Biomedical subjects
Publications and source records attributed to G E Tanner.
We observed a case of skin avulsion associated with measurement of blood pressure by oscillometry on an anesthetized patient in the prone position. Epidermal shearing may be avoided in the prone patient by either wrapping the antecubital skin underlying the blood pressure cuff with gauze or preventing weight-bearing by the cuffed portion of the arm.
Simulations based on physiologic modeling have been used for over twenty years to clarify the pharmacokinetics of inhaled anesthetics. We describe ANSIM, an anesthesia simulator for the IBM PC. ANSIM uses established modeling techniques to create a life-like anesthesia simulator. ANSIM is useful as an educational tool for demonstrating classic concepts of uptake and distribution of inhaled anesthetics.
We describe a seven-compartment physiologic model of inhalational anesthetic induction with circulatory shunts that was used to simulate inhalational anesthetic induction in children with congenital heart disease. Our conclusions based on this model are that left-to-right (L-R) shunting has little effect on speed of induction; right-to-left (R-L) shunting significantly slows induction of N2O and halothane anesthesia; and adding an L-R shunt to a preexisting R-L shunt will attenuate the slowing of induction caused by the R-L shunt.
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