<prompt> What is true about the resection and anastomosis of necrotic bowel?Chromic catgut is used for anastomosisSubmucosa should not be in the suturesSingle-layer, extramucosal suture technique is preferredSingle-layer seromuscular suture technique is preferred  <response>: Single-layer, extramucosal suture technique is preferred as it causes the least tissue necrosis or luminal narrowing The extramucosal suture must include the submucosa because this has a high collagen content and is the most stable suture layer Catgut and silk have been replaced by synthetic, usually absorbable, polymers. The suture materials should be made of absorbable polymer- braided e.g. polyglactinmonofilament e.g. polydioxanone 