Practice advisory for preanesthesia evaluation: an updated report by the American Society of Anesthesiologists Task Force on Preanesthesia Evaluation. Code only the particular race when each a specific race code and a non-particular race code apply. Definite risk factors Suspected sphincter of Oddi dysfunction Female gender Previous pancreatitis Likely risk factors Younger age Non-dilated extrahepatic bile ducts Absence of continual pancreatitis Normal serum bilirubin Table 1 symptoms pregnancy buy isordil on line.