Cardio Cascular Surgery:

An anesthesiologist is trained to provide pain relief and maintenance, or restoration of a stable condition during and immediately following an operation, an obstetric or diagnostic procedure. The anesthesiologist assesses the risk of the patient's condition prior to, during and after surgery. They provide medical management and consultation in
Asthesiologists can receive training in the following subspecialties:Critical Care Medicine - diagnoses, treats and supports patients with multiple organ dysfunction.
Pain Medicine - provides a high level of care for patients experiencing problems with acute, chronic and/or cancer pain.

Pediatric Anesthesiology - preoperative, intraoperative and postoperative anesthetic care of children and adolescents.There are several forms of anesthesia. The following forms refer to states achieved by anesthetics working on the brain:
General anesthesia: "Drug-induced loss of consciousness during which patients are not arousable, even by painful stimulation." Patients undergoing general anesthesia often cannot maintain their own airway and breathe on their own. While usually administered with inhalational agents, general anesthesia can be achieved with intravenous agents, such as propofol.[1]