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Questions and Answers
What is the definition of an adverse drug reaction (ADR) according to the WHO (1972)?
What is the primary source to check for details of medicines according to the text?
What is a potential issue with documenting Adverse Drug Reactions (ADRs)?
What is the name of the handbook recommended as the first source for checking medicine details?
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What is the name of the website recommended as a secondary source for checking medicine details?
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What is the CRICOS code mentioned in the text?
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Who is acknowledged in the text for their contribution?
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What is the year mentioned in the text as the definition of Adverse Drug Reaction (ADR) was stated?
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What percentage of patients in general practice in Australia experience adverse drug events?
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What is the main mechanism of anti-platelet medication?
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Which of the following medications is least likely to cause hyposalivation?
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What is the purpose of the Australian Commission on Safety and Quality in Health Care?
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Which of the following is NOT a direct factor Xa inhibitor?
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What is the typical route of administration for Heparin?
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What is the primary focus of the International Journal for Quality in Health Care?
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Which medication has the shortest half-life?
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Which of the following is not a type of medication that can cause hyposalivation?
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What is the reversal agent for Dabigatran?
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What is the name of the study published in the Medical Journal of Australia in 2006?
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Which of the following is a common side effect of the medications listed?
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What is the primary mechanism of action of Warfarin?
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What is the CRICOS code mentioned in the text?
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What is the main difference between anti-coagulant and anti-platelet medications?
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Which medication is metabolized primarily by the liver?
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What is the mechanism of warfarin in the body?
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What is the primary advantage of NOAC therapy over traditional anticoagulants?
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What is the reversal agent for dabigatran?
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What is the primary disadvantage of factor Xa inhibitors?
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In what year was warfarin first used as a rodenticide in the USA?
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What is the name of the foundation that synthesised warfarin in 1948?
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What is the mechanism of NOACs in the body?
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What is the half-life of NOACs?
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Which of the following foods is not typically associated with blood thinning effects?
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What is the primary purpose of documenting an Adverse Drug Reaction (ADR) from a dental point of view?
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Which of the following researchers is not associated with a new approach to classifying adverse drug reactions?
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What is a common factor that can contribute to an Adverse Drug Reaction (ADR)?
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Which of the following supplements is not typically associated with encouraging clotting?
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Why is it important to separate an Adverse Drug Reaction (ADR) from an allergy?
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What is the primary purpose of documenting the reaction description and severity in an Adverse Drug Reaction (ADR)?
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Which of the following is not a factor that can contribute to an individual's susceptibility to an Adverse Drug Reaction (ADR)?
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What is a critical consideration for dentists when dealing with patients who have neurological disorders or cognitive impairment?
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What is the primary concern when dealing with patients who have cognitive impairment?
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Which of the following is a key aspect of risk assessment in dental care?
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What is the primary goal of medical history and risk assessment in dentistry?
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Which of the following is a critical aspect of evaluating a patient's capacity to provide informed consent?
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What is a key consideration when evaluating the medical history of a patient?
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What is the primary purpose of evaluating a patient's capacity to understand and provide informed consent?
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Which of the following is a critical aspect of medical history and risk assessment in dentistry?
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What is the primary focus of the treatment planning phases?
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What is the significance of understanding medical history in dental treatment?
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What is the relationship between medical history and treatment planning?
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What is the outcome of integrating medical history into treatment planning?
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What is the primary purpose of treatment planning phases?
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What is the significance of the systemic phase in treatment planning?
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What is the relationship between the treatment planning phases?
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What is the outcome of a thorough medical history in treatment planning?
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What is the stage of the patient's Chronic Kidney Disease?
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What is the dosage of Insulin Aspart Protamine Suspension for the patient?
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What is the name of the medication taken by the patient for Prostamegaly?
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What is the current status of the patient's Multiple Myeloma?
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What is the dosage of Atorvastatin (Lipitor) taken by the patient?
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What is the reason for the patient's Gastric Oesophageal Reflux Disease (GORD)?
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What is the dosage of Vitamin D + Calcium (Ostevit-D) taken by the patient?
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What is the primary concern for dentistry related to the patient's Type 2 Diabetes Mellitus?
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What is the primary mechanism of action of Venlafaxine?
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What is the primary use of Spironolactone?
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What is the active ingredient in Lipex?
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What is the brand name of Lithicarb?
