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These Annals of Internal Medicine results only contain recent articles.

Use of Peripherally Inserted Central Catheters in Patients With Advanced Chronic Kidney Disease: A Prospective Cohort Study: Annals of Internal Medicine: Vol 171, No 1

Background: Existing guidelines, including Choosing Wisely recommendations, endorse avoiding placement of peripherally inserted central catheters (PICCs) in patients with chronic kidney disease (CKD). Objective: To describe the frequency of and characteristics associated with PICC use in hospitalized patients with stage 3b or greater CKD (glomerular filtration rate [GFR] <45 mL/min/1.73 m2). Design: Prospective cohort study. Setting: 52 hospitals participating in the Michigan Hospital Medicine Safety Consortium. Participants: Hospitalized medical patients who received a PICC between November 2013 and September 2016. Measurements: Percentage of patients receiving PICCs who had CKD, frequency of PICC-related complications, and variation in the proportion of PICCs placed in patients with CKD. Results: Of 20 545 patients who had PICCs placed, 4743 (23.1% [95% CI, 20.9% to 25.3%]) had an estimated GFR (eGFR) less than 45 mL/min/1.73 m2 and 699 (3.4%) were receiving hemodialysis. In the intensive care unit (ICU), 30.9% (CI, 29.7% to 32.2%) of patients receiving PICCs had an eGFR less than 45 mL/min/1.73 m2; the corresponding percentage in wards was 19.3% (CI, 18.8% to 19.9%). Among patients with an eGFR less than 45 mL/min/1.73 m2, multilumen PICCs were placed more frequently than single-lumen PICCs. In wards, PICC-related complications occurred in 15.3% of patients with an eGFR less than 45 mL/min/1.73 m2 and in 15.2% of those with an eGFR of 45 mL/min/1.73 m2 or higher. The corresponding percentages in ICU settings were 22.4% and 23.9%. In patients with an eGFR less than 45 mL/min/1.73 m2, PICC placement varied widely across hospitals (interquartile range, 23.7% to 37.8% in ICUs and 12.8% to 23.7% in wards). Limitation: Nephrologist approval for placement could not be determined, and 2.7% of eGFR values were unknown and excluded. Conclusion: In this sample of hospitalized patients who received PICCs, placement in those with CKD was common and not concordant with clinical guidelines. Primary Funding Source: Blue Cross Blue Shield of Michigan and Blue Care Network.

Patterns of Opioid Administration Among Opioid-Naive Inpatients and Associations With Postdischarge Opioid Use: A Cohort Study: Annals of Internal Medicine: Vol 171, No 2

Background: Patterns of inpatient opioid use and their associations with postdischarge opioid use are poorly understood. Objective: To measure patterns in timing, duration, and setting of opioid administration in opioid-naive hospitalized patients and to examine associations with postdischarge use. Design: Retrospective cohort study using electronic health record data from 2010 to 2014. Setting: 12 community and academic hospitals in Pennsylvania. Patients: 148 068 opioid-naive patients (191 249 admissions) with at least 1 outpatient encounter within 12 months before and after admission. Measurements: Number of days and patterns of inpatient opioid use; any outpatient use (self-report and/or prescription orders) 90 and 365 days after discharge. Results: Opioids were administered in 48% of admissions. Patients were given opioids for a mean of 67.9% (SD, 25.0%) of their stay. Location of administration of first opioid on admission, timing of last opioid before discharge, and receipt of nonopioid analgesics varied substantially. After adjustment for potential confounders, 5.9% of inpatients receiving opioids had outpatient use at 90 days compared with 3.0% of those without inpatient use (difference, 3.0 percentage points [95% CI, 2.8 to 3.2 percentage points]). Opioid use at 90 days was higher in inpatients receiving opioids less than 12 hours before discharge than in those with at least 24 opioid-free hours before discharge (7.5% vs. 3.9%; difference, 3.6 percentage points [CI, 3.3 to 3.9 percentage points]). Differences based on proportion of the stay with opioid use were modest (opioid use at 90 days was 6.4% and 5.4%, respectively, for patients with opioid use for ≥75% vs. ≤25% of their stay; difference, 1.0 percentage point [CI, 0.4 to 1.5 percentage points]). Associations were similar for opioid use 365 days after discharge. Limitation: Potential unmeasured confounders related to opioid use. Conclusion: This study found high rates of opioid administration to opioid-naive inpatients and associations between specific patterns of inpatient use and risk for long-term use after discharge. Primary Funding Source: UPMC Health System and University of Pittsburgh.