The suture that maintains strength for longest time is: Lok Sewa Aayog 2079

 # The suture that maintains strength for longest time is:

 (A) Dexon 

(B) Vicryl 

(C) PDS 

(D) Chromic catgut 

The correct answer is C. PDS. 

The suture that maintains strength for the longest time is PDS (Polydioxanone). PDS is a synthetic absorbable suture that is gradually broken down by hydrolysis and is intended to be absorbed by the body over a period of approximately 6 months. In comparison, Vicryl (Polyglactin 910) and Dexon (Polyglycolic acid) are also absorbable sutures, but they typically maintain their strength for a period of 4 to 6 weeks and 4 to 6 months, respectively. Chromic catgut is a natural absorbable suture that is made from purified collagen fibers derived from the serosal layer of sheep intestines. Its strength retention is about 14 to 21 days.