The most commonly used predictor of acute radiation symptoms is the whole-body absorbed dose . Several related quantities, such as the equivalent dose , effective dose , and committed dose , are used to gauge long-term stochastic biological effects such as cancer incidence, but they are not designed to evaluate acute radiation syndrome.  To help avoid confusion between these quantities, absorbed dose is measured in units of grays (in SI , unit symbol Gy ) or rads (in CGS ), while the others are measured in sieverts (in SI, unit symbol Sv ) or rems (in CGS). 1 rad = Gy and 1 rem = Sv. 
This topic will discuss the use of beta blockers in patients with acute MI and focus on those without heart failure or reduced left ventricular systolic dysfunction [ 1 ]. Other relevant issues regarding beta blockers are discussed elsewhere. (See "Major side effects of beta blockers" and "Use of beta blockers in heart failure with reduced ejection fraction" and "Prophylaxis against ventricular arrhythmias during and after acute myocardial infarction" and "Clinical features and treatment of ventricular arrhythmias during acute myocardial infarction" .)
Patients requiring oral corticosteroids should be weaned slowly from systemic corticosteroid use after transferring to Advair Diskus. Prednisone reduction can be accomplished by reducing the daily prednisone dose by mg on a weekly basis during therapy with Advair Diskus. Lung function (mean forced expiratory volume in 1 second [FEV 1 ] or morning peak expiratory flow [AM PEF]), beta-agonist use, and asthma symptoms should be carefully monitored during withdrawal of oral corticosteroids. In addition, patients should be observed for signs and symptoms of adrenal insufficiency, such as fatigue, lassitude, weakness, nausea and vomiting, and hypotension.