Invasive and Sterile Procedures

types of invasive procedures

• thoracentesis

• paracentesis

• organ biopsies

• mass biopsies

• abscess drainages

2 types of biopsies

• free hand technique

• under ultrasound guidance

fine needle aspiration (FNA)

uses a thin needle and a syringe

core biopsy

uses a much larger diameter needle to obtain a substantial tissue sample

example of FNA

thyroid biopsy

example of core biopsy

liver biopsy

10 vital rules of surgical asepsis

1. always know which area and items are sterile and which are not

2. if the sterility of an object is questionable, it is considered nonsterile

3. if you recognize that item has become nonsterile, act immediately

4. a sterile field must never be left unmonitored. if a sterile field is left unattended, it is considered nonsterile

5. a sterile person does not lean across a sterile field

6. a sterile field ends at the level of the tabletop

7. cuffs of a sterile gown are not considered sterile

8. the edges of a sterile wrapper are not considered sterile

9. if one sterile person must pass another, they must pass back-to-back

10. coughing, sneezing, or excessive talking over a sterile field leads to contamination