In pituitary apoplexy, the main initial problem is a lack of secretion of adrenocorticotropic hormone (ACTH, corticotropin), which stimulates the secretion of cortisol by the adrenal gland. This occurs in 70% of those with pituitary apoplexy.
DEFINITION of 'Net Present Value Rule'. A rule stating that an investment should be accepted if its net present value is greater than zero and rejected otherwise.According to the theory of net present value (NPV), participating in a positive NPV project will increase firm or shareholder wealth. rule stating that an investment should be accepted if its net present value is greater than zero and rejected otherwise.
IRR is calculated using the net present value (NPV) formula by solving for R if the NPV equals zero: NPV= â {Period Cash Flow / (1+R)^T} - Initial Investment, where R represents the interest rate and T represents the number of time periods.