A multicenter prospective monitoring on incidences of ventilator-associated pneumonia in 46 hospitals in China / 中国感染控制杂志

Objective To explore the incidences of ventilator-associated pneumonia (VAP)in intensive care units (ICUs)in China.Methods From October 2013 to September 2014,46 hospitals in 12 provinces and cities were se-lected to participate in the study,all patients admitted to ICUs were included,the incidences of VAP were surveyed and compared with data from the U.S.National Healthcare Safety Network (NHSN).Results A total of 17 358 patients were surveyed,the total patient-days were 176 096 d,the total catheter-days were 91 448 d,813 patients developed VAP,the incidence of VAP was 8.89/1 000 catheter-days,VAP mainly occurred in general ICUs (76.74%);the incidences of VAP were varied with patients in different types of ICUs,ranging from 4.50/1 000 catheter-days to 32.79/ 1 000 catheter-days.Conclusion The incidence of VAP in patients in ICUs at 46 hospitals in China is significantly higher than that reported by NHSN,even higher than the P90 .

Perioperative antibiotic prophylaxis in colorectal surgery: an investigation of 2 465 cases / 中华外科杂志

<p><b>OBJECTIVE</b>To investigate the influence of changes in perioperative antibiotic prophylaxis (PAP) duration in colorectal surgery on surgical site infection (SSI).</p><p><b>METHODS</b>The data on PAP in April and October between 2011 and 2013 was collected from tertiary and secondary hospitals in Shanghai. Prevalence of SSI rates over the same period was compared.</p><p><b>RESULTS</b>A total of 2 465 cases of colorectal surgeries were studied over the three-year period, including 1 784 cases in tertiary hospitals and 681 cases in secondary hospitals. In 940 surgical operations, PAP duration were within 72 hours, accounting for 38.1% of all cases. 48.0% of the operations in 2013 had a PAP within 72 hours, which is significantly higher than that of 20.8% seen in 2011 (χ(2) = 129.986, P = 0.000). In 2013, 53.5% of the all procedures in tertiary hospitals had PAP ≤ 72 hours, compared with 35.5% in secondary hospitals over the same period (χ(2) = 22.714, P = 0.000). Combined uses of nitroimidazoles, with an effect of anti-anaerobic, were used much more commonly in tertiary (76.0%) than in secondary hospitals (41.4%) (χ(2) = 267.820, P = 0.000). The usage of cephamycin were higher in secondary (20.6%) than in tertiary hospitals (4.7%) (χ(2) = 149.865, P = 0.000). According to the investigations by SICC on prevalence of healthcare-associated infections between 2011 and 2013, colorectal surgeries have an average SSI rate of 2.0%. Stratified data showed that the rate of PAP ≤ 72 hours increase from 23.6% in 2011 to 45.8% in 2013 over the same period. However, the SSI rate did not show a significant change (1.9% in 2011, 1.7% in 2013). There was no linearly dependent between the two rates (r = 0.015, P = 0.990).</p><p><b>CONCLUSIONS</b>The proportion of rational PAP of colorectal surgeries in Shanghai has increased. Perioperative antibiotic prophylaxis duration decreased, while SSI rates over the same period did not increase.</p>

Genotyping of carbapenem-resistant Acinetobacter baumannii acquired from environment and patients in intensive care units by REP-PCR / 中华微生物学和免疫学杂志

Objective To investigate the genotype of carbapenem-resistant Acinetobacter baumannii(CRAB) acquired from intensive care units (ICUs) environment in Shanghai hospitals and to evaluate the gene homology of CRAB isolated from patients and environment in ICUs in Shanghai hospital.Methods Sixty-one CRAB isolated from ICUs environment in Shanghai hospitals and 14 strains isolated from ICUs patients in S hospital were typed by REP-PCR based DiversiLab system.Results There were 7 types of the CRAB isolated from ICUs environment in Shanghai hospitals.Type G1 was the dominant type,accounting for 75.4％ of all CRAB,mainly in 13 hospitals in Shanghai.The percentage of the 7 types CRAB strains were 75.4％,13.1％,3.3％,1.6％,1.6％,3.3％ and 1.6％,respectively.Except for 1 strain of type G6 isolated in D hospital,type G1 CRAB was identified in every hospital which was isolated CRAB.There were 25 strains isolated from patients and environment in S hospital ICUs,which were divided into 4 types.Type G1 was the dominant type mainly distributed in SICU and CICU,including 9 from patients and 8 from environment.The distribution diagram of environmental and patients' strains indicated that the patients in adjacent bed isolated G1 CRAB in SICU and a patient in CICU and its surrounding environment both isolated G1 CRAB.Conclusion Type G1 is the dominant type in ICUs environment in Shanghai hospitals.There are inter-hospital transmission of CRAB in ICUs environment and highly homology of CRAB isolated from patients and environment in ICUs in Shanghai hospitals.Active surveillance of infection and colonization by CRAB,together with implementation of enhanced control strategies should be taken to eradicate CRAB in ICU environment.