Which of the following could cause hypercapnic respiratory failure? 1. Smoke inhalation 2. Opiate ...

Which of the following could cause hypercapnic respiratory failure? 1. Smoke inhalation 2. Opiate drug overdose 3. Chronic obstructive pulmonary disease 4. Hypothyroidism
 
  a. 1 and 3 only
  b. 1, 2, and 3 only
  c. 3 and 4 only
  d. 2, 3, and 4 only

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Q. 2  Which of the following are associated with hypercapnic respiratory failure due to decreased ven-tilatory drive? 1. Brainstem lesions 2. Encephalitis 3. Hypothyroidism 4. Asthma
 
  a. 1, 2, and 3 only
  b. 2 and 4 only
  c. 3 and 4 only
  d. 2, 3, and 4 only

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Q. 3  A patient with an opiate drug overdose is unconscious and exhibits the following blood gas re-sults breathing room air: pH = 7.19; PCO2 = 89; HCO3 = 27; PO2 = 48. Which of the following best describes this patient's condition?
 
  a. Chronic hypoxemic respiratory failure
  b. Chronic hypercapnic respiratory failure
  c. Acute hypoxemic respiratory failure
  d. Acute hypercapnic respiratory failure

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Q. 4  What is the most common cause of low mixed venous oxygen?
 
  a. Liver disease
  b. Cardiac disease
  c. Neuromuscular disease
  d. Vascular disease