Knot Info & Misc for Practical

Question 1

Name 4 appositional suture patterns

Answer 1

Simple interrupted
Vertical mattress
Cruciate (cross) mattress
simple continuous

Question 2

Name 4 inverting suture patterns

Answer 2

Lembert
Halsted
Cushing
Connell

Question 3

Name the 1 everting suture pattern

Answer 3

horizontal mattress

Question 4

Two advantages and 1 disadvantage of an interrupted pattern?

Answer 4

Allows more precise tissue apposition
failure of 1 suture doesn’t mean failure of the entire suture line

Con: time consuming

Question 5

When comparing “mattress” sutures:

1) which one has ischemic potential if tied under tension
2) which can be safely placed under tension

Answer 5

1) horizontal (ischemic potential)

2) vertical mattress (safe under tension)

Question 6

Inverted patterns are for ____ only

Answer 6

Viscera

don’t use on skin

Question 7

2 advantages and 2 disadvantages of continuous patterns

Answer 7

Good:

1) only 2 knots (beginning and ending)
2) more efficient

Bad:

1) less exact control of wound edges
2) potential for entire suture line to fail (catastrophic failure)

Question 8

Purse-string pattern is used to?

Answer 8

temporarily close a lumen

Question 9

Most ends are cut to what length?

What is the exception?

Answer 9

Most are cut to 3mm

Cut surgical gut to 6mm

Question 10

When tying apply ______, _______, _______ tension

Answer 10

equal, opposite, horizontal

Question 11

Increasing suture size by 2 sizes increases knot volume by how much? How much does reactivity change?

Answer 11

4-6 fold increase in knot volume

2 fold increase in reactivity

Question 12

Name 4 uses (procedures) for surgical staplers

Answer 12

skin apposition
vessel ligation
tissue resection
gastrointestinal anastomosis

Question 13

When comparing scissor conformation:

1) curved offer greater _____ & _____
2) straight offers greater _____ _______

Answer 13

1) greater maneuverability and visibility

2) greater mechanical advantage (when cutting dense tissue)