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Pain control:
- Important issue in dentistry
- often reason patient comes to office
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Two components of pain are?
- perception: physical component
- reaction: psychological reaction
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_____is usually identified when the body is trying to fight infection.
pain
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what happens in pain?
blood rushes to infected area, body temperature increases, inflammation and blood clotting occurs.
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The cells responsible for letting the body know there's pain are called?
prostaglandins
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One way to control pain is to inhibit ________.
prostaglandin synthesis
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Analgesic agents are used to?
control pain
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two main groups of analgesics?
- Nonopiod: non-narcotic used to treat mild pain and are weaker medications.
- Opioid: narcotic used to treat severe pain and are strong analgesics.
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What is an important difference between nonopioid and opioid analgesics?
- site of action.
- Nonopioid act primarily at peripheral nerve endings and Inuit prostaglandin production.
- Opioids act primarily in the central nervous system and depress the CNS response to pain.
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Nonopioids Vs Opioids analgesics
- Nonopioids: over the counter, Non-narcotic, analgesic- reduce pain, antipyretic reduces fever, inflammation-reduces inflammation.
- Opioids: need prescription, narcotics, used for severe pain.
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More common NSAIDs used in dentistry are?
- ■Aspirin (acetylsalicylic acid)
- ■Tylenol (acetaminophen )
- ■Advil, Motrin (ibuprofen)
- ■Naprosyn (naproxen)
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Nonsteroidal antiinflammatory drugs (NSAIDs):
- Nonopioid (Nonnarcotic) Analgesics
- treat pain
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Advantages of Aspirin (acetylsalicylic acid)? what group of analgesic?
- ■Advantages:
- ■Reduces inflammation
- ■Lowers body temperature – fights fever
- ■Relieves moderate pain
- ■Prevents blood clotting
- ■Small doses reduce uric acid retention – goutCan potentate effects of certain drugs
- Nonopioid
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Disadvantages of Aspirin (acetylsalicylic acid)?
- ■Disadvantages:
- ■GI problems in large dosages – bleeding, nausea, vomiting
- ■Prolonged bleeding – exacerbate ulcers
- ■Causes Reye’s syndrome in children – hepatotoxicity and death
- ■Pregnancy – no human studies, but animal studies show birth defects
- ■Drug interaction with Warfarin – blood thinner
- ■Can potentate drug effects like with Methotrexate – used to treat cancer. Combo results in bone marrow depression
- ■Interferes with diuretics
- ■Not recommended for asthmatics – breathing issues
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Aspirin + insulin =
increased insulin production. Consult with MD before rx to diabetics
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Aspirin + antacids =
decreased aspirin effects
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Aspirin + NSAIDs =
increased GI bleeding
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Herbs + Aspirin which increase bleeding are:
White willow, dong quai, chamomile, ginseng, ginger, and red clover
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advantages of Tylenol (acetaminophen)?
- –Good antipyretic agent (fever reducing)
- –Good analgesic effect
- –Good to use when aspirin is contraindicated in adults and children
- –No GI issues like gastric bleeding
- –Does not affect platelet adhesion
- –Does not affect uric acid No drug interactions
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Disadvantages for Tylenol (acetaminophen)?
- No anti-inflammatory action – not considered an NSAID
- Poor antiplatelet
- Is metabolized in liver so can produce hepatotoxicity in certain patients
- If a heavy drinker dose needs to be restricted to 2gm/day
- Drug of choice for folks on Warfarin and peptic ulcer disease
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Advantages of Advil, Motrin (ibuprofen)?
- ■Good analgesic, antipyretic and antinflammatory
- ■400mg more affective than aspirin
- ■Drug of choice for dental pain
- ■When combined with Tylenol is as affective as Tylenol with Codeine
- ■ Excreted by kidneys
- ■Higher doses are better than Codeine
- ■Metabolized by liver and excreted by kidneys
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Disadvantages Advil, Motrin (ibuprofen)?
- ■Decrease effectiveness of ACE inhibitors, Aspirin, Beta Blockers, Corticosteroids', Cyclosporine, Lithium and loop diuretics
- ■May increase levels of anticoagulants
- ■Not recommended for women who are breast feeding
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Advantages of Naprosyn (naproxen)?
- ■Good for mild to moderate pain
- ■Good antipyretic agent
- ■Decreases prostaglandin production
- ■Good antiplatelet agent
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Disadvantages of Naprosyn (naproxen)?
- ■Decrease ACE inhibitors – resulting in MI and stroke
- ■Increased GI issues
- ■Increased levels of Lithium, Bisphosphonates, antibiotics and other NSAID
- ■Hepatic issues
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When are Opioid analgesics used?
- ■Used when NSAIDs are contraindicated
- ■Used for moderate to severe pain
- ■Bind to receptors in spinal cord and CNS and alter pain perception
- ■Sedation and euphoria
- ■Cough suppression
- ■Control of GI problems such as diarrhea
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Common Opioids are?
- ■DepoDur (morphine)
- ■Codeine Sulfate (codeine)
- ■ Combunox, Percocet (oxycodone)
- ■Methadone Hydrochloride (methadone)
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Advantages of DepoDur (morphine)?
- *Opioids
- ■Great for severe pain
- ■Drug of choice for severe pain of myocardial infarction
- ■Drug of choice for people with severe pain and terminal diseases
- ■Reduces pain perception – best in IV, also comes in pill and liquid form
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Disadvantages DepoDur (morphine)?
- *Opioids
- ■Respiratory depression
- ■High potential for addiction
- ■Enhances actions of other CNS depressants
- ■Can cause hypotension
- ■Physical and psychological dependence
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Advantages Codeine Sulfate (codeine)?
- *Opioids
- ■Most commonly
used ovoid in dentistry – Tylenol with codeine - ■Codeine alone is a Schedule II drug but when used in combination is a Schedule III drug
- ■Antitussive – prevents coughing
- ■Good for minor pain
- ■Rapid absorption
- ■Low risk for abuse
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Disadvantages Codeine Sulfate (codeine) :
- *Opioids
- Overdose results in pinpoint pupils
- Overdose results in respiratory distress and death
- Not recommended for pregnant women
- Not recommended if patient allergic to Opioids
- Side effect of medication is vomiting
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Advantages Combunox, Percocet (oxycodone)?
- *Opioids
- Treating moderate to severe pain
- Good analgesic
- Reduces pain perception
- Can be combined with NSAIDs
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Disadvantages Combunox, Percocet (oxycodone)?
- *Opioids
- Not to be prescribed PRN
- May cause CNS depression
- Problems with abuse
- GI upset- abdominal pain
- Respiratory issues
- Xerostomia
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Methadone Hydrochloride (methadone):
- *Opioids
- ■Treatment for Narcotic withdrawal and dependence
- ■Effective in cases of Heroin, morphine, and other opioids but not METH
- ■Given for inpatient treatment or during emergency situations – Dr. Drew
- ■Alters pain perception
- ■Not prescribed by DDS
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Disadvantages Methadone Hydrochloride (methadone)?
- *Opioids
- Cardiovascular issues – arrhythmias, cardiac arrest, fainting
- GI upset
- CNS issues – agitation, hallucination
- Can cause sudden death
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Narcan (naloxone)
- *opioids
- Opioid antagonist
- Used to treat Opioid overdose
- Should be in medical emergency kit
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NSAIDs should be avoided by people with?
asthma, cardiovascular or renal diseases –drug interaction
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GI issues are associated with?
NSAIDs and Opioids
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NSAIDs and Opioids are often used in _____.
combination
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