Kidney function monitoring using creatinine-based GFR estimation is a routine part of clinical practice. Emerging evidence has shown that cystatin C may improve classification of GFR for defining chronic kidney disease (CKD) in certain clinical populations, and assist in understanding the complications of CKD. In this review and update, we summarize the overall literature on cystatin C, critically evaluate recent high-impact studies, highlight the role of cystatin C in recent kidney disease guidelines, and suggest a practical approach for clinicians to incorporate cystatin C into practice. We conclude by addressing frequently asked questions related to implementing cystatin C use in a clinical setting.

In a cohort of patients with Fontan circulation and no history of protein-losing enteropathy who underwent catheterization, lymphopenia was common and positively associated with low platelet count. Thrombocytopenia has been shown to correlate with the degree of hepatic fibrosis in those with Fontan and, thus, hepatic fibrosis may underlie lymphopenia in these patients.

BACKGROUND AND OBJECTIVES: Safety event reporting systems facilitate identification of system-level targets to improve patient safety. Resident physicians report few safety events despite their role as frontline providers and the frequent occurrence of events. The objective of this study is to increase the number of pediatric resident safety event submissions from <1 to 4 submissions per 14-day period within 12 months. METHODS: We conducted an iterative quality improvement process with 39 pediatric residents at a children’s hospital. Interventions focused on 4 key drivers: user-friendly event submission process, resident buy-in, nonpunitive safety culture, and data transparency. The primary outcome measure of number of pediatric resident event submissions was analyzed by using statistical process control. Balancing measures included time from submission to feedback, duplicate submissions, and nonevent submissions. As a control, the primary outcome measure was monitored for nonpediatric residents during the same period. RESULTS: The mean number of pediatric resident event submissions increased from 0.9 to 5.7 submissions per 14 days. Impactful interventions included a designated space in the resident workroom to list safety events to submit, monthly project updates, and an interresident competition. There were no duplicate submissions or nonevent submissions in the postintervention period. Time to feedback in the postintervention period had both upward and downward shifts, with >8 consecutive points above and below the baseline period’s centerline. The control group showed no sustained change in event submissions. CONCLUSIONS: Our improvement process was associated with significant increase in pediatric resident safety event submissions without an increase in the number of submissions categorized as duplicates or nonevents.