David Wright Professor of Pharmacy practice University of East Anglia

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Presentation transcript:

David Wright Professor of Pharmacy practice University of East Anglia Medicines Management in patients with dysphagia: Considerations and clinical implications David Wright Professor of Pharmacy practice University of East Anglia

Presentation Personal history Prevalence Observation of practice Hospital wards Drug absorption Different types of tablet Summary

Personal history Practising community pharmacist 1992 to 2016 PhD: Clinical pharmacy services in care homes Interest in dysphagia started in 2000 Massive Open On-Line Course ‘Dysphagia: Swallowing Difficulties and Medicines’ Book Prescribing Medicines for Patients with Dysphagia Website www.swallowingdifficulties.com

National UK survey 2002 Regional care home nurse training days 540 nurses response to frequency of crushing medicines

The beautiful tablet

10% less chance No effect 10% increased chance 100% increased chance What is the effect of dysphagia on likelihood of medication administration errors? QD1 10% less chance No effect 10% increased chance 100% increased chance 300% increased chance

Observation of ward rounds 4 hospitals, 8 wards 2129 drug administrations observed 817 had an error 313 involved patients with dysphagia Patients with at least one Medication Administration error Without dysphagia 14% With dysphagia 33% (p<0.001) With enteral tubes 56% (p<0.001) Administrator was last line of defence

Wrong formulation 8 patients chewing modified release medicines Swallowing problem not previously identified Tablets crushed in 24 cases No modified release preparations Without the prescriber’s authorisation Seven cases licensed liquid formulation available Enteral tube not flushed in 36 cases

Swiss cheese model

Drug Absorption

Modified release absorption

Modified release crushed

Enteric coatings Release at higher PH Remove coating To protect stomach To protect the medicine To deliver medicine to appropriate location Remove coating Cause adverse drug reaction Reduce medicine efficacy

Film or sugar coatings Film or sugar coatings To mask flavour Quinine To protect from skin sensitisation Chlorpromazine To protect from environment during storage

Which of these can be safely crushed or opened? Ibuprofen tablets Methotrexate tablets Diclofenac ec tablets Mesalazine ec tablets Dipyridamole m/r capsules

Wrong preparation 65 preparation errors including: Measuring 2.5mL dose of oramorph using cup Inappropriate syringes used via enteral tube Frequent non-flushing enteral tubes 26 cases of mixing different medicines together before dispersing

Is it safe to mix medicines with thickeners? QD3 I have absolutely no idea There is no evidence to support doing so There is evidence suggesting that it can stop medicines from being absorbed D. Is it safe not to? E. Probably, if you monitor for efficacy

Summary Dysphagia creates medication errors Consider medicine, route, formulation, thickness Consider legality and covert administration Seek pharmacist advice prior to crushing Options Safety Crush and mix - monitor

My main learning point is: QD4 a) Dysphagia increases medication errors b) Only give medicines where benefits outweigh risks c) Formulation tampering can be dangerous d) Seek advice from a pharmacist e) Thickeners and medicines – monitor for change in efficacy

References Kelly J, Wood J, Wright D. Medication administration errors in secondary care older person’s wards: A multi-centre observational study. Journal of Advanced Nursing: 67(12), 2615–2627. Kelly J, Wright D. Medicine administration errors and their severity in secondary care older persons’ ward: A multi-centre observational study. Journal of Clinical Nursing 2011 Kelly J, Wright D. An analysis of two incidents of medicine administration to a patient with dysphagia. Journal of Clinical Nursing. September 2010. Kelly J, Wright D. A qualitative study of dysphagic patients' experiences of taking medication. Journal of Advanced Nursing. 2009; 66(1), 82–91 Kelly J, Wright D. A qualitative study of the problems surrounding medicine administration to patients with dysphagia. Dysphagia 2009;24(1):49-56 Tomita T, et al. Effect of Food Thickener on the Inhibitory Effect of Mitiglinide Tablets on Post-prandial Elevation of Blood Glucose Levels. Dysphagia. 2017 Jun; 32(3): 449-503. doi: 10.1007/s00455-017-9787-1. Wright D. Swallowing difficulties protocol: Medication administration. Nursing Standard 2002;17(no.s 4-15):43-5. Wright D. Medication administration in nursing homes. Nursing standard 2002; 16(42): 33-8.

Thanks for listening Any questions?