Term
| WHAT ARE DOUBLE CIRCUIT VENTILATORS? |
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Definition
| ONE CIRCUIT CONTAINS PATIENT GAS AND ONE CIRCUIT CONTAINS DRIVE GAS |
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Term
| DESCRIBE DRIVING FORCE IN RELATION TO BELLOWS? |
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Definition
| PRESSURIZED GAS THAT COMPRESSES THE VENTILATOR BELLOWS (ANALOGOUS TO RESERVOIR BAG). THE BELLOW IN TURN DELIVERS VENTILATION TO THE PATIENT. |
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Term
| WHAT CAN THE DRIVING GAS BE? |
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Definition
| 100% OXYGEN, AIR, OR A MIXTURE OF BOTH. |
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Term
| WHICH GAS LEAVES THE SYSTEM FIRST, DRIVED GAS OR PATIENT GAS? |
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Definition
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Term
| VENTILATION RELEASE VALVE IS CLOSED WHEN? |
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Definition
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Term
| WHEN SHOULD THE VENTILATORY RELEASE VALVE BE OPENED? |
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Definition
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Term
| WHEN DOES ASCENDING BELLOWS ASCEND? |
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Definition
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Term
| WHEN DOES DESCENDING BELLOWS DESCEND? |
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Definition
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Term
| WILL THE BELLOWS FILL IF A TOTAL DISCONNECT OCCURS? |
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Definition
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Term
| FOR A DESCENDING BELLOW IF THERE IS DISCONNECT WILL IT CONTINUE TO GO UP AND DOWN? |
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Definition
| YES. DRIVING GAS PUSHES BELLOWS UP DURING INSPIRATION; DURING EXPIRATION WITH DISCONNECT ROOM AIR ENTRAINED D/T WEIGHTED BELLOWS. |
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Term
| HOW IS PEEP PRODUCED IN THER SYSTEM? |
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Definition
| R/T TO THE WEIGHT OF THE BOBBIN. THIS CAUSES 2-3CMH20. |
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Term
| DURING THE INSPIRATORY PHASE DESCRIBES WHAT HAPPENS? |
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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. |
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Term
| DESCRIBE WHAT HAPPENS WITH THE BELLOWS IN THE EXPIRATORY PHASE. |
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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. |
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Term
| HOLWS IN THE BELLOWS MAY LEAD TO WHAT? |
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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. |
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Term
| AN INCOMPETENT VENTILATOR RELIEF VALVE MAY RESULT IN WHAT? |
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Definition
| HYPOVENTILATION B/C ANESTHETIC GASES ARE DELIVERED TO SCAVENGING INSTEAD OF PATIENT DURING INSPIRATORY PHASE. |
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Term
| WHAT ARE 3 THINGS THAT CAN RESULT IF THERE IS A VENTILATOR RELIEF VALVE PROBLEM? |
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Definition
| DISCONNECTED PILOT LINE, A RUPTURED VALVE, OR FROM A DAMAGED FLAPER VALVE. |
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Term
| A VENTILATOR RELIEF VALVE THAT IS STUCK IN THE CLOSED OR PARTIALLY CLOSED POSITION MAY PRODUCE WHAT? |
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Definition
| BAROTRAUMA OR EXCESS PEEP. |
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Term
| DESCRIBE FRESH GAS DECOUPLING. |
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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. |
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Term
| AS A SAFETY MECHANISM DURING FRESH GAS DECOUPLING, DURING INSPIRATION FGF IS NOT ADDED TO THE DELIVERED TIDAL VOLUME. WHERE IS IT ADDED? |
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Definition
| IT IS DIVERTED TO THE MANUAL BREATHING BAG BECAUSE OF DECOUPLING VALVE IS CLOSED. THIS REMAINS IN CIRCUIT DURING MECHANICAL VENTILATION. |
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Term
| WHEN THERE IS A DISSCONNECT WIL ASCENDING BELLOWS REFILL? |
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Definition
| NO. MONITOR CHEST EXCURSION |
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Term
| THE DISSCONNET ALARM: THRESHOLD PRESSURE ALARM WHOULD BE SET WITHIN WHAT? |
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Definition
| 5CM H2O OF PIP, IF SET BY FACTORY IT IS AUTOMATICALLY SET AT 3-5CMH20 BELOW THE PIP. |
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