1. Unit 1: Bacteria & Antibiotics

2. (1) Bacteria vs. viruses Bacteria are living, single-celled organisms.
Viruses are non-living structures.
Both can cause infection.

4. (2) Problems w/addie Misdiagnosed Addie with Pneumonia.
Gave Addie antibiotics for a “cold” she did not have.
Contracted a 2nd type of resistant bacteria from ECMO tubes.

6. (3) “Resistant” & “Antibiotics”
Antibiotics = Medicine used to kill bacteria.
Antibiotics can ONLY be used on BACTERIA.
Some bacteria are “Resistant” to some antibiotics.
Resistant = The Bacteria cannot be killed by the antibiotics.

8. (4) Types of Antibiotics:
Beta-Lactam  Kill bacteria by preventing them from being able to make their cell wall, causing them to explode.
Macrolides  Kill bacteria by preventing their ribosomes from producing proteins, stopping all life processes.
Quinolones  Kill bacteria by breaking apart the cell’s DNA, stopping all life processes.

10. (5) MRSA
The type of “resistant” bacterial infection Addie had was called “MRSA”.
MRSA = Methicillin Resistant Bacteria
Methicillin = Strong type of antibiotics
Often enters through a cut/injury, and quickly shows signs of swelling, redness, flu-like symptoms and boils.

11. (6) Where is MRSA? Everywhere / Anywhere
Originated in Hospitals, then spread to the Community
More common on cloth surfaces, warm and moist areas, high-traffic surfaces and areas.
Not as common on smooth and solid surfaces, cold and dry areas, areas rarely visited or used.

12. (7) Growing Bacteria
We can grow bacteria on a gel-like substance called “Agar”.
Agar contains the nutrients/food and water bacteria need to stay alive and grow.
We contain the bacteria inside a “Petri Dish”.