Evaluation of a health system-wide pharmacist-driven emergency department laboratory follow-up and antimicrobial management program.

BACKGROUND: Emergency Department (ED) follow-up programs ensure that cultures, laboratory studies, and empiric antimicrobials are appropriately managed post-discharge. We sought to provide a comprehensive assessment of a pharmacist-driven laboratory follow-up process in a large, integrated health system. METHODS: A retrospective, observational review of 13 EDs was conducted. Patients were included if they had a laboratory study sent from the ED between December 1, 2017 and May 31, 2018 that did not result while the patient was in the ED. Microbiology results analyzed were urine, wound, respiratory, stool, throat, bacterial vaginosis, vaginal candidiasis, and sexually transmitted infections (STI). Examples of laboratory results assessed were metabolic panels and drug levels. The primary objective was to quantify the number of interventions made by pharmacists. RESULTS: During a 6-month period, pharmacists reviewed 9107 microbiology results and 6211 laboratory results. The majority of results were urine cultures (3998, 50.6%) followed by STI results (1198, 15.2%). Of 7663 encounters, 39.8% required interventions and/or follow-up with a total of 3049 interventions made and 3333 patients educated. The most common interventions were initiation of therapy (1629, 53.4%), change in medication (505, 16.6%), and follow-up with a clinician (322, 10.6%). Pharmacists reviewed microbiology results and completed interventions in a median of 25.3 h from the time the result was received in the electronic health record. CONCLUSION: Almost 40% of ED encounters required an intervention after discharge. A pharmacist led laboratory follow-up program is an important adjunct to facilitating stewardship and culture management in the ED.

Direct patient care activities and interventions of emergency medicine pharmacists.

Background Emergency medicine (EM) pharmacists are increasingly recognized as integral team members in the care of emergency department (ED) patients but there is variability in the scope of direct patient care services. Objectives The primary objective was to categorize direct patient care activities and drug therapy recommendations. The secondary objectives were to categorize recommendations based on drug class and to determine the proportion of recommendations associated with Institute for Safe Medication Practices (ISMP) high-alert medications. Methods This retrospective, single-center, chart review was conducted in an academic ED with 65,000 annual visits. EM pharmacists documented direct patient care activities in the electronic health record. Documented activities from 1/1/2015 through 3/31/2015 were abstracted electronically for analysis by a trained reviewer. Results There were 3567 interventions and direct patient care activities documented. The most common activities were facilitation of medication histories (n = 1300) and drug therapy recommendations (n = 1165). Of 1165 drug therapy recommendations, 986 were linked to a drug class such as antimicrobial agents (31.9%), cardiovascular agents (16.6%), and analgesic agents (13.2%) and 20% of these interventions were associated with ISMP high-alert medications. Conclusion EM pharmacists documented several types of direct patient care activities with the majority being drug therapy recommendations and medication histories.

Ceftriaxone Potentiates Warfarin Activity Greater Than Other Antibiotics in the Treatment of Urinary Tract Infections.

BACKGROUND: The cephalosporin class has been associated with an increased risk of bleeding among elderly patients receiving warfarin. Urinary tract infections (UTI) are the most prevalent infection in elderly patients. OBJECTIVE: To determine the extent of interaction between antibiotics used in the treatment of UTI, particularly specific cephalosporins and warfarin. METHODS: A retrospective chart review was conducted on chronic warfarin patients with a diagnosis of UTI treated with ceftriaxone, a first-generation cephalosporin, penicillin, or ciprofloxacin. The primary outcome was the comparison of the extent of international normalized ratio (INR) change from baseline between each antibiotic group. RESULTS: The ceftriaxone group was found to have a statistically significant higher peak INR value compared to all other studied antibiotics (ceftriaxone: 3.56, first-generation cephalosporins: 2.66, penicillins: 2.98, ciprofloxacin: 2.3; P = .004), a statistically significant greater extent of change in INR value (+1.19, +0.66, +0.8, +0.275; P = .006), and a statistically significant greater percentage change in INR value when compared to ciprofloxacin (54.4% vs 12.7%; P = .037). CONCLUSION: Ceftriaxone interacts with warfarin to increase a patient's INR value more than other commonly administered antibiotics for UTI treatment. Other antibiotics should be preferred for UTI treatment in patients on warfarin.