Approximately what percent of newborns have life-threatening renal malformations?

The class of endogenous opioids found in the hypothalamus is

A) dynorphin B) morphine C) enkephalin D) beta endorphin

Which of the following drugs would be the safest for a patient with cardiovascular disease?

A) 4% articaine, 1:200,000 epinephrine B) 2% mepivacaine,1:20,000 levonordefrin C) 2% lidocaine, 1:50,000 epinephrine D) 4% prilocaine plain