appropriate medications for the elderly
TRANSCRIPT
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Appropriate medications for the elderly
Fred Rubin, MDProfessor of Medicine
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Financial disclosures:
none
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Today’s agenda
•how prescribing is different in the elderly•Why it matters• Some helpful tools• Examples of deprescribing opportunities
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All substances are poisonous, there is none which is not a poison; the right dose differentiates a poison from a
remedy.
Paracelsus, 1538
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Factors affecting prescribing in the elderly
• Normal physiologic changes of aging• Pathological changes (x: diabetes)• Lifestyle factors, such as obesity, exercise, smoking, alcohol intake• Enhanced vulnerability to side effects• Polypharmacy increases the likelihood of drug-drug interactions and
bad outcomes
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Pharmacokinetic changes of normal aging
1. Change in body composition1. Decreased lean body mass, decreased water, increased fat
2. Decreased renal function3. Changes in hepatic metabolism
1. Decreased blood flow and decreased redox reactions4. Loss of cellular receptors5. Decreased gastrointestinal absorption
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Age-related pharmacodynamic changes
• Alterations in cell receptors and function• Change in responsiveness of target organ• Change in homeostatic mechanisms• Postural control• Orthostasis• Thermoregulation• Visceral muscle function
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Use of medications by age
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The desire to take medicine is one feature which distinguishes man, the animal, from his fellow creatures.
William Osler, 1895
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Garber, J et al. “Medication Overload: America’s other drug problem”, Lown Institute, 2019.
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Consequences of medication overload
• Adverse drug events• Medication nonadherence• Costs• Increased mortality• Decreased physical function, ADL and IADL abilities
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Garber, 2019
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Adverse Drug Events
Side effectsOverdosageImmunologic/allergicDrug-disease interactionDrug-drug interactionIdiosyncratic
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Garber, 2019
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The Beers Criteria
Mark Beers, MD 1954-2009
First version of Potentially Inappropriate
Medications (PIMs) 1991
Adopted by American Geriatrics Society
2011
Most recent version published 2019
American Geriatrics Society, J Am Geriatr Soc 67:674-694, 2019.
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AGS Beers Criteria
• Guidelines, not rules. Always use your clinical judgment.• Criteria change as new evidence accumulates. • Important drug-drug interactions:• 2 RAS inhibitors (ACE-I, ARB, etc.) and hyperkalemia• 2 anticholinergics• Lithium + diuretics• Warfarin + antibiotics
• Avoid with decreased renal function:• Ciprofloxacin• Trimethoprim-sulfamethoxazole• DOAC’s
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AGS Beers Criteria
• Strong anticholinergic drugs to avoid:• Disopyramide• Amitriptyline• Paroxetine• First generation antihistamines, esp diphenhydramine
• Additions for 2019:• Glimepiride (long acting hypoglycemic agent)• Tramadol (associated with SIADH)• Dextromethorphan/quinidine
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Budnitz, DS et al. N Engl J Med 2011;365:2002-2012.
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STOPP/START criteria
• Expert consensus panel from Europe, first published 2008, revised 2014. Total 114 criteria.• STOPP examples:• Digoxin for HFpEF• NSAID with warfarin or DOAC• Androgens without hypogonadism
• START examples:• Warfarin or DOAC for atrial fibrillation• DMARD for active rheumatoid arthritis• Bisphosphonate for osteoporosis
O’Mahony, D et al. Age and Ageing 2015;44:213-218
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Garber, 2019
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I firmly believe that if the whole materia medica, as now used, could be sunk to the bottom of the sea, it would be
all the better for mankind---and all the worse for the fishes.
Oliver Wendell Holmes, MD 1860
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Drug prices are rising
• 20% of Medicare patients failed to fill a new prescription within 30 days. For co-pays > $50, half did not fill a prescription. • Franklin et al., JGIM 2018;33(11):1877-1884
• 35% of patients approved for a PCSK9 inhibitor did not fill the prescription due to co-pay costs. For co-pay > $350, 75% did not fill.• Navar et al., JAMA Cardiology 2017;2(11):1217-1225
• Most popular brand-name prescription drugs have raised prices by average 9.5% annually over past 5 years.• Wineinger, NE et al., JAMA Network Open 2019;2(5):e194791
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Prescribing Cascade
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Stop the prescribing cascade
• Consider that any new symptom could be medication-related• Examples:• Diarrhea from sertraline , donepezil, or a PPI• Constipation from a calcium channel blocker or an overactive bladder med• Myalgias from statin• Confusion from any recently added medication
• Trial of dose reduction or elimination of a med• Aim to discontinue as many meds as you start
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Mis-use
• 157,517 members over age 65 in one of 10 HMOs across the country
• 28.8% received at least one of 33 potentially inappropriate meds in 2000-01
• 5% received one of the “always avoid” meds. 7% received propoxyphene (Darvon).
