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Which of the following best define hypoxia? Tissue oxygen delivery is inadequate to meet cellular needs. Blood hemoglobin levels are less than normal (15 g/dl). The arterial PCO2 is greater than normal (45 mm Hg). The arterial PO2 is greater than normal (100 mm Hg).  

Approximately how far should the tip of the ET tube be seen above the carina when the tube has been placed in ‘ideal’ position? 1-2 cm H2O 2-3 cm H2O 3-5 cm H2O 5-7 cm H2O

A patient in the ICU has a blood drawn and analyzed.  The following data shows:  PB 860 mm Hg              Hb 18.6 gm/dL PaO2 50 mm Hg           SaO2 82%           PvO2 25 mm Hg           SvO2 45% PaCO2 60 mm Hg              What is this patient’s total arterial O2 content?

Which of the following are present when diagnosing a respiratory failure? (Multiple Answers)  PaO2 50 mm Hg, FIO2 .21, PB 760 mm Hg  P(A-a)O2 45 mm Hg, FIO2 .21, PB 760 mm Hg  PaO2/FIO2 400, FIO2 .21, PB 760 mm Hg

Which of the following diseases are typically evaluated using high-resolution CT? (Multiple Answers)  Asthma  Bronchiectasis  Emphysema  Pulmonary fibrosis

The following data was obtained from a 45-year-old female patient admitted for pulmonary complications arising from kyphoscoliosis. Assess the following PFS. TEST                       ACTUAL                PRED                %PRED TLC                            3.13                       4.09                   76% FRC                           1.44                       1.96                   73% RV                              0.85                       1.09                   78% VC                              2.28                       2.92                   78% FVC                            2.28                       2.92                   78% FEV1                          1.75                       2.20                   79% FEV1/FVC                 77%                       75%                   —– FEF200-1200                4.46                       5.40                   83% FEF25-75                     2.97                       3.67                   81%  normal pulmonary function    mild obstructive disease  mild restrictive disease   moderate obstructive disease 

A 32-year-old female patient has been complaining of shortness of breath.  She has worked in a textile factory for 12 years.  The following PFT values are hers.  What would be the correct evaluation for this patient? TESTS          ACTUAL        PREDICTED       %PREDICTED FVC                 2.38                    3.9                         61% FEV1               1.83                    2.9                         63% FEV3               2.24                    3.7                         61% FEV1/FVC %   77%                  74%                        —— FEF25%-75%      2.5                     4.2                         59% MVV                 76                      96                         79% RV                    .61                     .97                         63% TLC                  2.99                   4.8                         62%

Which of the following modes of ventilatory support would you recommend for an alert hypoxemic patient with congestive heart failure?  

What is the most common cause of cephalization as seen on the upright chest film?  Empyema  Hypoxemia  Left heart failure  Renal failure

Which of the following could cause an increase in physiologic shunt? (Multiple Answers)