2026/2027
NIFA RNFA OR Fundamental Exam
2026/2027 Comprehensive Study
Guide, Practice Questions, Test Bank
Review, and Certification
Preparation Manual
Question 1
A surgical suture is best defined as:
A. A clamp used to stop bleeding
B. A strand of material used to ligate blood vessels, occlude a lumen, or approximate
tissue until healing occurs
C. A dressing applied over wounds
D. A sterile adhesive used for skin closure
Correct Answer: B. A strand of material used to ligate blood vessels, occlude a
lumen, or approximate tissue until healing occurs
Rationale:
A suture is specifically a strand-like material used in surgery to ligate blood vessels,
close lumens, or hold tissues together until natural healing restores integrity. Option A
is incorrect because clamps are instruments used temporarily for hemostasis, not
materials left in tissue. Option C refers to wound coverings, which protect but do not
approximate tissues. Option D describes adhesive agents such as skin glue, which are
not sutures.
Question 2
Which factor is MOST important when selecting an appropriate suture material?
A. Surgeon preference only
B. Absorption rate, tensile strength, tissue reactivity, and surgical needs
C. Color of the suture material
D. Availability in the operating room only
Correct Answer: B. Absorption rate, tensile strength, tissue reactivity, and
surgical needs
Rationale:
Suture selection depends on multiple biological and mechanical factors such as
,2026/2027
absorption rate, tensile strength, tissue compatibility, handling properties, and surgical
requirements. These factors ensure proper wound healing and reduced complications.
Option A is incorrect because preference alone is not sufficient. Option C is irrelevant
clinically. Option D is incorrect because availability does not determine
appropriateness.
Question 3
Tensile strength of a suture refers to:
A. Its ability to dissolve in tissue
B. The amount of force required to break the suture strand
C. Its ability to stick to tissues
D. The time it takes to degrade in the body
Correct Answer: B. The amount of force required to break the suture strand
Rationale:
Tensile strength is a mechanical property describing how much pulling force a suture
can withstand before breaking. It is crucial for maintaining wound closure under
tension. Option A describes absorption. Option C refers to adhesion, which sutures do
not rely on. Option D relates to absorption rate, not strength.
Question 4
Suture size is best described as:
A. The length of the suture strand
B. The diameter of the suture, where higher zeros indicate smaller size
C. The strength of the knot
D. The absorption speed of the material
Correct Answer: B. The diameter of the suture, where higher zeros indicate
smaller size
Rationale:
Suture size is expressed in numerical “0” scale where more zeros indicate a smaller
diameter (e.g., 4-0 is smaller than 3-0). This system standardizes material thickness.
Option A is incorrect because size is not length-based. Option C refers to knot
security. Option D describes absorption rate.
Question 5
Absorption rate of a suture refers to:
,2026/2027
A. Time taken for the suture to lose tensile strength and be absorbed by the body
B. The number of knots it can hold
C. The thickness of the material
D. Its resistance to cutting
Correct Answer: A. Time taken for the suture to lose tensile strength and be
absorbed by the body
Rationale:
Absorption rate describes how quickly a suture is broken down and absorbed by the
body, which correlates with loss of tensile strength. Option B is incorrect because
knot performance is unrelated. Option C describes size. Option D refers to mechanical
resistance, not absorption.
Question 6
The primary purpose of suturing is to:
A. Reduce pain after surgery
B. Approximate wound edges and maintain integrity until healing occurs
C. Destroy infected tissue
D. Replace lost skin tissue permanently
Correct Answer: B. Approximate wound edges and maintain integrity until
healing occurs
Rationale:
Suturing is used to bring tissue edges together and maintain alignment until natural
healing provides sufficient strength. Option A is secondary and not the primary
purpose. Option C is incorrect because sutures do not remove tissue. Option D is
incorrect because sutures do not replace tissue.
Question 7
A monofilament suture is best described as:
A. Multiple fibers braided together
B. A single continuous strand of material
C. A dissolvable mesh
D. A metallic wire only
Correct Answer: B. A single continuous strand of material
Rationale:
Monofilament sutures consist of a single strand, which reduces tissue drag and lowers
infection risk. Option A describes multifilament sutures. Option C is incorrect
, 2026/2027
because mesh is a different surgical material. Option D is only one subtype of non-
absorbable sutures, not all monofilaments.
Question 8
Which is an advantage of monofilament sutures?
A. Increased bacterial harboring
B. Smooth passage through tissues with reduced infection risk
C. High tissue drag
D. Poor flexibility and knot security
Correct Answer: B. Smooth passage through tissues with reduced infection risk
Rationale:
Monofilament sutures have a smooth surface that reduces tissue resistance and lowers
bacterial colonization risk. Option A is incorrect because monofilaments reduce, not
increase, infection risk. Option C is wrong because they have low drag. Option D is
partially true regarding knot security, but overall they are not described as poorly
flexible.
Question 9
Multifilament sutures are characterized by:
A. Single smooth strand structure
B. Braided or twisted multiple fibers
C. Metallic composition only
D. No flexibility
Correct Answer: B. Braided or twisted multiple fibers
Rationale:
Multifilament sutures consist of several fibers braided together, improving flexibility
and knot security. Option A describes monofilament. Option C is incorrect because
metals are a separate class. Option D is false because they are actually more flexible.
Question 10
Which suture type has better knot security?
