Expenses accounts are equity accounts with a debit balance. Expense accounts are considered contra equity accounts because their balance decreases the overall equity balance. In other words, debiting an expense account increases the balance instead of decreasing it like most other equity accounts. Expenses are subtracted from revenues to calculate overall equity in the expanded accounting equation and calculate net income on the income statement.
Following completion of a 2 to 3 year program they are required to pass a national certification examination. Nurse anesthetists are nonphysician anesthetists who specialize in the provision of anesthesia care and participate in the administration of anesthesia in a variety of surgical cases. They are frequently supervised by an anesthesiologist, but may also work under the supervision of other physicians.
Nurse anesthetists are advanced practice nurses who administer anesthesia to patients undergoing surgical operations. In fact, some hospitals do not employ anesthesiologists and rely exclusively on nurse anesthetists to administer anesthesia -- especially in small or rural hospitals.