Effect of the preoperative ingestion of vitamin K1 on prothrombin time. Hypoprothrombinemia, rarely a cause of bleeding after tonsillectomy, warrants attention where malnutrition is suspected.
D000233:Adenoidectomy; D002648:Child; D002675:Child, Preschool; D003677:Deficiency Diseases / Q000150:complications; D005260:Female; D006470:Hemorrhage; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000517:prevention & control*; D011300:Preoperative Care; D011517:Prothrombin Time; D014068:Tonsillectomy; D014812:Vitamin K / Q000008:administration & dosage*
D014812:Vitamin K