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Barry Breathing syst Barry Breathing systems

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Barry Breathing syst Barry Breathing systems Question Answer Which breathing system adds the least resistance? Open What are some sources of resistance (5) Connectors, HME, CO2 absorbers, ETT, Tubing Where is the most resistance in the intubated patient? @ the connection between the ETT and "Y" piece Where is the most resistance in the unintubated patient? @ expiratory valve in a semi closed system 2 types of Nonrebreathing systems -Open(insufflation)-SemiOpen(mapleson) 2 types of Circle systems -Semi-Closed (partial rebreathing)-Close (rebreathing) How are circuits classified in terms of -Fresh gas in flow rate-Gas reservior bag-Rebreathing exhaled presence or absence of????? (5) gas-Chemical neutralization of CO2-Unidirectional valves What are the characteristics of an open system no reservoir bag,rebreathing, CO2 neutralization or valves. IT HAS NOTHING! What is insufflation in an open system? Delivery of gas from the anesthesia machine via circuit or mask held above the pts face What is open drop? also classified as open & semiopen used in wther or chloroform. (drop liquid on a cone) What are the characteristics of a semi-open system? has a gas reservior bag, corregated tubing(except mapleson C) an APL (except mapleson E) and a common source of fresh gas. What is Mapleson A used for? **Spontaneously Breathing patients**APL is open during expiration so you can't truely vent someone.No Rebreathing, so it is most efficent for CO2 elimination during spont. ventilation Mapleson B Less efficent that mapleson A during spont vent secondary to mixture of gases & FGF required. ***Can be used with any mode of VENT. Mapleson C Like B but shorter expiratory limb.Not efficent or economical****Can be used with any mode of vent Mapleson D Like "A" except APL and FGF are REVERSED. -Efficent CO2 elimination regardless of mode of vent. Bain Circuit Its a version of "D" can WARM FGF*Its disposable but the inner tube can kink Mapleson E Has T-PIECE!Not commonly usedNo reservior Bag Mapleson F Modified T-PieceHAS a reservior Bag. Jackson Rees Used for PediatricsLow resistance minimal dead space. What is the order of Circuits for Continously Vented Patients DEAD BODIES CAN'T ARGUED>B>C>A Order of Circuits for spontaneously vented patients ALL DOGS CAN BITEA>D>C>B What is the most commonly used system today? Semi-closed circle system How long are the Corregated tubing limbs? 22mm What is the volume of Gas in a reservior Bag? 60L/min What is are features of the closed systems? APL is closed, Maintains humidification, Problem of Closed systems unknown gas concentration and unpredicted O2 amounts. What 2 types of noninvasive ventilation and give examples Negative pressure (iron lung)Possitve pressure (Cpap, bipap, mask PSV) 4 phases of ventilatory cycle 1.inspiration2.inspiration to expiration3.expiration4. expiration to inspiration what is a volumed cycled vetilation aka Controlled Mechanical Vent (CMV) Varies with inspiration duration and pressure to give preset volume, TV and rate. ***Pt is entirely under vent control What is Assit control Ventilation?(ACV) Pre

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