A respiratory therapist intends to change the I:E during VC ventilation.  Flow is constant during inspiration.  Which of the following can be adjusted to accomplish this change? volumemandatory ratesensitivity inspiratory flow1.yesyesyesno2.yesyesnoyes3.yesnoyesyes4.noyesyesyes

While performing a patient-ventilator check, a respiratory therapist observes very little condensation in the heated wire circuit.  The heated wick humidifier contains an appropriate amount of water.  The most likely explanation is that the

A 32-year-old non-smoker presents with persistent shortness of breath.  The following spirometry data are obtained: Pre-bronchodilator                 Post-bronchodilator FEV1                     3.8 L                          4.6 L FVC                     6.29 L                          6.14 L FEV1/FVC           60%                        75%A respiratory therapist should NEXT recommend

The following patient data are obtained:CaO2 Pv¯O2 Sv¯O2 Hb12 vol%30 torr60%10 g/dL             The patient’s C(a-v¯)O2 is approximately

The following pulmonary function results are obtained for a patient:       .   Observed  Predicted % Predicted             . FVC 3.40 5.90 57.6% FEV1 0.50 4.00 12.5% FEV1/FVC 14 70 FEF25-75% 0.77 4.50 17.0% TLC 8.40 7.30 115.0% A respiratory therapist should recommend a treatment plan for

A patient has been receiving mechanical ventilation through a tracheostomy tube for 16 days.  The patient begins to thrash about in the bed following withdrawal of a drug-induced coma.  The patient’s tracheostomy tube has become dislodged.  Following appropriate sedation, a respiratory therapist should NEXT

Which of the following assessments can be made from a pressure-volume loop? . presence of inspiratory work     amount of  air trapping   pulmonary compliance spontaneous tidal volume A YES YES YES NO  B YES YES NO  YES C YES NO  YES YES D NO  YES YES YES  

 The following capnographic tracing is noted for a patient receiving mechanical ventilation:A respiratory therapist should

 An adult victim of a burn injury is being monitored in the ICU.  Patient data are as follows:Pv¯O2               45 torrPCWP                4 mm HgPPA              11 mm HgCVP                4 cm H2OUrine output     5 mL/hrA respiratory therapist should conclude the patient is

A 39-year-old patient who is morbidly obese is admitted to the ED with fever, productive cough, and shortness of breath.  The patient’s vital signs are stable and he is awake and alert.  After initiation of bronchodilator therapy and antibiotics, results for serial blood gas analyses reveal:                           10 AM         11 AMFIO2                    0.21         0.50pH                       7.28         7.22PaCO2                72 torr      85 torrPaO2                  45 torr      56 torrHCO3-                34 mEq/L 35 mEq/LBE                       +5 mEq/L   +4 mEq/LSaO2 (calc)            80%         89% The patient’s clinical condition remains unchanged.  Which of the following should a respiratory therapist do NEXT?