Adult II Mechanical Vent for Test 2
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| Tension pneumothorax | air accumulating in the pleural space increases to a dangerous level, causing a mediastinal shift that pushes the heart, great vessels,trachea, and lungs toward the unaffected side.
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| signs/symptoms of tension pneumothorax | severe respiratory distress, tracheal deviation to the unaffected side, cyanosis, muffled heart sounds, and possibly cardiac arrest
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| Central Venous Pressure CVP | The amount of blood returning to the heart
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| P wave | 1st positive deflection lasts .06 to .11 sec
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| P-R Interval | 0.12-.20 sec represents the time of impulse transmission from the SA node to the AV node
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| QRS Interval | .04 to .12 seconds depolarization of ventricles
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| QT | .34 to .43 seconds represents entire cardiac cycle
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| T wave | 0.16 seconds repolarization of cardiac fiber if elevated the heart is not resting
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