상 환자 중 인공호흡기 치료를 하였던 환자에서 폐렴의 임상 양상을 분석하고 그 원인 인자를 파악하고자 하였다. 대상 및 방법: 2001년 1월부터 2006년 12월까지 흉부 외상에 의해 인공호흡기 치료를 시행한 78명의 환자를 대상으로 하였다. 대상 환자 중 폐렴이 발생한 38예를 I군으로,폐렴이 발생하지 않은 40예를 II군으로 나누어 비교 분석하였다. 각 군의 병원 도착시 혈역학적 소견 및 이학적 소견, 혈액학적 소견, 외상의 원인, 흉부 외상의 형태 및 그 정도, 동반 외상, 기저 질환, 인공호흡기 이용 기간, 중환자실 입원 기간 그리고 사망률 등을 후향적으로 조사하였다. 결과: 대상 환자는 남자 57명, 여자 21명이었으며, 평균 연령은 $48.3{\pm}19.9$세였다. 흉부외상에 의해 인공호흡기 치료를 시행한 환자의 48.7%에서 외상 후 페렴이 발생하였고, 사망률은 I군에서 21.0%, II군에서 2.5%로 II군에서 현저하게 높았다. 내원시 혈역학적 소견 상 수축기 혈압이 90 mmHg 이하의 쇼크 상태로 인해 수축촉진약(inotropics)을 사용한 경우는 I군에서 24예(63.1)로 II군의 10예(25%)보다 유의하게 많았으며(p=0.001), C-Reactive Protein(CRP) 치는 I군에서 $11.3{\pm}7.8$으로 II군의 $6.4{\pm}7.3$에 비해 유의하게 높았다(p=0.006). 인공호흡기 이용기간 및 중환자실 입원 기간은 I군에서 각각 17.4일, 21.7일로 II군의 6.5일, 9.7일에 비해 유의하게 길었다(p<0.001). 결론: 외상 후 폐렴의 발생은 인공호흡기 이용 기간 및 중환자실 입원 기간이 긴 환자에서 많이 발생하였으며 그외 내원시 측정한 CRP 치가 높은 경우, 쇼크 상태로 인해 수축촉진약(inotropics)를 사용한 경우에 많이 발생하였다. 흉부 외상 환자의 치료 시 이런 요인들을 고려한다면 폐렴의 예방 및 치료에 도움이 될 것으로 생각된다.

• 한국임상약학회지
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• 제27권4호
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• pp.207-213
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• 2017

Background: It is recommended to use aerosolized (AS) colistin in patients undergoing mechanical ventilation therapy as an adjunctive in the latest guidelines, in spite of high nephrotoxicity and limited studies. In this study, systematic reviews and meta-analyzes were conducted to evaluate the safety and efficacy of AS colistin in patients with ventilator-associated pneumonia Methods: Two authors independently searched related literature published from Pubmed and EMBASE until July 2016 and included a study comparing adjunctive AS colistin with intravenous (IV) colistin monotherapy. The primary outcome was the clinical response rate, the secondary outcome was the overall mortality, and nephrotoxicity. The publication bias was evaluated using the Egger's test. Results: Of the total 279 articles, nine were finally included in the final analysis. There was a significant difference between the adjunctive AS colistin group and the IV colistin monotherapy group for the treatment-response rate (odds ratio (OR), 1.56; 95% CI, 1.14-2.14; p = 0.005; $I^2=36%$), although there was no significant difference in overall mortality (OR, 0.77; 95% CI, 0.57-1.04; p = 0.09; $I^2=20%$). However, there was no significant difference between the two groups in nephrotoxicity (OR, 1.13; 95% CI, 0.74-1.74; p = 0.57; $I^2=4%$). Conclusion: The addition of aerosolized colistin to IV colistin monotherapy showed better results in terms of efficacy than IV colistin monotherapy and did not show any significant difference in terms of total mortality and nephrotoxicity. Additional large-scale studies of this need to be verified.

• 성인간호학회지
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• 제28권6호
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• pp.628-636
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• 2016

Purpose: This study examined the effects of a program designed to prevent ventilator-associated pneumonia (VAP) on VAP rate and endotracheal colonization. The program focused on aspiration prevention and oral care. Methods: A nonequivalent control group post-test only design was utilized. One hundred patients admitted to a medical intensive care unit (MICU) or coronary care unit (CCU) were assigned to either a experimental group (n=50) or a control group (n=50). The participants were selected 48 hours following an endotracheal intubation. VAP prevention program given to the experimental group includes keeping the head of the bed to $30^{\circ}{\sim}45^{\circ}$ high, maintaining continuous endotracheal cuff pressure at 25 cm $H_2O$, performing endotracheal suction before change position, and providing oral care with 0.1% chlorhexidine every four hours. The control group received usual care. Data were analyzed using t-test, $x^2$ test, Mantel-Haenszel $x^2$ and Cox proportional harzard regression model. Results: The experimental group showed a lower VAP rate than the control group although the difference was not statistically significant ($x^2=0.79$, p=.375). The experimental group showed lower colonization in tracheal secretion than the control group ($x^2=14.59$, p<.001). Conclusion: Results showed that a VAP prevention program is effective in reducing colonization of tracheal secretion. Therefore, VAP prevention programs are recommended as an ICU nursing intervention.