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What is the primary use of Atenolol?
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What is the primary mechanism of action of Atenolol?
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What is the primary use of Venlafaxine?
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What is the brand name of Spironolactone?
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What is the trade name of the bisphosphonate drug used for osteoporosis and other bone diseases?
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What is the purpose of dental clinicians screening patients prior to the use of anti-resorptive and anti-angiogenic medications?
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What is the percentage of decrease in incidence of MRONJ with patients undergoing preventive dentistry?
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What is the name of the journal that published the study on medication-related osteonecrosis of the jaw in patients with cancer?
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What is the purpose of discussing the risks of MRONJ with patients prior to drug therapies?
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Which of the following is a risk factor for MRONJ?
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What is the name of the organization that published a position paper on medication-related osteonecrosis of the jaw?
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How many patients were included in the study on reduction in MRONJ incidence for cancer patients with IV bisphosphonates?
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What is the primary goal of medical history and risk assessment in dentistry?
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What is the significance of understanding medical history in dental treatment?
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What is the primary focus of the treatment planning phases?
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What is the primary concern when dealing with patients who have cognitive impairment?
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What is a critical aspect of evaluating a patient's capacity to provide informed consent?
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What is a key consideration when evaluating the medical history of a patient?
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What is a critical aspect of risk assessment in dental care?
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What is the primary advantage of understanding medical history and performing risk assessments?
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What percentage of women may have some degree of thyroid deficiency?
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What is the name of the medication that is a selective type 1 beta blocker?
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In 2008, the National Institute for Health and Clinical Excellence (NICE) recommended the cessation of antibiotic prophylaxis for which group of patients?
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What is the name of the medication that is a calcium channel blocker?
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What is the name of the medication that is a statin?
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What is the name of the medication that is an ACE inhibitor?
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What is the term for the condition characterized by low energy, depression, fatigue, and elevated TSH?
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What is the name of the medication that is a thyroid supplement?
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What is the current status of the patient's Multiple Myeloma (MM) condition?
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What is the dosage of Insulin Aspart Protamine Suspension taken by the patient for Type 2 Diabetes Mellitus?
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What is the stage of the patient's Chronic Kidney Disease (CKD)?
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What is the dosage of Vitamin D + Calcium (Ostevit-D) taken by the patient for Osteoporosis?
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What is the impact of the patient's Multiple Myeloma (MM) on dentistry?
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What is the dosage of Metoprolol (Minax) taken by the patient for Hypertension?
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What is the impact of the patient's Gastric Oesophageal Reflux Disease (GORD) on dentistry?
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What is the dosage of Baclofen (Gablofen) taken by the patient for Prostamegaly?
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What is the name of the drug used to treat osteoporosis, osteogenesis imperfecta, and other bone diseases?
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What is the primary purpose of dental clinicians screening patients prior to the use of anti-resorptive and anti-angiogenic medications?
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What is the effect of preventive dentistry on the incidence of MRONJ?
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What type of reaction occurs within 1 day and involves Ab IgE?
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Which publication updated the position paper on Medication-Related Osteonecrosis of the Jaw in 2014?
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What is the primary use of Spironolactone?
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What is the name of the study that found a decline in the incidence of MRONJ in patients with cancer?
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What is the name of the journal that published the study by Ruggiero et al. in 2014?
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What is the name of the medication that contains simvastatin?
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What is the class of antidepressant that Venlafaxine belongs to?
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What is the purpose of discussing the risks of MRONJ with patients prior to drug therapy?
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What is the primary difference between Type I and Type IV reactions?
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What is the benefit of preventive dentistry in reducing the incidence of MRONJ?
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What is the brand name of the medication that is primarily used to treat angina and hypertension?
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What is the primary use of Lithicarb?
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What type of reaction occurs after 2-3 days and involves T cells?
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What is the primary focus of the treatment planning phases?
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What is the role of the dentist in cancer treatment?
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What is a primary goal of dental pre-assessment in patients undergoing cancer therapy?
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What is the significance of the TNM staging system?
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What is the purpose of 3D simulation in surgical planning?
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What is a long-term oral side effect of radiation therapy?
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What is the significance of neck dissection in cancer treatment?
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What is a dental complication that can arise from radiation therapy?
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What percentage of oral SCC is attributable to tobacco and alcohol?
