Infectious morbidity by catheter type in neutropenic children with cancer

Surgical Experience Affects the Outcome of Central Venous Access Catheter Implantation in Children: A Retrospective Cohort Study

INTRODUCTION

Surgical complications occur in up to third of children, limiting the benefits of tunneled central venous catheters (tCVCs) in children. We aimed to identify risk factors for complications related to catheter implantation.

METHODS

All children and adolescents undergoing tCVC implantation at a single center over a period of 9 years were analyzed. Infection, thrombosis, dislocation, and catheter dysfunction were defined as complications. Both patient-related (ie, age, sex, vessel characteristics, revision surgery) and surgical factors (ie, sex of surgeon, surgical experience) were analyzed for their association with complications.

RESULTS

A total of 1024 catheters were inserted, 887 ports and 137 broviac catheters. In terms of patient-related factors, Broviac catheters, and nononcological patients had a higher complication rate. The use of the internal jugular vein and revision surgery was associated with significantly increased complications in patients with port catheters. Experience of the surgeon correlated with various outcome parameters. Implantation performed by an attending were associated with lower complication rates in comparison to those performed by residents. Within the resident group, insertions performed by experienced residents had more complications compared with those performed by residents during their first years.

CONCLUSION

The study suggests that the outcome of tCVCs insertion is affected by the type of catheter used, the utilized vessel and above all by surgical experience. Residents had significantly increased complication rates in comparison to board-certified surgeons and amongst resident's outcome got worse with increasing experience of the residents. The presence of an experienced attending did not compensate for this effect. To improve the outcome of tCVCs, strategies like direct feedback after every procedure to achieve proficiency should be implanted in residency programs.

Risk of bacterial bloodstream infection does not vary by central-line type during neutropenic periods in pediatric acute myeloid leukemia

BACKGROUND

Bloodstream infections (BSIs) are a frequent cause of morbidity in patients with acute myeloid leukemia (AML), due in part to the presence of central venous access devices (CVADs) required to deliver therapy.

OBJECTIVE

To determine the differential risk of bacterial BSI during neutropenia by CVAD type in pediatric patients with AML.

METHODS

We performed a secondary analysis in a cohort of 560 pediatric patients (1,828 chemotherapy courses) receiving frontline AML chemotherapy at 17 US centers. The exposure was CVAD type at course start: tunneled externalized catheter (TEC), peripherally inserted central catheter (PICC), or totally implanted catheter (TIC). The primary outcome was course-specific incident bacterial BSI; secondary outcomes included mucosal barrier injury (MBI)-BSI and non-MBI BSI. Poisson regression was used to compute adjusted rate ratios comparing BSI occurrence during neutropenia by line type, controlling for demographic, clinical, and hospital-level characteristics.

RESULTS

The rate of BSI did not differ by CVAD type: 11 BSIs per 1,000 neutropenic days for TECs, 13.7 for PICCs, and 10.7 for TICs. After adjustment, there was no statistically significant association between CVAD type and BSI: PICC incident rate ratio [IRR] = 1.00 (95% confidence interval [CI], 0.75-1.32) and TIC IRR = 0.83 (95% CI, 0.49-1.41) compared to TEC. When MBI and non-MBI were examined separately, results were similar.

CONCLUSIONS

In this large, multicenter cohort of pediatric AML patients, we found no difference in the rate of BSI during neutropenia by CVAD type. This may be due to a risk-profile for BSI that is unique to AML patients.

Prevalence and risk factors for venous thromboembolism in children with sickle cell disease: an administrative database study

A hypercoagulable state resulting in increased venous thromboembolism (VTE) has been described in adults with sickle cell disease (SCD), but similar data for children are lacking. The objective of this retrospective cohort study was to describe the rate of VTE and risk factors associated with VTE in children with SCD across tertiary-care children's hospitals in the United States between the years 2009 and 2015. We used the Pediatric Health Information System database to investigate all pediatric patients with SCD admitted to 1 of 48 participating institutions between 1 January 2009 and 30 September 2015. International Classification of Disease, Ninth Edition, Clinical Modification codes were used to identify index thromboembolic events and chronic medical conditions known to be associated with VTE. Billing codes were used to identify central venous line (CVL) placement and pharmaceutical billing codes to identify estrogen containing oral-contraceptive use. Logistic regression analysis was used to study the association among unique patient characteristics, VTE, and death. 10 454 eligible subjects with SCD were identified. Median age (±interquartile range) of study cohort was 10 (±11) years. 181 subjects (1.7%) developed an index venous thromboembolic event during the study period. Median age at VTE diagnosis was 15.9 (±7.4) years. On multivariable logistic regression analysis, CVL placement, chronic renal disease, history of stroke, female sex, length of hospitalization, intensive care unit utilization, and older age were associated with VTE. After adjusting for other variables, VTE was independently associated with death. In summary, VTE can occur in pediatric patients with SCD. CVL placement is a modifiable risk factor for VTE development.

The incidence and predictors of symptomatic venous thromboembolism associated with peripherally inserted central catheters in patients with nasopharyngeal carcinoma

Background

Despite wide usage, peripherally inserted central catheter (PICC)-related venous thromboembolism (VTE) is common in nasopharyngeal carcinoma (NPC) patients.

