Anesthesia

43 Questions | Total Attempts: 1057

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Anesthesia

Review of basic Gas laws for anesthesia.   These questions come from our notes and books.


Questions and Answers
  • 1. 
    T     When in the middle of a case your CO2 absorbent turns purple. What would you do?
    • A. 

      Change the canister, to get rid of exhausted CO2 absorber

    • B. 

      Kiss their forehead and wish them the best of luck

    • C. 

      Increase Fresh Gas Flow, to compensate for exhausted CO2 absorbent

    • D. 

      Increase their Respiratory rate to blow off excess CO2

  • 2. 
        You are going to do a peripheral nerve block on a patient and are using Ultrasound to assist you. What would you want to use on your Ultrasound?
    • A. 

      Low Frequency to produce a high resolution

    • B. 

      High frequency to produce a high resolution

    • C. 

      Low frequency to penetrate deep into tissue

    • D. 

      High frequency to penetrate deep into tissue

  • 3. 
          Which of these is NOT a distinguishing property of gases?
    • A. 

      Strong intermolecular forces

    • B. 

      High Velocity

    • C. 

      Expand & compress easily

    • D. 

      High degree of random Motion

  • 4. 
         During your pre-op assessment you find your pt has pulmonary edema. How will this affect Diffusion of your gases?
    • A. 

      Increase Distance across membrane, and Increase diffusion

    • B. 

      Increase Distance across membrane and decrease diffusion

    • C. 

      Decrease distance across membrane and increase diffusion.

    • D. 

      Decrease distance across membrane and decrease diffusion.

  • 5. 
          What is a good example of Grahams Law in Anesthesia practice?
    • A. 

      The Venturi Mask effect where increasing velocity of flow decreases pressure exerted on walls of tube.

    • B. 

      Being aware of how air flows through larger (turbulent) and smaller (laminar) airways within lungs.

    • C. 

      Determining the partial pressure of O2 in a cylinder of air.

    • D. 

      Realizing that CO2 diffuses 20x faster than O2 due to increased solubility of CO2.

  • 6. 
        When choosing an IV gauge, you want to choose a larger bore IV in order to increase the radius of the tube and thereby increase flow. This is an example of which law?
    • A. 

      Poiseuille’s Law

    • B. 

      Dalton’s Law

    • C. 

      Bernoulli’s Law

    • D. 

      Charles Law

  • 7. 
    Give an Example of a colloid.
    • A. 

      0.9 NS

    • B. 

      Cough Syrup

    • C. 

      Hespan

    • D. 

      Lactated ringers

  • 8. 
    At 20 C the pressure inside your cylinder is 800 psi. If you increase your temp to 30 C what will your pressure be?
    • A. 

      400 psi

    • B. 

      1600 psi

    • C. 

      530 psi

    • D. 

      1200 psi

  • 9. 
    How much air space should there be in a CO2 absorber?
    • A. 

      Equal to Tidal Volume

    • B. 

      2-3 times the Tidal Volume

    • C. 

      2 L/min

    • D. 

      Minimal air space should be allowed.

  • 10. 
    At sea level, the volume of a gas is 800ml. If you decrease the atmospheric pressure to 608 mm Hg what will the volume of gas be now?
    • A. 

      1200 ml

    • B. 

      1600 ml

    • C. 

      1000 ml

    • D. 

      640 ml

  • 11. 
    Which statement best defines diffusion?
    • A. 

      When the numbers of molecules entering and exiting the liquid phase become equal.

    • B. 

      The movement of SOLVENT ONLY across a semipermeable membrane from an area of low concentration, to an area of high concentration

    • C. 

      The movement of SOLVENT & SOLUTE across a permeable membrane from an area of high concentration to an area of low concentration

  • 12. 
    A Hypotonic solution may do what to the cells of the body?
    • A. 

      The cell to shrink

    • B. 

      Nothing, the osmolar pressures are equal

    • C. 

      The cell to become really muscular

    • D. 

      The cell swells, and burst

  • 13. 
    Where would you find Laminar flow in the body?
    • A. 

      Terminal Bronchioles

    • B. 

      Carina

    • C. 

      Larger Airways

    • D. 

      Blood Flowing into the heart

  • 14. 
    Which statement is NOT TRUE regarding the flow of solutions?
    • A. 