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Why is it essential to remove teeth with poor prognosis before cancer therapy?
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What is the role of immunotherapy in cancer treatment?
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What is the primary goal of dental pre-assessment in cancer treatment?
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What is the significance of early detection in oral cancer screening?
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What is a short-term oral side effect of radiation therapy?
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What is a common side effect of chemotherapy?
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What is the primary focus of dental treatment planning for patients undergoing cancer therapy?
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What is the primary focus of the dentist's role in cancer treatment?
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What is the dentist's role in cancer treatment?
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What is the purpose of stabilising periodontal disease in patients undergoing cancer therapy?
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What is a potential complication of oncology treatment?
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Why is it essential to develop an appropriate preventive regime for patients undergoing cancer therapy?
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What is a goal of dental pre-assessment in cancer treatment?
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What is a side effect of chemotherapy?
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What is the significance of dental pre-assessment in cancer treatment?
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What is the primary goal of developing a preventive regime for a cancer patient?
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Why is it essential to consider the need for prophylactic extractions in a cancer patient's dental treatment plan?
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What is the benefit of using a baking soda mouthrinse in a cancer patient's preventive regime?
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Why is it important to advice a cancer patient on denture use as part of their dental treatment plan?
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What is the recommended frequency of toothbrushing in a cancer patient's preventive regime?
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What is the purpose of using a remineralising agent in a cancer patient's preventive regime?
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Why is a low sugar diet recommended as part of a cancer patient's preventive regime?
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What is the recommended daily water intake for a cancer patient to relieve dry mouth?
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What is the primary role of a dentist in supporting a patient undergoing cancer treatment?
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What is the main concern when performing extractions post-head and neck radiation therapy?
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What is the purpose of regular dental reviews for patients who have undergone radiation therapy?
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What is the classification system used to describe osteoradionecrosis of the mandible?
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What is the primary goal of supportive care during cancer treatment?
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What is the role of the multidisciplinary team (MDT) in cancer treatment?
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What is the main focus of post-treatment maintenance for patients who have undergone radiation therapy?
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What is the purpose of assessing the risk of osteoradionecrosis when performing extractions?
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Study Notes
Adverse Drug Reactions (ADRs)
- An ADR is a response to a drug that is noxious and unintended and occurs at doses normally used in humans for prophylaxis, diagnosis or therapy of disease, or for modification of physiological function (WHO 1972)
Medication History
- Check the Australian Medicines Handbook (www.amh.net.au) as the first source, then use the Australian Drug Information (Aus DI) site if needed
More Drugs – More ADRs
- The more drugs a patient takes, the higher the risk of ADRs
Medications with Hyposalivatory Effects
- Anti-hypertensives
- Narcotic analgesics
- Anti-spasmodics
- Anti-convulsants
- Systemic bronchodilators
- Anti-emetics
- Anti-nauseants
- Skeletal muscle relaxants
- Anti-Parkinsonian agents
- Anxiolytics
- Anti-depressants (TCA)
- Expectorants
- Decongestants
- Tranquillisers
- Sedatives
- Anti-neoplastic agents
Anti-Coagulant vs Anti-Platelet Medication
- Anti-platelet medication inhibits platelet aggregation through various methods
- Anti-coagulant medication affects coagulation factors to impede thrombosis/coagulation cascade after initial platelet aggregation
Common Anti-Coagulant Pharmacokinetics
- Warfarin (Coumadin/Marevan)
- Route: Oral
- Frequency: Daily
- T Max: 4 hours
- Half Life: 20-60 hours
- Metabolism and Elimination: Almost entirely hepatic
- Reversal: Vitamin K
- Dabigatran (Praxada)
- Route: Oral
- Frequency: Twice daily
- T Max: 2 hours
- Half Life: 12-17 hours
- Metabolism and Elimination: Renal (80%) and Hepatic (20%)
- Reversal: Idarucizumab
- Rivaroxaban (Xarelto)
- Route: Oral
- Frequency: Once daily
- T Max: 2.5-4 hours
- Half Life: 5-9 hours (healthy) and 11-13 hours (elderly)
- Metabolism and Elimination: Renal (35%) and Hepatic (65%)
- Reversal: Andexanet alpha
- Apixaban (Eliquis)
- Route: Oral
- Frequency: Twice daily
- T Max: 1-3 hours
- Half Life: 8-15 hours
- Metabolism and Elimination: Renal (27%) and Hepatic (73%)
- Reversal: Andexanet alpha
Warfarin
- Most widely used anticoagulant in the world
- Synthesised in 1948
- Used as a rodenticide in the USA in 1952
- Human use began in 1954
- Vitamin K Antagonist – Affects Factor II, VII, IX, and X
NOAC (or DOAC) Therapy
- AKA Non-Vitamin K antagonist Oral Anti-Coagulant Therapy
- AKA Novel Oral Anti-Coagulant Therapy
- AKA Direct Oral Anti-Coagulant
- Selective in Coagulation Factor Inhibition (Eg. Dabigatran inhibits Factor IIa/Thrombin)
- Higher compliance and lower side effect profile (?)
