If a refrigerant cylinder weighs 100 lb and its tare weight is 20 lb, how much refrigerant was removed if the final weight is 50 lb after charging a system? 

Recovery/recycling machines must be certified to comply with AHRI Standard _____. 

Which of the following best describes the treatment for prodromal phase of roseola?

The mother of a 10-month-old infant is concerned because her child was exposed to an unvaccinated cousin who contracted measles (rubeola) when traveling abroad. Which signs and symptoms should the provider expect to see that would indicate the baby had a measles infection?

A 3-year-old presents with a one day history of fever of 100.2, cough, and increased nasal congestion. She is drinking and voiding well. Her lungs are clear and oxygen saturation is measured at 98%. Which is the best course of action to care for this child?

The nurse practitioner is assessing a 3-year-old child who has been coughing continuously for 2 hours. The caregiver states she gave the child an albuterol treatment with a sibling’s medication and it did not help. The child has been previously healthy, appears to be in mild distress, and is afebrile. Upon auscultation, the nurse practitioner hears expiratory wheezing over the left side of the chest only. What is the most likely diagnosis?

When a patient is performing pursed lip breathing, what does this maneuver do for the patient?I.Lengthens their expiratory timeII. Increases inspiratory timeIII. Holds their airway openIV. Increases their respiratory rate

Total oxygen content (CaO2) should be assessed in the presence of:I. Gun shot wound (GSW)II. Post-operativeIII. EmphysemaIV. Hemothorax

A pulmonary emboli would cause what physiologic condition?I. An increase in cardiac outputII. HypoxemiaIII. Sudden onset of dyspneaIV. Decrease in venous return

After a pharmaceutical company’s patent on a drug expires so that many generic drug companies can produce the same drug, the price of the drug will ____ and the quantity will ____.