In this episode, we discuss the approach to deprescribing for several drugs such as benzodiazepine receptor agonists, cholinesterase inhibitors, memantine, antipsychotics, and antihyperglycemics.

Key Concepts

1. Medication appropriateness including indication and risk vs. benefit should be evaluated for all stages of life; however, more importantly in older individuals to address polypharmacy.
2. There is an emerging trend of deprescribing networks that conduct research and provide evidence-based recommendations for how to deprescribe certain medications used for specific indications.
3. Evidence-based deprescribing guidelines for PPIs, benzodiazepines, benzodiazepine receptor agonists, opioids, antipsychotics, cholinesterase inhibitors, memantine, and antihyperglycemics are available for patient-provider shared decision making.
4. A general deprescribing approach is gradual tapering of the drug leading to discontinuation over several weeks while monitoring patients for withdrawal symptoms or benefits of discontinuation.

References

• http://deprescribing.org
• https://www.australiandeprescribingnetwork.com.au

In this episode, we review the pharmacology, pharmacokinetics, adverse effects, monitoring, medicinal chemistry, and more of loop diuretics.

Key Concepts

1. Loop diuretics (furosemide, torsemide, bumetanide, ethacrynic acid) are the most potent type of diuretic and are used to relieve edema.
2. Loop diuretics cause an increased loss of sodium, chloride, potassium, hydrogen, magnesium, and calcium ions into the urine. Excessive loss of these ions manifests as hypokalemia, hypomagnesemia, and metabolic alkalosis.
3. Loop diuretics have an S-shaped dose response curve – a minimum dose is required for diuresis and a “ceiling” effect occurs at higher doses (leading to more ADRs). Doses should be individualized based on the clinical response of the patient.
4. Ethacrynic acid is incorrectly used in patients with a “sulfa” allergy. The other loop diuretics contain a sulfa moiety but are safe for use in patients with “sulfa” allergy (e.g. allergy to sulfamethoxazole-trimethoprim).
5. The TRANSFORM-HF trial strongly suggests that there is no clinical difference between furosemide and torsemide.

References

• Rachoin JS, Cerceo EA. Four nephrology myths debunked. J Hosp Med. 2011;6(5):E1-E5. doi:10.1002/jhm.703
• Strom BL, Schinnar R, Apter AJ, et al. Absence of cross-reactivity between sulfonamide antibiotics and sulfonamide nonantibiotics. N Engl J Med. 2003;349(17):1628-1635. doi:10.1056/NEJMoa022963
• Buggey J, Mentz RJ, Pitt B, et al. A reappraisal of loop diuretic choice in heart failure patients. Am Heart J. 2015;169(3):323-333. doi:10.1016/j.ahj.2014.12.009
• Mentz RJ, Anstrom KJ, Eisenstein EL, et al. Effect of Torsemide vs Furosemide After Discharge on All-Cause Mortality in Patients Hospitalized With Heart Failure: The TRANSFORM-HF Randomized Clinical Trial. JAMA. 2023;329(3):214-223. doi:10.1001/jama.2022.23924

In this episode, we discuss principles for medication use in the geriatric patient population and summarize the updated 2023 American Geriatrics Society Beers Criteria for Potentially Inappropriate Medication Use in Older Adults.

Key Concepts

1. The Beer’s Criteria was originally developed by Dr. Mark Beers in 1991 to identify medications in which the risks may outweigh the benefits in nursing home patients. This list is now maintained by the American Geriatrics Society and includes a variety of drug safety information related to elderly patients including medications that are considered potentially inappropriate (Table 2 and 3), medications used with caution (Table 4), drug-drug interactions (Table 5), drugs with renal dose adjustments (Table 6), and drugs with anticholinergic properties (Table 7).
2. The newest update prefers apixaban over other DOACs for VTE and atrial fibrillation in elderly patients. This is a very controversial recommendation given that other guidelines (e.g. from the ACC/AHA) have not published a similar preference of one DOAC over another.
3. Many of the medications that are potentially inappropriate involve drugs that have anticholinergic properties and drugs that increase the risk of incoordination and falls.
4. Other resources exist to guide drug therapy decisions in elderly patients. As an example, the STOPP/START criteria (published in the European Geriatric Medicine journal) outlines drugs to avoid but also drugs to consider in elderly patients.

References

• By the 2023 American Geriatrics Society Beers Criteria Update Expert Panel. American Geriatrics Society 2023 Updated AGS Beers Criteria for potentially inappropriate medication use in older adults. J AM Geriatr Soc. 2023;71(7):2052-2081. doi:10.1111/jgs.18372.
• O'Mahony D, Cherubini A, Guiteras AR, Denkinger M, Beuscart JB, Onder G, Gudmundsson A, Cruz-Jentoft AJ, Knol W, Bahat G, van der Velde N, Petrovic M, Curtin D. STOPP/START criteria for potentially inappropriate prescribing in older people: version 3. Eur Geriatr Med. 2023 Aug;14(4):625-632. doi: 10.1007/s41999-023-00777-y.