The calculated QS/QT is about _ and it reflects _ shunting.ġ9. A patient has the following oxygen content measurements: CcO2 = 20 vol%, CaO2 = 18 vol%, CvO2 = 13 vol%. What portion of the tidal volume is considered wasted (deadspace) ventilation?ġ8. The blood gases and related parameters of a patient are as follows: pH = 7.43, PaCO2 = 40 mm Hg, PaO2 = 80 mm Hg, PECO2 = 30 mm Hg.
Which of the following patient conditions is the least important consideration prior to weaning a patient from mechanical ventilation?ġ7. The _ is used to estimate how much pulmonary perfusion is wasted.ġ6. Readiness of a patient to begin the weaning trial.ġ5. Which of the following actions would be appropriate at this time?Ĭ. There have been no other changes to the ventilator settings. While assessing a 64 year-old patient receiving volume controlled ventilation, you note that the peak airway pressure has decreased from 52 cm H2O to 32 cm H2O. The P(A-a)O2 should be < 450 mm Hg while on 100% O2.ġ4. PaCO2 of less than 65 mm Hg with normal pHġ3. Minute ventilation of less than 15 L with satisfactory blood gasesĬ. Generally accepted ventilatory weaning criteria includes a _.Ī.
_ remains an effective tool in altering the degree of partial ventilatory support during continuous mechanical ventilation.ġ2. Patients who fail the spontaneous breathing trial (SBT) may exhibit which of the following clinical signs and symptoms:ġ1. Patients who fail the SBT often do so within the first 10 minutes of the trial.ĩ. The _ is measured by dividing the patient’s tidal volume (measured at the airway opening) by the difference in the plateau pressure and the PEEP.Ĩ.
If pulse oximetry is used to monitor a patient’s oxygenation status, the pulse oximetry O2 saturation (SpO2) should be kept in the mid-80s for allowance of machine inaccuracies.ħ. Maximal inspiratory pressure = -12 cm H2OĦ. All of the following pulmonary measurements suggest readiness for weaning attempt except:Ī. Other causes of increased airflow resistance during mechanical ventilation include all of the following conditions except:ĥ. Terminal weaning is defined as _ of mechanical ventilation that results in the _ of a patient.Ĥ. Based on the weaning protocol described in the textbook, all of the following conditions must be met for consideration of a weaning attempt except:ģ. Which of the following is an indicator of weaning failure?Ģ. Mechanical Ventilation Final Exam Practice Questions:ġ.
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