WorksheetsQUARTERLY FEBRUARY 2020: Embuscado (Inhaled Anaesthetics)
Total questions: 10
Worksheet time: 7mins
Factors that can increase Compound A production, EXCEPT:
High fresh gas flow (> 15 LPM)
Higher sevoflurane concentration
Higher temperature in the absorbent
Fresh absorbent
Advantage of the circle system:
Bypasses the CO2 absorber and eliminates CO2 primarily by increasing fresh gas flow
Exhaled gases in the outer reservoir tubing add warmth by countercurrent heat exchange to inspired fresh gases
Less dead space compared to most Mapleson circuits
Maintenance of relatively stable inspired gas concentrations
TRUE regarding the Bain circuit, EXCEPT:
The outer corrugated tubing must be opaque to protect the inner tubing from sunlight
Exhaled gases in the outer reservoir tubing add warmth by countercurrent heat exchange to inspired fresh gases
It is lightweight and disposable
Scavenging of waste gases from the APL valve is facilitated because the valve is located away from the patient and close to the reservoir bag
Three rules of the circle system, EXCEPT:
A unidirectional valve must be located between the patient and the reservoir bag on both the inspiratory and expiratory limbs of the circuit
The fresh gas inflow cannot enter the circuit between the expiratory valve and the patient
The pop-off valve cannot be located between the patient and the inspiratory valve
The Y-piece connector is removed from the system to conserve respiratory moisture and heat
Functions of the hanger yoke assembly, EXCEPT:
Attaches the medical gases supplied in E-cylinders to the anesthesia machine
Provides a gas-tight seal
Prevents delivery of a hypoxic gas mixture
Ensures a unidirectional flow of gases into the machine
True regarding second-stage pressure regulator, EXCEPT:
This regulator supplies a constant pressure to the oxygen flow control valve regardless of fluctuating oxygen pipeline pressures
Located downstream from the nitrous oxide supply source in the intermediate pressure circuit
Further reduces the pressure from 12 to 19 psi
Ensures a unidirectional flow of gases into the machine
Corrective actions that must be done in cases of a pipeline crossover:
Disconnect pipeline supply and connect the endotracheal tube to a Jackson-Rees circuit
Backup oxygen cylinder must be turned on and disconnect pipeline supply
Turn on medical air supply tank and connect the endotracheal tube to a self-inflating ambu bag
Turn on backup oxygen cylinder. No need to disconnect pipeline supply.
True of Diameter Index Safety System, EXCEPT:
Prevents back flow into the vaporizer during PPV
Provides threaded, noninterchangeable connections for medical gas lines
A check valve is located downstream from the inlet; it prevents reverse flow of gases from the machine to the pipeline or atmosphere
Minimizes the risk of misconnection
Most fragile pneumatic component of the anesthesia machine:
Y-piece
Unidirectional valves
Glass flow tubes
APL valve
The only machine safety device that evaluates the integrity of the low-pressure circuit in an ongoing fashion:
Oxygen analyzer calibration
Pulse oximeter
End-tidal CO2 monitor
Second-stage pressure regulator
