Philip Zachariah

Compliance with prevention practices and their association with central line–associated bloodstream infections in neonatal intensive care units

BACKGROUND Bundles and checklists have been shown to decrease the rates of central line-associated bloodstream infections (CLABSIs), but implementation of these practices and association with CLABSI rates have not been described nationally. We describe implementation and levels of compliance with preventive practices in a sample of US neonatal intensive care units (NICUs) and assess their association with CLABSI rates. METHODS An online survey assessing infection prevention practices was sent to hospitals participating in National Healthcare Safety Network CLABSI surveillance in October 2011. Participating hospitals permitted access to their NICU CLABSI rates. Multivariable regressions were used to test the association between compliance with NICU-specific CLABSI prevention practices and corresponding CLABSI rates. RESULTS Overall, 190 level II/III and level III NICUs participated. The majority of NICUs had written policies (84%-93%) and monitored compliance with bundles and checklists (88%-91%). Reporting ≥95% compliance for any of the practices ranged from 50%-63%. Reporting of ≥95% compliance with insertion checklist and assessment of daily line necessity were significantly associated with lower CLABSI rates (P < .05). CONCLUSIONS Most of the NICUs in this national sample have instituted CLABSI prevention policies and monitor compliance, although reporting compliance ≥95% was suboptimal. Reporting ≥95% compliance with select CLABSI prevention practices was associated with lower CLABSI rates. Future studies should focus on identifying and improving compliance with effective CLABSI prevention practices in neonates.

The association of state legal mandates for data submission of central line-associated bloodstream infections in neonatal intensive care units with process and outcome measures.

OBJECTIVE To determine the association between state legal mandates for data submission of central line-associated bloodstream infections (CLABSIs) in neonatal intensive care units (NICUs) with process and outcome measures. DESIGN Cross-sectional study. PARTICIPANTS National sample of level II/III and III NICUs participating in National Healthcare Safety Network (NHSN) surveillance. METHODS State mandates for data submission of CLABSIs in NICUs in place by 2011 were compiled and verified with state healthcare-associated infection coordinators. A web-based survey of infection control departments in October 2011 assessed CLABSI prevention practices, ie, compliance with checklist/bundle components (process measures) in ICUs including NICUs. Corresponding 2011 NHSN NICU CLABSI rates (outcome measures) were used to calculate standardized infection ratios (SIRs). Association between mandates and process and outcome measures was assessed by multivariable logistic regression. RESULTS Among 190 study NICUs, 107 (56.3%) were located in states with mandates, with mandates in place >3 years in 52 (49%). More NICUs in states with mandates reported ≥95% compliance to at least 1 CLABSI prevention practice (52.3%-66.4%) than NICUs in states without mandates (28.9%-48.2%). Mandates were predictors of ≥95% compliance with all practices (odds ratio, 2.8; 95% confidence interval, 1.4-6.1). NICUs in states with mandates reported lower mean CLABSI rates in the ≤750-g birth weight group (2.4 vs 5.7 CLABSIs/1,000 central line-days) but not in others. Mandates were not associated with SIR <1. CONCLUSIONS State mandates for NICU CLABSI data submission were significantly associated with ≥95% compliance with CLABSI prevention practices, which declined with the duration of mandate but not with lower CLABSI rates.

Community ‐and hospital laboratory‐based surveillance for respiratory viruses

Traditional surveillance for respiratory viruses relies on symptom detection and laboratory detection during medically attended encounters for acute respiratory infection/influenza‐like illness (ARI/ILI). Ecological momentary reporting using text messages is a novel method for surveillance. This study compares respiratory viral activity detected through longitudinal community‐based surveillance using text message responses for sample acquisition and testing to respiratory viral activity obtained from hospital laboratory data from the same community. We demonstrate a significant correlation between community‐ and hospital laboratory‐based surveillance for most respiratory viruses, although the relative proportions of viruses detected in the community and hospital differed significantly.

Vaccination Rates for Measles, Mumps, Rubella, and Influenza Among Children Presenting to a Pediatric Emergency Department in New York City

We compared measles, mumps, rubella (MMR), and influenza vaccination rates of children presenting to a Pediatric Emergency Department (PED) in New York City with rates from national assessments. MMR and influenza vaccination rates in this PED population were generally comparable to community rates, but lower than Healthy People 2020 targets.

A multi‐institutional analysis of children on long‐term non‐invasive respiratory support and their outcomes

To characterize a multi‐institutional cohort of children with chronic respiratory failure that use long‐term, non‐invasive respiratory support, perform a time‐to‐event analysis of transitions to transtracheal ventilation and identify factors associated with earlier transition to transtracheal ventilation.

