Transcript Document
Complex, Frail Elderly Presentation Kim Jany Primary Care Pharmacist Surrey and Sussex CSU Working for Guildford and Waverley CCG April 2013 BGS Definition of Frail, Elderly • Aged over 75, often over 85, with multiple diseases, which may include dementia • Tend to present to hospital with symptoms such as falls, immobility and confusion • Their functional reserve is reduced making them additionally vulnerable to developing complications while in hospital Surrey Facts • Surrey has a higher proportion of older people compared with England. The 2010 census data shows that Waverley has the highest % of over 85s in Surrey and 2nd highest % of over 65s. • Life expectancy in Surrey - Guildford and Waverley is high at 84 years for women and 81 years for men, almost two years longer than the average for England. Kings Report updated Apr 13 medicines management – a top 10 priority for commissioners • Four out of five people aged over 75 years take a prescription medicine and 36% are taking four or more (Department of Health 2001). • The average number of medicines prescribed for people aged 60 years and over in England almost doubled from 21.2 to 40.8 items per person per year in the ten years to 2007 (Information Centre 2007). Age Related Pharmacokinetics Absorption particularly important to consider the effects of any coprescribed drugs on absorption eg calcium reduces absorption of bisphosphonates, levothyroxine Distribution reduced volume of distribution of water soluble drugs, e.g. digoxin (which may lead to increased initial drug concentration) increased volume of distribution of lipid soluble drugs, e.g. benzodiazepines (which may lead to increased elimination half-life and prolonged effect). Elimination Drugs metabolised in liver oxidation, reduction and hydroxylation, largely performed by the mixed function oxidases such as cytochrome P450 are reduced as reduced hepatic blood flow (35% reduction in hepatic blood flow in the elderly) reduced hepatic volume (hepatic volume is reduced by 28% in men and 44% in women by the age of 91) Drugs metabolised in the kidney reduced glomerular function - GFR is reduced by 6 to 10% per decade after the age of 40 reduced tubular function which means that by the age of 90 there may be a 30 to 40% reduction in overall renal function This results in reduced clearance of drugs which are mainly excreted via filtration at the kidney Coexisting disease • Renal failure results in reduced secretion resulting accumulation of the drug increased length of time to reach steady state plasma levels (takes approximately 5 half-lives) • Congestive cardiac failure results in reduced absorption (due to mucosal oedema, reduced epithelial blood supply and splanchnic vasoconstriction) reduced volume of distribution (due to decreased tissue perfusion) reduced elimination (due to reduced hepatic blood flow, reduced oxidising capacity as a result of hypoxia, reduced GFR and increased tubular reabsorption). Adverse drug reactions ADRs increase steadily in incidence with age due to pharmacokinetic and pharmacodynamic changes impairment of homeostatic mechanisms o baroreceptor responses o control of body sway o thirst o volume regulation o glucose and electrolyte control o Thermoregulation Studies show that 10% or more of elderly patient hospital admissions are due to ADRs. Alarm Bell Drugs • NSAIDs – increased risk of bleed, increased risk of CV and renal complications • Diuretics – risk of excessive diuresis leading to orthostatic hypotension, dehydration, renal and electrolyte imbalance • ACE / ARBs - hypotension, angioedema, hyperkalaemia, renal or hepatic impairment • SSRI – increased risk GI bleed • Metformin – lactic acidosis – review if Egfr <45ml/min/1.73m² , stop if <30ml/min/1.73m² Compliance • An elderly person whose mental function is intact is no more likely to make mistakes with their medication than a younger person. • Polypharmacy does make errors more likely • Deliberate non-compliance failing to take prescribed medication as frequently as directed or not at all taking a larger dose in the mistaken belief that it will be more therapeutic or lead to a faster cure hoarding drugs for future unauthorised use self-prescribing with over-the-counter preparations Improve adherence • Explore non-intentional adherence and find solutions with patient ability to read, swallow, open bottles, use inhaler devices or insulin pens and testing equipment Try out devices to improve adherence, e.g. haleraids, spacers, medicine record card, large print labels • Explore reasons for intentional non-adherence Provide rationale and teaching behind prescriptions where appropriate Develop plan