Monday, 9 March 2015

What Medication Error means for the Nigerian Optometrist

Introduction
Medication errors are errors in prescribing, dispensing and administering pharmaceutical agents 1. There has been widespread reports of medication errors and the harm it poses to body tissues 2. These errors could arise from the clinician, the dispenser or the drug user.

The Nigerian Situation
I have experienced, heard and witnessed dispensing faults. One recent case was on prescribing artificial tears, the patient presented a topical antifungal drug (Fluconazole gutta) purchased from a local chemist. 
Relevant research papers have shown that the Nigerian health care system has had a share in the battle of medication errors 3, 4, 5. This has been attributed on the part of health care workers in Nigeria to not enough age consideration in dosing, omission of dosage duration in prescribing, wrong dosage duration, over dosing, under dosing and seemingly unsatisfactory labelling of drugs by manufacturers

Where does the Nigerian Optometrist come in?
The training curriculum for optometrists in Nigeria allows for competency up to level four of the Global Competency Model for Optometry (Ocular Therapeutics). This puts the optometrists in the battle against medication errors as they strive to provide quality eye care services to the populace. Even though it is accepted by the ophthalmic world that ophthalmic topical drugs have little adverse effects compared to systemically administered drugs, this does not exclude the optometrist from this battle in any way. Leaving aside the fact that optometrists also prescribe systemic drugs in Nigeria, misuse of some topical ophthalmic preparations can cause adverse effects on the ocular tissues and adnexa. We of course shouldn't forget documentations of topical steroid induced glaucoma and cataract or fungal infections of the conjunctiva and cornea due to abuse of topical antibiotics.

How do we optometrists tackle this?
These errors comes from three main sources, the prescribing optometrist, the dispenser and the patient. 
On the part of the optometrist, he/she must be conversant with the pharmacokinetics and pharmacodynamics of the drug to be prescribed taking into special consideration children, nursing mothers and the aged. To reduce the errors made by the optometrist, one can employ the use of online tools like drugs.com and cataloguing drug dosage information in readily available hard copy prescription charts in clinics. 
Medication errors from the dispenser can be prevented by having a pharmacy with monitored dugs in the same optometry clinic facility that prescriptions are made, by a feedback system allows for the patient to present the drug purchased outside the clinical facility to the prescribing optometrist before administration. 
Medication errors in administration can be tackled by proper education of the patient by the optometrist on the use the use of the drug with the incorporation of the dos and donts method. 
I should also add that the optometry schools must take pharmacology courses much more seriously with an approach that enables students not only know the pharmacological details of ophthalmic drugs but also to be conversant with the ophthalmic drugs in the Nigerian market. In our Continuing Education Programmes, the newer ODs who seem more prone to such errors should be specially educated.
It is believed that through considering and implementing  these recommendations, we can serve the vision of the populace better and create a better name for the profession in Nigeria. You can add more recommendations in the comments section.

References 
1. Medical Dictionary 2015, Medication Errors, viewed 9 March 2015.
2. Velo GP,  Minuz P 2009, Medication Errors: prescribing faults and prescription errors, British Journal of Clinical Pharmacology, vol 67, no 6, pp 624-628, viewed 9 March 2015. 
3. Oshikoya KA, Ojo OI  2007, Medication errors in paediatric outpatient prescriptions of a teaching hospital in Nigeria, Nig Q J Hosp Med, vol 17, no 2, pp. 74-78, viewed 9 March 2015. 
4. Nwasor EO, Sule ST, Mshelia DB 2014, Audit of medication errors by anesthetists in North Western Nigeria,  Niger J Clin Pract, vol 17, no 2, pp 226-31, doi:10.4103/1119-3077.127563.
5. Oyedunni S. Arulogun*, Simon K. Oluwole and Musibau A. Titiloye 2011, Prescription Errors Prevalent in Four Units of a University Teaching Hospital in Nigeria, Journal of Public Health and Epidemiology, vol 3, no 11, pp 513-519. viewed 9 March 2015. 

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