Central line-associated bloodstream infection in children: an update on treatment

Effect of Targeted Single-Dose Antibiotics to Reduce the Occurrence of Pediatric Central Line-Associated Bloodstream Infections Post Alteplase Administration

OBJECTIVE

Previous studies have shown an association between alteplase for line clearance and central line-associated bloodstream infections (CLABSIs). The objective of this study was to evaluate the use of post-alteplase antibiotics as a CLABSI reduction strategy in pediatric intensive care unit (PICU) patients.

METHODS

This was a single center, retrospective, observational study evaluating PICU patients from -January 1, 2014, through August 1, 2021, conducted at a tertiary academic PICU. Included in this study were critically ill patients who had 1 or more central venous lines (CVLs) requiring alteplase for line clearance. The primary objective was incidence of CLABSI occurrence post alteplase administration for CVL clearance, with or without targeted single-dose antibiotics (piperacillin-tazobactam or vancomycin) post alteplase. Secondary outcomes included evaluation of total alteplase administrations and risk factors associated with CLABSI occurrence.

RESULTS

Two hundred fifty patients were included, with 156 receiving alteplase only, 82 piperacillin--tazobactam, and 12 vancomycin, and with median ages of 2.8, 3.8, and 3.8 years, respectively. Seven -CLABSIs occurred in the alteplase-only group, with 0 incidences in both the piperacillin-tazobactam (exact OR, 0.12; exact 95% CI, <0.01-0.59; p < 0.01) and vancomycin (exact OR, 1.20; exact 95% CI, 0.03-9.80; p = 1.00) groups. Patients in the piperacillin-tazobactam group achieved statistical significance for CLABSI risk factors that may benefit by decreasing CLABSI incidence (p values <0.01-0.02).

CONCLUSIONS

Alteplase use has been associated with CLABSIs. Providing a single dose of post-alteplase antibiotics targeting the most likely site-specific pathogens may reduce the incidence of CLABSIs.

End-organ damage from neonatal invasive fungal infection: a 14-year retrospective study from a tertiary center in China

BACKGROUND

Invasive fungal infection (IFI) has become an increasing problem in NICU neonates, and end-organ damage (EOD) from IFI is one of the leading causes of morbidity and mortality in neonates. This study was conducted to summarize clinical data on epidemiology, risk factors, causative pathogens, and clinical outcomes of IFI-associated EOD among neonates in a center in China for the sake of providing references for prevention and treatment of fungal infections in neonates in future.

METHODS

The clinical data of IFI neonates who received treatment in a tertiary NICU of China from January 2009 to December 2022 were retrospectively analyzed, including causative pathogens and the incidence of EOD. The neonates were divided into EOD group and non-EOD (NEOD) group. The general characteristics, risk factors and clinical outcomes of the two groups were compared.

RESULTS

Included in this study were 223 IFI neonates (137 male and 86 female) with a median gestational age (GA) of 30.71 (29,35) weeks and a median birth weight (BW) of 1470 (1120,2150) g. Of them, 79.4% were preterm infants and 50.2% were born at a GA of ≥ 28, <32 weeks, and 37.7% with BW of 1000-1499 g. Candida albicans (C. albicans) was the most common Candida spp. in these neonates, accounting for 41.3% of all cases, followed by C. parapsilosis (30.5%) and C. glabrata (7.2%). EOD occurred in 40 (17.9%) of the 223 cases. Fungal meningitis was the most common EOD, accounting for 13.5% of the 40 EOD cases. There was no significant difference in the premature birth rate, delivery mode, GA and BW between EOD and NEOD groups, but the proportion of male infants with EOD was higher than that without. There was no significant difference in antenatal corticosteroid use, endotracheal intubation, invasive procedures, use of antibiotics, total parenteral nutrition, blood transfusion, postnatal corticosteroid use, fungal prophylaxis and the incidence of necrotizing enterocolitis between the two groups, but the proportion of C. albicans infection cases in EOD group was higher than that in NEOD group (57.5% vs. 37.7%). Compared with NEOD group, the proportion of cured or improved infants in EOD group was significantly lower (P < 0.05), and the number of infants who died or withdrew from treatment was larger (P < 0.05).

CONCLUSIONS

Our retrospective study showed that preterm infants were prone to fungal infection, especially very preterm infants. C. albicans was the most common Candida spp. for IFI, and was a high-risk factor for EOD. EOD can occur in both full-term and premature infants, so the possibility of EOD should be considered in all infants with IFI.

Bloodstream Infections in Children Hospitalized for Influenza, the Canadian Immunization Monitoring Program Active

BACKGROUND

We aimed to estimate the proportion of children hospitalized for influenza whose illness was complicated by bloodstream infection, describe their clinical course, and identify the factors associated with bloodstream infection.

METHODS

We performed active surveillance for laboratory-confirmed influenza hospitalizations among children ≤16 years old at the 12 Canadian Immunization Monitoring Program Active hospitals, from the 2010-2011 to 2020-2021 influenza seasons. Factors associated with bloodstream infection were identified using multivariable logistic regression analyses.

RESULTS

Among 9179 laboratory-confirmed influenza hospital admissions, bloodstream infection occurred in 87 children (0.9%). Streptococcus pyogenes (22%), Staphylococcus aureus (18%) and Streptococcus pneumoniae (17%) were the most common bloodstream infection pathogens identified. Children with cancer [adjusted odds ratio (aOR): 2.78; 95% confidence interval (CI): 1.23-5.63], a laboratory-confirmed nonbloodstream bacterial infection (aOR: 14.1; 95% CI: 8.04-24.3) or radiographically-confirmed pneumonia (aOR: 1.87; 95% CI: 1.17-2.97) were more likely to experience a bloodstream infection, whereas children with chronic lung disorders were less likely (aOR: 0.41; 95% CI: 0.19-0.80). Disease severity markers such as intensive care unit admission (aOR: 2.11; 95% CI: 1.27-3.46), mechanical ventilation (aOR: 2.84; 95% CI: 1.63-4.80) and longer hospital length of stay (aOR: 1.02; 95% CI: 1.01-1.03) were associated with bloodstream infection. Bloodstream infection also increased the odds of death (aOR: 13.0; 95% CI: 4.84-29.1) after adjustment for age, influenza virus type and the presence of any at-risk chronic condition.

CONCLUSIONS

Bloodstream infections, although infrequent, are associated with intensive care unit admission, mechanical ventilation, increased hospital length of stay and in-hospital mortality, thus requiring increased levels of care among pediatric influenza hospitalizations.

Formative Evaluation of CLABSI Adoption and Sustainment Interventions in a Pediatric Intensive Care Unit

Background

Pediatric patients require central venous catheters to maintain adequate hydration, nutritional status, and delivery of life-saving medications in the pediatric intensive care unit. Although central venous catheters provide critical medical therapies, their use increases the risk of severe infection, morbidity, and mortality. Adopting an evidence-based central line-associated bloodstream infection (CLABSI) bundle to guide nursing practice can decrease and sustain low CLABSI rates, but reliable and consistent implementation is challenging. This study aimed to conduct a mixed-methods formative evaluation to explore CLABSI bundle implementation strategies in a PICU.

Methods

The team used The Consolidated Framework for Implementation Research to develop the interview guide and data analysis plan.

Results

Facilitators and barriers for the CLABSI bundle occurred in four domains: inner setting, process, characteristics of individuals, and innovation characteristics in each cycle that led to recommended implementation strategy opportunities. The champion role was a major implementation strategy that facilitated the adoption and sustainment of the CLABSI bundle.

Conclusions

Implementation Science Frameworks, such as Consolidated Framework for Implementation Research (CFIR), can be a beneficial framework to guide quality improvement efforts for evidence-based practices such as the CLABSI bundle. Using a champion role in the critical care setting may be an important implementation strategy for CLABSI bundle adoption and sustainment efforts.

