PEM Source

Your source for all things Pediatric Emergency Medicine

All posts with tag: "scholarly-activity"

Tips and Tricks

You know PECARN has done some trial relevant to the patient you’re seeing; you just can’t remember the trial, or the results… You wonder if the inclusion/exclusion criteria matches your patient at all. The amazing P3 team at AliEM has developed an app, available for iOS or Android, that summarizes the 140+ PECARN publications! The publications are organized into categories. Find out all about this awesome resource here

PEM Questions

(Click the link to comment and to vote - voting not working through email, sorry!) You are studying a new rapid flu test’s performance in your ED. Using PCR as a gold standard, you studied 100 kids at the peak of flu season, of whom 60 had influenza and 40 did not. Of the 60 who had influenza by PCR, 54 had a positive rapid flu test, and of the 40 who did not have influenza by PCR, 2 had a positive rapid flu test. [yop_poll id="74"]
(Click the link to comment and to vote - voting not working through email, sorry!) An investigator wishes to know whether PED patients seen with bloody diarrhea are prescribed antibiotics in the PED are more likely to develop hemolytic uremic syndrome (HUS). Over a 10-year period, several cases of patients with HUS diagnosed after a PED visit for diarrhea are identified, and for each of these patients, 3 other patients seen in the PED for diarrhea that did not develop HUS matched for age, gender, duration of illness, and stool culture findings are identified. The two groups of subjects are compared regarding whether they received PED antibiotics or not. [yop_poll id="69"]
(Click the link to comment and to vote - voting not working through email, sorry!) You design a study to compare a new antiviral to treat herpangina to placebo. During the trial, some of the parents stop giving their children the new drug because it tastes bad, and some (but fewer) parents stop giving their children the placebo because they forget to give it. During the analysis, you compare the outcomes based on the patients’ assignment to their original group. [yop_poll id="52"]
(Click the link to comment and to vote - voting not working through email, sorry!) You design a trial comparing two different techniques for draining skin abscesses: standard I&D with packing vs. loop drainage. Your chosen outcome is the proportion of patients that require a second drainage procedure. You expect to enroll 100 patients in each group, and expect an average of 10% to require a second drainage procedure. [yop_poll id="41"]
You are conducting a study to compare the efficacy of a new bronchodilator against standard albuterol therapy in patients with acute asthma exacerbations. To reduce the possibility of selection bias in your study, the key element in your study design is: A. Blinding study participants so that they do not know which treatment has been selected for them, and do not change their subjective assessment of improvement in asthma symptoms B. Enrolling sufficient numbers of study participants to ensure an accurate estimate of the difference in treatment effects C. Randomizing study participants to ensure that the two groups studied are equivalent in potential confounding factors D. Only enrolling study participants > 2 years old, to avoid selecting bronchiolitis patients instead of asthma patients Also, if you’re interested in the Peds ID Antibiotics Question of the Week, you can find it here
In a population of 1,000 people, 100 have a disease. A test is positive in 95 people with the disease and 100 people without the disease. What is the sensitivity, specificity, and positive predictive value of this test?

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