• Journal of Trauma and Injury
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• 제26권4호
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• pp.291-296
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• 2013

Purpose: Prolonged ventilation leads to a higher incidence of ventilator-associated pneumonia (VAP), resulting in weaning failure and increased medical costs. The aim of this study was to analyze clinical results and prognostic factors of VAP in patients with blunt chest trauma. Methods: From 2007 to 2011, one hundred patients undergoing mechanical ventilation for more than 48 hours were divided into two groups: a VAP-negative group, (32 patients, mean age; 53 years, M:F=25:7) and a VAP- positive group, (68 patients, mean age; 60 years, M:F=56:12). VAP was diagnosed using clinical symptoms, radiologic findings and microorganisms. The injury severity score (ISS), shock, combined injuries, computerized tomographic pulmonary findings, transfusion, chronic obstructive lung disease (COPD), ventilation time, stay in intensive care unit (ICU) and hospital stays, complications such as sepsis or disseminated intravascular coagulation (DIC) and microorganisms were analyzed. Chi square, t-test, Mann-Whitney U test and logistic regression analysies were used with SPSS 18 software. Results: Age, sex, ISS, shock and combined injuries showed no differences between the VAP - negative group and - positive group (p>0.05), but ventilation time, ICU and hospital stays, blood transfusion and complications such as sepsis or DIC showed significant differencies (p<0.05). Four patients(13%) showed no clinical symptoms eventhough blood cultures were positive. Regardless of VAP, mortality-related factors were shock (p=0.036), transfusion (p=0.042), COPD (p=0.029), mechanical ventilation time (p=0.011), ICU stay (p=0.032), and sepsis (p=0.000). Microorgnisms were MRSA(43%), pseudomonas(24%), acinetobacter(16%), streptococcus(9%), klebsiela(4%), staphillococus aureus(4%). However there was no difference in mortality between the two groups. Conclusion: VAP itself was not related with mortality. Consideration of mortality-related factors for VAP and its aggressive treatment play important roles in improving patient outcomes.

• Tuberculosis and Respiratory Diseases
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• 제73권1호
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• pp.32-37
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• 2012

Background: This study evaluates the bacterial pathogens of Ventilator-associated pneumonia (VAP) in a tertiary referral hospital. Methods: A total of 109 bacterial pathogens from 91 adult patients with VAP, who were admitted to the medical intensive care unit from January 2008 to December 2009, were examined. Clinical characteristics, bacterial pathogens, and resistance profiles were analyzed. Results: Staphylococcus aureus (44%) was the most frequently isolated. Acinetobacter baumanii (30%), Pseudomonas aeruginosa (12%), Stenotrophomonas maltophilia (7%), Klebsiella pneumoniae (6%), and Serratia marcescens (2%) were isolated from the transtracheal aspirates or bronchoalveolar lavage in patients with VAP. There was no significant difference of bacterial pathogens between early and late onset VAP. All isolated S. aureus were methicillin resistant S. aureus; the imipenem resistance rate of A. baumanii was 69%. Conclusion: The two most frequent pathogens of VAP were S. aureus and A. baumanii. There were no pathogenic differences between early and late onset VAP.

• Pediatric Infection and Vaccine
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• 제27권1호
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• pp.45-52
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• 2020

목적: Carbapenem-resistant Acinetobacter baumannii (CRAB)에 의한 인공호흡기연관 폐렴(ventilator-associated pneumonia, VAP)의 치료에 있어 고용량 ampicillin-sulbactam과 colistin의 병합요법 치료효과를 살펴보기 위한 예비 연구이다. 방법: 2017년도 6월부터 2018년도 8월까지 17명의 CRAB VAP 환자를 후향적으로 분석하였다. 10명(58.8%)의 환자는 고용량 ampicillin-sulbactam과 colistin 병합요법(병합치료군)으로 치료받았으며, 나머지 7명은 colistin 단독치료를 하였거나 colistin을 포함 또는 미포함하는 다양한 항균제의 병합치료(기타치료군)를 하였다. 본 연구는 두 그룹간의 임상 및 세균학적 결과를 비교하였다. 결과: 병합치료군에서 항균제 사용 후 발열기간은 1.30±1.70일이었고, 기타치료군에서는 1.71±1.49일이었다. 기관내관 흡인물 검체에서 균이 음전 될 때까지의 평균 기간은 병합치료군에서 3.40±1.71일 기타치료군에서 11.80±8.86일이었다(P=0.030). 항균제 치료 30일 이내 사망률은 병합치료균에서 1/10 (10%)이고 기타치료군에서 3/7 (42.9%)이었다. 결론: 소아의 CRAB에 의한 인공호흡기연관 폐렴 환자에서 고용량 ampicillin-sulbactam과 colistin의 병합요법이 임상적 예후를 개선시킬 수 있을 것으로 기대된다.

