18 Flashcards
6 Halstead principles
- gentle tissue handling2. hemostasis3. aseptic technique4. preserve blood supply5. eliminate dead space6. Appose tissues with minimal tension
grips for scalpel handling
pencil–accurate for short, delicate maneuversfingertip–max length with greatest accuracy, stability
four motions of cutting with scapel blade
- slide–precise depth, length and control2. press–stab incisions3. sawing–continuation and cut without removal/reinsertion of blade4. scraping–separate tissue layers
three forces used when cutting with scissors
- close2. shear3. torque
grip used with scissors
tri-pod
T/FCutting tissue with the portion of the blade near the fulcrum results in greater crushing injury
TRUEUSE TIPS FOR LESS CLOSING FORCE AND MORE SECURE STABILITY OF TISSUE
needle hold names for those that cut and don’t cut
Mayo-Hegar—don’t cutOlsen Hegar–cut
suture tage recommendations for synthetic material v gut
suture tagessynthetic: 3 mmGut: 6 mm
four grips for manipulating a needle holder
- tri-pod (thumb-ring)2. thenar3. palmed 4. pencil (castro veijos)
strongest grip in a ringed instrument
palmed–provides the greatest needle pressure and control in dense tissue and provides maximum wrist rotation
3 types of forceps
- crushing–Allis, Babcock, Kocher2. noncrushing–Doyen, Statinsky3. hemostatic–Halstead, Kelly, Crile, Carmalts
list non penetrating instruments
- lorna2. ednas3. allis
types of self retainer retractors
BalfourWeitlanerGelpiFinochiettoLonestar ring retractor
list hand held retractors
Sennarmy-navyGreenSpay hookvolkmannmalleable
types of suction tips
poolefrasieryankauer
the blood supply in the wound edge is inversely proportional to what…
the blood supply in the wound edge is inversely proportional to the wound closure tension
benefits of a continuous pattern suture
quickerdistributes tension evenly along entire length of wound
inverting continuous patterns
connell (into lumen)cushinglembert
T/Fpurse string sutures are inverting
TRUE
5 principles of knot tying
- simplest secure knot for suture used to minimize knot volume2. avoid friction3. use appropriate tension4. pull suture ends in opposite direction, horizontal and with even tension5. never grasp suture with needle holders
where is the weakest point in a suture line or ligature
practically always the knot
synthetic absorbable relative knot security %
67%
