Clinical Outcomes of Metformin Use in Populations With Chronic Kidney Disease, Congestive Heart Failure, or Chronic Liver Disease: A Systematic Review.

BACKGROUND: Recent changes to the U.S. Food and Drug Administration boxed warning for metformin will increase its use in persons with historical contraindications or precautions. Prescribers must understand the clinical outcomes of metformin use in these populations. PURPOSE: To synthesize data addressing outcomes of metformin use in populations with type 2 diabetes and moderate to severe chronic kidney disease (CKD), congestive heart failure (CHF), or chronic liver disease (CLD) with hepatic impairment. DATA SOURCES: MEDLINE (via PubMed) from January 1994 to September 2016, and Cochrane Library, EMBASE, and International Pharmaceutical Abstracts from January 1994 to November 2015. STUDY SELECTION: English-language studies that: 1) examined adults with type 2 diabetes and CKD (with estimated glomerular filtration rate less than 60 mL/min/1.73 m2), CHF, or CLD with hepatic impairment; 2) compared diabetes regimens that included metformin with those that did not; and 3) reported all-cause mortality, major adverse cardiovascular events, and other outcomes of interest. DATA EXTRACTION: 2 reviewers abstracted data and independently rated study quality and strength of evidence. DATA SYNTHESIS: On the basis of quantitative and qualitative syntheses involving 17 observational studies, metformin use is associated with reduced all-cause mortality in patients with CKD, CHF, or CLD with hepatic impairment, and with fewer heart failure readmissions in patients with CKD or CHF. LIMITATIONS: Strength of evidence was low, and data on multiple outcomes of interest were sparse. Available studies were observational and varied in follow-up duration. CONCLUSION: Metformin use in patients with moderate CKD, CHF, or CLD with hepatic impairment is associated with improvements in key clinical outcomes. Our findings support the recent changes in metformin labeling. PRIMARY FUNDING SOURCE: U.S. Department of Veterans Affairs. (PROSPERO: CRD42016027708).

The Armstrong Institute Resident/Fellow Scholars: A Multispecialty Curriculum to Train Future Leaders in Patient Safety and Quality Improvement.

The objective was to determine if a year-long, multispecialty resident and fellow quality improvement (QI) curriculum is feasible and leads to improvements in QI beliefs and self-reported behaviors. The Armstrong Institute Resident/Fellow Scholars (AIRS) curriculum incorporated (a) a 2-day workshop in lean sigma methodology, (b) year-long interactive weekly small-group lectures, (c) mentored QI projects, and (d) practicum-based components to observe frontline QI efforts. Pre-post evaluation was performed with the Quality Improvement Knowledge Application Tool (QIKAT) and the Systems Thinking Scale (STS) using the Wilcoxon matched-pairs signed-rank test. Sixteen residents and fellows started the AIRS curriculum and 14 finished. Scholars' pre and post mean scores significantly improved: STS 3.06 pre versus 3.60 post (P < .01) and QIKAT 1.24 pre versus 2.46 post (P < .01). Most scholars (92%) agreed that skills learned in the curriculum will help in their future careers. A multispecialty QI curriculum for trainees is feasible and increases QI beliefs and self-reported behaviors.