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PULMONARY

CCRN

QuestionAnswer
Normal pressures in the cuff should be kept in which range? 15 to 20 mmHg
Normal arterial Po2 levels (at sea level) fall within which of the following ranges? 80 to 100 mmHg
Normal venous Po2 levels (at sea level) fall within which of the following ranges? 35 to 40 mmHg
Normal arterial hemoglobin saturation (SaO2) falls within which of the following ranges? > 0.95
Normal mixed venous hemoglobin saturation (Svo2) falls within which of the following ranges? 0.60 to 0.80
What worsen dynamic compliance? A.OBESITY B. AIRWAY SECRETIONS C. THIRD-TRIMESTER PREGNANCY
VITAL CAPACITY MAXIMAL INSPIRATION FOLLOWED BY MAXIMAL EXPIRATION
DEAD-SPACE VENTILATION THE AMOUNT OF AIR THAT DOES NOT PARTICIPATE IN GAS EXCHANGE.
ALVEOLAR VENTILATION MINUTE VOLUME MINUS DEAD SPACE VENTILATION
NORMAL DEAD SPACE LEVEL 25% TO 35%
THE MOST COMMON CAUSE OF HYPOXEMIA? INTRAPULMONARY SHUNTS
AN ESTIMATE OF INTRAPULMONARY SHUNTING Pao2/FiO2 ratio
FiO2 (fraction of inspired oxygen) THE PERCENT OF OXYGEN DURING INSPIRATION
Normal oxygen tension (Pao2) on exposure to 100% oxygen 400 to 600 mmHg
Intrapulmonary shunting ranges 0 to 5%
Which parameter is used as an estimate of alveolar ventilation (Va)? Paco2
At which pH is an acidosis generally treated? < 7.25
How is the pulmonary artery occlusive pressure (PAOP) used in differentiating ARDS from cardiogenic-induced pulmonary edema? A low PAOP with large intrapulmonary shunts suggests ARDS.
Oxygen toxicity is thought to develop with which level of FiO2? > 50% for longer than 24hrs
What is an indication for PEEP therapy? TO ALLOW REDUCTION IN FiO2 LEVELS
PRESSURE-SUPPORT VENTILATION (PSV) differs from synchronized intermittent mandatory ventilation (SIMV) and AMV in which ways? SIMV and AMV are volume-limited, PSV is pressure-limited.
What is a complication of mechanical ventilation and PEEP therapy? REDUCED CARDIAC OUTPUT
What is the highest FiO2 that can generally be achieved with a nasal cannula? 40%
What condition produces both ventilation and perfusion disturbances? CHRONIC BRONCHITIS OR COPD
In a pleural drainage system what indicates an active pleural leak? BUBBLING IN THE WATER-SEAL CHAMBER
What condition may lead to a tension pneumothorax? CLOSED PNEUMOTHORAX
Which finding would be an indication of a ruptured diaphragm? BOWEL SOUNDS IN THE CHEST
Created by: nerdismart