• Tuberculosis and Respiratory Diseases
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• 제67권3호
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• pp.212-220
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• 2009

Background: Ventilator-associated pneumonia caused by multi-drug resistant Acinetobacter baumannii has been increasing and growing as a threat in intensive care units. Limited therapeutic options have forced clinicians to choose colistin with or without combination of other antibiotics. We tried to compare the effectiveness between colistin monotherapy and combination therapy based on in vitro synergistic tests. Methods: From January 2006 to December 2007 in medical ICU of a tertiary care hospital in Korea, We reviewed the medical records of patients treated with intravenous colistin due to ventilator-associated pneumonia caused by multi-drug resistant Acinetobacter baumannii. Results: A total of 41 patients were analyzed. 22 patients had been treated with colistin monotherapy and 19 patients with colistin and combination antibiotics that were found to have in vitro synergistic effects. Baseline characteristics were similar in both groups but the mean duration of colistin administration was significantly longer in the combination group (19.1${\pm}$11.2 days vs. 12.3${\pm}$6.8 days, p=0.042). There were no significant differences in outcome variables between the two groups. Conclusion: Combination treatment based on the in vitro antimicrobial synergy test did not show better outcomes compared with colistin monotherapy in VAP caused by multi-drug resistant A. baumannii.

• Tuberculosis and Respiratory Diseases
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• 제84권4호
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• pp.317-325
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• 2021

Background: Hospital-acquired pneumonia (HAP) and ventilator-associated pneumonia (VAP) are significant public health issues in the world, but the epidemiological data pertaining to HAP/VAP is limited in Korea. The objective of this study was to investigate the characteristics, management, and clinical outcomes of HAP/VAP in Korea. Methods: This study is a multicenter retrospective cohort study. In total, 206,372 adult patients, who were hospitalized at one of the 13 participating tertiary hospitals in Korea, were screened for eligibility during the six-month study period. Among them, we included patients who were diagnosed with HAP/VAP based on the Infectious Diseases Society of America (IDSA)/American Thoracic Society (ATS) definition for HAP/VAP. Results: Using the IDSA/ATS diagnostic criteria, 526 patients were identified as HAP/VAP patients. Among them, 27.9% were diagnosed at the intensive care unit (ICU). The cohort of patients had a median age of 71.0 (range from 62.0 to 79.0) years. Most of the patients had a high risk of aspiration (63.3%). The pathogen involved was identified in 211 patients (40.1%). Furthermore, multidrug resistant (MDR) pathogens were isolated in 138 patients; the most common MDR pathogen was Acinetobacter baumannii. During hospitalization, 107 patients with HAP (28.2%) had to be admitted to the ICU for additional care. The hospital mortality rate was 28.1% in the cohort of this study. Among the 378 patients who survived, 54.2% were discharged and sent back home, while 45.8% were transferred to other hospitals or facilities. Conclusion: This study found that the prevalence of HAP/VAP in adult hospitalized patients in Korea was 2.54/1,000 patients. In tertiary hospitals in Korea, patients with HAP/VAP were elderly and had a risk of aspiration, so they were often referred to step-down centers.

• Journal of Chest Surgery
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• 제50권5호
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• pp.346-354
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• 2017

Background: Ventilator-associated pneumonia (VAP) is a common disease that may contribute to morbidity and mortality among trauma patients in the intensive care unit (ICU). This study evaluated the associations between trauma factors and the development of VAP in ventilated patients with multiple rib fractures. Methods: We retrospectively and consecutively evaluated 101 patients with multiple rib fractures who were ventilated and managed at our hospital between January 2010 and December 2015, analyzing the associations between VAP and trauma factors in these patients. Trauma factors included sternal fracture, flail chest, diaphragm injury, traumatic aortic dissection, combined cardiac injury, pulmonary contusion, pneumothorax, hemothorax, hemopneumothorax, abbreviated injury scale score, thoracic trauma severity score, and injury severity score. Results: Forty-six patients (45.5%) had at least 1 episode of VAP, 10 (21.7%) of whom died in the ICU. Of the 55 (54.5%) patients who did not have pneumonia, 9 (16.4%) died in the ICU. Using logistic regression analysis, we found that VAP was associated with severe lung contusion (odds ratio, 3.07; 95% confidence interval, 1.12 to 8.39; p=0.029). Conclusion: Severe pulmonary contusion (pulmonary lung contusion score 6-12) is an independent risk factor for VAP in ventilated trauma patients with multiple rib fractures.