ABSTRACT
BACKGROUND: Filter clotting is a major issue in continuous kidney replacement therapy (CKRT) that interrupts treatment, reduces delivered effluent dose, and increases cost of care. While a number of variables are involved in filter life, treatment modality is an understudied factor. We hypothesized that filters in pre-filter continuous venovenous hemofiltration (CVVH) would have shorter lifespans than in continuous venovenous hemodialysis (CVVHD). METHODS: This was a single center, pragmatic, unblinded, quasi-randomized cluster trial conducted in critically ill adult patients with severe acute kidney injury (AKI) at the University of Iowa Hospitals and Clinics (UIHC) between March 2020 and December 2020. Patients were quasi-randomized by time block to receive pre-filter CVVH (convection) or CVVHD (diffusion). The primary outcome was filter life, and secondary outcomes were number of filters used, number of filters reaching 72 hours, and in-hospital mortality. RESULTS: In the intention-to-treat analysis, filter life in pre-filter CVVH was 79% of that observed in CVVHD (mean ratio 0.79, 95% CI 0.65-0.97, p = 0.02). Median filter life (with interquartile range) in pre-filter CVVH was 21.8 (11.4-45.3) and was 26.6 (13.0-63.5) for CVVHD. In addition, 11.8% of filters in pre-filter CVVH were active for >72 hours, versus 21.2% in the CVVHD group. Finally, filter clotting accounted for the loss of 26.7% of filters in the CVVH group compared to 17.5% in the CVVHD group. There were no differences in overall numbers of filters used or mortality between groups. CONCLUSIONS: Among critically patients with severe AKI requiring CKRT, use of pre-filter CVVH resulted in significantly shorter filter life compared to CVVHD. TRIAL REGISTRATION: ClinicalTrials.gov, NCT04762524. Registered 02/21/21-Retroactively registered, https://clinicaltrials.gov/ct2/show/NCT04762524?cond=The+Impact+of+CRRT+Modality+on+Filter+Life&draw=2&rank=1.
Subject(s)
Acute Kidney Injury , Continuous Renal Replacement Therapy , Hemodiafiltration , Hemofiltration , Adult , Humans , Hemofiltration/methods , Hemodiafiltration/methods , Renal Dialysis , Acute Kidney Injury/therapyABSTRACT
BACKGROUND: The advent of multiple safe and effective vaccines to prevent SARS-CoV-2 infection represents a major step in resolving the COVID-19 global pandemic. Vaccination of individuals with rheumatologic diseases on immunomodulators represents an additional challenge because data suggest that certain immunomodulators may impact vaccine efficacy. METHODS: At a large, predominantly rural Midwestern Veterans Affairs rheumatology clinic, an interprofessional group of investigators conducted a quality improvement project to develop a COVID-19 vaccine readiness kit, consisting of patient education materials and a readiness questionnaire to help guide veteran decision-making. Using a Lean Six Sigma approach and the DMAIC (Define-Measure-Analyze-Improve-Control) framework, the investigators identified customer values, needs, and barriers to participation. Return rates and responses from the questionnaire were tracked over 28 days. RESULTS: One hundred seventy-nine veterans were identified and mailed kits; 129 (73%) returned the questionnaire within 28 days. Ninety-seven percent of those opted to hold immunomodulators after at least 1 administration of the vaccine; 3.1% were not interested in vaccination. Veterans voiced satisfaction at the simplicity of the process, comprehensibility of materials, and the clarity of communication. CONCLUSIONS: The Lean Six Sigma approach, systematically focusing on identifying the values, needs, and barriers of veterans on immunomodulators, was critical to high participation rates from veterans. This approach is cost-effective for resource-poor settings, audiences without access or familiarity to digital content, and rural settings separated by large geographic distances.
Subject(s)
Arthritis, Rheumatoid , COVID-19 , Veterans , COVID-19 Vaccines , Humans , Immunologic Factors , Quality Improvement , SARS-CoV-2ABSTRACT
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