Here are a few links you might find usefulwww.ncbi.nlm.nih.gov/pubmed/10768713cat.inist.fr/?aModele=afficheN&cpsidt=3425165www.ssat.com/cgi-bin/abstracts/97ddw/ddw104.cgi
In the UK there is a slight preference on performing the op in 2 stages, however in carefully selected patients one step is fairly common. The Radcliffe in Oxford reckon about
25% of theirs are done in one step. The final decision is normally made when the patient is on the table and if there is any doubt they are given a diverting stoma.
I know a number of people who have had their surgery done this way, recovery from the surgery tended to be longer but then they did not have a second surgery to recover from. Longer term they are all fine.