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Blood & Cancer

71 EpisodesProduced by MDedge Hematology OncologyWebsite

Interview-style hematology/oncology podcast from MDedge Hematology-Oncology. The show is hosted by Dr. David Henry with Pearls from Dr. Ilana Yurkiewicz for clinical hematology and oncology health care professionals. The information in this podcast is provided for informational and educational purpo… read more


Polypharmacy in older cancer patients

Ginah Nightingale, PharmD, of the Jefferson College of Pharmacy at Thomas Jefferson University in Philadelphia chats with David H. Henry, MD, host of Blood & Cancer, about the definition of polypharmacy and the challenges it poses in treating older cancer patients.

Plus, in Clinical Correlation, Ilana Yurkiewicz, MD, of Stanford (Calif.) University, talks about the waiting that cancer patients face.

Show notes

  • Older adults comprise about 15% of the total population but account for more than 33% of prescription drug use.
  • Polypharmacy can be defined as taking five or more medications (prescription and nonprescription), as well as being on medications that have adverse effects in older adults.
  • Older adults are at increased risk for adverse effects from polypharmacy for multiple reasons, including multiple comorbidities and altered drug metabolism.
  • In a study by Nightingale et al., 61% of patients already had a major drug-drug interaction on their medication list prior to initiation of cancer therapy.
  • In a study by Sharma et al., 22% of patients were taking proton pump inhibitors concurrently with tyrosine kinase inhibitors, an interaction that was associated with increased risk of death at 90 days and 1 year.
  • Patients who receive medications from multiple pharmacies, such as a specialty pharmacy for oncologic drugs, are at increased risk of polypharmacy errors.
  • Tools to screen for polypharmacy include:
  • Considerations such as patient’s life expectancy and quality-of-life goals should be taken into account when deciding which medications are necessary and what may be deprescribed.
  • Clinicians should encourage patients to bring in all medications to every doctor’s visit, and certainly at the time of initiation of cancer treatment.

Show notes by Sugandha Landy, MD, resident in the department of internal medicine, University of Pennsylvania, Philadelphia.


Additional reading

American Geriatrics Society 2019 Updated AGS Beers Criteria for potentially inappropriate medication use in older adults. J Am Geriatr Soc. 2019 Apr;67(4):674-94.

O'Mahony Denis et al. STOPP/START criteria for potentially inappropriate prescribing in older people: Version 2. Age Ageing. 2015 Mar;44(2):213-8.

Nightingale G et al. Evaluation of a pharmacist-led medication assessment used to identify prevalence of and associations with polypharmacy and potentially inappropriate medication use among ambulatory senior adults with cancer. J Clin Oncol. 2015 May 1;33(13):1453-9.

Sharma M et al. The concomitant use of tyrosine kinase inhibitors and proton pump inhibitors: Prevalence, predictors, and impact on survival and discontinuation of therapy in older adults with cancer. Cancer. 2019 Apr 1;125(7):1155-62.


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Interact with us on Twitter: @MDedgehemonc

David Henry on Twitter: @davidhenrymd

Ilana Yurkiewicz on Twitter: @ilanayurkiewicz

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