A 36-year-old man is on the 5^th

day of hospitalization after

abdominal surgery for Crohn’s disease. The patient has a right femoral central

venous catheter for parenteral nutrition which was placed right before surgery.

The patient develops high fever with chills and rigors. Blood cultures taken

both through the central venous catheter and a peripheral vein reveal Gram-positive

cocci that are coagulase-positive and catalase-positive.

Which is the causative infectious agent and resistance phenotype of most

importance in this case?