scholarly journals Study of quantitative bacterial cultures of non-bronchoscopic samples in ventilator associated pneumonia

2018 ◽  
Vol 5 (5) ◽  
pp. 1837 ◽  
Author(s):  
Mohamed Azarudeen ◽  
B. S. Sharma ◽  
Pankaj Kumar Jain ◽  
Alok Kumar Goyal ◽  
Bharti Malhotra
Keyword(s):  
Mechanical Ventilation ◽  
Observational Study ◽  
Early Onset ◽  
Late Onset ◽  
Sampling Techniques ◽  
Ventilator Associated Pneumonia ◽  
Quantitative Culture ◽  
Gram Negative ◽  
Bacterial Cultures ◽  
Causative Agents

Background: Diagnosis of VAP based on non bronchoscopic samples-ETA, NB-BAL culture. The aim is to study quantitative culture of the non-bronchoscopic sampling techniques such as Blind Broncho-alveolar lavage (NB-BAL) and endotracheal aspirates (ETA)in Ventilator Associated Pneumonia. It is a hospital based, observational study conducted in SPMCHI, Jaipur from September 2015 to September 2016.Methods: Seventy patients who were under mechanical ventilation for more than 48 hours and clinically suspected for VAP were included in the study and divided into early and late onset VAP. The NB-BAL and ETA were obtained from these patients and quantitative cultures were performed.Results: Out of the 70 samples analysed, 60 patients were found positive in BAL and 61 positive in ETA. The agreement between NB-BAL and ETA is 86.8%. GNBs remain the main burden of both early and late onset VAP. Most common organisms isolated were Enterobacter and Acinetobacter in early onset and Pseudomonas and Acinetobacter in late onset VAP. All the GNB isolates were sensitive to Polymyxin and Colistin and were resistant to majority of routinely used antibiotics.Conclusions: The quantitative culture of   non-bronchoscopic samples is a useful alternative to bronchoscopy, in the diagnosis of VAP in resource deprived centers. MDR gram negative bacilli are the main causative agents of VAP. 

scholarly journals Etiology and resistance patterns of bacteria causing ventilator-associated pneumonia in a respiratory intensive care unit

2017 ◽  
Vol 74 (10) ◽  
pp. 954-962 ◽  
Author(s):  
Vlada Injac ◽  
Uros Batranovic ◽  
Jovan Matijasevic ◽  
Marija Vukoja ◽  
Mirjana Hadnadjev ◽  
...  
Keyword(s):  
Intensive Care ◽  
Klebsiella Pneumoniae ◽  
Early Onset ◽  
Late Onset ◽  
Resistance Rate ◽  
Ventilator Associated Pneumonia ◽  
Gram Negative ◽  
Resistance Patterns ◽  
Acinetobacter Spp ◽  
Gram Negative Organisms

Background/Aim. Ventilator-associated pneumonia (VAP) incidence, causative pathogens, and resistance patterns are different among countries and intensive care units (ICUs). In Europe, resistant organisms have progressively increased in the last decade. However, there is a lack of data from Serbian ICUs. The aims of this study were to evaluate etiology and antimicrobial resistance for pathogens causing VAP in ICU patients, to examine whether there were differences among pathogens in early-onset and late-onset VAP and to identify mortality in patients with VAP after 30 and 60 days of hospitalization. Methods. A retrospective cohort study was conducted in the respiratory ICU and all adult patients diagnosed with VAP from 2009 to 2014 were included. Results. Gram negative organisms were the major pathogens (80.3%). The most commonly isolated was Acinetobacter spp (59.8%). There was a statistically significant increase in the incidence of infection with Klebsiella pneumoniae (8.9% vs 25.6%; p = 0.019). Extensively drugresistant strains (XDR) were the most common (78.7%). Lateonset VAP was developed in 81.1% of patients without differences among pathogens in comparison with early-onset VAP. Acinetobacter spp was susceptible to tigecycline and colistin with a significant increase in resistance to ampicillin/sulbactam (30.2% vs 58.6%; p = 0.01). Resistance rate of Pseudomonas aeruginosa and Klebsiella pneumoniae to carbapenems was 38% and 11%, respectively. In methicillin-resistant Staphylococcus aureus no resistance was observed against vancomycin and linezolid. There was no difference in mortality rate between patients with earlyonset and late-onset VAP after 30 and 60 days of hospitalization. Conclusion. Gram negative organisms were the primary cause of bacterial VAP of which the most common was the XDR strain of Acinetobacter spp. Patients with early- and late-onset VAP had the same pathogens. There was no difference in mortality between this two group of patients during 60 days of hospitalization.

