Other
for mid-trachea, inspired gas reaches what degree celcius with absolute humidity?
34C
When does the inefficient mucociliary transport occur?
Overhumidification
Which Mapleson circuits doesnot have reservoir bag?
E
What is the soda lime mesh size?
4 to 8 mesh
Which anesthesia agents do not produce significant CO?
Sevo and Halothame
Benefits of Disc on knife edge vales
Low resistance and high compliance (open easily, close quickly and completely)
Which breathing circuit does not have rebreathing or reservoir?
Open
Mapleson Circuits does not have
CO2 absorber and unidirectional valves
Golden standard to assess CO2 removal
Capnography- monitoring of inspired CO
What is channeling
the preferential flow of gas along the canister walls or within the absorbent, bypassing some of the soda lime and reducing its effectiveness.
Tightening the APL valve causes?
Increase PEEP
How would you fit anesthesia mask?
between the interpupillary line over the nose and in the groove between the mental process and the alveolar ridge.
Most efficient Mapleson circuit, its FGF and APL location
A, FGF - near the bag, APL near the patient
Soda Lime absorption capacity
100g of soda lime absorbs 26L of CO2
Which component of breathing help seal the mask
inflatable cuff
Name some consequences of Overhumidification
Reduced mucosal viscosity and risk of water intoxication
Thermal injury to the epithelium (tracheitis)
Increased airway resistance
Which breathing circuit has FGF<min ventilation? does it have rebreathing & reservoir?
Semi-closed
Rebreathing - yes (partial)
Reservoir - yes
Bain Circuit coaxial after which Mapleson design
D
Calcium hydroxide Lime Equation
2. Carbonic acid (H2CO3) + Calcium hydroxide (Ca(OH)2) -> calcium carbonate (CaCO3) + 2 Water (2H2O) + Heat
With HME, what is the daily net loss of water and calorie in adult?
250 ml water and 250 Kcals
Name some consequences of underhumidification.
Exacerbation of hypothermia (neonates/children)
bronchial obstruction
V/Q mismatch
mucosal inflammation and ulceration
Characteristics of breathing tubing
1 meter long
22mm large bore
Which mod does Maple D circuit support
Controlled
Soda Lime Equation
1. Carbon dioxide (CO2) + Water (H2O) -> Carbonic acid (H2CO3)
2. Carbonic acid (H2CO3) + 2 Sodium hydroxide (2NAOH) -> sodium carbonate (Na2CO3) + 2 Water (2H2O) + Heat
3. Sodium carbonate (Na2CO3) + Calcium hydroxide (Ca(OH)2 -> Calcium carbonate (CaCO3) + 2 sodium hydroxide (2NaOH)
Name the patient connection pieces
Y-piece or elbow