perio 4c

Question 1

Haemostasis
Internal Pressure

Answer 1

Digital (finger)
- Packs/Patties
- Bone Wax (bone oozes considerably)

Question 2

Chemical Haemostasis

Answer 2

-Gelfoam™-
-Floseal™
-Surgicel™-

Question 3

Gelfoam™

Answer 3

• Absorbable gelatin (porcine) → soaks up blood
  thereby absorbing fibrin and forming clot

Question 4

Floseal™

Answer 4

• Liquid gelatin and thrombin mixture→ applied over
  bleeding area absorbing fibrin and forming clot

Question 5

Surgicel™

Answer 5

Oxidized regenerated cellulose → clot forms on
contact with blood and material swells to form haemostatic gel

Question 6

Hot Thermal Haemostasis

Answer 6

• Diathermy
• Ligasure

Question 7

Diathermy

Answer 7

(electrosurgery - cut/coag)

Question 8

Ligasure (seals vessel)

Answer 8

seals vessel)

Question 9

Haemostasis other

Answer 9

Harmonic Scalpel (ultrasonic)

Question 10

Principles of Electrosurgery

Answer 10

Bipolar

Monopolar

Question 11

Bipolar

Answer 11

• Circuit complete at tip of forceps
• Current only flows through tissue between forceps
• Precise (i.e. neuro surgery)

Question 12

Monopolar

Answer 12

• Requires return electrode to complete circuit (diathermy
  plate/REM)
• Place on area of shaved skin with large muscle mass to disperse
  current

Answer 14

• Do not place over bony prominences
• Never cut plate to size
• Do not place where fluid can seep under plate
• Placed as close to operative site as possible
• Placed after the patient is positioned to prevent creasing and
  lifting of plate
• Not over site of metal implant (hip, knee replacement) as current
  can disperse to implant and generate intense heat
• Do not use damaged plate
• Document plate site and skin condition on plate removal