@Merry Andrew,
Quote: s/p Ex.Lap, LDA, SBR.
Probably means external laparotomy - i.e., open up the gut; LDA likely relates to adhesions (lower duodenum??) - and SBR - as Bathsheba suggests, probably means small bowel resection (that's where the duodenum is).
So - they opened you up, found some adhesions on the wall of the duodenum in the small bowel, chopped them out and sewed you up again. You survived the op. without complications, but grizzled a bit when you went back to the ward!
Mind you - it may mean something else entirely. Murricans use funny words.
Hope you're about and chipper soon!
Happy Birthday and Happy New Year!