An E size cylinder is turned on, and the flowmeter is off. Which of the following is (are) the most likely cause(s) of a hissing sound?I. A cracked flowmeterII. Inadequate pressure in the cylinderIII. An obstruction at the regulator outletIV. A leak in the connection between the yoke and the cylinder opening                                                                                                                    14:m1:o8 

According to the American Association for Respiratory Care (AARC) Clinical Practice Guideline (2002 Revision & Update), which of the following are considered precautions or complications of oxygen therapy?1. A PaO2 >60 mm Hg in spontaneously breathing patients with chronic PaCO2 levels2. With FIO2 >0.50 and the risk of oxygen toxicity or absorption atelectasis occurring3. During laser bronchoscopy and high levels of oxygen4. Acute myocardial infarction

Which of the following statements is true concerning vibrating mesh nebulizers?

Factors that increase the risk of atelectasis include:

The device that will prevent early airway closure is:

A patient has undergone surgery and is receiving continuous supplemental oxygen via a 30% air-entrainment mask. He or she becomes pale and short of breath during incentive spirometry. Pulse oximetry reveals a significant drop in oxygen saturation during incentive spirometry. The respiratory therapist should do which of the following for subsequent incentive spirometry therapy?

An assessment of a patient with newly diagnosed chronic bronchitis reveals an alert, cooperative, and oriented patient. Low-pitched wheezes are heard bilaterally on auscultation. The patient has a productive cough, producing copious amounts of sputum; no fever; a pulse of 85 beats/min; respirations of 18 breaths/min; and blood pressure of 145/90. The most appropriate lung expansion therapy for this patient is which of the following?

Indications for the use of warm, humidified gas are which of the following?1. Patients with hypothermia2. Patients with croup3. Patients with bronchospasm4. Patients with postextubation edema

What type of station outlet is seen in the picture?

A patient has a heated air-entrainment large-volume jet nebulizer. The aerosol disappears completely during each inspiration. The most-appropriate action to take is to: