Applied Respiratory Physiology — MCQs

Which of the following factors does not directly influence oxygen delivery to tissues?

What does zero pressure indicate in the pressure-volume curve?

In acute respiratory distress syndrome (ARDS), which type of cell is primarily damaged?

Patient of pneumonia on ventilator with wt. 50 kg. RR 14/min, bicarbonate - 18, pH 7.3, pCO2 48 mmHg, pO2 110 mmHg, PEEP 12 cm H2O, tidal volume 420 mL, SpO2 - 100% with FiO2 90%. What is next step in management?

Which of the following laboratory findings most directly indicates tissue hypoxia in a patient with chronic obstructive pulmonary disease (COPD)?

In an emphysematous patient with bullous lesions, which is the best investigation to measure lung volumes?

Which of the following conditions are contraindications for noninvasive positive-pressure ventilation in patients with respiratory failure? I. Craniofacial abnormalities II. Significant burns III. Respiratory failure with PaCO_2 of 60 mm Hg IV. Cardiovascular instability Select the correct answer using the code given below :

Which of the following parameters is most critical for maintaining optimal oxygenation?

What is the primary use of dexmedetomidine?

Which of the following circumstances trigger conversion from non-invasive to invasive ventilation?