HelixTalk - Rosalind Franklin University's College of Pharmacy Podcast – Details, episodes & analysis

In this episode, we review the clinical presentation, diagnosis, and treatment of uncomplicated urinary tract infections.

Key Concepts

1. Uncomplicated urinary tract infections (UTI) are defined as an infection localized to the bladder without any systemic signs or symptoms of infection in someone who is not immunocompromised, pregnant, catheterized, and has normal urologic anatomy.
2. UTIs are most commonly seen in younger women. E. coli is by far the most common urinary pathogen. Symptoms alone drive most of the diagnosis of UTI; however, urinalysis and urine culture can be helpful in some circumstances.
3. Nitrofurantoin (Macrobid) is recommended for men and women for first-line therapy in most patients. Fosfomycin, Bactrim, pivmecillinam, and certain B-lactams can be considered in certain circumstances. Women are usually treated for 3-5 days and men 5-7 days.
4. Some evidence suggests inferior clinical outcomes for B-lactam; however, the amount of data in general is lacking for B-lactams. Recommended B-lactams (aside from pivmecillinam) include amoxicillin/clavulanate, cephalexin, cefadroxil, cefpodoxime, and cefdinir.

References

1. Nelson Z, Aslan AT, Beahm NP, et al. Guidelines for the Prevention, Diagnosis, and Management of Urinary Tract Infections in Pediatrics and Adults: A WikiGuidelines Group Consensus Statement. JAMA Netw Open. 2024;7(11):e2444495. Published 2024 Nov 4. doi:10.1001/jamanetworkopen.2024.44495
2. Gupta K, Hooton TM, Naber KG, et al. International clinical practice guidelines for the treatment of acute uncomplicated cystitis and pyelonephritis in women: A 2010 update by the Infectious Diseases Society of America and the European Society for Microbiology and Infectious Diseases. Clin Infect Dis. 2011;52(5):e103-e120. doi:10.1093/cid/ciq257
3. Kurotschka PK, Gágyor I, Ebell MH. Acute Uncomplicated UTIs in Adults: Rapid Evidence Review. Am Fam Physician. 2024;109(2):167-174.
4. https://www.wikiguidelines.org/

In this episode, we review the pharmacology, indications, adverse effects, and unique drug characteristics of 5-HT3 receptor antagonists such as ondansetron (Zofran) and palonosetron (Aloxi).

Key Concepts

1. There are four 5-HT3 (serotonin subtype 3) receptor antagonists on the market: ondansetron, granisetron, dolasetron, and palonosetron. These have primarily been studied for acute chemotherapy-induced nausea and vomiting (within 24 hours of chemotherapy administration) and for post-operative nausea and vomiting.
2. When used for chemotherapy-induced nausea/vomiting, 5-HT3 receptor antagonists are given prior to chemotherapy (usually 30-60 minutes before) on day #1. They are not given on subsequent days because they are not as effective for delayed nausea and vomiting.
3. Palonosetron has the longest half-life, longer binding affinity to the 5-HT3 receptor, and trends towards having the best efficacy among the 5-HT3 receptor antagonists.
4. 5-HT3 receptor antagonists are associated with QTc prolongation and may cause headache, dizziness, constipation, or diarrhea. Their association with an increased risk of serotonin syndrome is controversial and not supported from a mechanistic perspective.

References

• Simino GP, Marra LP, Andrade EI, et al. Efficacy, safety and effectiveness of ondansetron compared to other serotonin-3 receptor antagonists (5-HT3RAs) used to control chemotherapy-induced nausea and vomiting: systematic review and meta-analysis. Expert Rev Clin Pharmacol. 2016;9(9):1183-1194. doi:10.1080/17512433.2016.1190271
• Tricco AC, Soobiah C, Blondal E, et al. Comparative efficacy of serotonin (5-HT3) receptor antagonists in patients undergoing surgery: a systematic review and network meta-analysis. BMC Med. 2015;13:136. Published 2015 Jun 18. doi:10.1186/s12916-015-0371-y
• Hesketh PJ, Kris MG, Basch E, et al. Antiemetics: ASCO Guideline Update. J Clin Oncol. 2020;38(24):2782-2797. doi:10.1200/JCO.20.01296
• Herrstedt J, Clark-Snow R, Ruhlmann CH, et al. 2023 MASCC and ESMO guideline update for the prevention of chemotherapy- and radiotherapy-induced nausea and vomiting. ESMO Open. 2024;9(2):102195. doi:10.1016/j.esmoop.2023.102195
• Rojas-Fernandez CH. Can 5-HT3 Antagonists Really Contribute to Serotonin Toxicity? A Call for Clarity and Pharmacological Law and Order. Drugs Real World Outcomes. 2014;1(1):3-5. doi:10.1007/s40801-014-0004-3
• Li WS, van der Velden JM, Ganesh V, et al. Prophylaxis of radiation-induced nausea and vomiting: a systematic review and meta-analysis of randomized controlled trials. Ann Palliat Med. 2017;6(2):104-117. doi:10.21037/apm.2016.12.01

