Nosignificant differences in the decline of hemoglobin , hematocrit , and perioperative transfusion rates between groups were seen , whereas clot retention ( grade 2 ) after the treatment seemed to occur more often in the monopolar group ( 7 of 62 [ 12.3 % ] in monopolar group vs 1 of 63 [ 1/8 % ] in TURis group ; P = .061 ) .