Shared Flashcard Set

Details

Scavenging and Anesthesia Ventilators
Part 3
21
Nursing
Graduate
11/04/2014

Additional Nursing Flashcards

 


 

Cards

Term
WHAT ARE DOUBLE CIRCUIT VENTILATORS?
Definition
ONE CIRCUIT CONTAINS PATIENT GAS AND ONE CIRCUIT CONTAINS DRIVE GAS
Term
DESCRIBE DRIVING FORCE IN RELATION TO BELLOWS?
Definition
PRESSURIZED GAS THAT COMPRESSES THE VENTILATOR BELLOWS (ANALOGOUS TO RESERVOIR BAG). THE BELLOW IN TURN DELIVERS VENTILATION TO THE PATIENT.
Term
WHAT CAN THE DRIVING GAS BE?
Definition
100% OXYGEN, AIR, OR A MIXTURE OF BOTH.
Term
WHICH GAS LEAVES THE SYSTEM FIRST, DRIVED GAS OR PATIENT GAS?
Definition
DRIVED
Term
VENTILATION RELEASE VALVE IS CLOSED WHEN?
Definition
ON INSPIRATION
Term
WHEN SHOULD THE VENTILATORY RELEASE VALVE BE OPENED?
Definition
DURING EXPIRATION
Term
WHEN DOES ASCENDING BELLOWS ASCEND?
Definition
DURING EXPIRATION
Term
WHEN DOES DESCENDING BELLOWS DESCEND?
Definition
DURING EXPIRATION PHASE
Term
WILL THE BELLOWS FILL IF A TOTAL DISCONNECT OCCURS?
Definition
NO
Term
FOR A DESCENDING BELLOW IF THERE IS DISCONNECT WILL IT CONTINUE TO GO UP AND DOWN?
Definition
YES. DRIVING GAS PUSHES BELLOWS UP DURING INSPIRATION; DURING EXPIRATION WITH DISCONNECT ROOM AIR ENTRAINED D/T WEIGHTED BELLOWS.
Term
HOW IS PEEP PRODUCED IN THER SYSTEM?
Definition
R/T TO THE WEIGHT OF THE BOBBIN. THIS CAUSES 2-3CMH20.
Term
DURING THE INSPIRATORY PHASE DESCRIBES WHAT HAPPENS?
Definition
DRIVING GAS ENTERING THE BELLOWS CHAMBER CAUSES PRESSURE TO INCREASE; RESPONSIBLE FOR 2 EVENTS; VENTILATOR RELIEF VALVE CLOSES WHICH PREVENTS GAS TO ESCAPE VAI SCAVENGE SYSTEM. 2_ BELLOWS IS COMPRESSED AND ANESTHETHIC GAS IS WITHIN THE BELLOWS IS DELIVERED TO THE PATIENT'S LUNGS.
Term
DESCRIBE WHAT HAPPENS WITH THE BELLOWS IN THE EXPIRATORY PHASE.
Definition
DRIVING GAS EXITS THE BELLOWS HOUSE. THIS PRODUCES A DECREASE TO ATMOSPHERIC PRESSURE WITHIN BOTH THE BELLOWS HOUSING AND THE PILOT LINE TO VENTILATOR RELIEF VALVE. MUSHROOM VALVE PROTION OPENS. EXHALED PATIENT GAS FILLS BELLOWS BEFORE SCAVENGING BEGINS.
Term
HOLWS IN THE BELLOWS MAY LEAD TO WHAT?
Definition
ALVEOLAR HYPERINFLATION AND POSSIBLY BAROTRAUMA IF HIGH-PRESSURE DRIVING GAS ENTERS THE PATIENT CIRCUIT. O2 CONCENTRATION MAY INCREASE OR DECREASE DEPENDING ON DRIVE GAS COMPOSITION.
Term
AN INCOMPETENT VENTILATOR RELIEF VALVE MAY RESULT IN WHAT?
Definition
HYPOVENTILATION B/C ANESTHETIC GASES ARE DELIVERED TO SCAVENGING INSTEAD OF PATIENT DURING INSPIRATORY PHASE.
Term
WHAT ARE 3 THINGS THAT CAN RESULT IF THERE IS A VENTILATOR RELIEF VALVE PROBLEM?
Definition
DISCONNECTED PILOT LINE, A RUPTURED VALVE, OR FROM A DAMAGED FLAPER VALVE.
Term
A VENTILATOR RELIEF VALVE THAT IS STUCK IN THE CLOSED OR PARTIALLY CLOSED POSITION MAY PRODUCE WHAT?
Definition
BAROTRAUMA OR EXCESS PEEP.
Term
DESCRIBE FRESH GAS DECOUPLING.
Definition
TO SEPARATE THE FGF FROM THE TIDAL VOLUME. IT IS THE COMPENSATION OF DELIVERED TIDAL VOLUME FOR CHANGES IN FGF. DELIVERED TIDAL VOLME IS THE SUM OF THE VOLUME DELIVERED FROM THE VENTILATOR AND THE FRESH GAS FLOW DURING INSPIRATORY PHASE. ACTUAL TV MAY CHANGE AS FGF CHANGES.
Term
AS A SAFETY MECHANISM DURING FRESH GAS DECOUPLING, DURING INSPIRATION FGF IS NOT ADDED TO THE DELIVERED TIDAL VOLUME. WHERE IS IT ADDED?
Definition
IT IS DIVERTED TO THE MANUAL BREATHING BAG BECAUSE OF DECOUPLING VALVE IS CLOSED. THIS REMAINS IN CIRCUIT DURING MECHANICAL VENTILATION.
Term
WHEN THERE IS A DISSCONNECT WIL ASCENDING BELLOWS REFILL?
Definition
NO. MONITOR CHEST EXCURSION
Term
THE DISSCONNET ALARM: THRESHOLD PRESSURE ALARM WHOULD BE SET WITHIN WHAT?
Definition
5CM H2O OF PIP, IF SET BY FACTORY IT IS AUTOMATICALLY SET AT 3-5CMH20 BELOW THE PIP.
Supporting users have an ad free experience!