hosp I lab quiz-anesthetic machine (wkbk) – Flashcards
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Use of nitrous oxide in anesthesia
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decreases the amount of inhalation anesthetic required
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Mask inductions are
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more appropriately used in calm dogs and cats
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A half-full tank of nitrous oxide gas has a pressure of
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750 psi
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The oxygen flush valve
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allows oxygen to flow into the breathing system without going through the vaporizer
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The advantages of a nonbreathing system, as compared with a circle breathing system, include all of the following, except
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greater potential for hypothermia caused by high flows needed
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All inhalant anesthetic machines should have
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an anesthetic waste gas scavenging system
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Vaporizers may be classified according to all of the following, exccept the
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type of breathing circuit with which they can be used
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The volume of the rebreathing bag on an anesthetic machine should be at least
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three times the patient's tidal volume
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Pulse oximetry monitoring devices give an estimate of
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percentage of hemoglobin saturation with oxygen in arterial blood
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Which statement concerning soda lime is least accurate?
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it should be changed once a month
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If the rebreathing bag is empty during anesthesia, all of the following may be the cause, except
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the oxygen flow may be too high
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Nitrous oxide cylinders are painted what color?
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blue
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The approximate volume of oxygen in an E cylinder is
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700 L
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The approximate volume of oxygen in an H cylinder is
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7000 L
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The pressure of gas that enters the flowmeter of an inhalant anesthetic machine is
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50 to 60 psi
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There is evidence of increased health risks among people exposed chronically to trace levels of inhalant anesthetic gases. All of the following conditions have been associated with such exposure except
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insomnia
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All of the following are methods that reduce waste gas levels except
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chamber and mask inductions
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Which of the following is not an advantage for endotracheal intubation?
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increases dead space and allows for more efficient ventilation
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Which of the following is the most common complication of endotracheal intubation?
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placement of the tube in the esophagus
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The best method for determining the proper inflation of an endotracheal tube cuff is
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inject air while applying pressure from the reservoir bag until no air escapes around the tube
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Which of the following is not an advantage of using an endotracheal tube?
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increases the chances of airway obstruction
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The responsibilities of the anesthetist during a surgical procedure include continuous monitoring of the patient's vital signs and recording observations at approximately
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5-minutes intervals
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Adequate oxygen may be evaluated subjectively during anesthesia by the
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mucous membrane color and capillary refill time
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Following discontinuation of the anesthetic gas, periodic bagging of the patient with pure oxygen is advisable, because it
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helps reinflate collapsed alveoli
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Some anesthetics routinely bag the patient under inhalation anesthesia once every 5 minutes to help prevent
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atelectasis
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Throughout anesthesia, the animal's temperature should be maintained as close to normal as possible. Hypothermia can be prevented by all of the following measures except
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warming the stainless-steel V trough before using it
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After placing, lubricating, and inflating the cuff of the endotracheal tube, you note a sudden decrease in heart rate. The most likely cause is
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cuff may be overinflated, producing vagal-induced bradycardia
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Never use nitrous oxide
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in a closed anesthesia circuit
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Measures that help decrease waste anesthetic gas exposure include all except
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frequent changing of the soda lime canister
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Charcoal canisters attached to the exhaust of the anesthesia machine
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remove all gas anesthetic agents except nitrous oxide
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When cleaning up a gas anesthetic spill, you should do all of the following except
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dispose of in a paper bag in the trash in the surgical area
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Overinflation of the lungs during artificial ventilation
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may cause emphysema
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To quickly lighten the depth of anesthesia in a patient under inhalant anesthesia, the anesthetist should
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turn the vaporizer setting off or down
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If the soda lime canister is exhausted, the patient may become
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hypercapnic
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You have just completed filling the cuff on the endotracheal tube. the pressure relief valve is stuck in the closed position. your best option is to
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disconnect the patient from the anesthesia machine
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Way to minimize exposure to waste anesthetic gas include
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properly inflate the endotracheal tube cuff
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Gas cylinders that are a part of the anesthetic machine are attached to it by a
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yoke
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The type of nonrebreathing system that consists of inner tubing surrounded by larger corrugated tubing is
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Baines
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Nonrebreathing systems are generally recommended for patients that weigh
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less than 7 kg
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The false statement regarding nonrebreathing systems is
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they must have a CO2 absorber
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Medical oxygen cylinders are colored
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green
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The pressure in a full cylinder of compressed oxygen is _____ psi
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2000
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The recommended carrier gas flow rate for chamber induction of a small animal is ___ L/min
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5
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The false statements regarding scavenging systems is
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waste gases can be safely vented to the floor
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High-pressure system tests of the anesthetic machine check for
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oxygen or nitrous oxide leakage
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Soda lime granules in the CO2 absorber canister should be checked for color change
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during and upon comopleting the procedure
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To intabate a 45-lb dog, you should select an endotracheal tube with an internal diameter of ____ mm
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11
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A noncuffed endotracheal tube would most likely be used in a
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newborn kitten
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An anesthetized animal should receive sigh breaths every ____ minutes
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5 to 10
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Advantages of inhalant anesthetics over inhectable anesthetics include all of the following except
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less expensive
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What is the maximum effective length for a scavenger hose used with a passive system?
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20 feet
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Which of the following is least useful for detecting the proper placement of an endotracheal tube?
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feeling air come out of the tube when pressing on the chest
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What is the standard color of medical nitrous oxide cylinders, and what is the pressure in a full cylinder?
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blue; 750 psi
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Mask induction of anesthesia using inhalation agents is
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best accomplished using a volatile anesthetic that is relatively insoluble in body fluids, such as isoflurane
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When using a gas flowmeter with a spherical (floating ball) indicator, the flow should be read
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at the center of the indicator
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The pressure in a full medical O2 tank is
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2000 psi
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For which of the following can a vaporizer not be compensated?
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solubility coefficient
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A half-full nitrous oxide cylinder should be
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blue, with a pressure of 750 psi
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Pin indexing on inhalant anesthetic machines is used to
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prevent oxygen and nitrous oxide cylinders from being exchanged
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Which of the following has not been associated with long-term exposure to waste anesthetic gases?
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carcinogenic effects