- No blood test needed/possible
Foods/Supplements with Blood Thinning Effects
- Licorice
- Nattokinase
- Lumbrokinase
- Niacin
- Beer
- Celery
- Cranberries
- Fish oil
- Garlic
- Ginger
- Ginkgo
- Ginseng
- Green tea
- Horse chestnut
- Onion
- Papaya
- Red clover
- Soybean
- St.John’s Wort
- Tumeric
- Wheatgrass
- Willow bark
Foods and Supplements that Encourage Clotting
- Avocado
- Co-enzyme Q10
- Dark leafy greens such as spinach
- Grapefruit
Documentation – Dental Point of View
- Offending medication
- Timing of onset
- Reaction description and severity
- Original indications
- Cofactors – e.g. other medications involved, fever?
Separate Adverse Drug Reaction to Allergy
- Susceptibility/Risk Factors: Aronson, J.K., & Ferner, R.E.(2003).
Medical History and Risk Assessment
- Importance of medical history in dental treatment planning
- Neurological disorders (e.g. dementia, acquired brain injury) may impact patient capacity to provide informed consent
- Dentist must ensure patient understands treatment, examination, or procedure
Risk Assessment Methods
- Systemic Phase
- Acute Phase
- Disease control Phase
- Definitive Phase
- Maintenance Phase
Antibiotic Prophylaxis
- Prevention of MRONJ (Medication-Related Osteonecrosis of the Jaw)
- Screening patients prior to anti-resorptive and anti-angiogenic medications
- Understanding risk factors for IV vs. oral bisphosphonates and medical reasons for taking bisphosphonates
- Up to 3-fold decrease in MRONJ incidence with preventive dentistry
- Risks of MRONJ can be discussed prior to drug therapies, emphasizing good oral hygiene
Medical Conditions
- Multiple Myeloma (MM): history, medications, and impact on dentistry
- Type 2 Diabetes: episodes of hypoglycaemia, medications, and impact on dentistry
- Chronic Kidney Disease: stage IIIA, medications, and impact on dentistry
- Hypertension: diagnosis, medications, and impact on dentistry
- Osteoporosis: vitamin D deficiency, medications, and impact on dentistry
- Gastric Oesophageal Reflux Disease (GORD): secondary effect to MM treatment
- Prostamegaly: secondary effect to MM treatment
Medications
- Venlafaxine (Effexor): antidepressant, selective serotonin-norepinephrine reuptake inhibitor
- Lithicarb (lithium carbonate): treatment and prophylaxis of mania, manic depressive illness, and recurrent endogenous depressive illness
- Spironolactone (Aldactone): treatment of fluid build-up due to heart failure, liver scarring, or kidney disease
- Atenolol (Tenormin): beta-blocker, treatment of angina and hypertension
- Lipex (simvastatin): treatment of hypercholesterolemia and hyperlipidaemia, prevention of coronary heart disease
- Alendronic acid (alendronate sodium, Fosamax): bisphosphonate, treatment of osteoporosis, osteogenesis imperfecta, and bone diseases
Treatment Planning Phases
- Systemic Phase
- Acute Phase
- Disease control Phase
- Definitive Phase
- Maintenance Phase
Importance of Medical History
- Understanding medical history helps tailor treatment towards the patient's needs and goals
- More information leads to less unpredictability
- Understanding medical history and performing risk assessments is crucial for a Dental Clinician
Medical History
- Multiple Myeloma (MM): diagnosed in 2017, currently in remission, previously treated with IV Zoledronic Acid, Prednisone, and Chemotherapy
- Type 2 Diabetes Mellitus (NIDDM): diagnosed in 2019, with episodes of hypoglycaemia, treated with Insulin Aspart Protamine Suspension and Gliclazide
- Chronic Kidney Disease: Stage IIIA, secondary to MM treatment, eGFR – 51 ml/min, treated with Dutasteride – Tamsulosin (Duodart) and Ceased oxybutynin
- Hypertension: diagnosed prior to 2000, treated with Perindopril (Coversyl), Metoprolol (Minax), Lercanidipine (Lercadip), and Atorvastatin (Lipitor)
- Osteoporosis: diagnosed with Vitamin D deficiency, treated with Vitamin D + Calcium (Ostevit-D)
- Gastric Oesophageal Reflux Disease (GORD): secondary effect to MM treatment, previously treated with pantoprazole and sodium bicarbonate capsules
- Prostamegaly: secondary effect to MM treatment, treated with Baclofen (Gablofen)
- Hypothyroidism: with low energy, depression, and fatigue, treated with thyroid supplements
Antibiotic Prophylaxis
- National Institute for Health and Clinical Excellence (NICE) guidelines (2008): cessation of antibiotic prophylaxis for patients at risk of infective endocarditis (IE) for any invasive dental procedure
- Risks of adverse events versus risk of IE
Therapeutic Guidelines
- 2008: Australian Therapeutic Guidelines
- 2019: Therapeutic Guidelines – Dental Procedures Indicated
Lifestyle Choices and Risk Factors
- Cardiovascular Disease: antibiotic prophylaxis may be required in certain cases
Medication-Related Osteonecrosis of the Jaw (MRONJ)
- Prevention: dental clinicians should screen patients prior to the use of anti-resorptive and anti-angiogenic medications
- Risks of MRONJ can be discussed prior to drug therapies, ensuring patients understand the reason for good oral hygiene
- Up to 3-fold decrease in incidence of MRONJ with patients undergoing preventive dentistry
- Reduction in MRONJ incidence for cancer patients with IV bisphosphonates
Oral Side Effects of Radiation Therapy (RT)
- Short-term effects: mouth ulcers (mucositis), hyposalivation/xerostomia, loss of taste (dysgeusia)
- Long-term effects: hyposalivation/xerostomia, radiation caries, osteoradionecrosis, periodontitis, trismus
Dental Pre-Assessment Goals
- Prepare patient for short-term and long-term side effects of cancer therapy
- Minimise interruption of cancer treatment from acute dental concerns
- Prevent future complications (e.g. osteoradionecrosis)
- Develop an appropriate preventive regime to counter increased challenge to oral structures from oncology treatment
Dental Treatment Plan
- Minimise interruption of cancer treatment
- Prevent future complications
- Develop an appropriate preventive regime
- Remove existing foci of infection
- Stabilise periodontal disease
- Develop a preventive regime (e.g. twice daily toothbrushing, high fluoride toothpaste, baking soda mouthrinse)
Risk Factors for Oral Cancer
- Lifestyle risk factors: smoking, alcohol
- Immunosuppression: immunosuppressant use in autoimmune disease, HSCT/organ transplant
The Dentist's Role
- Early detection
- Support through treatment
- Post-treatment maintenance
- Prevention and early detection
- MDT diagnosis and treatment planning
- Rehabilitation and restoration
Support during Treatment
- Oral mucositis pain management
- Oral hygiene advice
- Dry mouth advice
- Assess for oral viral, bacterial, fungal infections
- Communicate with medical team
- Avoid elective dental treatment
Regular Dental Reviews
- Consider permanent aftermath of radiation therapy
- Monitor for cancer recurrence
- Continue management of caries and dry mouth
- Preventive oral care regime
- Dry mouth advice
- Nip dental disease in the bud
- Appropriate choice of restorative material in high caries risk patients
Extractions Post-H&N RT
- Assess risk of osteoradionecrosis (ORN)
- Request radiation field map
- Consider risk factors that impair healing
- Refer to oral surgeon or specialist in SND if necessary
Osteoradionecrosis (ORN) Management
- Review extraction sockets
- Refer if suspect ORN
- Notani's classification of mandibular ORN: Grade I, II, III
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Description
This quiz covers medication safety and adverse drug events in healthcare, including a literature review of medication safety in Australia and a study on adverse drug events in general practice patients.