      The greater the inflow is on one side of the tube than the outflow pressure is on the opposite side of the tube (pressure gradient)the greater the flow

    • B. 

      Doubling the radius leads to 16-fold increase in flow

    • C. 

      Halving of the radius decreases flow by half

    • D. 

      Tripling the radius increases flow 81 fold

  • 15. 
    Which one of the following is a good example of Bernoulli's law?
    • A. 

      Being aware of how air flows through larger (turbulent) and smaller (laminar) airways within lungs.

    • B. 

      The Venturi Mask effect where increasing velocity of flow decreases pressure exerted on walls of tube.

    • C. 

      Determining the partial pressure of O2 in a cylinder of air.

    • D. 

      Realizing that CO2 diffuses 20x faster than O2 due to increased solubility of CO2.

  • 16. 
    What is the chemical reaction that occurs within the C02 absorber?
    • A. 

      Reduction

    • B. 

      Oxidation

    • C. 

      Neutralization

    • D. 

      Hydrolysis

  • 17. 
    What is the MAIN component of SodaLyme?
    • A. 

      CaOH

    • B. 

      NaOH

    • C. 

      KOH

    • D. 

      H2O

  • 18. 
    What harmful substance is Desflurane known to cause more than other anesthetic agents upon breakdown in a CO2 aborber?
    • A. 

      Trifluoroacetylic acid

    • B. 

      Compound A

    • C. 

      Your gramma's perfume

    • D. 

      Carbon Monoxide

  • 19. 
    Electrocautery (Bovie) is used in surgery to provide homeostasis by burning blood vessels via an electrical current discharged from the machine to the patient. The energy is returned to the patient via a dispersive plate. Which surface is the best choice, from below, to place the dispersive plate?
    • A. 

      Thigh or Back

    • B. 

      On Big toe

    • C. 

      Neck

    • D. 

      Wrap around pointer finger

  • 20. 
    The Sagital plane divides the body into...
    • A. 

      Left and Right

    • B. 

      Superior and Inferior

    • C. 

      Anterior and Posterior

    • D. 

      Right and Wrong

  • 21. 
    What is the biggest concern when working in an operating room using lasers?
    • A. 

      Bathroom breaks because laser surgeries are very long

    • B. 

      Looking cool in whatever color glasses you are wearing

    • C. 

      What music the surgeon is playing

    • D. 

      Patient and Staff eye protection

  • 22. 
    What does Henry's law state?
    • A. 

      At a constant volume, the pressure of gas is directly proportional to the temperature.

    • B. 

      The amount of gas dissolved in a liquid is directly proportional to the partial pressure of the gas over the liquid and indirectly proportional to temperature

    • C. 

      At a constant temperature, the volume of gas varies inversely with the pressure.

    • D. 

      The total pressure of a mixture of gases in a closed container at a given temperature is equal to the sum of the pressure that each gas exerts

  • 23. 
    Flow through tubes is primarily dependent upon ___1____ , Flow through orifices is primarily dependent upon ____2____.
    • A. 

      Density, Viscosity

    • B. 

      Radius of tube, Radius of orifice

    • C. 

      Viscosity, Density

    • D. 

      Length of tube, length of orifice

  • 24. 
    Which of the follow is NOT a method of heat transfer?
    • A. 

      Convection

    • B. 

      Condensation

    • C. 

      Radiation

    • D. 

      Conduction

  • 25. 
    What is the hydration of SodaLyme?
    • A. 

      14-19%

    • B. 

      8-10%

    • C. 

      19-23%

    • D. 

      33%

  • 26. 
    What are the end products of the CO2 absorber?
    • A. 

      CO, H2O, and Heat

    • B. 

      Salts, Carbonates, and H2O

    • C. 

      CO, Carbonates, and Heat

    • D. 

      Carbonates, H20, Heat

  • 27. 
    Right now you are:
    • A. 

      Pretty darn tired of all this studying.

    • B. 

      Desperately wanting an alcoholic beverage.

    • C. 

      Praying to god you pass these tests.

    • D. 

      All of the above.

  • 28. 
    Which type of solution will precipitate upon cooling?
    • A. 

      Saturated

    • B. 

      Super Saturated

    • C. 

      Unsaturated

    • D. 

      Super Unsaturated

  • 29. 
    How do OR electrical systems work?
    • A. 

