Neonates Chapter 14
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1. Which of the following is the goal of mechanical ventilation?
Provide adequate alveolar ventilation with minimal lung damage
Which of the following is the best definition of peak inspiratory pressure?
The maximum pressure exerted against the patient's airway during inspiration
What best describes wasted ventilation?
The ratio of physioogic deadspace to tidal volume
Of the following, which alter the duration of ventilation?
Assuming an alveolar opening pressure of 23 cm H2O, which of the following combinations of PIP and PEEP would achieve the desired compression pressure?
PIP-26, PEEP- 3
Normal lung compliance in a newborn is:
2.5 to 5 ml/cm H2O
Of the following, which are determinants of pulmonary compliance?
1. Elastic Elements
2. Alveolar surface forces
3. Plateau pressure
4. Airway resistance
5. Dynamic ventilatory pressures
- Elastic Elements
- Alveolar surface forces
As volume is extracted from the thorax at its unstressed volume, the ribs:
With overexpansion of the lungs caused by air trapping, lung compliance is:
RDS lowers lung compliance by:
Increasing alveolar surface forces
Which is the main factor that determines airway resistance?
The normal airway resistance in a spontaneously breathing neonate is:
20 to 30 cmH2O/L/sec
Endotracheal tube resistance can be reduced by:
Shortening the tube
In the presence of which of the following scenarios could shorter inspiratory times and faster rates be used without the risk of air trapping?
With a compliance of 3.6 ml/cmH2O and an airway resistance of 42 cm H2O/L/sec, what would be an appropriate expiratory time?
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