A chromic gut suture is a sterile, absorbable surgical suture made from purified connective tissue and treated with chromic salts to delay absorption.
Composition:
Chromic gut sutures are made from the submucosal layers of sheep or goat intestines, or the serosal layer of beef intestines. The tissue is mostly collagen.
Treatment:
Chromic gut sutures are treated with chromic acid salts, which doubles the amount of time the suture holds and extends its full tensile strength to 18–21 days.
Tissue reaction:
Chromic gut sutures cause minimal tissue reaction during absorption. However, they can cause greater tissue inflammation than plain catgut sutures.
Packaging:
Chromic gut sutures are packaged in an alcoholic solution to keep them moist and fresh.
Uses:
Chromic gut sutures are used for general soft tissue approximation and ligation.