Fumes from the spleen.
D000698:Analgesia; D000768:Anesthesia, General; D004992:Ethics, Medical; D006330:Heart Defects, Congenital / Q000601:surgery*; D006801:Humans; D007231:Infant, Newborn; D007235:Infant, Premature, Diseases / Q000601:surgery*; D010147:Pain Measurement; D011183:Postoperative Complications / Q000209:etiology*