• Results unchanged from a similar study done 5 years earlier.
Simon,SR, et al., JAGS 53:227-232;2005
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Mis-use
• Retrospective cohort study of 493,971 patients over age 65 admitted to 384 U.S. hospitals between 2002-2005• 49% received at least one potentially harmful med, while 6% received
3 or more• Wide variability across hospitals and between doctors.
Rothberg, MB, J. Hospital Med 2008;3(2):91-102.
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EOL mis-use
• 58,415 Swedish decedents from conditions amenable to palliative care over age 75 in calendar year 2015• Mean age 87, 56% female, 42% residents of nursing homes• 60% had >= 6 comorbidities• Final 3 months of life:• Average 8.9 medications• 32% continued a drug of questionable benefit• 14% had initiation of a drug of questionable benefit
• Examples: statins, donepezil, alendronate, calcium, vitamin D
Morin, L et al. Palliative Medicine 2019;doi 10.1177/0269216319854013.
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Reducing harmful medications at Baylor
Adeola, M et al, JAGS 2018;66:1638-1645.
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Powerchart alerts at UPMC
• Alprazolam (Xanax)• Diphenhydramine (Benadryl)• Dicyclomine (Bentyl)• Cyclobenzaprine (Flexeril)• Methocarbamol (Robaxin)• Perphenazine (Trilafon)
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Deprescribing model in multimorbidity
Linsky, A et al, JAGS 2019; doi: 10.1111/jgs.16136.
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Model for Medication Appropriateness
Holmes, HM et al. Arch Internal Medicine 2006;166:605-609.
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An example of inappropriate prescribing:
The time to benefit exceeds the projected life
expectancy, and the Goals of Care are aggressive
considering life expectancy.
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Life expectancy by ageUnited States, 2016
Age Male Female0 76 8165 18 2070 14 1775 11 1380 8 1085 6 790 4 595 3 3.4100 2 2.5105 1.6 1.8
www.ssa.gov/oact/STATS/table4c6.html
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prognosis
• Actuarial tables must be altered for social determinants of health and other patient characteristics• Multiple prognostic indices• ePrognosis.ucsf.edu
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ASPREE trial(Aspirin in Reducing Events in the Elderly)
• 19,114 patients over age 70 randomized to ASA 100 mg qd vs placebo
• 50 sites in United States and Australia
• Composite end point of death, dementia, or physical disability
• Secondary end points: MI, stroke, cancer, depression, bleeding and mild cognitive impairment
• Mean follow-up 4.7 years
• Major bleeding hazard ratio 1.38 in aspirin group
McNeil, JJ et al. N Engl J Med 2018;379:1499-1508.
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Some advice for patients
• Know what you take, and why you take it. Keep a list.• If your doctor suggests a new medication, ask the purpose, and ask if
you can now stop an existing medication.• Make sure your doctor knows all the drugs you are taking, including
over-the-counter, herbs, and vitamins.• Don’t take other people’s medications.• Take all the antibiotics in the bottle, even if you are feeling better.• Safely dispose of out-dated medications
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Helpful websites
• Choosing wisely.org• ABIM lists of recommendations
• https://onlinelibrary.wiley.com/doi/abs/10.1111/jgs.15767• Beers Criteria, published by the American Geriatrics Society
• https://academic.oup.com/ageing/article/44/2/213/2812233• START and STOPP criteria
• Deprescribing.org• Canadian Deprescribing Network
• Medstopper.com• Tool for deprescribing from University of British Columbia
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Summary
• Start low and go slow with new medications• Changes of normal aging• Multimorbidity• Polypharmacy
• Avoid potentially inappropriate medications (PIMS)• Consider that a new symptom might be a drug effect• Deprescribe when possible• Be mindful of high prices
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