Central Venous Catheter-related Bloodstream Infections Caused by Enterobacterales in Pediatric Oncology Patients: Catheter Salvage or Removal

BACKGROUND

The aim was to determine whether salvage treatment with systemic antibiotics is a safe and effective strategy for Enterobacterales bloodstream infections (BSI) in pediatric oncology patients with a central venous catheter (CVC).

METHODS

A retrospective study was performed on oncology and stem cell recipient patients with a CVC and blood culture with Enterobacterales , at the Princess Máxima Centre for Pediatric Oncology, Utrecht, the Netherlands. Analyses were performed for all BSI and for episodes meeting central line-associated bloodstream infection (CLABSI) criteria. The cumulative incidence of an event (ie, removal, intensive care admission or death) was estimated after blood culture collection for episodes primarily treated with antibiotics. The effect of prognostic factors on the hazard of the event of interest was assessed by estimating a Cox proportional hazard regression model.

RESULTS

In total, 95 CVC-related Enterobacterales BSIs in 82 patients were included; 12 (13%) BSIs required immediate CVC removal and for 83 (87%) BSIs CVC salvage was attempted. The cumulative incidence of events at 60 days was 53.0% [95% confidence interval (CI): 41.7-63.1] for BSIs (n = 83), and 64.4% (95% CI: 48.3-76.7) for CLABSIs (n = 45). The events occurred after a median of 6 (Q1-Q3: 2-15) and 6 (Q1-Q3: 2-20) days for BSIs and CLABSIs, respectively. Intensive care admission after salvage treatment was required in 16% of the BSIs and CLABSIs, resulting in death in 5% and 2% of cases, respectively. No significant association between risk factors and events was found.

CONCLUSIONS

The cumulative incidence of an event at 60 days after salvage treatment for Enterobacterales CLABSIs and BSIs in pediatric oncology patients is high. Immediate CVC removal appears recommendable for this patient group.

Prediction of attributable mortality in pediatric patients with cancer admitted to the intensive care unit for suspected infection: A comprehensive evaluation of risk scores

OBJECTIVE

To evaluate the performance of existing sepsis scores for prediction of adverse outcomes in children with cancer admitted to the ICU with suspected sepsis.

DESIGN

Retrospective chart review using data available at 1, 6, 12, and 24 h after ICU admission to calculate the Pediatric Risk of Mortality 3 (PRISM-3), Pediatric Sequential Organ Failure Assessment (pSOFA), Paediatric Logistic Organ Dysfunction 2 (PELOD-2), and Quick Pediatric Sequential Organ Failure Assessment (qSOFA) scores. Area under the receiver operator characteristic curve (AUROC) was used to evaluate performance for prediction of attributable mortality. Sensitivity analyses included recalculation of scores using worst preceding values for each variable, excluding hematologic parameters, and prediction of alternative outcomes.

SETTING

St. Jude Children's Research Hospital, a pediatric comprehensive cancer center in the USA.

PATIENTS

Pediatric patients (<25 years of age) receiving conventional therapy for cancer admitted to the ICU with suspected sepsis between 2013 and 2019.

RESULTS

Of 207 included episodes of suspected sepsis, attributable mortality was 16 (7.7%) and all evaluated sepsis scores performed poorly (maximal AUROC of 0.73 for qSOFA at 1 and 24 h). Sensitivity analyses did not identify an alternative approach that significantly improved prediction.

CONCLUSIONS

Currently available sepsis scores perform poorly for prediction of attributable mortality in children with cancer who present to ICU with suspected sepsis. More research is needed to identify reliable predictors of adverse outcomes in this population.

Blood culture collection practices in NICU; A national survey

Background

Sepsis is the leading cause of mortality and morbidity in neonates. Blood cultures are the gold standard in diagnosing neonatal sepsis; however, there are currently no consensus guidelines for blood culture collection in neonates and significant practice variation exists in Neonatal Intensive Care Units (NICUs) globally.

Objective

To examine current practices in obtaining blood cultures in the evaluation of neonatal sepsis in NICUs across Canada.

Methods

A nine-item electronic survey was sent to each of the 29 level-3 NICUs in Canada, which are equipped to provide highly specialized care for newborns.

Results

Responses were received from 90% (26/29) of sites. Sixty-five percent (17/26) of sites have blood culture collection guidelines for the investigation of neonatal sepsis. Forty-eight percent (12/25) of sites routinely target 1.0 mL per culture bottle. In late-onset sepsis (LOS), 58% (15/26) of sites process one aerobic culture bottle, whereas four sites routinely add anaerobic culture bottles. In early-onset sepsis (EOS) in very low birth weight infants (BW <1.5 kg), 73% (19/26) of sites use umbilical cord blood, and 72% (18/25) use peripheral venipuncture. Two sites routinely collect cord blood for culture in EOS. Only one site applies the concept of differential time-to-positivity to diagnose central-line-associated bloodstream infection.

Conclusions

There is significant practice variation in methods used to obtain blood cultures in level-3 NICUs across Canada. Standardization of blood culture collection practices can provide reliable estimates of the true incidence of neonatal sepsis and help to develop appropriate antimicrobial stewardship strategies.

Bacteremia in Pediatric Liver Transplant Recipients

BACKGROUND

We aimed to determine the frequency of bacteremia, septic shock and bacterial meningitis in pediatric liver transplant recipients (pLTRs) in the outpatient setting and to identify clinical factors associated with bacteremia.

METHODS

Multicenter retrospective study of pLTRs evaluated in the emergency department or outpatient clinic between 2010 and 2018 for suspected infection, defined as fever ≥38 °C or a blood culture obtained. We excluded patients with nontransplant immunodeficiency, multiorgan transplants or intestinal failure. The primary outcome was bacteremia; secondary outcomes included fluid-refractory septic shock, bacterial meningitis and antibiotic resistance. The unit of analysis was the encounter.

RESULTS

A total of 151 children had 336 encounters for infection evaluation within 2 years of transplant. Of 307 (91.4%) encounters with blood cultures, 17 (5.5%) had bacteremia, with 10 (58.8%) occurring within 3 months of transplant. Fluid-refractory septic shock and bacterial meningitis occurred in 7 out of 307 (2.8%) and 0 out of 307 encounters, respectively. Factors associated with bacteremia included closer proximity to transplant (<3 months) [odds ratio (OR): 3.6; 95% confidence interval (CI): 1.3-9.8; P = 0.01], shorter duration of illness (OR: 4.3; 95% CI: 1.5-12.0; P < 0.01) and the presence of a central venous catheter (CVC) (OR: 12.7; 95% CI: 4.4-36.6; P < 0.01). However, 5 (29.4%) encounters with bacteremia had none of these factors. Among Gram-positive pathogens, 1 out of 7 (14.2%) isolates were resistant to vancomycin. Among Gram-negative pathogens, 3 out of 13 (23.1%) isolates were resistant to 3rd generation cephalosporins.

CONCLUSIONS

Bacteremia was an important cause of infection within 2 years of pLTR. Clinical factors increased the risk of bacteremia. Further, large sample studies should derive multivariable models to identify those at high and low risk of bacteremia to optimize antibiotic use.

High Rates of Central Venous Line Replacement or Revision in Children With Cancer at US Children's Hospitals

BACKGROUND

Most children with cancer utilize a central venous line (CVL) for treatment. Complications often necessitate early replacement, revision, or addition (RRA), but the rate of these procedures is not known. This study sought to determine rates of RRA in pediatric oncology patients, and associated risk factors.

MATERIALS AND METHODS

Data queried from the Pediatric Health Information System including patients ≤18 years old with malignancy and CVL placement. Analysis included: first CVL placement of the calendar year and subsequent procedures for 6 months thereafter.

RESULTS

A total of 6553 children met inclusion criteria (55.9% male, median age 6 years, interquartile range: 2 to 12). RRA within 6 months was required in 25.6% of patients, with 1.7% requiring 5 or more lines. Patients with Central Line-Associated Bloodstream Infection (CLABSI) were 2.78 times more likely to require RRA within 6 months of initial CVL placement, but accounted for only 16% of RRA patients. Factors associated with RRA were age below 1 year, CLABSI, hematologic malignancy, malnutrition, clotting disorder, deep vessel thromboembolism, and obesity. Patients with implantable ports as initial CVL (42%) were less likely to need RRA.

