Practical Prescribing Guide

Practical Prescribing Guide

1. Practical Prescribing guide in ED at SCGH Danny Soo

2. Outline Common prescribing scenarios Taking a best possible medication history Discharging a patient during and after hours – Webster pack, residential care facility patients PBS – authority vs streamlined authority SAS medications – aspirin suppositories and physostigmine Online Resources Medication guidelines on HealthPoint Community Program for Opioid Pharmacotherapy (CPOP) patients HIV Post Exposure Prophylaxis (PEP) Rabies vaccine Clinical Alert System New WA Hospital medication chart and anticoagulation chart to come

3. SCGH Pharmacy Department 2018 3 What is wrong with this? Common prescribing scenarios

4. Spot the errors

5. Use of Error Prone Abbreviations Abbreviations that are commonly used but are unacceptable include: mcg , μg (use microg , micrograms) OD , od or d (use daily, once daily, mane or nocte) s/l or sl (use subling for sublingual) s/c or sc (use subcut for subcutaneous injection) Inh (use inhale for inhalation) Q4h, ̊ representing frequency (use every 4 hours, 4 hrly , 4 hourly) O (use PO for oral)

6. Use of unacceptable abbreviations Trade names should be avoided eg . Tazocin ® should be prescribed as Piperacillin/ Tazobactam – the brand name does not clearly indicate the drug is a penicillin based antibiotic which has resulted in clinical incidents Exceptions Insulin – Brand Name Only Biosimilars – Generic and Brand Name i.e. Warfarin, Infliximab SCGH Pharmacy Department 2018 6

7. Spot the Errors

8. Unclear Orders Entonox® Normal saline 150mg 100mg Should be nocte

9. Unclear Orders

10. How to Cease a Medication Order

11. PRN Problems Use hourly frequency instead of how often e.g. 8 hoursly vs tds Max doses for opioids per 24 hours as this acts as a prompt for pain review if using more than prescribed. Also reduces unnecessary side effects to opioids

12. How to take a best possible medication history Who manages their medication? Patient or Carer/family member? Check with patient/carer if they’ve brought in their medications. Which pharmacy they usually get their medications from? If they go to multiple pharmacies, check which pharmacy they mostly frequent. Have the Community pharmacy fax at least a 6 month medication dispensing history Webster pack patients and Nursing home patients, request medication profile and dispensing history for non-packed medications (such as insulin, warfarin, denosumab 6 monthly, patches, implants, sprays, etc ) Confirm meds and dosing with patient/carer as this may vary from dispensing label OR patient may no longer be taking certain meds Enquire abt any changes to patient’s meds over last 4 weeks prior to admission e.g. meds ceased, antibiotics had, prednisolone and other short term therapies Ask abt sprays, vitamins, puffers, cream, pain tabs OTC, patches. Use MMP checklist Use back of the MMP as a guide as to reliable sources of medications. Who else can I contact?

13. Common Pitfalls in Medication History Taking SCGH Pharmacy Department 2018 13 Not asking the patient –how they take their medications, assessing their compliance, which pharmacy they go to What’s on the label isn’t always how the patient is taking their medication What’s brought in isn’t always what the patient is currently on. Check dispensing date on item Not questioning the patient on allergies or updating new allergies Referring to an old discharge summary (3 months maximum) Referring to a GP letter without checking details Using only one source Transcribing incorrectly Webster pack patients – not asking about non-packed medications such as inhalers, insulin, warfarin

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15. Discharging patient during/ after hours from ed Check prescription written by yourself to ensure that it meets State legislation and PBS compliant. E.g. S8 written separately to other items. S8 prescriptions need to be handwritten including the name and address of the patient Ensure quantities on script matches PBS quantity or lesser. Patients who do not have Medicare/from overseas without reciprocal agreement are ineligible to get prescription at SCGH as we are a PBS hospital Aboriginal patients are unable to have their script CTGed from hospital prescription. Can give script and GP has to rewrite and add CTG so patient does not have to pay co-payment On call pharmacist does not attend for discharge prescription Patients with Webster packs should have their prescriptions and changes on discharge summary faxed to their community pharmacy to ensure amendments are enacted in a timely manner. Same goes for patients from Residential Care facilities (or Nursing homes).

16. PBS prescribing guide Authority required versus authority streamlined Item code number is not equivalent to the authority number You may only prescribe the max allowed PBS quantity or lesser For e.g. if you require Augmentin Duo Forte for 10 days then you will have to prescribe a quantity of 10 tablets with 1 repeat. Not a quantity of 20. You may annotate “Regulation 24” on a prescription with repeats to enable the entire supply of the script to be dispensed at the same time for the patient. Using example above, patient can have quantity of 20 tabs on discharge with Reg 24 annotation This is not to be done for every prescription with repeats. The hospital is only able to supply maximum 1 month supply or the standard PBS pack

17. In this instance, you will have to ring PBS for authority unlike example before where a streamlined authority code is provided However, authority for the prescription will only be granted for the approved indication stated on the PBS Authority code usually begins with Z……. This needs to be written on the prescription

18. SAS medications in ED such as aspirin suppositories and physostigmine must always be accompanied by a completed form that is returned to pharmacy, signed by Dr to enable resupply of stock from manufacturer OR your next patient will not be able to treated

19. Online resources available Useful resources include : Pharmacy page on Healthpoint – Medication guidelines PBS eTG Formulary One – prescribing restrictions and indication at SCGH Drug Formulary System – useful for finding if medication is stocked at SCGH after hours and where Australian Injectable Drug Handbook Don’t Rush to Crush online via Mims Australian Medicines Handbook UptoDate Micromedex Toxnet LactMed

20. Community Program for Opioid Pharmacotherapy (CPOP) Patients who are on Community Program for Opiod Pharmacotherapy (CPOP) like methadone liquid, buprenorphine/naloxone ( Suboxone ® ) films require their current dose VERIFIED either by the Clinical Pharmacist or Drug and Alcohol nurse I t is never a medical emergency to dose the patient e.g. after hours N EVER prescribe a dose without having it verified as patient may be on variable dosing or no longer on program or prescription for CPOP may have expired.

21. Rabies exposure

22. Clinical alert system A clinical alert is a diagnosis which has the potential to be of critical importance to a patient’s management during the first 24 hours of their admission to hospital and assumes that the patient is not always capable of communicating such information. There are three classifications of clinical alerts: Anaesthetic, Medical and Drug alerts Anaphylaxis, angioedema type presentations that we see in ED constitutes a Clinical alert that should be notified For more categories or information see the back of the Clinical Alert form How to submit a notification for a Clinical Alert?

23. Clinical Alert Forms MR508 and MR509

24. Take 5 Clinical Alert slides

25. New WA Med Chart and anticoagulation chart to be released soon. WA Hospital Med Chart WA Anticoagulation Chart