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20 Cards in this Set
- Front
- Back
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max time able to use bier block
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less than 2 hours
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what is the proximal cuff inflated to
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150 mm Hg more than systolic
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what confirms adequate tourniquet pressure
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loss of radial pulse
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what is the dose of local anesthetic based on
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weight
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what is the formula to calculate local anesthetic dose
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3mg/kg
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what local anesthetic is used
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0.5% prilocaine or lidocaine without epi
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what is the onset of action for the lidocaine or prilocaine
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ususally 5 minutes
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the tourniquet may be safely released after how long
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25 minutes
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while releasing the tourniquet, we should be watching for
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local anesthetic toxicity for several minutes
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what can decrease the risk of toxicity
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slow injection of anesthetics
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what is avoided due to death and local anesthetic toxicity
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bupivicaine
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how should we deflate the tourniquet
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cyclic deflation at 10 second intervals
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name some complilcations for bier blocks
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toxic reactions, phlebitis, compartment syndrome, and loss of a limb
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contraindications of bier blocks
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sickle cell disease, infection, or ischemic vascular disease. traumatic lacerations. pain limits effectiveness of exsanguination
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a blothcy appearance after local anesthetic injection, tells us what
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the extremity is not adequately exsanguinated------quality of block will be poor
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the duration of surgical anesthesia depends on
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the time that the tourniquet is inflated
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preseratives have been avoided due to
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poss association with thromboplebitis
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biers are not performed when
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postop pain is a significant issue
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which anesthetic is advantageous and why
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prilocaine--rapid metabolism decreases the likelihood of system toxicity
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absolute must to do a bier block is...
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intact venous system
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