scholarly journals Emergence of blaNDM-1 and blaVIM producing Gram-negative bacilli in ventilator-associated pneumonia at AMR Surveillance Regional Reference Laboratory in India

PLoS ONE ◽  
2021 ◽  
Vol 16 (9) ◽  
pp. e0256308
Author(s):  
Mithlesh Kumari ◽  
Sheetal Verma ◽  
Vimala Venkatesh ◽  
Prashant Gupta ◽  
Piyush Tripathi ◽  
...  
Keyword(s):  
Early Onset ◽  
Late Onset ◽  
Antibiotic Resistance Genes ◽  
Health Concern ◽  
Reference Laboratory ◽  
Ventilator Associated Pneumonia ◽  
Gram Negative ◽  
Carbapenem Resistant ◽  
Resistance Patterns ◽  
Prior Surgery

Introduction Ventilator-associated pneumonia (VAP) may be a life threatening nosocomial infection encountered in intensive care units. Currently the emergence of carbapenem-resistant Gram-negative pathogens has become worrisome threat worldwide. Material and methods Endotracheal aspirates samples were collected from patients who were under mechanical ventilation for > 48 h. The bacterial isolates were identified by MALDI-TOF-MS and antibiotic susceptibility testing performed. All carbapenem resistant isolates were tested by Modified Hodge test (MHT), modified carbapenem inactivation method (mCIM), and EDTA-CIM (eCIM) and PCR were performed to detect blaIMP, blaVIM and blaNDM producing MBL genes. Results VAP occurred in 172/353(48.7%), 23.3% had early-onset VAP and 76.7% had late-onset VAP. Males (69.2%) were found to suffer more from VAP. Prior antibiotic therapy, CPI>6, prior surgery and tracheostomy were associated with VAP. The mortality in VAP (58.1%) contrasted with non-VAP (40%). 99/169 (58.6%) Gram-negative isolates were resistant to carbapenems. Acinetobacter baumannii, Pseudomonas aeruginosa and Klebsiella pneumoniae were common pathogens found in late onset VAP, whereas K. pneumoniae, A. baumannii and Staphylococcus aureus were common in early onset VAP. The PCR results detected blaNDM in 37/172(21.5%) and blaVIM in 30/172(17.4%); 15/172(8.7%) isolates carried both genes. Conclusion The blaNDM-1 and blaVIM genes are the main antibiotic-resistance genes that induce resistance patterns to carbapenems in VAP, highlighting CRE strains of potential public health concern and therapeutic challenge. Diagnostic laboratories in India must get on high caution for early MBL detection as it may limit the wide dispersal of MBL genes.

scholarly journals Spectrum of Early Onset and Late Onset Ventilator Associated Pneumonia (VAP) in a Tertiary Care Hospital of Bangladesh: A Prospective Cohort Study

2015 ◽  
Vol 3 (1) ◽  
pp. 9-13 ◽  
Author(s):  
Uzzwal Kumar Mallick ◽  
Mohammad Omar Faruq ◽  
ASM Areef Ahsan ◽  
Kaniz Fatema ◽  
Fatema Ahmed ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Critically Ill ◽  
Critically Ill Patients ◽  
Early Onset ◽  
Prospective Cohort ◽  
Tertiary Care Hospital ◽  
Late Onset ◽  
Tertiary Care ◽  
Ventilator Associated Pneumonia ◽  
Care Hospital

Objective : To compare the outcome of critically ill patients developing early onset Ventilator-associated pneumonia (VAP) occurring within 96 h of ICU admission and late onset VAP occurring after 96 h of ICU admission in critically ill patients admitted in the ICU of BIRDEM General Hospital of Bangladesh.Study Design: Prospective cohort study.Material and Methods: Study data obtained over a period of 24 months (July 2012 - June 2014) in the ICU of a tertiary care hospital was prospectively analyzed. Subjects were classified by ventilator status: early onset VAP (< 96 hrs of mechanical ventilation) or late-onset VAP (?96 hrs of mechanical ventilation). Baseline demographics and bacterial etiology were analyzed according to the spectrum of status of VAP.Results: The incidence of VAP was 35.73 per 1,000 ventilator days. In our study 52% of the cases were early-onset VAP, while 48% were late-onset VAP. Acinetobacter was the commonest organism isolated from late-onset VAP (p = 0.029) while Pseudomonas was the commonest isolates obtained from early-onset VAP (p = 0.046). Klebsiella, MRSA and E. coli were almost identically distributed between groups (p > 0.05). There is significant difference of sensitivity pattern of Acinetobacter baumannii and pseudomonas aeruginosa in both early and late-onset VAP (p=0.01). The overall mortality rate in our study was 44%. The mortality was significantly higher in the late-onset VAP (62.5%) than that in the early-onset VAP (26.9%) (p=0.011).Conclusion: From this study we conclude that late-onset VAP had poor prognosis in terms of mortality as compared to the early-onset type. The higher mortality in the late-onset VAP could be attributed to older age, higher co-morbidities like diabetes mellitus, COPD and CKD. The findings are similar to findings of other international studiesBangladesh Crit Care J March 2015; 3 (1): 9-13

