Surgical Sutures: Types, Properties, and Techniques for Medical Students

Question 1

Which suture material is known for its high tensile strength and low tissue reactivity?

Accepted Answer

Polypropylene

Answer

Silk

Answer

Catgut

Question 2

Which of the following is not an **absorbable** suture type?

Accepted Answer

Monofilament nylon

Answer

Plain gut

Answer

Chromic gut

Answer

Polyglactin 910

Question 3

Which suture material is known for its high **tensile strength** and **low tissue reactivity**?

Accepted Answer

Polypropylene

Answer

Silk

Answer

Cotton

Answer

Polyester

Question 4

Which surgical knot is commonly used to secure a ligature around a blood vessel?

Accepted Answer

Surgeon's knot

Answer

Square knot

Answer

Bowline knot

Answer

Clove hitch

Question 5

When teaching a junior surgeon about suture techniques, which of the following is the most important factor to emphasize?

Accepted Answer

Safety

Answer

Speed

Answer

Precision

Answer

Cost-effectiveness

Question 6

The primary purpose of using a tie to secure a surgical knot is to:

Accepted Answer

Prevent the knot from loosening

Answer

Increase the strength of the knot

Answer

Facilitate knot placement

Answer

Minimize tissue trauma

Question 7

Which factor is NOT relevant when considering the selection of a suture material?

Accepted Answer

Patient weight

Answer

Tensile strength

Answer

Tissue reactivity

Answer

Cost

Question 8

The fundamental difference between a monofilament and a multifilament suture lies in their:

Accepted Answer

Number of strands

Answer

Flexibility

Answer

Infection resistance

Answer

Strength

Question 9

In general, which type of suture material is most commonly selected for skin closure?

Accepted Answer

Silk

Answer

Nylon

Answer

Poliglecaprone 25

Answer

Polydioxanone

Question 10

The main advantage of non-absorbable sutures is:

Accepted Answer

Increased tensile strength

Answer

Faster healing time

Answer

Reduced risk of infection

Answer

No need for suture removal

Question 11

The purpose of using a cutting needle is to:

Accepted Answer

Cut through dense tissue

Answer

Pass through delicate tissue without tearing

Answer

Prevent suture breakage

Answer

Reduce scarring

Question 12

Which suture pattern is most effective in distributing tension evenly?

Accepted Answer

Horizontal mattress

Answer

Simple interrupted

Answer

Continuous running

Answer

Figure-of-eight

Question 13

In selecting the optimal suture material for a surgical procedure, which principle is paramount?

Accepted Answer

Characteristics of the wound and surrounding tissues

Answer

Availability of the suture material

Answer

Surgeon's personal preference

Answer

Cost of the suture material

Question 14

Which of the following is a potential consequence of improper suture handling?

Accepted Answer

Delayed wound healing

Answer

Improved wound appearance

Answer

Reduced risk of infection

Answer

Faster wound closure

Question 15

Which of the following statements accurately describes a key characteristic of monofilament surgical sutures?

Accepted Answer

High tensile strength and minimal tissue drag

Answer

Prone to harboring bacteria due to their smooth surface

Answer

Designed for extended retention time within the tissue

Question 16

Which of the following is an absorbable suture material?

Accepted Answer

Polyglactin 910

Answer

Silk

Answer

Nylon

Answer

Polypropylene

Question 17

Which type of suture is most suitable for suturing deep structures?

Accepted Answer

Monofilament

Answer

Braided

Answer

Twisted

Answer

Multifilament

Question 18

What characteristic distinguishes absorbable sutures from non-absorbable sutures?

Accepted Answer

Degradation over time

Answer

Exceptional tensile strength

Answer

Compatibility with biological tissues

Answer

Minimal resistance during handling

Question 19

Which of the following is NOT a type of suture material used in surgical procedures?

Accepted Answer

Carbon Steel

Answer

Silk

Answer

Nylon

Answer

Polyethylene terephthalate (PET)

Question 20

For a wound with minimal skin edge tension, which suturing technique is most appropriate?