A. Monofilament
B. Multifilament
C. Glass sutures
D. Plastic sheets
NIFA RNFA OR Fundamental Exam
2026/2027 Comprehensive Study
Guide, Practice Questions, Test Bank
Review, and Certification
Preparation Manual
Question 1
A surgical suture is best defined as:
A. A clamp used to stop bleeding
B. A strand of material used to ligate blood vessels, occlude a lumen, or approximate
tissue until healing occurs
C. A dressing applied over wounds
D. A sterile adhesive used for skin closure
Correct Answer: B. A strand of material used to ligate blood vessels, occlude a
lumen, or approximate tissue until healing occurs
Rationale:
A suture is specifically a strand-like material used in surgery to ligate blood vessels,
close lumens, or hold tissues together until natural healing restores integrity. Option A
is incorrect because clamps are instruments used temporarily for hemostasis, not
materials left in tissue. Option C refers to wound coverings, which protect but do not
approximate tissues. Option D describes adhesive agents such as skin glue, which are
not sutures.
Question 2
Which factor is MOST important when selecting an appropriate suture material?
A. Surgeon preference only
B. Absorption rate, tensile strength, tissue reactivity, and surgical needs
C. Color of the suture material
D. Availability in the operating room only
Correct Answer: B. Absorption rate, tensile strength, tissue reactivity, and
surgical needs
Rationale:
Suture selection depends on multiple biological and mechanical factors such as
,2026/2027
absorption rate, tensile strength, tissue compatibility, handling properties, and surgical
requirements. These factors ensure proper wound healing and reduced complications.
Option A is incorrect because preference alone is not sufficient. Option C is irrelevant
clinically. Option D is incorrect because availability does not determine
appropriateness.
Question 3
Tensile strength of a suture refers to:
A. Its ability to dissolve in tissue
B. The amount of force required to break the suture strand
C. Its ability to stick to tissues
D. The time it takes to degrade in the body
Correct Answer: B. The amount of force required to break the suture strand
Rationale:
Tensile strength is a mechanical property describing how much pulling force a suture
can withstand before breaking. It is crucial for maintaining wound closure under
tension. Option A describes absorption. Option C refers to adhesion, which sutures do
not rely on. Option D relates to absorption rate, not strength.
Question 4
Suture size is best described as:
A. The length of the suture strand
B. The diameter of the suture, where higher zeros indicate smaller size
C. The strength of the knot
D. The absorption speed of the material
Correct Answer: B. The diameter of the suture, where higher zeros indicate
smaller size
Rationale:
Suture size is expressed in numerical “0” scale where more zeros indicate a smaller
diameter (e.g., 4-0 is smaller than 3-0). This system standardizes material thickness.
Option A is incorrect because size is not length-based. Option C refers to knot
security. Option D describes absorption rate.
Question 5
Absorption rate of a suture refers to:
,2026/2027
A. Time taken for the suture to lose tensile strength and be absorbed by the body
B. The number of knots it can hold
C. The thickness of the material
D. Its resistance to cutting
Correct Answer: A. Time taken for the suture to lose tensile strength and be
absorbed by the body
Rationale:
Absorption rate describes how quickly a suture is broken down and absorbed by the
body, which correlates with loss of tensile strength. Option B is incorrect because
knot performance is unrelated. Option C describes size. Option D refers to mechanical
resistance, not absorption.
Question 6
The primary purpose of suturing is to:
A. Reduce pain after surgery
B. Approximate wound edges and maintain integrity until healing occurs
C. Destroy infected tissue
D. Replace lost skin tissue permanently
Correct Answer: B. Approximate wound edges and maintain integrity until
healing occurs
Rationale:
Suturing is used to bring tissue edges together and maintain alignment until natural
healing provides sufficient strength. Option A is secondary and not the primary
purpose. Option C is incorrect because sutures do not remove tissue. Option D is
incorrect because sutures do not replace tissue.
Question 7
A monofilament suture is best described as:
A. Multiple fibers braided together
B. A single continuous strand of material
C. A dissolvable mesh
D. A metallic wire only
Correct Answer: B. A single continuous strand of material
Rationale:
Monofilament sutures consist of a single strand, which reduces tissue drag and lowers
infection risk. Option A describes multifilament sutures. Option C is incorrect
, 2026/2027
because mesh is a different surgical material. Option D is only one subtype of non-
absorbable sutures, not all monofilaments.
Question 8
Which is an advantage of monofilament sutures?
A. Increased bacterial harboring
B. Smooth passage through tissues with reduced infection risk
C. High tissue drag
D. Poor flexibility and knot security
Correct Answer: B. Smooth passage through tissues with reduced infection risk
Rationale:
Monofilament sutures have a smooth surface that reduces tissue resistance and lowers
bacterial colonization risk. Option A is incorrect because monofilaments reduce, not
increase, infection risk. Option C is wrong because they have low drag. Option D is
partially true regarding knot security, but overall they are not described as poorly
flexible.
Question 9
Multifilament sutures are characterized by:
A. Single smooth strand structure
B. Braided or twisted multiple fibers
C. Metallic composition only
D. No flexibility
Correct Answer: B. Braided or twisted multiple fibers
Rationale:
Multifilament sutures consist of several fibers braided together, improving flexibility
and knot security. Option A describes monofilament. Option C is incorrect because
metals are a separate class. Option D is false because they are actually more flexible.
Question 10
Which suture type has better knot security?
A. Monofilament
B. Multifilament
C. Glass sutures
D. Plastic sheets
