Exam Preview for 1906: Liberation from Mechanical Ventilation: A Ph

Liberation from Mechanical Ventilation: A Physiologic and Historical Perspective

Please note: exam questions are subject to change.

1. According to Dr. Tom Petty's Razor of Ventilator Dependence, what is the key factor that allows patients to resume unassisted breathing? When sedation is completely discontinued When minute ventilation demand decreases to match respiratory muscle capacity When the patient can maintain a normal arterial CO2 level When positive end-expiratory pressure (PEEP) is reduced to zero
2. What percentage of acute respiratory failure patients have been found to have diaphragmatic weakness at ICU admission? 34% 51% 64% 80%
3. What was a significant finding regarding Spontaneous Breathing Trials (SBTs) in weaning patients from mechanical ventilation? SBTs increased the number of ventilator-free days SBTs significantly reduced weaning days compared to SIMV and PSV SBTs were less effective than pressure support ventilation SBTs showed no difference in outcomes compared to other weaning methods
4. According to the information presented, what is true about the Work of Breathing (WOB) during successful weaning and extubation? WOB must always be within normal range for successful extubation A higher than normal WOB always indicates failed extubation Successful extubation can occur even with an elevated WOB WOB has no impact on weaning and extubation success
5. According to the slide, which of the following factors is often overlooked when considering weaning strategies for patients with prolonged periods of respiratory distress? Nutritional status Baseline lung function Age of the patient Sleep deprivation