Acute dilatation of the heart requires complete rest and an abstemious diet. It is especially necessary to restrict the amount of fluids taken so that the heart and blood-vessels will not be overfilled. A dry diet and frugal fare, such as tender lean meat, dry breador toast, and a minimum of milk or water, should be adhered to for a few days. Such a regimen cannot long be maintained, nor is it long necessary. As a rule, the heart rapidly contracts. When it approaches its normal dimensions a variety of simply prepared foods may be permitted, but the quantities given must be small or moderate. The bowels must be moved regularly and thoroughly. The dietetic regimen is designed to lessen arterial tension and cardiac work. Rest, followed by graduated exercise, and sometimes cardiac and general tonics, must be relied upon to effect a cure.