Assistant professor of anesthesiology, Assistant professor of anesthesiology, Srinivasa Thota, MD, Srinivasa Thota, MD, goes over the four main types of anesthesia and the content of the preoperative assessment that patients who have scheduled surgery will undergo. He explains how the effects of anesthesia can be enhanced for older adults, and what parents can do to help children who face surgery. goes over the four main types of anesthesia and the content of the preoperative assessment that patients who have scheduled surgery will undergo. He explains how the effects of anesthesia can be enhanced for older adults, and what parents can do to help children who face surgery.