The author considers the results of conservative treatment of 9709 patients who received continuous intravenous drip nitroglycerin as a component of the basic therapy. For these patients hospital lethality amounted to 17.5%. The lethality in shown to vary with sex, age, infarction extent, primary or repeated occurrence. The results obtained were compared to those from other institutions. It is believed that hospital lethality standards should not be inappropriately overstated.