Epidemiology and clinical outcome of ventilator-associated events at a tertiary care hospital from North India

2020 ◽  
pp. 004947552098245
Author(s):  
Pooja Kumari ◽  
Priya Datta ◽  
Satinder Gombar ◽  
Deepak Sharma ◽  
Jagdish Chander
Keyword(s):  
Mechanical Ventilation ◽  
Tertiary Care Hospital ◽  
Late Onset ◽  
Tertiary Care ◽  
Control Measures ◽  
North India ◽  
Ventilator Associated Pneumonia ◽  
Care Hospital ◽  
Infection Control Measures ◽  
Utilisation Rate

The aim of our study was to determine the incidence, microbiological profile, risk factors and outcomes of patients diagnosed with ventilator-associated events in our tertiary care hospital. In this prospective study, intensive care patients put on mechanical ventilation for >48 h were enrolled and monitored daily for ventilator-associated event according to Disease Centre Control guidelines. A ventilator-associated event developed in 33/250 (13.2%); its incidence was 3.5/100 mechanical ventilation days. The device utilisation rate was 0.86, 36.4% of patients had early and 63.6% late-onset ventilator-associated pneumonia whose most common causative pathogen was Acinetobacter sp. (63.6%). Various factors were significantly associated with a ventilator-associated event: male gender, COPD, smoking, >2 underlying diseases, chronic kidney disease and elevated acute physiological and chronic health evaluation II scores. Therefore, stringent implementation of infection control measures is necessary to control ventilator-associated pneumonia in critical care units.

Risk Factors for Ventilator-associated Pneumonia by Pseudomonas aeruginosa  in Presence of Recent Antibiotic Exposure

2006 ◽  
Vol 105 (4) ◽  
pp. 709-714 ◽  
Author(s):  
Jordi Rello ◽  
Camilla Allegri ◽  
Alejandro Rodriguez ◽  
Loreto Vidaur ◽  
Gonzalo Sirgo ◽  
...  
Keyword(s):  
Risk Factors ◽  
Pseudomonas Aeruginosa ◽  
Relative Risk ◽  
Confidence Interval ◽  
Early Onset ◽  
Late Onset ◽  
Interquartile Range ◽  
Ventilator Associated Pneumonia ◽  
Antibiotic Exposure ◽  
Retrospective Case

Background To facilitate the decision-making process for therapy and prevention of ventilator-associated pneumonia (VAP) in patients undergoing recent antibiotic exposure, this study investigated whether the development of VAP episodes caused by Pseudomonas aeruginosa or other pathogens are related to different risk factors, thereby distinguishing two risk population for this serious complication. Methods A 5-year retrospective case-control observational study was conducted. Cases of VAP caused by P. aeruginosa were compared with those caused by other pathogens. Univariate and multivariate analysis was performed using SPSS 11.0 software (SPSS Inc., Chicago, IL). Results Two groups were identified: P. aeruginosa (group P) was isolated in 58 (63.7%) episodes, and 33 episodes served as controls (group C), after a median of 12 days (interquartile range, 4-28 days) and 9 days (interquartile range, 3-12.5 days) of mechanical ventilation, respectively. P. aeruginosa was identified in 34.7% of episodes with early-onset pneumonia and in 73.5% with late-onset pneumonia. In a logistic regression analysis, P. aeruginosa was independently associated with duration of stay of 5 days or longer (relative risk = 3.59; 95% confidence interval, 1.04-12.35) and absence of coma (relative risk = 8.36; 95% confidence interval, 2.68-26.09). Risk for pathogens different from P. aeruginosa (group C) in early-onset pneumonia associated with coma was estimated to be 87.5%. Conclusions Risk factors in episodes under recent antibiotic treatment caused by P. aeruginosa or other microorganism are not the same, a fact that could have implications for preventive and therapeutic approaches for this infection.

scholarly journals A comparative study on prevention of ventilator associated pneumonia using endotracheal tube with or without intermittent subglottic secretion drainage device

2018 ◽  
Vol 6 (1) ◽  
pp. 7-15
Author(s):  
Mohammad Asaduzzaman ◽  
Mohammad Omar Faruq ◽  
ASM Areef Ahsan ◽  
Kaniz Fatema ◽  
Fatema Ahmed ◽  
...  
Keyword(s):  
Endotracheal Tube ◽  
Primary Outcome ◽  
Late Onset ◽  
Clinical Suspicion ◽  
Ventilator Associated Pneumonia ◽  
Quantitative Culture ◽  
Subglottic Secretion ◽  
Drainage Device ◽  
Subglottic Secretion Drainage ◽  
Substantial Morbidity

Context: Ventilator-associated pneumonia (VAP) causes substantial morbidity and mortality. The influence of intermittent subglottic secretion drainage (SSD) in preventing VAP has been supported by literature studies.Objective: To find out the effectiveness of subglottic secretion drainage (SSD) on prevention of ventilator associated pneumonia (VAP) using endotracheal tube with subglottic secretion drainage (ETT-SSD).Methodology: This study was carried out in the 10 beded medical-care Intensive Care Unit (ICU) of BIRDEM Hospital, Dhaka over a period of one and half year, enrolling 48 subjects. Patients expected to require mechanical ventilation (MV) for more than >48 hrs were randomly assigned to one of two groups: one was ventilated with ETT-SSD and the other with conventional endotracheal tube (ETT-C).Results: Primary outcome was the overall incidence of VAP based on quantitative culture of distal pulmonary samplings performed after each clinical suspicion. Other outcomes included incidence of early and late onset VAP, duration of MV, duration of ICU stay and in hospital mortality. Microbiologically confirmed VAP occurred in 23 patients, 6 of 24 (25%) in the SSD group and 17 of 24 (70.83%) in the control group.Conclusion: The use of an ETT with intermittent SSD in a patient on MV helps to prevent ventilator associated pneumonia.Bangladesh Crit Care J March 2018; 6(1): 7-15

Diagnosis of Ventilator-associated Pneumonia 

1997 ◽  
Vol 87 (2) ◽  
pp. 268-276 ◽  
Author(s):  
Laurent Papazian ◽  
Amapola Autillo-Touati ◽  
Pascal Thomas ◽  
Fabienne Bregeon ◽  
Louise Garbe ◽  
...  
Keyword(s):  
Mechanical Ventilation ◽  
Bronchoalveolar Lavage ◽  
Lung Tissue ◽  
Sampling Technique ◽  
Sampling Techniques ◽  
Ventilator Associated Pneumonia ◽  
Direct Examination ◽  
Gram Staining ◽  
Cell Counts ◽  
Sampling Procedures

Background Ventilator-associated pneumonia (VAP) requires early diagnosis and adequate antibiotic therapy. The aim of this prospective postmortem study was to assess the accuracy of direct examination and quantification of intracellular organisms (ICO) for the diagnosis of VAP. Methods Total and differential cell counts were performed on fluids recovered using nonbronchoscopic sampling techniques (blind bronchial sampling [BBS], mini-bronchoalveolar lavage [mini-BAL]) and from bronchoalveolar lavage (BAL) performed during fiberscopy. These 3 sampling techniques were done within 15 min of death without discontinuing mechanical ventilation. Quantification of ICO was performed on each sample recovered from the various sampling procedures. Gram reaction and morphology of bacteria were evaluated on Gram smears. Results The results of each technique were compared with histology and culture of lung tissue specimens obtained by surgical pneumonectomies in 28 patients who died after at least 72 h of mechanical ventilation. Histology was positive in 13 patients and negative in 15 patients. When only VAP with positive lung culture was considered (histologic signs of bronchopneumonia plus positive lung tissue culture), the sensitivity of Gram staining on BAL, mini-BAL, and BBS was 56%, 44%, and 56%, respectively. If all samples were considered, the sensitivity and the specificity of the determination of the percentage of ICO were low (less than 70%) whatever the sampling technique. Conclusions For initial therapeutic guidance, direct examination and presence of ICO do not contribute for establishing the diagnosis of VAP, essentially because of a lack of sensitivity. However, when positive, Gram staining can obviously guide initial antibiotherapy.

