If the standard deviation of a set of scores is equal to 2, the variance of that set of score is equal to 4.

James’ true weight is a 100 pounds. The scale at the clinic indicates that he weighs 110 pounds. The absolute error in measurement is equal to 5 pounds.

The nurse provides discharge teaching for a patient who has two fractured ribs from an automobile accident. Which statement, if made by the patient, would indicate that teaching has been effective?

James’ true weight is a 100 pounds. The scale at the clinic indicates that he weighs 110 pounds. The relative error in measurement is equal to 10%.

The nurse monitors a patient in the emergency department after chest tube placement for a hemopneumothorax. The nurse is most concerned if which assessment finding is observed?

During change-of-shift report on a medical unit, the nurse learns that a patient with aspiration pneumonia who was admitted with respiratory distress has become increasingly agitated. Which action should the nurse take first?

A patient with acute pancreatitis is NPO and has a nasogastric (NG) tube to suction. Which information obtained by the nurse indicates that these therapies have been effective?

A patient with cirrhosis and esophageal varices has a new prescription for propranolol (Inderal). Which finding is the best indicator to the nurse that the medication has been effective?

A patient with a pleural effusion is scheduled for a thoracentesis. Which action should the nurse take to prepare the patient for the procedure?

After the nurse gives IV atropine to a patient with symptomatic type 1, second-degree atrioventricular (AV) block, which finding indicates that the drug has been effective?