Patients and methods

This was a retrospective cohort study of NPC patients with PICC insertions from February 2, 2007 to December 25, 2014 in Sun Yat-Sen University Cancer Centre. Univariable and multivariable logistic regression analyses were used to estimate odds ratios (ORs) with 95% confidence intervals (CIs) for the correlations between risk factors and symptomatic PICC-VTE.

Results

Of the 1,363 NPC patients, 76 developed symptomatic VTE. In univariable analysis, body mass index (BMI), Eastern Cooperative Oncology Group (ECOG) score, metastasis stage (M stage), and VTE history were associated with symptomatic PICC-VTE. Following multivariable adjustments, BMI (OR 0.900, p=0.007), ECOG score (OR 4.162, p=0.011), M stage (OR 2.717, p=0.019), and VTE history (OR 109.772, p<0.001) were still statistically significant.

Conclusion

PICC-VTE is a common complication in NPC patients, with an incidence of 5.6% in our analysis. Those with VTE history and lower BMI and worse ECOG performance score metastatic NPC patients are more susceptible to symptomatic PICC-related thrombosis and thus may require prophylactic anticoagulation.

Central line bundle for prevention of central line-associated bloodstream infection for totally implantable venous access devices (ports) in pediatric cancer patients

OBJECTIVE

The clinical impact of central line bundle programs for central line-associated bloodstream infections has been well demonstrated in intensive care units. However, the experience of central line bundle programs in totally implantable venous access devices (ports) in pediatric-hematology patients was limited.

METHODS

A retrospective study was designed to compare and evaluate the clinical impact of implementing a central line bundle for a 2-year 5-month period, including 10 months of prebundle period, 11 months of central line bundle (that includes needleless split-septum devices), and finally 8 months of central line bundle period in which single-use prefilled flushing devices were added to the previous central line bundle.

RESULTS

During the prebundle period, the rate of 14.5 central line-associated bloodstream infections per 1000 CL-days had decreased to 5.49 CLABSIs per 1000 CL-days in the first bundle period. The incidence rate ratio with these two groups was 0.379, indicating a relative risk reduction of 62% ( p = 0.005). By the addition of single-use prefilled flushing devices to the first bundle program, the central line-associated bloodstream infection rate decreased to 2.63 per 1000 CL-days. Port removal rate due to central line-associated bloodstream infections was 0.46 per 1000 catheter days in the bundle period, which was significantly lower than in the prebundle period in which port removal rate was 4.5 per 1000 catheter days ( p < 0.001).

CONCLUSION

Central line bundle programs were found to be effective in decreasing central line-associated bloodstream infection rates, improving patients' quality of life by preventing ports removal due in pediatric cancer patients.

Comparing catheter-related bloodstream infections in pediatric and adult cancer patients

OBJECTIVE

Central venous catheters (CVCs) are essential to treatment of children with cancer. There are no studies comparing catheter-related bloodstream infections (CRBSIs) in pediatric cancer patients to those in adults, although current guidelines for management of CRBSI do not give separate guidelines for the pediatric population. In this study, we compared CRBSIs in both the pediatric and adult cancer population.

METHODS

We retrospectively reviewed the electronic medical records of 92 pediatric and 156 adult patients with CRBSI cared for at MD Anderson Cancer Center between September 2005 and March 2014.

RESULTS

We evaluated 248 patients with CRBSI. There was a significant difference in etiology of CRBSI between pediatric and adult patients (P = 0.002), with the former having less Gram-negative organisms (27 vs. 46%) and more polymicrobial infections (10 vs. 1%, P = 0.003). Pediatric patients had less hematologic malignancies (58 vs. 74%) and less neutropenia at presentation (40 vs. 54%) when compared with adult patients. Peripheral blood cultures were available in only 43% of pediatric cases. CVC was removed in 64% of pediatric cases versus 88% of adult cases (P < 0.0001).

CONCLUSION

We found higher rates of Gram-negative organisms in adults and higher rates of polymicrobial in children. Because of the low rates of peripheral blood cultures and the low rates of CVC removal, CRBSI diagnosis could be challenging in pediatrics. A modified CRBSI definition relying more on clinical criteria may be warranted.

The Care of Central Venous Catheters in the Oncopediatric Department

Introduction: Childhood cancer, with its major psycho-social and health impact, needs long-term chemotherapy. Increasing the intensity of treatment results in improved outcomes of hematological malignancies and solid tumors. As cytostatics have a vascular irritating effect and multiple peripheric venous punctures cause pain, insertion of a long-term central venous catheter (CVC) during chemotherapy is often necessary.

Materials and methods: All pediatric patients (aged below 18 years) with hematologic and malignant pathologies who underwent CVC insertion at the Pediatric Hemato-oncology Department of the County Emergency Clinical Hospital of Tîrgu Mureș in the February 2014 – May 2016 period were enrolled in the study.