CONCLUSION

Twenty-five percent require at least 1 RRA within 6 months, with associated morbidity and costs. Though strongly associated, most revisions were not related to CLABSI episodes.

Central Venous Catheter Salvage in Ambulatory Central Line-Associated Bloodstream Infections

BACKGROUND

Guidelines for treatment of central line-associated bloodstream infection (CLABSI) recommend removing central venous catheters (CVCs) in many cases. Clinicians must balance these recommendations with the difficulty of obtaining alternate access and subjecting patients to additional procedures. In this study, we evaluated CVC salvage in pediatric patients with ambulatory CLABSI and associated risk factors for treatment failure.

METHODS

This study was a secondary analysis of 466 ambulatory CLABSIs in patients <22 years old who presented to 5 pediatric medical centers from 2010 to 2015. We defined attempted CVC salvage as a CVC left in place ≥3 days after a positive blood culture result. Salvage failure was removal of the CVC ≥3 days after CLABSI. Successful salvage was treatment of CLABSI without removal of the CVC. Bivariate and multivariable logistic regression analyses were used to test associations between risk factors and attempted and successful salvage.

RESULTS

A total of 460 ambulatory CLABSIs were included in our analysis. CVC salvage was attempted in 379 (82.3%) cases. Underlying diagnosis, CVC type, number of lumens, and absence of candidemia were associated with attempted salvage. Salvage was successful in 287 (75.7%) attempted cases. Underlying diagnosis, CVC type, number of lumens, and absence of candidemia were associated with successful salvage. In patients with malignancy, neutropenia within 30 days before CLABSI was significantly associated with both attempted salvage and successful salvage.

CONCLUSIONS

CVC salvage was often attempted and was frequently successful in ambulatory pediatric patients presenting with CLABSI.

Challenges of Antibiotic Stewardship in the Pediatric and Neonatal Intensive Care Units

The goals of antimicrobial stewardship programs (ASPs) are to optimize antimicrobial prescribing habits in order to improve patient outcomes, reduce antimicrobial resistance, and reduce hospital costs. Multiple society-endorsed guidelines and government policies reinforce the importance of ASP implementation. Effective antimicrobial stewardship can impact unique patients, hospitals, and societal antibiotic-resistance burden. The role and subsequent success of these programs has largely been reported in the adult population. Pediatric and neonatal intensive care units present unique challenges for traditional antimicrobial stewardship approaches. The purpose of this review article is to explore the challenges of appropriate antibiotic use in the pediatric and neonatal intensive care units and to summarize strategies ASPs can use to overcome these challenges. These problems include non-specific disease presentations, limited evidence for definitive treatment durations in many pediatric infections, fewer pediatric-trained infectious disease physicians, and applicability of intensive laboratory obtainment, collection, and interpretation. Additionally, many ASP implementation studies evaluating the efficacy of ASPs exclude the PICU and NICU. Areas of focus for pediatric ASPs should likely include appropriate antibiotic initiation, appropriate antibiotic duration, and appropriate antibiotic de-escalation.

A Rare Case of Pediatric Central Venous Catheter-Related Bloodstream Infection With Kocuria Varians

Cases of central line blood infections caused by Kocuria spp. are limited in the literature. Most of those infections have been detected in hospitalized patients with severe underlying disease or those with implanted catheters or with suppressed immunity. They are usually non-pathogenic in humans, but few cases of opportunistic infections in adult and pediatric populations have been reported. They can be serious in certain occasions. So treating physicians should not underestimate or ignore the significance of the infection with these bacteria.

We report a rare case of central venous catheter (CVC) infection associated with Kocuriavarians, which was successfully treated with CVC salvage.

Predicting outcomes in central venous catheter salvage in pediatric central line-associated bloodstream infection

OBJECTIVE

Central line-associated bloodstream infections (CLABSIs) are a common, costly, and hazardous healthcare-associated infection in children. In children in whom continued access is critical, salvage of infected central venous catheters (CVCs) with antimicrobial lock therapy is an alternative to removal and replacement of the CVC. However, the success of CVC salvage is uncertain, and when it fails the catheter has to be removed and replaced. We describe a machine learning approach to predict individual outcomes in CVC salvage that can aid the clinician in the decision to attempt salvage.

MATERIALS AND METHODS

Over a 14-year period, 969 pediatric CLABSIs were identified in electronic health records. We used 164 potential predictors to derive 4 types of machine learning models to predict 2 failed salvage outcomes, infection recurrence and CVC removal, at 10 time points between 7 days and 1 year from infection onset.

RESULTS

The area under the receiver-operating characteristic curve varied from 0.56 to 0.83, and key predictors varied over time. The infection recurrence model performed better than the CVC removal model did.

CONCLUSIONS

Machine learning-based outcome prediction can inform clinical decision making for children. We developed and evaluated several models to predict clinically relevant outcomes in the context of CVC salvage in pediatric CLABSI and illustrate the variability of predictors over time.

Factors predicting efficacy of ethanol lock therapy as catheter salvage strategy for pediatric catheter-related infections

AIM

Catheter-related infections are difficult to cure, and failure rates are high. We aimed to evaluate the efficacy and safety of ethanol lock therapy (ELT) as catheter salvage strategy in children with central-line-associated bloodstream infection (CLABSI), and to identify factors associated with treatment failure.

METHODS

Data were collected of all the children who received ELT for treatment of CLABSI during 2013-2018 due to failure of standard therapy or multiple catheter-related infections. Univariate and multivariate analyses of risk-factors for ELT failure were performed. Catheter salvage rates were compared to those achieved using systemic antimicrobials alone in an historical control group.

RESULTS

A total of 123 ELT episodes among 95 patients were analyzed. The majority of patients had underlying hemato-oncological disorders. Approximately half the episodes occurred in patients with implantable ports. Early and late treatment failure rates of ELT were 16% (20/123) and 7% (9/123), respectively. Overall, successful catheter salvage was achieved in 78% (96/123) of episodes, compared to 54% using systemic antimicrobials alone (P < .001), including mycobacterium, candida, and most staphylococcus aureus infections. Adverse events were reported in 9% (11/123) of episodes and were mostly mechanical. Multivariate analysis identified four risk factors for ELT failure: Gram-positive bacteria, elevated C-reactive protein, signs of tunnel infection, and low absolute neutrophil counts.

CONCLUSIONS

Our findings support the use of ELT for catheter salvage in children with CLABSI who failed standard therapy or had multiple catheter-related infections. The identified variables associated with ELT failure may help identify patients who can most benefit from ELT.

Development of a Clinical Prediction Model for Central Line-Associated Bloodstream Infection in Children Presenting to the Emergency Department

OBJECTIVE

The majority of the children with a central line who present to the emergency department with fever or other signs of bacteremia do not have a central line-associated bloodstream infection (CLABSI). Our objective was to develop a clinical prediction model for CLABSI among this group of children in order to ultimately limit unnecessary hospital admissions and antibiotic use.

METHODS

We performed a nested case-control study of children with a central line who presented to the emergency department of an urban, tertiary care children's hospital between January 2010 and March 2015 and were evaluated for CLABSI with a blood culture.

RESULTS

The final multivariable model developed to predict CLABSI consisted of 12 factors: age younger than 5 years, black race, use of total parenteral nutrition, tunneled central venous catheter, double-lumen catheter, absence of other bacterial infection, absence of viral upper respiratory tract infection symptoms, diarrhea, emergency department temperature greater than 39.5°C, fever prior to presentation, neutropenia, and spring/summer season. The clinical prediction score had good discrimination for CLABSI with a c-statistic of 0.81 (confidence interval, 0.77-0.85). A cut point less than 6 was associated with a sensitivity of 98.5% and a negative predictive value of 99.2% for CLABSI.

CONCLUSIONS

We were able to identify risk factors and develop a clinical prediction model for CLABSI in children presenting to the emergency department. Once validated in future study, this clinical prediction model could be used to assess the need for hospitalization and/or antibiotics among this group of patients.