      Through a Line isolation monitor which grounds the electrical supply to protect staff and patients from shock.

    • B. 

      By providing a ground within each individual piece of equipment as well as in plugs for addition safety.

    • C. 

      Through an Isolation transformer which seperates electrical system from OR and provides no ground so you can safely touch one wire.

  • 30. 
    What is a Microshock?
    • A. 

      Occurs only in susceptible pateints where there is a direct connection between the heart and extrenal environment.

    • B. 

      An electrical shock that is very small, like static electricity.

    • C. 

      Gross current shock applied to surface of body.

    • D. 

      A Electrical shock that is mostly aborbed by tissues of body with minimal electrical shock going to the heart.

  • 31. 
    Which of the following will show a FALSE desaturation on your pulse ox monitor?
    • A. 

      Carbon Monoxide Poisoning

    • B. 

      Hypocarbia

    • C. 

      Administration of Methylene Blue dye

    • D. 

      Anemia

  • 32. 
    Which is the formula for Ohm's Law?
    • A. 

      PV=nrT

    • B. 

      Area x solubility x pressure gradient / MW x Distance x temp

    • C. 

      W = E x I

    • D. 

      E = I x R

  • 33. 
    A galvanic cell contains two electrodes and is used to measure O2. Describe the reaction which occurs inside the Galvanic cell.
    • A. 

      The gold and lead electrodes are consumed when electricity is produced.

    • B. 

      The lead electrode is consumed by the reactions of the galvanic cell.

    • C. 

      The gold electrode is consumed by the reactions of the galvanic cell.

    • D. 

      Exposure to room air will shorten the life of the galvanic cell since this will increase consumption of the elctrode.

  • 34. 
    Which of the following involves movement of a SOLVENT ONLY across a semi permeable membrane?
    • A. 

      Osmosis

    • B. 

      Diffusion

    • C. 

      Oncotic Pressure

    • D. 

      Hypnosis

  • 35. 
    Which other gas laws are part of Fick's law?
    • A. 

      Charles, Gay-Lusaacs & Boyles Law

    • B. 

      Nouba's & Lambert Beer's Law

    • C. 

      Henry's & Grahams law

    • D. 

      Ohm's & Daltons Law

  • 36. 
    What will happen to your flow if you double the length of your tubing?
    • A. 

      You will have 1/16 of flow

    • B. 

      You will have 1/2 flow

    • C. 

      You will double flow

    • D. 

      It will stay the same due to decrease pressure gradient

  • 37. 
    Which of the following is not one of the four factors which may change Laminar to Turbulent flow?
    • A. 

      High Gas Flows

    • B. 

      Changes in Diameter

    • C. 

      Volume of Solution

    • D. 

      Branching of tubes

  • 38. 
    Define Suspension.
    • A. 

      A solution in which a solute can not be dissolved

    • B. 

      The substance which is dissolved in a solution

    • C. 

      Homogenous mix of 2 or more substances in equal proportions.

    • D. 

      The principal kicking you out of school.

  • 39. 
    Vaporization is NOT dependent upon...
    • A. 

      Vapor Pressure of Agent

    • B. 

      Temperature of environment

    • C. 

      Amount of carrier gas used

    • D. 

      Density of Agent

  • 40. 
    Which statement is NOT TRUE about water?
    • A. 

      It is considered to be the universal solvent

    • B. 

      Heat increases density

    • C. 

      Cooling increases density

  • 41. 
    At room temp (20 C ) and at sea level the pressure reading on your O2 tank is 750 psi. There is a drastic change in temperature and now your tank reads 1275 psi. What temperature is it?
    • A. 

      30 C

    • B. 

      34 C

    • C. 

      12 C

    • D. 

      40 C

  • 42. 
    Which of the following is NOT TRUE about turbulent flow:
    • A. 

      It is governed by Reynold’s number (>2000)

    • B. 

      Results when molecules of a soltuion encounter walls of a tube in a rough tumbling pattern.

    • C. 

      It is caused by high flows, when tube wall is corrugated, & kinks or bends in the system

    • D. 

      Occurs when the density of a solution is decreased, and the radius is small

  • 43. 
    Which of the following Facilitates the flow of electrons?
    • A. 

      Inductance

    • B. 

      Capacitance

    • C. 

      Insulators

    • D. 

      Reflection