Exam 4: Establishing the Need for Mechanical Ventilation

The disorders that cause respiratory failure due to increased work of breathing include which of the following? 1)Myasthenia gravis 2)Cardiogenic pulmonary edema 3)Interstitial pulmonary fibrosis 4)Amyotrophic lateral sclerosis

A 14-year-old boy who had previously been diagnosed with mild persistent asthma has a PEFR of 100 L/min.This indicates which of the following?

The respiratory assessment of a 44-year-old female patient diagnosed with myasthenia gravis shows: vital capacity 475 mL,maximum inspiratory pressure (MIP)-18 cm H₂O.The patient is 5 feet 6 inches tall and weighs 188 lb.The most recent ABG on a 2 L/min nasal cannula is pH 7.32,P_aCO₂ 49 mm Hg,P_aO₂ 77 mm Hg,S_aO₂ 95%,HCO₃⁻ 24 mEq/L.The most appropriate recommendation for this patient is which of the following?

Hypercapnic respiratory failure due to increased work of breathing will be caused by which of the following?

A 64-year-old female patient having an acute exacerbation of chronic obstructive pulmonary disease (COPD)was admitted to the hospital yesterday.During rounds today the respiratory therapist finds the patient to be difficult to arouse and has the following physical findings: heart rate 102 beats/min,respiratory rate 23 breaths/min shallow and slightly labored,breath sounds are bilaterally decreased with rhonchi in both bases.The patient has a frequent butweak cough. The respiratory therapist draws an ABG with the following results on a 2 L/min nasal cannula: pH 7.52, P_aCO₂ 30 mm Hg, P_aO₂ 45 mm Hg, S_aO₂ 86%, HCO₃^- 24 m Eq/L. The most appropriate action is which of the following?

Which of the following values are indicative of acute respiratory failure and the need for ventilatory support? 1)Maximum inspiratory pressure (MIP)= −38 cm H₂O. 2)Vital capacity (VC)= 650 mL for a 70 kg male. 3)Alveolar-to-arterial partial pressure of oxygen [P₍ᴀ₋ₐ₎O₂] = 150 on 100% oxygen. 4)Maximum expiratory pressure (MEP)= 25 cm H₂O.

Which of the following values are indicative of acute respiratory failure and the need for ventilatory support? 1)Maximum inspiratory pressure (MIP)= −25 cm H₂O 2)Dead space to tidal volume ratio (VD/Vᴛ)= 0.4 3)Vital capacity (VC)= 8 mL/kg IBW 4)pH = 7.20