Clinical Action of specific agents Flashcards
Parameters for Selection of a Local Anesthetic
- Length of time for which pain control is required
- Requirement for pain control following the treatment
- Need for hemostasis
Duration of Action depends on:
AT ITT
- Anatomical variation
- Type of injection: Infiltration or nerve block
- Individual variation
- Technique
- Tissue status: Vascularity, pH
Duration of action is divided into:
- Pulpal (hard tissue)
- Soft tissue (total)
Doses of local anesthetic drugs are presented in terms of _____ or _____.
mg/kg or mg/lb.
Maximum dose
Blood level just below the threshold for an overdose reaction.
Patients with potentially increased risk:
- Small child
- Elderly individual
- Medically compromise patient
Esters:
- Benzocaine
- Procaine
- Propoxicaine
Amides:
- Articaine (Septacaine)
- Bupivacaine (Marcaine)
- Etidocaine (Duranest)
- Lidocaine (Xylocaine)
- Mepivacaine (Polocaine)
- Prilocaine (Citanest)
Bisulfite allergy
- Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
- Drugs to Avoid: Vasoconstrictor containing L.A.
- Type of contraindication:Absolute
- Alternative drug:L.A. without vasoconstrictor
Atypical plasma cholinesterase
Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
Drugs to Avoid:Esters
- Type of contraindication: Relative
- Alternative drug:
Methemoglobinemia
- Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
Drugs to Avoid: Prilocaine
- Type of contraindication:Relative
- Alternative drug: Other amides
Significant liver dysfunction
- Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
Drugs to Avoid:Amides
- -Type of contraindication: Relative
- Alternative drug: Amides or esters but judiciously
Significant cardiovascular
- Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
Drugs to Avoid: High concentrations of vasoconstrictors
- -Type of contraindication: Relative
- Alternative drug: Low concentration of vasoconstrictors
Clinical hyperthyroidism
- Drugs to Avoid:
- Type of contraindication:
- Alternative drug:
-Drugs to Avoid: Vasoconstrictors
- -Type of contraindication: Relative
- Alternative drug: Low concentration of vasoconstrictors
Procaine provides _____ (duration) pulpal anesthesia and _____ (duration) soft tissue anesthesia
- no pulpal anesthesia
- 15-30 minutes soft tissue anesthesia
_______ produces the greatest vasodilatation
Procaine
NOTE: No longer available
Why is Procaine no longer available
High incidence of allergy
_______ (Ester) It is not available alone because of its high toxicity.
Propoxycaine
Ravocaine is a Combination of ________+ _______
Procaine + Propoxycaine
______ It was useful when amides were contraindicated and has been discontinued since 1996.
Ravocaine
Ester-type topical local anesthetic for temporary relief of pain associated with toothache, minor sore throat pain and canker sore.
Benzocaine
Lidocaine dental indication
Dental: Amide-type injectable local anesthetic and topical local anesthetic
Lidocaine medical indication
Medical: Local anesthetic and acute treatment of ventricular arrhythmias from myocardial infarction.
Allergies to amide local anesthetics is virtually nonexistent. T/F
T
Lidocaine
-Pregnancy classification:
Pregnancy classification: B
Is Lidocaine safe during lactation?
Yes
FDA recommends a maximum dosage of Lidocaine
7mg/kg or 3.2 mg/lb (max: 500mg)
Lidocaine 2%
-Duration of Pulpal Analgesia:
Pulpal: 5-10 min
Lidocaine 2%
-Duration of Soft tissue Analgesia:
Soft tissue 60-120 min
Lidocaine 2% with Epi. 1:50,000
-Duration of Pulpal Analgesia:
Pulpal: 60 min
Lidocaine 2% with Epi. 1:50,000
-Duration of Soft tissue Analgesia:
Soft tissue 3-5 hr
Lidocaine 2% with Epi. 1: 100,000
-Duration of Pulpal Analgesia:
Pulpal: 60 min
Lidocaine 2% with Epi. 1: 100,000
-Duration of Soft tissue Analgesia:
Soft tissue 3-5 hr
Mepivacaine dental indication
Dental:
- local infiltration anesthesia;
- injection near nerve trunks to produce nerve block.