The gynecology unit received a patient with uterine bleeding that started 6 hours after induced abortion at the term of 11-12 weeks. Objectively the skin is pale, pulse is 100/min., blood pressure is 100/70 mm Hg. On vaginal examination the uterus is painless, its enlargement corresponds to the 10th week of pregnancy; uterine cervix is dilated enough to let in one finger, there are fragments of the fertilized ovum. What actions should be taken next: