Pharmacovigillance Methods – PST06211 Monitoring and Evaluation of Medicine Use
NTA Level 6 • Semester 2 • PST06211 Pharmacovigillance Methods Monitoring and Evaluation of Medicine Use • Source Session/Topic 9 Full source-text version: all educational wording from the extracted learning source is retained; only presenter/tutor metadata and web-layout noise are removed, while formatting is improved for readability. Session 9: Pharmacovigillance Methods Total Session Time: 120 minutes Prerequisites • None Learning Tasks By the end of this session students are expected to be able to: • Define pharmacovigillance methods • List pharmacovigillance methods • Explain each pharmacovigillance methods • Compare reporting methods in pharmacovigillance Resources Needed: • Flip charts, marker pens, and masking tape • Black/white board and chalk/whiteboard markers • Computer and LCD projector • Handout 9.1 pharmacovigillance methods SESSION OVERVIEW Activity/ Step Time Content Method 1 05 minutes Presentation Introduction, Learning Tasks 2 05 minutes Presentation Definition of PharmacovigilanceMethods 45 minutes Presentation 3 Small group Pharmacovigillance Methods discussion 4 20 minutes Presentation Explanations on Pharmacovigillance Methods 25 minutes Presentation Comparing the Reporting Methods of 5 Buzzing Pharmacovigillance 6 10 minutes Presentation Key Points 7 10 minutes Presentation Evaluation PST 06211 Monitoring and Evaluation of Medicines Use NTA Level 6 Semester 2 Facilitator Guide 69 SESSION CONTENTS STEP 1: Presentation of Session Title and Learning Tasks (5 minutes) READ or ASK students to read the learning tasks and clarify ASK students if they have any questions before continuing. STEP 2: Definition of Pharmacovigillance Methods (5 minutes) • Pharmacovigillance methods are those methods used in pharmacovigillance in conducting surveillance of adverse events or any other drug related problem. It can be either active surveillance or passive surveillance • It‘s a way to monitor drug safety. • Are methods for gathering information STEP 3: Pharmacovigillance Methods (45 minutes) Activity: Small Group Discussion (20 minutes) DIVIDE students into small manageable groups ASK students to discuss on the following questions • What are the pharmacovigillance methods? ALLOW students to discuss for 15 minutes ALLOW few groups to present and the rest to add points not mentioned CLARIFY and SUMMARIZE by using the contents below • The following are pharmacovigillance methods used in monitoring drug safety; o Spontaneous reporting o Intensified ADR reporting o Targeted reporting o Cohort Event Monitoring o Electronic health record(EHR) mining PST 06211 Monitoring and Evaluation of Medicines Use NTA Level 6 Semester 2 Facilitator Guide 70 • Also pharmacovigillance methods can be categorized into; o Passive surveillance methods include; Spontaneous reports, Case series, Stimulated reporting o Active surveillance methods include; Sentinel sites, Medicine event monitoring, Cross- sectional study (survey) ,Case-control study Refer students to Handout9.1: pharmacovigillance methods STEP 4:Explanations on PharmacovigillanceMethods(20 minutes) • Spontaneous reporting o A system to monitor the safety of all medicines on the market o Voluntary submission of ICSRs by health professionals, pharmaceutical manufacturers and patients to the nationalpharmacovigillance centre o Requires two initial steps: A reporter Suspects that an undesirable medical event may have been caused by exposure to a medicine o Reports the suspicion to the national pharmacovigillance centre o Reports may include; Serious ADRs Severe ADRs New drug Unknown (unlabelled reactions) ADRs in vulnerable groups (children, pregnant women, elderly o Advantages of this method Most commonly used method Easiest method to establish least labour intensive relatively inexpensive o Disadvantages of this method Inherent under‐reporting Captures only suspected ADRs Possibility ofReporting bias • Intensified ADRs reporting o To enhance ADR reporting of specific medicines in early post‐marketing phase o Extension of Spontaneous Reporting Programme o Medicines under additional monitoring include, medicines contain new active substance, biologicalmedicines that require additional studies e.g. more data on long term use or on rare side effects in clinical trials PST 06211 Monitoring and Evaluation of Medicines Use NTA Level 6 Semester 2 Facilitator Guide 71 • Targeted reporting o intensified ADR Reporting within a defined cohort o it target specific medicines, population, ADR, and clinics • Cohort event monitoring o To gather more information on the safety profile of a new chemical entity in early post‐ marketing phase o Observational cohort study design o Patients enrolled into cohort and actively followed‐up during treatment to record all adverse events (not just suspected ADRs)Characterise known reactions o Detect signals of unrecognised reactions o Identify interactions with other medicines o Detect inefficacy of medicine o Assess safety in pregnancy and lactation • Electronic health record(EHR) mining o Make use of existing health records to supplement pharmacovigillance activities o Potentially rich source of ADR data o Mining of the THIN data base is currently being evaluated • Which method and when?Routine pharmacovigillance (spontaneous reporting) is recommended for all products focused pharmacovigillance is better out under specified conditions when safety issues or potential safety issues need to be addressed .Active studies are undertaken when data is needed quickly STEP 5: Comparing the Reporting Methods (25 minutes) Activity: Buzzing (10minutes) ASK students to pair up and buzz on the following question • Which methods report all types of ARDs? ALLOW few pairs to respond and let other pairs to add on points not mentioned WRITE their response on the flip chart/board CLARIFY and SUMMARIZE by using the content below PST 06211 Monitoring and Evaluation of Medicines Use NTA Level 6 Semester 2 Facilitator Guide 72 METHOD MEDICINES POPULATION REPORTS Spontaneous Reporting All medicines life, All exposure All ADRs cycle of products individuals but denominator unknown Intensified ADR Reporting Specific medicines All exposure All ADRs individuals but denominator unknown Targeted Reporting Specific medicines Defined cohort Specific ADRS All ADRs Cohort Event Monitoring Specific medicines Defined cohort All events Electronic health record All medicines Defined cohort All events mining STEP 6: Key Points (10 minutes) • Pharmacovigillance methods are ways to monitor drug safety. • Pharmacovigillance method spectrum include;Spontaneous Reporting, Intensified ADR Reporting, Targeted Reporting and Cohort Event Monitoring • Pharmacovigillance methods can be categorized into passive and active surveillance • Spontaneous reporting involves a system to monitor all medicines • Intensified ADR reporting involves reporting of specific medicines at early