with patient as to how to proceed e.g. alternative agent, different formulation, different packaging Discontinued • Intralgin gel • Fybogel sachets • Vitamin BPC caps • Flixonase spray • Doxazosin 2mg • Dipyridamole (b/4 NICE) • Movicol • NaCl irrigation solution Mrs EE, 90yrs old •Lives with daughter •Forgetful, otherwise good health •17 medicines, daughter thinks they are too many •Only taking 4 laxatives! •Doesn’t like BP tabs thinks they make her drowsy •Doesn’t remember to take afternoon dose Continued • Thyroxine 50mcg • Bendroflumethiazide 2.5 • Perindopril • Senna • Lactulose • Aspirin • Digoxin • Simvastatin • Timoptol eye drops Polypharmacy Polypharmacy itself should be conceptually perceived as a “disease” with potentially more serious complications than those of the diseases these different drugs have been prescribed for Doran Gafinkel 2010 Guilty or not guilty Guilty • Discontinue • Reduce dose/frequency/prn • Substitute with a safer drug/formulation, schedule • Wait and see, review after a period Not Guilty • Continue Reducing polypharmacy is everybody’s business • Focus on patients with the highest medication related risks and morbidities • For individual patients, focus on the drugs with the highest risks or highest benefits • Share the workload with others e.g dieticians/sip feed, TVN/ dressing, incontinence adviser/antiholinergics, CMHT/ antipsychotics, sleep clinics, pain clinics etc • Patients, Relatives, carers, community pharmacists, OTs nurses etc can monitor drug effects and feedback Establish the patient’s overall care goals Treat the patient not just the disease! •What outcomes are we working towards with the patient? •Medicines optimisation goals must fit into overall goal, not work against it Frail, elderly checklist Ensure an accurate diagnosis Question necessity for the drug. Avoid inappropriate and over enthusiastic treatment. Consider the patient as a whole. Can nonpharmacological alternatives be used instead? Has the most suitable drug been chosen for the patient? Is the dose correct? Start low and titrate carefully Consider risk of drug interactions Ensure a thorough drug history is taken, including OTC medication Does the patient suffer from another disease for which the drug in question is contraindicated? Is the treatment regimen as simple as possible? Has the patient and any carer been counselled about the treatment and do they understand how to take the drugs and for how long? Appropriate prescribing, Avoidable Waste? Useful websites / resources • http://www.cumbria.nhs.uk/ProfessionalZone/Medicines Management/Guidelines/StopstartToolkit2011.pdf • http://www.nhshighland.scot.nhs.uk/Publications/Docum ents/Guidelines/id1214%20%20Polypharmacy%20Guida nce%20for%20Prescribing%20in%20Frail%20Adults.pdf • http://cks.nice.org.uk/ • http://www.evidence.nhs.uk/ So we know why we should reduce polypharmacy But how? Dr Sarah Taylor-Smith, Frail Elderly Medication Reviews • By definition these patients have multiple diagnosis. They will collect medications from secondary care out patients and inpatient stays. • QOF criteria/ targets may add to their polypharmacy. • Medication review in these patients is an important tool. Medication Review • Qof requirement/ GMC guidance • Opportunity to ensure problem coding correct • Can be used to have patient focused conversation • If on a visit recording may be difficult • Probably already doing this but are we recording and communicating? 3 C’s for medication review • Clear • Considered • Compliance Medication review: Clear Clear: for the GP. Which medication for which diagnosis eg ACE for LVF or BP. Linking with Emis web Clear: for the patient, carers, out of hours clinical staff. NHS spine. Pitfalls- Heart Failure/ Renal failure understanding of terms. Confidentiality Medication Review: Considered • Considered: is treatment symptomatic, secondary prevention, primary prevention? Do we need to treat? • Considered: evidence base in this age group. Adverse affects eg Bp and postural hypotension. • Considered: Patients wishes.eg Statin in the “world weary.” May give an opening to talk through anticipatory care plan Medication Review: Compliance • Compliance: Formulation, stockpiling, dosing schedule, repeat intervals, arrangement with pharmacy. • Compliance: Care home/nursing home drug error reporting/ audit trail. Medication changes communication. Clear, Considered, Compliant • Patient centered approach to reduce medications for complex group of patients • Clear communication on notes • On NHS spine When to review? • On discharge from hospital • On arrival to new GP, new care home, nursing home • QOF yearly review • Audit? • Workload implications.