scholarly journals Clinicobacteriological profile, antibiotic sensitivity patterns and mortality of neonatal sepsis in a tertiary care hospital in Kashmir, Jammu and Kashmir, India

2019 ◽  
Vol 6 (3) ◽  
pp. 917
Author(s):  
Gh Rasool Wani ◽  
Nazir Ahmed ◽  
Mohd Irshad ◽  
Mohd Ashraf ◽  
Bashir Ahmed Teli
Keyword(s):  
Blood Culture ◽  
Neonatal Mortality ◽  
Neonatal Sepsis ◽  
Early Onset ◽  
Late Onset ◽  
Antibiotic Sensitivity ◽  
Government Medical College ◽  
Gram Negative ◽  
Medical College ◽  
Early Onset Sepsis

Background: Neonatal sepsis refers to generalized bacterial blood stream infection in first 28 days of life documented by positive blood cultures. It is one of leading causes of neonatal mortality. Objectives was to study clinicobacteriological, antibiotic sensitivity patterns and mortality of neonatal sepsis.Methods: This prospective study was conducted in the Department of Pediatrics of Government Medical College Srinagar in collaboration with Department of Microbiology of same medical college after ethical clearance from ethical committee of Government Medical College Srinagar. One hundred (100) neonates out of 731 neonates admitted between octomber2007 and September 2008 with signs and symptoms of neonatal sepsis were included in our study by random sampling method. After history, examination and laboratory investigation blood culture results were analyzed by standard statistical methods.Results: The blood culture was positive in 40% of neonates. Fifty one (51) neonates were males while as 49 were females. Sixty three (63) neonates had late onset of sepsis while as 37 had early onset sepsis. The positive  blood culture was more common in males, late onset sepsis, babies born in rural areas, home born, vaginal births, preterm and other  low birth weight neonates .The gram negative isolates were most common followed by positive ones .The best sensitivity of gram negative isolates was to ciprofloxacin followed by amikacin and cephalosporins while as gram positive isolates were sensitive to imipenum followed by vancomycin. Pseudomonas was most responsive to pipercillin +tazobactum combination. The neonatal mortality was 35% being higher in early onset sepsis and low birth weights.Conclusions: This study depicts a high rate of neonatal sepsis, mainly caused by gram negative organisms followed by gram positive organisms with rising drug resistance that could bear far reaching implications to the times to come, mandating the implementation of sepsis preventive measures and administration of specific antibiotics.

scholarly journals A study on poor prognostic factors associated with ventilator associated pneumonia at a tertiary care hospital

2020 ◽  
Vol 7 (6) ◽  
pp. 906
Author(s):  
Raveendra K. R. ◽  
Suraj S. Hegde
Keyword(s):  
Mechanical Ventilation ◽  
Prognostic Factors ◽  
Late Onset ◽  
Tertiary Care ◽  
Ventilator Associated Pneumonia ◽  
Care Hospital ◽  
Cross Sectional ◽  
Beta Lactamases ◽  
Factors Associated ◽  
Hospital Acquired

Background: Ventilator associated pneumonia (VAP) is a hospital acquired infection (HAI) seen among critically ill patients, on mechanical ventilation, due to various causes in intensive care units (ICUs). It is associated with increased morbidity and mortality which increases the cost of health care. The aim of this study was to determine the poor prognostic factors associated with VAP.Methods: In this cross-sectional prospective study,40 patients who developed features of ventilator associated pneumonia on a platform of mechanical ventilator for >48 hrs in ICU were included in the study. VAP was then diagnosed based on clinical pulmonary infection scoring system (CPIS) with a score of >=6. All patients were evaluated and correlated with different parameters for the treatment and outcome.Results: Most of the patients had late onset VAP (60.7%) with average number of days being around 8 days. Pseudomonas, Acinetobacter, Enterobacteriacea, Staphylococcus aureus were commonly isolated organisms. Polymicrobial infections were not detected. Antibiotics like colistin, tigecycline and beta-lactamases are the most commonly effective antibiotics. Of the 40 VAP patients,20 patients survived and  20 died with protocol line of treatment. Following poor prognostic factors were identified-Early onset VAP (42.5%), elderly patients (>65 years) (90%), Type 2 DM (80%), hypertension (70%), prior antibiotic therapy (65%), prolonged supine position (68%) and re-intubation (75%).Conclusions: Ventilator associated pneumonia is associated with a significant increase in length of stay in ICU, time of mechanical ventilation and different complications and certain risk factors further worsens the prognosis.

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