Minimising Blood Stream Infection: Developing New Materials for Intravascular Catheters

Catheter related blood stream infection is an ever present hazard for those patients requiring venous access and particularly for those requiring long term medication. The implementation of more rigorous care bundles and greater adherence to aseptic techniques have yielded substantial reductions in infection rates but the latter is still far from acceptable and continues to place a heavy burden on patients and healthcare providers. While advances in engineering design and the arrival of functional materials hold considerable promise for the development of a new generation of catheters, many challenges remain. The aim of this review is to identify the issues that presently impact catheter performance and provide a critical evaluation of the design considerations that are emerging in the pursuit of these new catheter systems.

The implication of intestinal bacterial translocation in central line associated blood stream infections in the pediatric population

INTRODUCTION

Bacterial intestinal translocation plays an important role in neonatal sepsis. We aimed to elucidate the importance of such translocation in causing central line associated blood stream infection (CLABSI) in patients undergoing gastrointestinal surgery (GIS).

METHODS

Using a database of pediatric patients with CLABSI, patients were divided into those who had a GI-surgery (where intestines were opened), those who had a non-GI-surgery (NGIS; all other types of surgery) and those who had no surgery (NS). Data regarding type of organisms isolated on culture, their resistance patterns, clearance of CLABSI, type of antibiotic therapy and patient demographics were collected.

RESULTS

117 CLABSIs were identified between 2011 and 2018. 26 patients had GIS, 22 had NGIS and 69 had NS. NS patients were younger. 80% of GIS and NGIS patients had a central line at the time of surgery. Coagulase-negative staphylococcus (CoNS) was the most common organism isolated (32%). CoNS was more common in GIS compared to NGIS and NS (58% vs. 9% vs. 29% respectively, p=0.04). There were no differences in the time to resolution of bacteremia, mortality rates or need to remove the central line.

CONCLUSIONS

This information should help inform efforts for prevention of CLABSIs in patients undergoing GI surgery with central lines present.

LEVEL OF EVIDENCE

III.

Antibiotic Lock Therapy with Linezolid for the Treatment of Persistent Catheter-Related Infection in Children with Cancer

Objective Central venous catheter (CVC) colonization is a common problem in the pediatric oncology department. Initial colonization of CVC by coagulase-negative staphylococci (CoNS), Staphylococcus aureus, and enterococci is followed by the growth of intraluminal biofilm formation, and results in antibiotic therapy failure. The removal of the old CVC and insertion of new CVC is a difficult and expensive procedure in small children with cancer. The present article aimed to study our treatment results of antibiotic lock therapy (ALT) with linezolid in pediatric cancer patients.

Methods This study was planned as retrospective presentation of case series with eight pediatric cancer patients treated with 11 courses of systemic and linezolid lock therapy. Demographic information, clinical findings, laboratory data, blood culture results, complications, and outcome were collected for each patient retrospectively and descriptive statistical methods were used.

Results Prior to treatment, peripheral and CVC blood culture results showed Staphylococcus epidermidis in seven patients and Staphylococcus hominis in four patients. All pathogens were susceptible to vancomycin and teicoplanin; first-line treatment was vancomycin in six and teicoplanin in five patients. After first-line treatment, peripheral blood cultures of all patients were negative, whereas blood cultures from CVC remained positive. During second-line therapy with linezolid, microbiological eradication was achieved on the fourth day of treatment in each patient. Median catheter survival time for all patients was 14 (range: 8–30) months. No side effects were observed during the treatment and no resistant organisms were documented.

Conclusion Although multicentric prospective controlled trials will be required to provide more generalizable results, we suggest that systemic antibiotics combined with linezolid lock therapy used in pediatric cancer patients may be an effective option in treating catheter-related bloodstream infection (CRBSI) and prolonging CVC survival when CoNS are identified.

Development of a paediatric central venous access device database: A retrospective cohort study of practice evolution and risk factors for device failure

AIM

To describe practice evolution, complications and risk factors for multiple insertion attempts and device failure in paediatric central venous access devices (CVADs).

METHODS

A paediatric retrospective cohort study using prospectively collected data from CVAD database 2012-2014. Data included were patient (i.e. age, condition), insertion (i.e. indication, device, technique) and removal (complications, dwell). Descriptive statistics and incidence rates were calculated per calendar year and compared. Risk factors for multiple insertion attempts and failure were explored with logistic regression and cox regression, respectively.

RESULTS

A total of 1308 CVADs were observed over 273 467 catheter-days in 863 patients. Multiple insertion attempts remained static (14%) and significantly associated with non-haematological oncology (odds ratio 2.19; 95% confidence interval (CI) 1.08-4.43), respiratory (3.71; 1.10-12.5), gastroenterology (4.18; 1.66-10.5) and other (difficult intravenous access) (2.74; 1.27-5.92). CVAD failure decreased from 35% (2012) to 25% (2014), incidence rate from 1.50 (95% CI 1.25-1.80) to 1.28 (1.06-1.54) per 1000 catheter-days. Peripherally inserted CVAD failure was significantly associated with lower body weight (per kilogram decrease, hazard ratio (HR) 1.02; 95% CI 1.00-1.03), cephalic vein (1.62; 1.05-2.62), difficult access (1.92; 1.02-3.73), sub-optimal tip placement (1.69; 1.06-2.69) and gastroenterology diagnosis (2.27; 1.05-4.90). Centrally placed CVAD failure was significantly associated with younger age (per year, HR 1.04; 95% CI 1.00-1.07), tunnelled device (3.38; 2.41-4.73) and gastroenterology diagnosis (1.70; 1.06-2.73).

CONCLUSIONS

While advancement in CVAD practices improved overall CVAD insertion and failure outcomes, further improvements and innovation are necessary to ensure improved vessel health and preservation for children requiring CVAD.

Central Venous Catheter Management in High-risk Children With Bloodstream Infections

BACKGROUND

National guidelines recommend removal of central venous catheters (CVCs) for central line-associated bloodstream infections (CLABSIs) caused by Staphylococcus aureus, Pseudomonas aeruginosa, and fungi. Data regarding guideline compliance and rates of associated treatment failures in pediatric patients with attempted CVC salvage are limited.

METHODS

We performed a retrospective analysis of high-risk children (age ≤ 21 years) hospitalized from 1/2009 to 12/2015 with a long-term CVC and CLABSI due to S. aureus, Pseudomonas spp., and Candida spp. Enterococcus spp. was included given differing management recommendations between short and long-term CVCs. Compliance with national guideline recommendations, as well as treatment failures including infection relapse, recurrence, and death were evaluated in relation to CVC retention or removal. Multivariate logistic regression modeling was performed to account for confounders impacting treatment failure.

RESULTS

Fifty-three children had 108 CLABSI episodes requiring 84 hospitalizations. CVCs were removed in 36 (33%) CLABSI episodes per guideline recommendations. Optimal antimicrobial management, including targeted agent and adequate duration was provided in 54 (50%) of 106 treated episodes; no significant difference in treatment failure rates were noted compared with episodes with suboptimal management. The treatment failure rate was significantly higher in patients with CVC retention compared those with CVC removal within 7 days of the first positive blood culture (31% vs. 6%, P = 0.003).

CONCLUSIONS

Despite pathogen-specific guideline recommendations for CVC removal, compliance with national guidelines was poor. CVC salvage was attempted in the majority of CLABSI episodes in our cohort and resulted in a significantly higher treatment failure rate.

Risk factors for central line-associated bloodstream infections in children with tunneled central venous catheters

BACKGROUND

Central line-associated bloodstream infections (CLABSIs) are among the most common complications of central venous catheters (CVCs). The aim of this study was to examine the epidemiology of CLABSIs in tunneled CVCs and analyze their risk factors in a general pediatric population.

METHODS

Children with a tunneled CVC inserted at the University Children's Hospital Zürich between January 2009 and December 2015 were eligible for the study. The influence of CVC dwell time on the risk of CLABSI was examined using life tables. Hazard ratios (HRs) for CLABSIs were analyzed using Cox regression for age and diagnosis with cluster robust standard errors.

