Flashcards in Hemostasis Deck (15):
What are the two types if bleeding?
Arterial - gross bleeding from transected or penetrated vessel
Venous - diffuse oozing from denuded or cut surfaces
Complete hemostasis is essential to _____________.
Bleeding needs to stop
What is a hematoma?
Collection of extravasated blood in body cavity, space, or tissue caused by uncontrolled bleeding or oozing.
How is hemostasis achieved?
What are some chemical methods of hemostasis?
Absorbable gel foam or collagen
Phenol and alcohol
What are some methods of external mechanical hemostasis?
Sequential compression devices
What are some methods of internal mechanical hemostasis?
Pledgets (mini squares)
What are some methods of cold thermal hemostasis?
Cryosurgery - freeze target areas with e.g Liquid nitrogen. Nose cancer of cervix, eyes.
- local: ice pack to cool area down
- systemic: cool whole person down
What are some methods of hot thermal hemostasis?
Ultrasonic scalpel (harmonic)
What is electrocautery?
Small loop heated by a steady, direct electric current to red heat which will coagulate and destroy tissue on contact.
What is electrosurgery?
High frequency electric current from electrosurgical unit used to cut or coagulate tissue
Pt must be grounded and safety precautions taken.
What is an ultrasonic scalpel?
Aka the harmonic scalpel
Titanium blade moved by rapid ultrasonic motion that cuts and coagulates tissue simultaneously.
When might the laser be used?
For stones or genital warts. Can cut, coagulate, and or vaporize tissue
When is photo coagulation used?