The nurse is assigned to a patient who is suffering from acute pericarditis. The patient suddenly becomes hypotensive with signs of peripheral vascular insufficiency. On exam, the patient has significant jugular venous distention and muffled heart sounds. Which statement best describes the pathophysiology of this patient’s condition?

The hospitalized patient is found unresponsive and the cardiopulmonary monitor shows ventricular fibrillation. Upon assessment, no pulse or respiratory effort are appreciated. A code blue is called and the defibrillator is being brought to the room. Which initial intervention is appropriate?

During hourly rounding assessment of the patient with a chest tube for treatment of a pneumothorax, the nurse notes the patient’s chest and neck are markedly more edematous than on previous assessment. Upon palpation, crepitus is noted. Which action does the nurse take first?