RESULTS

Fifty-five CLABSIs were observed in 193 patients with 284 tunneled CVCs. Overall, CVCs in children with gastrointestinal disorders and in children 2 to 5 years of age showed the highest incidence rates of 6.06 and 5.85 CLABSIs per 1,000 catheter days, respectively, during the first 90 days after placement. Gastrointestinal disease (HR, 3.89; 95% CI, 2.19-6.90; P < .001) and age 2 to 5 years (HR, 2.48; 95% CI, 1.45-4.22; P = .001) were identified as independent risk factors for CLABSI. In children without gastrointestinal disease, tunneled CVCs showed an increasing risk of CLABSI after a dwell time of 90 days.

CONCLUSIONS

The need for tunneled CVCs requires the evaluation of targeted CLABSI prevention measures, especially in young children with underlying gastrointestinal disease.

Diagnostic and Management Challenges in Congenital Nephrotic Syndrome

Congenital Nephrotic Syndrome (CNS) is defined as nephrotic range proteinuria, hypoalbuminaemia and edema in the first three months of life. CNS is most commonly genetic in cause, with international variance in the incidence of causative mutations. Initially defined by the histopathological appearance, increasingly sophisticated and accessible genetic analyses now provide a body of evidence to suggest that there is a disparity between the histological appearance, the genotype of individuals and the severity of the clinical disease. Through the evolution of management approaches CNS has changed from being an invariably fatal condition to one with appreciable ongoing morbidity and mortality but comparably good outcomes to other causes of paediatric end-stage renal disease, especially following transplantation. This review briefly summarises the more commonly recognised genetic mutations leading to CNS, addresses common management decisions, and concludes with potential therapies for the future.

Novel risk factors for central-line associated bloodstream infections in critically ill children

OBJECTIVE

Central-line-associated bloodstream infections (CLABSI) cause morbidity and mortality in critically ill children. We examined novel and/or modifiable risk factors for CLABSI to identify new potential targets for infection prevention strategies.

METHODS

This single-center retrospective matched case-control study of pediatric intensive care unit (PICU) patients was conducted in a 60-bed PICU from April 1, 2013, to December 31, 2017. Case patients were in the PICU, had a central venous catheter (CVC), and developed a CLABSI. Control patients were in the PICU for ≥2 days, had a CVC for ≥3 days, and did not develop a CLABSI. Cases and controls were matched 1:4 on age, number of complex chronic conditions, and hospital length of stay.

RESULTS

Overall, 72 CLABSIs were matched to 281 controls. Univariate analysis revealed 14 risk factors, and 4 remained significant in multivariable analysis: total number of central line accesses in the 3 days preceding CLABSI (80+ accesses: OR, 4.8; P = .01), acute behavioral health needs (OR, 3.2; P = .02), CVC duration >7 days (8-14 days: OR, 4.2; P = .01; 15-29 days: OR, 9.8; P < .01; 30-59 days: OR, 17.3; P < .01; 60-89 days: OR, 39.8; P < .01; 90+ days: OR, 4.9; P = .01), and hematologic/immunologic disease (OR, 1.5; P = .05).

CONCLUSIONS

Novel risk factors for CLABSI in PICU patients include acute behavioral health needs and >80 CVC accesses in the 3 days before CLABSI. Interventions focused on these factors may reduce CLABSIs in this high-risk population.

Evaluation of implanted venous port-a-caths in children with medical complexity and neurologic impairment

BACKGROUND

Children with medical complexity and associated neurologic impairment frequently face difficulties with venous access. Intermittently they require urgent intravenous administration of fluids and medication.

OBJECTIVE

To analyze the use of implanted port-a-caths in children with medical complexity who have neurologic impairment and difficult venous access.

MATERIALS AND METHODS

We performed a single-center observational study of port-a-caths placed by interventional radiologists in children with medical complexity with neurologic impairment. We analyzed peripheral intravenous access attempts, peripheral intravenous starts, peripheral intravenous complications, alternative temporary central venous access devices, port-a-cath insertions, catheter days, access days, port-a-cath-related complications, hospital admissions and emergency department visits. We compared the year pre port-a-cath to the year post port-a-cath.

RESULTS

Twenty-one children with medical complexity with neurologic impairment (10 boys, 11 girls; median age 4.1 years; median weight 13.7 kg) underwent 26 port-a-cath insertions (median catheter days 787). In the year post port-a-cath compared to pre port-a-cath there was a highly significant reduction (P<0.001) in numbers of peripheral intravenous attempts, peripheral intravenous starts and skin punctures; and a significant reduction (P<0.05) in need for other devices, number of emergency department visits, emergency department visits resulting in hospital admissions, and total admissions. Adverse events were graded as mild (n=18), moderate (n=6) and severe (n=0).

CONCLUSION

Port-a-cath placement in children with medical complexity with neurologic impairment significantly reduced all peripheral intravenous attempts, peripheral intravenous starts, skin punctures, total number of emergency department visits, visits culminating in admission, and total number of inpatient admissions. Advantages must be considered against potential port-a-cath-related adverse events.

Lessons learned from a hospital-wide review of blood stream infections for paediatric central line-associated blood stream infection prevention

AIM

Bacteraemia episodes were assessed to calculate a hospital-wide central line-associated blood stream infection (CLABSI) rate per 1000 catheter-days. Secondary objectives were to describe risk factors, microbiology and outcomes of children with CLABSI.

METHODS

A retrospective study was conducted at an Australian tertiary paediatric hospital in children <18 years who had blood culture sampling during the 2-year period, 2014-2015. All blood culture results were extracted from the hospital's laboratory information system. National Healthcare Safety Network Centres for Disease Control and Prevention definitions for bacteraemia classification were used. Central venous access device (CVAD) insertion and removal dates were obtained from a surgical electronic database and anaesthetic records and then manually validated.

RESULTS

Of 11 774 processed blood culture bottles, 207 episodes of blood stream infection were observed. Eighty-five (41%) episodes were community-acquired bacteraemia (CA-B) and 122 (59%) health care-associated bacteraemia (HA-B), of which 73 (35%) were CLABSI. The hospital-wide CLABSI rate was 0.62 per 1000 catheter-days (95% confidence interval: 0.49-0.77). Conditions associated with CLABSI were malignancy (n = 45, 62%) and gastrointestinal failure (n = 6, 8%). Thirty-three (45%) CLABSI episodes developed in an outpatient setting.

CONCLUSIONS

HA-B has a significant impact on child health, exceeding the number of CA-B at our hospital. Children with CVADs are vulnerable in both the inpatient and outpatient settings. Collecting robust data for a hospital-wide CLABSI rate is important to understand the full spectrum of paediatric CLABSI. The value of validating data using both electronic and manual methods is demonstrated.

Evidence-Based Strategies and Recommendations for Preservation of Central Venous Access in Children

Children with chronic illness often require prolonged or repeated venous access. They remain at high risk for venous catheter-related complications (high-risk patients), which largely derive from elective decisions during catheter insertion and continuing care. These complications result in progressive loss of the venous capital (patent and compliant venous pathways) necessary for delivery of life-preserving therapies. A nonstandardized, episodic, isolated approach to venous care in these high-need, high-cost patients is too often the norm, imposing a disproportionate burden on affected persons and escalating costs. This state-of-the-art review identifies known failure points in the current systems of venous care, details the elements of an individualized plan of care, and emphasizes a patient-centered, multidisciplinary, collaborative, and evidence-based approach to care in these vulnerable populations. These guidelines are intended to enable every practitioner in every practice to deliver better care and better outcomes to these patients through awareness of critical issues, anticipatory attention to meaningful components of care, and appropriate consultation or referral when necessary.

Central venous catheter repair is highly successful in children with intestinal failure

PURPOSE

Damaged central venous catheters (CVCs) are commonly repaired to avoid line replacement and preserve vascular access. However, limited data suggest an increased risk for central line-associated bloodstream infections (CLABSIs) associated with the repair procedure. The purpose of this study was to describe outcomes of CVC repairs among parenteral nutrition (PN) dependent children with intestinal failure (IF).

METHODS

A 2-year retrospective review was performed on children with IF on home PN > 6 months. Outcomes of interest were repair success and postrepair CLABSI incidence. Descriptive statistics included medians and frequencies.

RESULTS

A total of 36 pediatric IF patients underwent 96 CVC repairs during the study period. The median CVC repair count was 1.5 repairs/patient (range, 1 to 16 repairs/patient) with >1 repair in half the patients. Ninety-four broken catheters (98%) were successfully repaired with restoration of function. Of the unsuccessful repairs (2%), the two catheters eventually required surgical removal and replacement. One repair (1%) was followed by a CLABSI with Enterococcus faecalis in an immunocompromised patient.

CONCLUSION

CVC repair is a highly successful procedure with a low risk for infection. Catheter repair should be considered whenever possible as it may extend the lifetime of the catheter and decrease the risk for vascular access loss.

LEVEL OF EVIDENCE

Treatment study; level IV.

Taurolidine-Citrate Line Locks Prevent Recurrent Central Line-Associated Bloodstream Infection in Pediatric Patients

This study describes a successful, targeted intervention in central venous access device routine care to decrease central line-associated bloodstream infection. Taurolidine-citrate locks significantly reduced the rate of central line-associated bloodstream infection, particularly Gram-negative organisms without adverse events.

Treatment and secondary prophylaxis with ethanol lock therapy for central line-associated bloodstream infection in paediatric cancer: a randomised, double-blind, controlled trial

BACKGROUND

Central line-associated bloodstream infections (CLABSIs) affect about 25% of children with cancer, and treatment failure is common. Adjunctive ethanol lock therapy might prevent treatment failure but high-quality evidence is scarce. We evaluated ethanol lock therapy as treatment and secondary prophylaxis for CLABSI in children with cancer or haematological disorders.

METHODS

This randomised, double-blind, placebo-controlled superiority trial, with two interim futility and efficacy analyses (done when the first 46 and 92 evaluable participants completed study requirements), was done at two paediatric hospitals in the USA and Australia. Patients aged 6 months to 24 years, inclusive, with cancer or a haematological disorder and new CLABSI were eligible. Participants were randomly assigned (1:1) to receive either ethanol lock therapy (70% ethanol) or placebo (heparinised saline) for 2-4 h per lumen daily for 5 days (treatment phase), then for up to 3 non-consecutive days per week for 24 weeks (prophylaxis phase). The primary composite outcome was treatment failure, consisting of attributable catheter removal or death, new or persistent (>72 h) infection, or additional lock therapy during the treatment phase, and recurrent CLABSI during the prophylaxis phase. This trial is registered with ClinicalTrials.gov, number NCT01472965.

FINDINGS

94 evaluable participants were enrolled between Dec 14, 2011, and Sept 12, 2016, of whom 48 received ethanol lock therapy and 46 received placebo. The study met futility criteria at the second interim analysis. Treatment failure was similar with ethanol lock therapy (21 [44%] of 48) and placebo (20 [43%] of 46; relative risk [RR] 1·0, 95% CI 0·6-1·6; p=0·98). Some adverse events, including infusion reactions and catheter occlusion, were more frequent in the ethanol lock therapy group than in the placebo group. Catheter occlusion requiring thrombolytic therapy was more common with ethanol lock therapy (28 [58%] of 48) than with placebo (15 [33%] of 46; RR 1·8, 95% CI 1·1-2·9; p=0·012). Discontinuation of lock therapy because of adverse effects or patient request occurred in a similar proportion of participants in the ethanol lock therapy (nine [19%] of 48) and placebo groups (ten [22%] of 46; p=0·72).

INTERPRETATION

Ethanol lock therapy did not prevent CLABSI treatment failure and it increased catheter occlusion. Routine ethanol lock therapy for treatment or secondary prophylaxis is not recommended in this population.

FUNDING

American Lebanese Syrian Associated Charities to St Jude Children's Research Hospital and an Australian Government Research Training Scholarship.

Clinical Characteristics and Risk Factors of Long-term Central Venous Catheter-associated Bloodstream Infections in Children

BACKGROUND

Central line-associated bloodstream infections (CLABSIs) account for significant morbidity and mortality in patients with long-term central venous catheters (CVCs). This study was performed to identify the characteristics and risk factors of CLABSIs among children with long-term CVCs.

METHODS

A retrospective review of children who had a long-term CVC in Seoul National University Children's Hospital between 2011 and 2015 was performed. Data on patient demographics, the isolated pathogens and the status of CVC placement were collected. Clinical variables were compared between subjects with and without CLABSIs to determine the risk factors for CLABSIs.

RESULTS

A total of 629 CVCs were inserted in 499 children during the 5-year period. The median age at insertion was 6.0 years (14 days-17.9 years), and hemato-oncologic disease was the most common underlying condition (n = 497, 79.0%). A total of 235 CLABSI episodes occurred in 155 children, with a rate of 0.93 per 1,000 catheter days. The most common pathogens were Klebsiella pneumoniae (n = 64, 27.2%), coagulase-negative staphylococci (n = 40, 17.0%) and Staphylococcus aureus (n = 28, 12.0%). In the univariate analysis, the gender, underlying disease, catheter characteristics and insertion technique did not increase the risk for CLABSI. In both the univariate and logistic regression analyses, patients with prior BSIs (odds ratio 1.66; 95% confidence interval: 1.090-2.531; P = 0.018) were more likely to have a CLABSI.

CONCLUSIONS

CLABSI prevention is of particular concern for children with a prior BSI. Furthermore, the antimicrobial resistance of major pathogens should be monitored to enable the empiric selection of appropriate antibiotics in patients with long-term CVCs.

Salvage Strategy for Long-Term Central Venous Catheter-Associated Staphylococcus aureus Infections in Children

Introduction: Current international guidelines strongly recommend catheter removal in case of S. aureus central line-associated bloodstream infection (CLASBI), but a catheter salvage strategy may be considered in children given age-related specificities. No data is available regarding the outcome of this strategy in children. This study aims to evaluate catheter salvage strategy in children with S. aureus CLABSI, and to determine treatment failure rates and associated risk factors. Methods: We retrospectively analyzed data for all children <18 years having S. aureus CLABSI on a long-term central venous catheter in a tertiary hospital from 2010 to 2014. We defined catheter salvage strategy as a central venous catheter left in place ≥3 days after initiation of empiric treatment for suspected bacteremia, and catheter salvage strategy failure as the persistence or relapse of bacteremia with a S. aureus strain harboring the same antibiotic susceptibility pattern, or the occurrence or the worsening of local or systemic infectious complication between 72 h and 28 days after the first positive blood culture. Results: During the study period, 49 cases of S. aureus CLABSI on long-term central venous catheters were observed in 41 children (including 59% with long-term parenteral nutrition) and 6 (15%) isolates were resistant to methicillin. A catheter salvage strategy was chosen in 37/49 (76%) cases and failed in 12/37 (32%) cases. Initial presence of bloodstream co-infection, serum concentration of vancomycin under the targeted value and inadequate empiric treatment were significantly associated with catheter salvage therapy failure. Conclusions: The catheter salvage strategy of S. aureus CLABSI on a long-term central venous catheter was frequent in the studied hospital and failed only in one third of cases.

Central and peripheral line-associated bloodstream infections in Australian neonatal and paediatric intensive care units: findings from a comprehensive Victorian surveillance network, 2008-2016

BACKGROUND

Healthcare-associated infections in neonatal and paediatric populations are associated with poorer outcomes and healthcare costs, and surveillance is a necessary component of prevention programmes.

AIM

To evaluate burden of illness, aetiology, and time-trends for central and peripheral line-associated bloodstream infection (CLABSI and PLABSI) in Australian neonatal and paediatric intensive care units (ICUs) between July 1^st, 2008 and December 31^st, 2016.

METHODS

Using National Healthcare Safety Network methods, surveillance in neonatal and paediatric units was performed by hospitals participating in the Victorian Healthcare Associated Infection Surveillance System. Mixed effects Poisson regression was used to model infections over time.

FINDINGS

Overall, 82 paediatric CLABSI events were reported during 37,125 CVC-days (2.21 per 1000 CVC-days), 203 neonatal CLABSI events were reported during 92,169 CVC-days (2.20 per 1000 CVC-days), and 95 neonatal PLABSI events were reported during 142,240 peripheral line-days (0.67 per 1000 peripheral line-days). Over time, a significant decrease in quarterly risk for neonatal CLABSI events was observed (risk ratio (RR): 0.98; 95% confidence interval: 0.97-0.99; P = 0.023) and this reduction was significant for the 751-1000 g birth weight cohort (RR: 0.97; P = 0.015). Most frequently, coagulase-negative Staphylococcus spp. (24.2%) and Staphylococcus aureus (16.1%) were responsible for CLABSI events. A significant reduction in Gram-negative neonatal infections was observed (annual RR: 0.85; P < 0.001).

CONCLUSION

CLABSI rates in neonatal and paediatric ICUs in our region are low, and neonatal infections have significantly diminished over time. Evaluation of infection prevention programmes is required to determine whether specific strategies can be implemented to further reduce infection risk.

Comparison of methods and formulas used in umbilical venous catheter placement

AIM

Central venous access is frequently provided by way of umbilical venous catheter placement in critically ill newborns. This study compared the methods of Dunn, Shukla-Ferrara, and Revised Shukla-Ferrara in determining the appropriate insertion length of umbilical vein catheters.

MATERIAL AND METHODS

This prospective observational study was carried out in 121 newborns with umbilical venous catheter, group 1 (n=41) used Dunn method, group 2 (n=40) used the Shukla-Ferrara formula, and group 3 used revised Shukla-Ferrara formula (n=40). Catheter tip position was evaluated with an anterior-posterior chest radiograph after insertion of the umbilical venous catheter. The ideal position for the umbilical venous catheter was defined as the catheter tip being visible between the 9th and 10th thoracic vertebrae on an anterior-posterior chest radiograph. The position of the umbilical venous catheter was considered too high if the tip of the catheter was higher than the 9th thoracic vertebra and too low if the tip was below the 10th thoracic vertebra. The following data were collected: appropriate, inappropriate (low, high) placement, and complications of umbilical venous catheterization.

RESULTS

In the Shukla-Ferrara group, 53% (17/32) of umbilical venous catheters were placed directly in the appropriate position, compared with 40% (12/30) in the revised Shukla-Ferrara group and 38% (11/29) in the Dunn method group. Umbilical venous catheter-related complications developed in two patients, thrombus in one, and catheter-related blood stream infection in the other.

CONCLUSIONS

This study showed that the Shukla-Ferrara formula is more accurate in predicting the insertion length for umbilical venous catheters, though statistical significance was not found. Further studies with larger samples are needed on this topic.

Management of neutropenic patients in the intensive care unit (NEWBORNS EXCLUDED) recommendations from an expert panel from the French Intensive Care Society (SRLF) with the French Group for Pediatric Intensive Care Emergencies (GFRUP), the French Society of Anesthesia and Intensive Care (SFAR), the French Society of Hematology (SFH), the French Society for Hospital Hygiene (SF2H), and the French Infectious Diseases Society (SPILF)

Neutropenia is defined by either an absolute or functional defect (acute myeloid leukemia or myelodysplastic syndrome) of polymorphonuclear neutrophils and is associated with high risk of specific complications that may require intensive care unit (ICU) admission. Specificities in the management of critically ill neutropenic patients prompted the establishment of guidelines dedicated to intensivists. These recommendations were drawn up by a panel of experts brought together by the French Intensive Care Society in collaboration with the French Group for Pediatric Intensive Care Emergencies, the French Society of Anesthesia and Intensive Care, the French Society of Hematology, the French Society for Hospital Hygiene, and the French Infectious Diseases Society. Literature review and formulation of recommendations were performed using the Grading of Recommendations Assessment, Development and Evaluation system. Each recommendation was then evaluated and rated by each expert using a methodology derived from the RAND/UCLA Appropriateness Method. Six fields are covered by the provided recommendations: (1) ICU admission and prognosis, (2) protective isolation and prophylaxis, (3) management of acute respiratory failure, (4) organ failure and organ support, (5) antibiotic management and source control, and (6) hematological management. Most of the provided recommendations are obtained from low levels of evidence, however, suggesting a need for additional studies. Seven recommendations were, however, associated with high level of evidences and are related to protective isolation, diagnostic workup of acute respiratory failure, medical management, and timing surgery in patients with typhlitis.

Complications of indwelling central venous catheters in pediatric liver transplant recipients

In pLT recipients, the advantages of ICVCs need to be weighed against the risk of complications. This single-center retrospective study aimed to review ICVC complications in our cohort of pLT recipients. We performed chart reviews of pLT patients having undergone transplant between 01/2000 and 03/2014 and who underwent ICVC placement either before or after LT. We identified 100 ICVC in 85 patients. Overall observation time was 90 470 catheter-days. There was no difference in catheter lifespan between those inserted pre- or post-transplant; 46% of ICVC presented a complication. Most frequent complications were MD and infection. The infection rate was 0.09 per 1000 catheter-days, and MD rate was 0.36 per 1000 catheter-days. Patients having received technical variant grafts were more at risk of complications. To the best of our knowledge, this is the first study examining ICVC complications in pLT recipients. We conclude that ICVC have a high rate of MD. Children receiving technical variants may be more at risk of complications. By removing ICVC in a select number of patients at six months post-insertion, we might avoid as much as 60% of complications.

Surveillance of bloodstream infections in pediatric cancer centers - what have we learned and how do we move on?

Pediatric patients receiving conventional chemotherapy for malignant disease face an increased risk of bloodstream infection (BSI). Since BSI may represent an acute life-threatening event in patients with profound immunosuppression, and show further negative impact on quality of life and anticancer treatment, the prevention of BSI is of paramount importance to improve and guarantee patients' safety during intensive treatment. The great majority of all pediatric cancer patients (about 85%) have a long-term central venous access catheter in use (type Broviac or Port; CVAD). Referring to the current surveillance definitions a significant proportion of all BSI in pediatric patients with febrile neutropenia is categorized as CVAD-associated BSI. This state of the art review summarizes the epidemiology and the distinct pathogen profile of BSI in pediatric cancer patients from the perspective of infection surveillance. Problems in executing the current surveillance definition in this patient population are discussed and a new concept for the surveillance of BSI in pediatric cancer patients is outlined.

Central Venous Access in the Pediatric Population With Emphasis on Complications and Prevention Strategies

Central venous catheters are often necessary in the pediatric population. Access may be challenging, and each vessel presents its own unique set of risks and complications. Central venous catheterization is useful for hemodynamic monitoring, rapid fluid infusion, and administration of hyperosmolar medications, including vasopressors, antibiotics, chemotherapy, and parenteral nutrition. Recent advances have improved the catheters used as well as techniques for insertion. A serious complication of central access is infection, which is associated with morbidity, mortality, and significant financial costs. Reduction of catheter-related bloodstream infections is realized with use of ethanol locks, single lumens when appropriate, and prudent adherence to insertion and maintenance bundles. Ultrasound guidance used for central venous catheter placement improves accuracy of placement, reducing time and unsuccessful insertion and complication rates. Patients with central venous catheters are best served by multidisciplinary team involvement.

Catheter-Related Complications in Children With Cancer Receiving Parenteral Nutrition: Change in Risk Is Moderated by Catheter Type

BACKGROUND

Although central venous catheters (CVCs) are essential to pediatric cancer care, complications are common (eg, occlusion, central line-associated bloodstream infection [CLABSI]). Parenteral nutrition (PN) and external CVCs are associated with an increased complication risk, but their interaction is unknown.

