Table 1.

Broad-spectrum and narrow-spectrum grouping of antimicrobials

Groups	Category or name
Narrow-spectrum antimicrobials	First-generation cephalosporin
	Second-generation cephalosporin
	Third-generation cephalosporin
	Cefmetazole
	Penicillin
	Penicillin + β-lactamase inhibitor
	Macrolides
	Tetracyclines
	Folate pathway inhibitor
	Nitroimidazoles
	Lincosamide
	Ansamycin
Broad-spectrum antimicrobials	Fourth-generation cephalosporin
	Antipseudomonal penicillin
	Antipseudomonal penicillin + β-lactamase inhibitor
	Carbapenem
	Fluoroquinolone
	Aminoglycoside
	Glycopeptide
	Lipopeptides
	Oxazolidinones