Weaning and Extubation of Mechanical Ventilation

What is the recommended duration for a spontaneous breathing trial (SBT) to assess readiness for extubation?

• 10 minutes
  

• 30 minutes

• 1 hour

• 2 hours

2. Which of the following parameters is often assessed during a spontaneous breathing trial?

• Heart rate
  

• Blood pressure

• Arterial blood gases (ABG)

• All of the above

Which of the following is a common indication for performing a spontaneous breathing trial?

• Patient is fully awake
  

• Patient has a stable respiratory rate

• Patient is on minimal sedation

• All of the above

What is the primary goal of a spontaneous breathing trial (SBT)?

• To assess the need for mechanical ventilation
  

• To evaluate the patient's ability to breathe independently

• To monitor the patient's heart function

• To determine the effectiveness of sedation

During a spontaneous breathing trial, which of the following signs may indicate failure?

• Increased respiratory effort
  

• Decreased oxygen saturation

• Altered mental status

• All of the above

What is the most common reason for a patient to fail a spontaneous breathing trial?

• Anxiety
  

• Respiratory muscle fatigue

• Excessive secretions

• All of the above

Which of the following is NOT a contraindication for performing a spontaneous breathing trial?

• Severe respiratory acidosis
  

• Unstable cardiovascular status

• Patient is alert and cooperative

• High levels of sedation

What is the typical monitoring frequency for vital signs during a spontaneous breathing trial?

• Every 5 minutes
  

• Every 15 minutes

• Every 30 minutes

• Continuous monitoring

A patient is being evaluated for extubation. Which of the following findings would indicate that the patient is NOT ready for extubation?

• Spontaneous tidal volume of 5 mL/kg

• Adequate cough reflex
  

• FiO2 requirement < 0.4
  

• Rapid shallow breathing index (RSBI) < 105

A patient has successfully passed a spontaneous breathing trial. What is the next step in the extubation process?

• Extubate immediately

• Perform a risk assessment for extubation

• Increase sedation

• Increase ventilator support