The nurse auscultates an opening snap after the second heart sound when the stethoscope is placed to the left of the lower sternum. Which additional heart sound does the nurse expect to hear?

A 10-year-old patient in the pediatrician’s office has dropped from 65 pounds to 55 pounds since last seen in the office three months ago. The patient’s mother tells the nurse, “I just don’t understand how that’s possible. She eats constantly and is always thirsty. My other concern is that she has to urinate frequently; her teacher contacts me weekly to tell me she goes to the bathroom more than her peers.” The nurse anticipates this patient will be diagnosed with which condition?

The patient with a chest tube on suction becomes delirious and climbs out of bed causing the chest tube to become dislodged. Which of the following actions should the nurse take first?