Results: We recorded 24 cases who received central venous catheters, out of which 14 patients received tunneled CVC, 7 patients port CVC, and 3 patients received initially tunneled CVC which was changed with port CVC. Tunneled catheters were preserved in average for 186.06 days and portacaths for 256.6 days. For infection prophylaxis and treatment every child received adequate antibiotic medication.

Conclusions: The use of central lines in pediatric hemato-oncology is accessible and benefic not only for increasing patient comfort, but also to ease the nurses' work, who are often overburdened.

Central Line Associated Blood Stream Infections in Pediatric Hematology/Oncology Patients With Different Types of Central Lines

BACKGROUND

Central line associated bloodstream infections (CLABSIs) are a significant cause of morbidity and mortality in pediatric hematology/oncology (PHO) patients. Understanding the differences in CLABSI rates by central line (CL) type is important to inform clinical decisions.

PROCEDURE

CLABSI, using similar definitions, noted with three commonly used CL types (totally implanted catheter [port], tunneled externalized catheter [TEC], peripherally inserted central catheter [PICC]) and CL-specific line days were prospectively tracked across 15 US PHO centers from May 2012 until April 2015 and CLABSI rates (CLABSI per 1,000 CL-specific line days) were calculated. Host and organism characterstics associated with the CLABSI events were analyzed.

RESULTS

Over the course of 2.8 million line days, 1,113 CLABSI events (397 in inpatients and 716 in ambulatory patients) were noted. The inpatient CLABSI rate was higher than the ambulatory CLABSI rate for each of the CL types: 1.48 versus 0.16 for ports, 3.51 versus 1.38 for TECs, and 3.07 versus 1.16 for PICCs, respectively. TECs and PICCs were associated with higher CLABSI rates than ports, inpatient and ambulatory.

CONCLUSIONS

We found that CLABSI rates were significantly higher for inpatients compared to ambulatory PHO patients for all CL types. Among ambulatory patients, TECs had the highest CLABSI rate and ports the lowest. Among inpatients, TECs and PICCs had higher CLABSI rates than ports but were not statistically different from one another. Cognizant that host and underlying disease attributes may contribute to these differences, these results can still inform CL choice in clinical practice.

Central venous Access device SeCurement And Dressing Effectiveness (CASCADE) in paediatrics: protocol for pilot randomised controlled trials

INTRODUCTION

Paediatric central venous access devices (CVADs) are associated with a 25% incidence of failure. Securement and dressing are strategies used to reduce failure and complication; however, innovative technologies have not been evaluated for their effectiveness across device types. The primary aim of this research is to evaluate the feasibility of launching a full-scale randomised controlled efficacy trial across three CVAD types regarding CVAD securement and dressing, using predefined feasibility criteria.

METHODS AND ANALYSIS

Three feasibility randomised, controlled trials are to be undertaken at the Royal Children's Hospital and the Lady Cilento Children's Hospital, Brisbane, Australia. CVAD securement and dressing interventions under examination compare current practice with sutureless securement devices, integrated securement dressings and tissue adhesive. In total, 328 paediatric patients requiring a peripherally inserted central catheter (n=100); non-tunnelled CVAD (n=180) and tunnelled CVAD (n=48) to be inserted will be recruited and randomly allocated to CVAD securement and dressing products. Primary outcomes will be study feasibility measured by eligibility, recruitment, retention, attrition, missing data, parent/staff satisfaction and effect size. CVAD failure and complication (catheter-associated bloodstream infection, local infection, venous thrombosis, occlusion, dislodgement and breakage) will be compared between groups.

ETHICS AND DISSEMINATION

Ethical approval to conduct the research has been obtained. All dissemination will be undertaken using the CONSORT Statement recommendations. Additionally, the results will be sent to the relevant organisations which lead CVAD focused clinical practice guidelines development.

TRIAL REGISTRATION NUMBERS

ACTRN12614001327673; ACTRN12615000977572; ACTRN12614000280606.

Update on infection control challenges in special pediatric populations

PURPOSE OF REVIEW

Compared with adults, neonatal and pediatric populations are especially vulnerable patients who have specific diagnostic and therapeutic differences; therefore, the standard infection control practices designed for adults are sometimes not effective or need modifications to work. This review focuses on the recent literature addressing the challenges and successes in preventing healthcare-associated infections (HAIs) in children.

RECENT FINDINGS

Improving the implementation of pediatric versions of preventive bundles focusing on proper catheter insertion and maintenance, mainly as a part of a larger multimodal strategy, is effective in reducing the central-line-associated bloodstream infections in neonatal and pediatric populations including oncology patients. Appropriate feeding, antimicrobial stewardship, and infection control measures should be combined in reducing necrotizing enterocolitis in preterm neonates. Implementing a multimodal bundle strategy adapted for pediatric population is successful in preventing ventilator-associated pneumonia. Appropriate use of antimicrobial prophylaxis remains the cornerstone for preventing surgical-site infections irrespective of age, with few additional effective adjuvant preventive practices in specific pediatric patients.

SUMMARY

Several evidence-based practices are effective in reducing the incidence and the impact of HAIs in children; however, proper implementation remains a challenge. Additionally, several adult preventive practices are still unestablished in children and need further thorough examination.