Are blood tests prior to ear operations in children necessary?--A retrospective analysis

摘要

BACKGROUND: Operations in children are often drastic events for patients and their parents. Most ENT operations are elective. Often blood tests are done even though there is no clinical evidence for coagulation disorders or anaemia in the medical history of the patient and their family. Since the joint statement of the German Societies of Oto-Rhino-Laryngology, Head and Neck surgery, of pediatrics and of anesthesiology regarding the necessity of coagulation tests prior to adenoidectomy or tonsillectomy in children we wanted to know whether blood tests have any effect for ear operations. METHODS AND PATIENTS: Data of 81 children were analysed, undergoing an ear operation during 2006/2007 at the department of Oto-Rhino-Laryngology in Bochum, retrospectively. Information on sex, age, hemoglobin concentration, platelet count, INR, thromboplastin time, prothrombin time, count of the white blood cells, Cholinesterase (CHE), Glutamat-Oxalacetat-Transaminase (GOT), Glutamat-Pyruvat-Transaminase (GPT), gamma-Glutamyltransferase (GT), Creatinkinase (CK), creatinine, c-reactive protein (CRP) and clinical history of postoperative complications (bleeding, infections) were collected. RESULTS: Out of 698 registered parameters 10,5 % were differing from the reference parameters. There were no abnormal bleedings or complications which could have been predicted by blood tests. CONCLUSIONS: The preoperative blood tests have no influence on the management of an elective ear operation. A thorough medical patient's and family history should be taken and may be added by a calculated analysis of special blood tests.