Mechanical Ventilation I Chapter 6 Pilbeams.docx

Minute Ventilation (VE) - correct answer Men = 4 × BSA Women = 3.5 × BSA -Increases: By 5% every degree above 99F by 10% every degree above 37C, 20% for metabolic acidosis, 50%-100% if resting energy expenditure is equally increased- Decreases: 10% per degree celsius between 35 and 37C IBW Equation - correct answer Men IBW (lbs) = 106 + 6(H − 60) Women: IBW (lbs) = 105 + 5(H − 60) Remember, adult lungs do NOT - correct answer get larger as he or she gains weight VT vary depending on the - correct answer lung pathology ARDS - correct answer x by 4-6 COPD - correct answer x by8-10 Normal Lungs - correct answer x 6-8 Mechanical dead space considerations - correct answer Corrugated tubing between the Y-connector and the ETT connector The mean airway pressure is higher - correct answer with descending flow waveforms. The peak inspiratory pressure is higher - correct answer with ascending flow waveforms. peak inspiratory pressure is lower - correct answer with descending flow waveforms. Descending waveforms improve - correct answer gas distribution and arterial oxygenation. Inspiratory Pause during Volume Ventilation Is used to - correct answer Obtain measurements of PplateauImprove distribution of air throughout the lungsNot in patients with COPD and flow limitationPause not commonly used in clinical practice Goals of adjusting PSV are: - correct answer To help increase VT (4-8 mL/kg) To decrease respiratory rate (to 30 breaths/min) To decrease work of breathing (WOB) associated with breathing through an artificial airway