METHODS

A retrospective matched cohort study of pediatric oncology patients who received PN through subcutaneous ports or external CVCs. Complication rates were compared between CVC types during PN and non-PN periods (log-negative binomial model).

RESULTS

Risk of CLABSI was higher during PN for children with ports (relative risk [RR] = 39.6; 95% confidence interval, 5.0-309) or external CVCs (RR = 2.9; 95% confidence interval, 1.1-7.4). This increased risk during PN was greater for ports than for external CVCs (ratio of relative risks = 13.6). Occlusion risk was higher during PN in both groups (RR = 10.0 for ports; RR = 2.0 for external CVCs), and the increase was significantly greater in ports (ratio of relative risks, 4.9). Overall, complication rates for ports were much lower than for external CVCs during the non-PN period but similar during the PN period.

CONCLUSION

Children with cancer who receive PN have increased risk of CLABSI and occlusion. The risk increase is greatest in children with ports: a 40- and 10-fold increase in infection risk and occlusion, respectively, resulting in similar complication rates during PN regardless of CVC type and negating the usual benefits of ports. Children with cancer who will require PN should have primary insertion of external CVCs where possible.

Umbilical venous catheter complications in newborns: a 6-year single-center experience

OBJECTIVE

Umbilical venous catheter (UVC) insertion is frequently performed in critically ill neonates. Various mild or serious complications of umbilical venous catheterization can be observed associated with this procedure. In this study, newborns that have undergone UVC and developed complications were evaluated.

METHODS

This retrospective observational study was carried out in newborns that have undergone UVC and developed complications were evaluated between June 2008 and November 2014.

RESULTS

Umbilical venous catheter were inserted to 974 (22.4%) newborn and followed for 7402/catheter days. UVC-related complications developed at 198 patients (20.3%). The most common UVC-related complications were malposition (n = 189), catheter-related bloodstream infection (n = 6) and remnant of catheter in the umbilicus (n = 3), respectively. Remnant of catheter in the umbilicus was removed by pediatric surgeon. Except one patient, all patients were discharged.

CONCLUSION

Although UVC is a common and easy vascular access, this process is not without complications. UVC may be inappropriate position because the catheter is inserted by the pediatrician without imaging guidance and may occasionally be associated with complications. Inappropriate positioning of the catheter may observe during the follow-up and maintained care. Therefore, newborns particularly in premature and very low birth-weight newborn should be followed in terms of catheter complications during insertion, following and just after removing of the catheter.

Monitoring Central Venous Catheter Resistance to Predict Imminent Occlusion: A Prospective Pilot Study

BACKGROUND

Long-term central venous catheters are essential for the management of chronic medical conditions, including childhood cancer. Catheter occlusion is associated with an increased risk of subsequent complications, including bloodstream infection, venous thrombosis, and catheter fracture. Therefore, predicting and pre-emptively treating occlusions should prevent complications, but no method for predicting such occlusions has been developed.

METHODS

We conducted a prospective trial to determine the feasibility, acceptability, and efficacy of catheter-resistance monitoring, a novel approach to predicting central venous catheter occlusion in pediatric patients. Participants who had tunneled catheters and were receiving treatment for cancer or undergoing hematopoietic stem cell transplantation underwent weekly catheter-resistance monitoring for up to 12 weeks. Resistance was assessed by measuring the inline pressure at multiple flow-rates via a syringe pump system fitted with a pressure-sensing transducer. When turbulent flow through the device was evident, resistance was not estimated, and the result was noted as "non-laminar."

RESULTS

Ten patients attended 113 catheter-resistance monitoring visits. Elevated catheter resistance (>8.8% increase) was strongly associated with the subsequent development of acute catheter occlusion within 10 days (odds ratio = 6.2; 95% confidence interval, 1.8-21.5; p <0.01; sensitivity, 75%; specificity, 67%). A combined prediction model comprising either change in resistance greater than 8.8% or a non-laminar result predicted subsequent occlusion (odds ratio = 6.8; 95% confidence interval, 2.0-22.8; p = 0.002; sensitivity, 80%; specificity, 63%). Participants rated catheter-resistance monitoring as highly acceptable.

CONCLUSIONS

In this pediatric hematology and oncology population, catheter-resistance monitoring is feasible, acceptable, and predicts imminent catheter occlusion. Larger studies are required to validate these findings, assess the predictive value for other clinical outcomes, and determine the impact of pre-emptive therapy.

TRIAL REGISTRATION

Clinicaltrials.gov NCT01737554.

Central venous catheter-associated bloodstream infections in pediatric hematology-oncology patients and effectiveness of antimicrobial lock therapy

BACKGROUND

Central line-associated bloodstream infection (CLABSI) is a serious complication in hematology-oncology patients. This study aimed to analyze the prevalence of CLABSI and the effectiveness of antimicrobial lock therapy (ALT) in pediatric patients.

METHODS

BSIs of all pediatric hematology-oncology patients admitted to a children's hospital between January 2009 and December 2013 were reviewed. The United States National Healthcare Safety Network and Infectious Diseases Society of America guidelines were used to define CLABSI and catheter-related BSI (CRBSI). The incidence, laboratory and microbiology characteristics, poor outcome, and effectiveness of ALT were analyzed.

RESULTS

There were 246 cases of CLABSI in 146 patients (mean age, 10.0 years), including 66 (26.8%) cases of CRBSI. The incidence of CLABSI was 4.49/1000 catheter-days, and the infection was responsible for 32.9% of the complications these patients developed and 9.3% of contributable mortality. Patients with acute myeloid leukemia had the highest infection density (5.36/1000 patient-days). Enterobacteriaceae (40.2%) and coagulase-negative staphylococci (CoNS; 20.7%) were the predominant pathogens. In multivariate analysis, older age, male sex, elevated C-reactive protein, acute lymphoblastic leukemia, and candidemia were associated with poor outcome. The success rate of ALT was 58.6% (17/29) for the treatment of CoNS and 78.3% (29/37) for Enterobacteriaceae infections. Patients with candidemia (n = 18) had the highest mortality (33.4%) and catheter removal rate (66.7%). Chlorhexidine as the disinfectant decreased the 1-year CLABSI rate from 13.7/1000 to 8.4/1000 catheter-days (p = 0.02).

CONCLUSION

CoNS and Enterobacteriaceae are the predominant pathogens in CLABSI among pediatric hematology-oncology patients. ALT is effective and showed no significant side effect. New disinfection practice and infection control measures can decrease CLABSI.

No evidence of benefit from antibiotic lock therapy in pediatric oncology patients with central line-related bloodstream infection: results of a retrospective matched cohort study and review of the literature

BACKGROUND

Long-term central venous catheters (CVCs) are essential to modern pediatric oncology practice, but central line-related bloodstream infection (CRBSI) is a frequent and important complication. CVC salvage is often attempted but treatment failure is common due to persistent infection, delayed catheter removal, or subsequent relapse of infection, which can be associated with significant morbidity and cost. Adjunctive antibiotic lock therapy (ALT) has been proposed to reduce the risk of treatment failure, but insufficient data are available to confirm efficacy of this intervention.

PROCEDURE

We undertook a retrospective matched cohort study of ALT use for treatment of CRBSI in pediatric hematology/oncology patients at St. Jude Children's Research Hospital between 2006 and 2012.

RESULTS

Thirty-eight eligible episodes of CRBSI treated with adjunctive ALT were identified and compared to 73 episodes treated with standard therapy (ST) alone, matched by catheter-type and organism. Overall, treatment failure was similar between ALT and ST groups (50.0 vs. 38.4%; P = 0.24), but the timing was different; in the ALT cohort, immediate CVC removal was less common (0.0 vs. 12.3%; P = 0.03) but delayed removal (4-13 days) and relapse of infection was more common (50.0 vs. 24.7%; P = 0.01).

CONCLUSIONS

This retrospective study was unable to identify any benefit of adjunctive ALT in pediatric oncology patients with CRBSI. The available evidence does not support routine ALT use, and well-conducted prospective studies are needed.