The nurse plans care for a client with gastroesophageal reflux disease (GERD) who had open anti-reflux surgery. Which nursing intervention would be essential to include in the care of this client?
A. Educated client on foods to avoid
B. Assess pain level and administer analgesics as needed
C. Measure intake and output every shift.
D. Coughing and deep breathing every 2 hours while awake.