The problem of obstetric hemorrhage is discussed on the basis of 56, 347 births to lying on the "Sloane Hospital for Women" of the Columbia Medical Center - Presbyterian. During this period there were 291 cases of placenta previa. In 2% of all the bleeding it exceeded 500 ml. In the last 10 years they have been observed and treated 101 cases Hypofibrinogenemia, for which intravenous administration of 3 to 6 grams of fibrinogen is advised.

The author briefly reviews the principles on which the histological tumor classification technique is based according to their degree of malignancy, which is useful to the clinic to establish a system based on the correlation has been established between the histological grading of malignancy grade and prognosis the further clinical course of malignant ovarian tumors. From a biochemical standpoint, the tissue microespectrofotométrica content determination DNA (deoxyribonucleic acid) and mediation of nucleolar diameter as expression of tissue content of RNA (ribonucleic acid), correlate well with the degree of malignancy established with histological techniques and traditional cytology.

The problem of obstetric hemorrhage is discussed on the basis of 56, 347 births to lying on the "Sloane Hospital for Women" of the Columbia Medical Center - Presbyterian. During this period there were 291 cases of placenta previa. In 2% of all the bleeding it exceeded 500 ml. In the last 10 years they have been observed and treated 101 cases Hypofibrinogenemia, for which intravenous administration of 3 to 6 grams of fibrinogen is advised.

The author briefly reviews the principles on which the histological tumor classification technique is based according to their degree of malignancy, which is useful to the clinic to establish a system based on the correlation has been established between the histological grading of malignancy grade and prognosis the further clinical course of malignant ovarian tumors. From a biochemical standpoint, the tissue microespectrofotométrica content determination DNA (deoxyribonucleic acid) and mediation of nucleolar diameter as expression of tissue content of RNA (ribonucleic acid), correlate well with the degree of malignancy established with histological techniques and traditional cytology.