Lecture 7: surgical procedures Flashcards
Asepsis + technique
absence of pathogens
Aseptic technique: procedures to prevent contamination with pathogens
Antiseptic + technique
A substance that stops/slows down the growth of MOs. Applied to the body
Antiseptis: practice of using antiseptics to reduce risk of infection.
Sterilisation
Elimination of all forms of life and other biological agents
Sterile technique: procedures to make equipment and areas free from all MOs and to main that sterility
Disinfectant
A substance that stops/slows down the growth of MOs. Applied to non-living surfaces
low - high bleeding tissue
Connective tissue
Epithelial tissue
Nervous tissue
Muscle tissue
haemostatic techniques
- Direct pressure: difficult in nervous tissue
- Cautery: burning, although causes some local damage
- Haemostatic products
- Ligation
Biotelemtry
o Implant sensors in abdominal cavity
o Heart rate, blood pressure, temperature, ECG
o More stable measurement compared ton single repeated measurements
o No stress involved during measurements
o Long-term measurements in freely moving animal
Different types of thread
o Absorbable: used in long-term experiments, absorption starts after +- 2 weeks. Vicryl, dexon
o Non-absorbable: used in short term experiments, or when the thread can be removed manually. Silk, nylon, stainless steel.
o Monofil: made by 1 fibre
o Polyfil: made by several fibres
Needles: points + thread
types of points:
- triangular
- round
-trocar
Traumatic (eye, guide thread through it, so separate)
Atraumatic (attached thread)
Suture techniques
- Interrupted stitch: bit more secure than continuous stitch. More difficult to control pressure along the suture.
- Continuous stitch: relatively easy + quick to do, but if it becomes undone wound open. Easy to control pressure along the suture.
- U-stitch eversion: under skin
- U-stitch inversion: , above skin pressure is more on the top
Types of knots
- slip knot: DONT USE
- square knot
- surgeons knot
