| A | B |
|---|
| Suture | strand used to sew tissue together |
| ligature | strand used to tie off vessels / tissue |
| Pare | rediscovered ligatures |
| 3 characteristics of suture | physical, handling, tissue-reaction |
| Physical configuration | mono or multifilament |
| capilarity | wicking |
| diameter | 12-0 to 7 |
| 12-0 | very small size of suture |
| 7 | very large size of suture |
| tensile strength | force to break suture |
| knot strength | force to make knot slip |
| elasticity | able to return to size after stretching |
| memory | need to go back to original shape |
| Handling characteristics | pliability and friction |
| coating | reduces friction |
| coefficient of friction | amount of drag through tissue |
| pliability | how easily it bends |
| tissue reaction characteristics | inflammation |
| inflammatory response of suture | encapsulation or absorption |
| Natural absorbable suture | digested by enzymes |
| Synthetic absorbable suture | hydrolyzed by water |
| natural absorbable suture type | plain or chromic |
| Plain suture | absorbed quickly |
| Chromic suture | absorbed more slowly |
| Chromic may be used | with infection present |
| Natural non-absorbable | resists enzymatic digestion |
| Synthetic absorbable | always has expiration date |
| Suture types can be identified by | Color of packages / boxes |
| Product number | ID's suture, size, needle |
| Suture Selection depends on | tissue, vacularity, pt. condition |
| Suture selection also depends on | surgeon's preference, procedural standards |
| Specifications for suture | Sterile, tensile / knot strength, size |
| Hemostasis can occur with | suture, ESU, lasers, chemicals |
| Goal for hemostasis | stop all active bleeding before wound closure |
| importance of hemostasis | less blood loss, better visability |
| purpose of ligation | hemostasis, tie off structure, prevent leakage |
| Types of ligation | Reel, free tie, ligating clips |
| Tie on passer | free tie on Schnidt |
| Stick tie | needle/suture on needle holder |
