Sutures MCQs - Practice & Premium
Q1) True about suturing technique in vascular anastomosis
Vessels should always be sewn with the needle moving from within to without on the downstream edge of the vessel to avoid creating an intimal flap and to fix any atherosclerotic plaque.
Tip of the needle should be at right angle to the intima and curve of the needle should be followed.
Distal clamp is released first. Non-absorbable sutures should be used.
2-0 should be used for aorta, 4-0 for femoral and 6-0 for popliteal. Only non-absorbable monofilament sutures are used in vascular anastomosis.
Bailey 27, page 99
Tip of the needle should be at right angle to the intima and curve of the needle should be followed.
Distal clamp is released first. Non-absorbable sutures should be used.
2-0 should be used for aorta, 4-0 for femoral and 6-0 for popliteal. Only non-absorbable monofilament sutures are used in vascular anastomosis.
Bailey 27, page 99
Q2) Lembert suture refers to:
Lembert sutures are seromuscular, used in bowel anastomosis to avoid full thickness penetration.
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Q4) PDS is absorbed within:
Ans d
Q5) Surgically used suture material polydioxanone:
Ans: b
Q6) Harmonic scalpel frequency of vibration is:
A a – 20K to 50 kHz
Harmonic scalpel cuts through tissues and causes coagulation by protein denaturation caused by vibrating force.
Compared to cautery, harmonic scalpel:
- takes longer time
- produces less smoke
- causes less tissue edema and swelling
Ref: Bailey page 49
Harmonic scalpel cuts through tissues and causes coagulation by protein denaturation caused by vibrating force.
Compared to cautery, harmonic scalpel:
- takes longer time
- produces less smoke
- causes less tissue edema and swelling
Ref: Bailey page 49
Q7) PDS is:
Ans: b
PDS – Synthetic monofilament
Prolene – Synthetic monofilament
Dexon – Synthetic braided
Polyester – Synthetic braided
Silk – Braided biological
PDS – Synthetic monofilament
Prolene – Synthetic monofilament
Dexon – Synthetic braided
Polyester – Synthetic braided
Silk – Braided biological
Q8) Nerve least likely to be injured due to prolonged OT time is:
Ans: b) Sural
Anaesthetised patient can be exposed to neuropraxia (nerve injury) which in some cases can be permanent and disabling. These are the brachial plexus, ulnar nerve and common peroneal nerve.
Ref: Bailey page 88
Anaesthetised patient can be exposed to neuropraxia (nerve injury) which in some cases can be permanent and disabling. These are the brachial plexus, ulnar nerve and common peroneal nerve.
Ref: Bailey page 88
Q9) Langer’s line represent:
Ans: a) Dermal collagen fibres
Represents orientation of the dermal collagen fibres. Incisions placed parallel to these lines result in better scar.
Ref: Bailey page 85
Represents orientation of the dermal collagen fibres. Incisions placed parallel to these lines result in better scar.
Ref: Bailey page 85
Q10) Distance between sutures should be... of the distance from the edge:
Ans: a) Equal
Rule of thumb: The distance of insertion from the edge should match tissue thickness. Each successive suture should be placed at twice this distance apart.
Ref: Bailey page 91
Rule of thumb: The distance of insertion from the edge should match tissue thickness. Each successive suture should be placed at twice this distance apart.
Ref: Bailey page 91