In this episode, we review the recommendations from the 2024 SCCM/ASHP stress ulcer prophylaxis guidelines and highlight three of the more recent landmark critical care trials investigating the role of stress ulcer prophylaxis.

Key Concepts

1. After 25 years, the stress ulcer prophylaxis guidelines have been updated by SCCM and ASHP. These guidelines make 13 recommendations in a PICO format.
2. Three large, landmark randomized controlled trials (SUP-ICU, PEPTIC, and REVISE) have significantly contributed to the body of literature regarding stress ulcer prophylaxis.
3. The SCCM/ASHP guidelines recommend stress ulcer prophylaxis in patients with coagulopathy, shock, chronic liver disease, and possibly in neurocritical care patients. They do not specifically recommend prophylaxis in mechanically ventilated patients; this is a controversial recommendation.
4. The SCCM/ASHP guidelines equally prefer proton pump inhibitor (PPI) and histamine-2 receptor antagonists (H2RA) drug therapies given either intravenously or orally. The prophylaxis regimen should be continued until the indication for prophylaxis has resolved or the patient leaves the ICU.

References

• MacLaren R, Dionne JC, Granholm A, et al. Society of Critical Care Medicine and American Society of Health-System Pharmacists Guideline for the Prevention of Stress-Related Gastrointestinal Bleeding in Critically Ill Adults. Crit Care Med. 2024;52(8):e421-e430. doi:10.1097/CCM.0000000000006330
• SUP-ICU study. Krag M, Marker S, Perner A, et al. Pantoprazole in Patients at Risk for Gastrointestinal Bleeding in the ICU. N Engl J Med. 2018;379(23):2199-2208. doi:10.1056/NEJMoa1714919
• PEPTIC study. PEPTIC Investigators for the Australian and New Zealand Intensive Care Society Clinical Trials Group, Alberta Health Services Critical Care Strategic Clinical Network, and the Irish Critical Care Trials Group, Young PJ, Bagshaw SM, et al. Effect of Stress Ulcer Prophylaxis With Proton Pump Inhibitors vs Histamine-2 Receptor Blockers on In-Hospital Mortality Among ICU Patients Receiving Invasive Mechanical Ventilation: The PEPTIC Randomized Clinical Trial. JAMA. 2020;323(7):616-626. doi:10.1001/jama.2019.22190
• REVISE study. Cook D, Deane A, Lauzier F, et al. Stress Ulcer Prophylaxis during Invasive Mechanical Ventilation. N Engl J Med. 2024;391(1):9-20. doi:10.1056/NEJMoa2404245

In this episode, we will review the pharmacology, efficacy, and safety of the most common NSAIDs on the market.

In this episode, we discuss the changes made in the American Diabetes Association's 2019 Standards of Diabetes Care guideline as well as updates in therapy recommendations per ADA and ESDA consensus statement published in Fall 2018.

In this episode, we take a deep dive into the use of stimulants and other medications for management of ADHD. After decades of use, technology has resulted in changes to how they are administered. Furthermore new agents have become available, but are they an improvement?

In this episode, we discuss IV fluids for hospitalized patients, including normal saline (0.9% NaCl) and lactated ringer's. In addition, we review the newest literature supporting the use of balanced crystalloids over normal saline from the SMART and SALT-ED trials.

In this episode, we are excited to have a special guest with us. Dr. Dyson Wake is Senior Clinical Specialist in Pharmacogenomics at NorthShore University HealthSystem's Center for Molecular Medicine here in Chicagoland and is here to explain the current and future applications of pharmacogenomics to the area of personalized medicine, as well as expose some misconceptions.

In this episode, we review some of the most important new recommendations from the 2018 ACC/AHA guidelines for the management of blood cholesterol.

In this episode, we will review the FDA's Unapproved Drugs Initiative and how it has impacted the availability and pricing of commonly used (but old) medications, such as colchicine and vasopressin.