After the cardiac catheterization, Greg appears drowsy and has a pressure dressing on his right groin area. The most important nursing responsibility associated with the postprocedural care of Greg would be the detection of complications. Identify the rationale(s) for each of the following nursing interventions or observations.
a. Taking frequent vital signs
b. Monitoring blood pressure, especially for hypotension
c. Assessing pulses distal to the catheterization site
d. Assessing the temperature and color of the affected extremity