Suturing

Question 1

Needle holders

Answer 1

Mayo hegaer
Olsen hegaer
Gillies

Question 2

Forceps

Answer 2

Serrated
Rat tooth

Question 3

Scissors

Answer 3

Mayo

Question 4

Taper cut needle

Answer 4

Sharp point but creates small hole
Used in gut and bladder

Question 5

Reverse cutting

Answer 5

Strong
Used for skin, fascia

Question 6

Round bodied

Answer 6

Quite blunt
Used for fat

Question 7

What properties do we require a suture material to have

Answer 7

Strong
Uniform size and diameter
Easy to handle
Good knot holding
Not reactive
Sterile
Cost effective

Question 8

Suture material properties

Answer 8

Memory
Handling
Tensile strength
Duration

Question 9

Monofilament

Answer 9

Made of a single strand
Causes less resistance- tissue drag
Less likely to harbour bacteria

Question 10

Multifilament

Answer 10

Made of several filament that are twisted- catgut or braided- polyglactin 910 together
Easier to handle but higher friction
Can have capillary action and can wick bacteria

Question 11

Non absorbable

Answer 11

Does not dissolve therefore long lasting
Used when sutures will be removed or long standing support needed from them

Question 12

Examples of non absorbable material

Answer 12

Nylon
Polypropylene

Question 13

Absorbable

Answer 13

Provide support while wound is healing and are absorbed once the wound has sufficient strength
Different material break down at different rates

Question 14

Absorbable examples

Answer 14

Polydioxone
Polyglicaprone
Polyglactin 910
Catgut

Question 15

Polyglactin 910 features

Answer 15

Vicryl
Multifilament
Easy to handle
Strength reduced to 50 percent at 21 days
Very popular

Question 16

Poliglecaprone 25

Answer 16

Monocryl
Monofilament
Strength reduced to 50 percent at 7 days
Easy to handle
Used for sub cut tissue, intradermal sutures, bladder and intestine

Question 17

Polydioxanone

Answer 17

PDS
Monofilament
Long duration- 50% strength loss at 5-6weeks
Has a lot of memory
Knot security is poorer
Useful when longer support is needed- Linea alba, muscle, intestine

Question 18

Catgut

Answer 18

Multifilament
Derived from sheep or cattle intestine
Sometimes treated with chromium salts
Intense tissue reaction
Used for ligastures
Unpredictable absorption

Question 19

Natural materials

Answer 19

Absorbed by phagocytosis and proteolysis which varies- inflammatory reactions

Question 20

Synthetic material

Answer 20

Chemical polymers which are absorbed by hydrolysis

Question 21

What are the features of an ideal suture

Answer 21

Synthetic
Monofilament
Low memory
Good knot security

Question 22

Smaller diameter suture is

Answer 22

Poorer knot security

Question 23

Throw is

Answer 23

Basic unit of knot

Question 24

Surgeons knot

Answer 24

Double throw followed by a single throw
Commonly used knot
Secure