Blood loss during parenchymal transection was significantly lower in the stapler transection group ( P = 0002 ) , as were the parenchymal transection time ( mean ( s.d. ) 30 ( 21 ) versus 9 ( 7 ) min for clamp-crushing and stapler transection groups respectively ; P < 0001 ) and total duration of operation ( mean ( s.d. ) 221 ( 86 ) versus 190 ( 85 ) min ; P = 0047 ) .