Final answer:
Streptococcus pyogenes and Staphylococcus aureus are highly virulent microorganisms that can result in cardiac and vascular tissue discard.
Step-by-step explanation:
Pathogens that result in cardiac and vascular tissue discard include Streptococcus Pyogenes and Staphylococcus Aureus, which are highly virulent microorganisms. Streptococcus Pyogenes can cause a range of diseases such as strep throat, scarlet fever, and pneumonia, while Staphylococcus Aureus can cause various infections that are highly resistant to antibiotics. Other microorganisms such as Clostridium, Gram Negative Bacilli, and Enterococcus Sp are also potential pathogens, but they may not specifically result in cardiac and vascular tissue discard.