Accepted Answer

Simple interrupted suture

Answer

Continuous suture

Answer

Subcuticular suture

Answer

褥瘡 closure

Question 21

When selecting suture material for a surgical procedure, which factor is most crucial?

Accepted Answer

Tissue compatibility

Answer

Tensile strength

Answer

Cost

Answer

Sterility

Question 22

What is a key advantage of using absorbable sutures?

Accepted Answer

They degrade over time, eliminating the need for suture removal.

Answer

They reduce the risk of infection at the wound site.

Answer

They provide higher tensile strength compared to non-absorbable sutures.

Question 23

Which suture technique involves passing the needle through both edges of the tissue with each throw, creating individual knots?

Accepted Answer

Simple interrupted suture

Answer

Running suture

Answer

Horizontal mattress suture

Answer

Continuous suture

Question 24

When is a buried suture typically employed in surgical procedures?

Accepted Answer

To approximate deep tissues without leaving visible suture marks on the skin surface.

Answer

To secure skin incisions and prevent wound gaping.

Answer

To secure drains or catheters in place.

Question 25

Which of the following factors is generally NOT considered when selecting the most appropriate suture material for a given surgical procedure?

Accepted Answer

Patient's age

Answer

Tissue type and location of the wound

Answer

Risk of infection

Question 26

What is the primary function of a knot in surgical suturing?

Accepted Answer

To secure the suture and prevent it from loosening or slipping.

Answer

To facilitate tissue approximation and wound closure.

Answer

To create a hemostatic effect and control bleeding.

Question 27

Which type of suture material is characterized by its braided structure and increased flexibility?

Accepted Answer

Silk

Answer

Polyglactin 910 (Vicryl)

Answer

Nylon

Answer

Polydioxanone (PDS)

Question 28

When suturing delicate tissues, it is generally recommended to use a suture needle of what size or smaller?

Accepted Answer

3-0 or smaller

Answer

4 or 5

Answer

2 or 3

Answer

0 or 1

Question 29

Which of the following is a defining characteristic of absorbable sutures?

Accepted Answer

They are gradually broken down and absorbed by the body over time.

Answer

They cause minimal scarring.

Answer

They are non-reactive to body tissues.

Answer

They provide permanent support.

Question 30

What is the primary purpose of a subcutaneous suture?

Accepted Answer

To close the subcutaneous layer of tissue, providing support and reducing dead space.

Answer

To provide tension relief

Answer

To attach surgical drains

Answer

To prevent skin inversion

Question 31

Which of the following is a characteristic of non-absorbable suture materials?

Accepted Answer

They remain intact and do not break down within the body.

Answer

Vicryl

Answer

Polyglactin 910

Answer

PDS II

Question 32

What is considered the ideal suture tension for approximating skin edges?

Accepted Answer

Just enough to close the wound edges without causing excessive pressure or distortion.

Answer

As tight as possible to prevent wound separation

Answer

Variable depending on the wound location

Answer

Loose enough to allow for tissue swelling

Question 33

What is the primary function of a suture needle?

Accepted Answer

To facilitate passing the suture through tissue

Answer

To cut the suture

Answer

To tie the suture

Answer

To hold the suture in place

Question 34

Which suture characteristic is NOT ideal?

Accepted Answer

Weak tensile strength

Answer

Biocompatibility

Answer

Resistance to infection

Answer

Easy handling

Question 35

What suturing technique involves varying suture sizes for tissue layers?

Accepted Answer

Layered closure

Answer

Atraumatic suturing

Answer

Knotless suturing

Question 36

Which suture pattern is continuous and used to approximate skin edges?

Accepted Answer

Running suture

Answer

Vertical mattress suture

Answer

Interrupted suture

Answer

Continuous locking suture

Question 37

What is the purpose of a suture ligature?

Accepted Answer

Creating a loop for tying or securing sutures

Answer

Suturing blood vessels

Answer

Providing suture material

Answer

Removing sutures

Question 38

Which suture removal method involves cutting and removing each suture separately?