Surgical Antibiotic Prophylaxis and Risk for Postoperative Antibiotic-Resistant Infections

BACKGROUND Antibiotic-resistant infections have high rates of morbidity and mortality, and exposure to antibiotics is the crucial risk factor for development of antibiotic resistance. If surgical antibiotic prophylaxis (SAP) increases risk for antibiotic-resistant infections, prophylaxis may cause net harm, even if it decreases overall infection rates. STUDY DESIGN This retrospective cohort study included adults who underwent elective surgical procedures and developed infections within 30 postoperative days. Procedures from multiple disciplines were included if SAP was considered discretionary by current guidelines. Postoperative antibiotic-resistant infections were defined as positive culture results from any site within 30 postoperative days, showing intermediate or nonsusceptibility across 1 or more antibiotic classes. Surgical antibiotic prophylaxis included use of antibiotics within any class and at any dose from 1 hour before first incision until the end of the operation. RESULTS Among 689 adults with postoperative infections, 338 (49%) had postoperative resistant infections. Use of SAP was not associated with postoperative antibiotic-resistant infections (odds ratio [OR] 0.99; 95% CI 0.67 to 1.46). This result remained robust when the SAP definition was extended to antibiotics given within 4 hours before first incision (OR 0.94; 95% CI 0.63 to 1.40) and when the follow-up window was narrowed to 14 days (OR 0.82; 95% CI 0.50 to 1.34). Previous antibiotic-resistant infections were associated with risk for postoperative antibiotic-resistant infections (OR 1.81; 95% CI 1.16 to 2.83). CONCLUSIONS Use of SAP was not associated with risk for postoperative antibiotic-resistant infections in a large cohort of patients with postoperative infections. This provides important reassurance regarding use of surgical antibiotic prophylaxis.

Electronic surveillance for catheter-associated urinary tract infections at a university-affiliated children's hospital.

We sought to describe the characteristics of catheter-associated urinary tract infections (CAUTIs) in a childrens hospital while demonstrating efficacy of electronic identification of CAUTIs. There were 25 CAUTIs identified over 24 months, with most (88%) occurring in the intensive care units (ICUs). The incidence of ICU CAUTIs decreased during the study period (P = .04). Concordance between electronic identification and validation by infection control staff was 83% and increased to 100% with correction of nursing documentation.

Epidemiology and Clinical Features of Human Coronaviruses in the Pediatric Population

Abstract Background The epidemiology and clinical features of human coronaviruses (HCoVs) in children are not fully characterized. Methods A retrospective study of children with HCoV detected by reverse-transcriptase polymerase chain reaction (RT-PCR) was performed for a community cohort and a children’s hospital in the same community from January 2013 to December 2014. The RT-PCR assay detected HCoV 229E, HKU1, NL63, and OC43 in nasal swabs from symptomatic children ≤18 years. Factors associated with increased severity of illness in hospitalized children were assessed by multivariable logistic regression. Results Human coronavirus was detected in 261 children, 49 and 212 from the community and hospital, respectively. The distribution of HCoV types and seasonal trends were similar in the community and hospital. Community cases were older than hospitalized cases (median age, 4.4 versus 1.7 years, respectively; P < .01), and a minority of community cases (26.5%) sought medical attention. Among the hospitalized children with HCoV detected, 39 (18.4%) received respiratory support and 24 (11.3%) were admitted to the pediatric intensive care unit (PICU). Age <2 years (odds ratio [OR] = 5.0; 95% confidence interval [CI], 1.9–13.1) and cardiovascular (OR = 3.9; 95% CI, 1.6–9.5), genetic/congenital (OR = 2.8; 95% CI, 1.1–7.0), and respiratory chronic complex conditions ([CCCs] OR = 4.5; 95% CI, 1.7–12.0) were associated with receiving respiratory support. Genetic/congenital (OR = 2.8; 95% CI, 1.1–7.4) CCCs were associated with PICU admission. Severity of illness was similar among hospitalized children with different HCoV types. Conclusions Children in the community with HCoV detected generally had mild illness as demonstrated by few medically attended cases. In hospitalized children, young age and CCCs, but not HCoV type, were associated with increased severity of illness.

The local hospital milieu and healthcare-associated vancomycin-resistant enterococcus acquisition

BACKGROUND Vancomycin-resistant enterococcus (VRE) causes 4% of all healthcare-associated infections in the USA. The process by which the local hospital milieu contributes to VRE acquisition is not fully understood. AIM To determine the importance of specific factors within the local hospital environment for healthcare-associated VRE acquisition. METHODS This retrospective cohort study included patients admitted to six intensive care units at an academic medical centre from January 2012 to December 2016 with negative rectal VRE cultures on admission. VRE acquisition was defined as a positive surveillance swab performed at any time after the initial negative swab during the index hospitalization. The exposures of interest were VRE colonization pressure, VRE importation pressure, and use of vancomycin. Multivariable Cox proportional hazards modelling was performed, with patients followed until VRE acquisition, death, or for up to 30 days. FINDINGS Of 8485 patients who were initially VRE negative, 161 patients acquired VRE. On univariate analysis, patients with VRE acquisition were more likely to have received vancomycin, to have had a neighbouring patient who received vancomycin, to have high VRE importation pressure, or to have high VRE colonization pressure. On multivariable analysis, only high VRE colonization pressure was an independent predictor of VRE acquisition (adjusted hazard ratio: 1.79; 95% confidence interval: 1.19-2.70). CONCLUSION VRE colonization pressure was the most important risk factor for healthcare-associated VRE acquisition, regardless of VRE importation pressure. Interventions seeking to reduce VRE acquisition should focus on minimizing transmission between patients with known VRE and the local hospital environment.

Seasonality and clinical impact of human parainfluenza viruses

Widespread availability of rapid diagnostic testing for respiratory viruses allows more in‐depth studies of human parainfluenza viruses (HPIV).