2 Minute Medicine Rewind July 8 – July 14, 2013
Image: PD
In this section, we will highlight the key high-impact studies, updates, and analyses published in medicine during the past week.
In this retrospective analysis of patients in capitated and fee-for-service Medicare plans, investigators found the capitated Medicare Advantage plans had fewer angiograms (16.5 vs. 25.9 per 1000 person-years, p < 0.001) and percutaneous coronary interventions (6.8 vs. 9.8 per 1000 person-years, p < 0.001) but similar rates of coronary artery bypass graft (CABG) surgeries (3.1 vs. 3.4 per 1000 person-years, p = 0.33). There was substantial regional variation in rates for procedures in both capitated and fee-for-service Medicare programs.
Retinoic Acid and Arsenic Trioxide for Acute Promyelocytic Leukemia
In this multicenter RCT, patients with low-to-intermediate risk acute promyelocytic leukemia was randomized to all-trans retinoic acid with arsenic trioxide vs. all-trans retinoic acid with idarubicin. Complete remission was found in 77 (100%) patients treated with all-trans retinoic acid and arsenic trioxide vs. 75 (95%) patients treated with all-trans retinoic acid and idarubicin. Two year event-free survival was superior in the all-trans retinoic acid with arsenic trioxide group (97% vs. 86%, p = 0.02).
U.S. Hospitalizations for Pneumonia after a Decade of Pneumococcal Vaccination
In this retrospective analysis of US hospital admissions, investigators compared rates of pneumonia related hospitalizations between 1997-1999 (before introduction of the 7-valent pneumococcal conjugate vaccine) and 2007-2009 (after introduction of pneumococcal vaccine). The investigators found the annual rate of hospitalization for pneumonia among children younger than 2 years of age declined by 551.1 per 100,000 children (95% confidence interval [CI], 445.1 to 657.1) and the hospitalization rate for adults 85 years of age or older declined by 1300.8 per 100,000 (95% CI, 984.0 to 1617.6).
Nivolumab plus Ipilimumab in Advanced Melanoma
In this non-blinded stage I trial, 86 patients with metastatic melanoma received ipilimumab (anti CTLA-4 antibody) and nivolumab (anti PD1 receptor antibody). At maximum doses, 53% of patients had an objective response with a tumor size reduction of 80% or more.
In this multicenter RCT, investigators compared soy protein isolate vs. placebo in men after radical prostatectomy at high risk for risk of recurrence. This study was stopped early due to futility with 28.3% of subjects developing recurrence at 2 years (27.2% vs. 29.5%, p = 0.89).
By David Ouyang
© 2013 2minutemedicine.com. All rights reserved. No works may be reproduced without written consent from 2minutemedicine.com. Disclaimer: We present factual information directly from peer reviewed medical journals. No post should be construed as medical advice and is not intended as such by the authors or by 2minutemedicine.com. PLEASE SEE A HEALTHCARE PROVIDER IN YOUR AREA IF YOU SEEK MEDICAL ADVICE OF ANY SORT. Content is produced in accordance with fair use copyrights solely and strictly for the purpose of teaching, news and criticism. No benefit, monetary or otherwise, is realized by any participants or the owner of this domain.