Accepted Answer

Sharp dissection

Answer

Blunt dissection

Answer

Knot-tying

Question 39

Which suture type is MOST appropriate for closing the fascia during a laparotomy?

Accepted Answer

Polydioxanone (PDS)

Answer

Glycol

Answer

Chromic gut

Answer

Silk

Question 40

When suturing a superficial laceration on the face, which suture characteristic is MOST important for optimal cosmetic outcome?

Accepted Answer

Fine gauge

Answer

High tensile strength

Answer

Knot security

Answer

Rapid absorption rate

Question 41

Which suture material is classified as non-absorbable and is commonly used for vascular anastomoses?

Accepted Answer

Polypropylene (Prolene)

Answer

Chromic gut

Answer

Polyglycolic acid (Dexon)

Answer

Poliglecaprone 25 (Monocryl)

Question 42

What is the primary advantage of using a continuous suture technique compared to interrupted sutures?

Accepted Answer

Faster closure time

Answer

Lower risk of infection

Answer

Increased wound strength

Answer

Improved cosmetic outcome

Question 43

Which of the following is a CONTRAINDICATION for using absorbable sutures?

Accepted Answer

Contaminated wounds with high infection risk

Answer

Pediatric surgical procedures

Answer

Internal organ anastomosis

Answer

Closure of deep fascial layers

Question 44

What is the appropriate knot configuration for securing most surgical sutures?

Accepted Answer

Square knot

Answer

Slip knot

Answer

Granny knot

Answer

Half-hitch knot

Question 45

Which statement accurately describes the relationship between suture size and tensile strength?

Accepted Answer

Larger suture diameter generally corresponds to higher tensile strength

Answer

Smaller suture diameter provides higher tensile strength

Answer

Suture size and tensile strength are unrelated

Question 46

When closing a deep subcutaneous layer, what is the primary reason for using an absorbable suture?

Accepted Answer

To avoid suture removal and minimize foreign body reaction

Answer

To ensure faster wound healing

Answer

To minimize scarring

Question 47

Which factor is LEAST likely to influence suture selection for a particular procedure?

Accepted Answer

Surgeon's personal preference

Answer

Presence of infection

Answer

Tissue type being sutured

Answer

Desired cosmetic outcome

Question 48

A patient is undergoing a laparoscopic cholecystectomy. Which suture material would likely be used for internal closure of the gallbladder bed?

Accepted Answer

Polyglycolic acid (Dexon)

Answer

Silk

Answer

Nylon

Answer

Stainless steel

Question 49

What is the primary reason for using a swaged needle in suturing?

Accepted Answer

It provides a secure and consistent connection between the suture and needle.

Answer

It allows for greater needle control and precision.

Answer

It reduces the risk of needle breakage during surgery.

Question 50

What is the main advantage of using a braided suture material?

Accepted Answer

Increased knot security.

Answer

Improved tissue handling.

Answer

Enhanced tensile strength.

Answer

Reduced risk of infection.

Question 51

A surgeon is performing a suture closure in a high-risk area with a potential for infection. Which suture material would be LEAST appropriate due to its high wicking capacity?

Accepted Answer

Silk

Answer

Polyglactin 910

Answer

Polypropylene

Answer

Nylon

Question 52

A patient has a history of allergies to catgut sutures. Which of the following suture materials would be a suitable alternative?

Accepted Answer

Polypropylene (Prolene)

Answer

Plain gut

Answer

Chromic gut

Answer

Polyglactin 910 (Vicryl)

Question 53

What is the primary consideration when choosing a suture material for a deep wound closure?

Accepted Answer

The expected healing time of the tissue.

Answer

The size of the needle used.

Answer

The cost of the suture material.

Answer

The surgeon's personal preference.

Question 54

A surgeon is performing a closure of a superficial skin wound. What is the primary goal of this procedure?

Accepted Answer

To approximate the wound edges and promote healing.

Answer

To eliminate the risk of infection.

Answer

To minimize scarring.