When should we order preoperative complete blood count and urinalysis: A systematic review and clinical practice guidelines.

Routine preoperative investigation is expensive especially at this time when Thailand is suffering a severe financial crisis. Objectives of the study were to apply a systematic review to answer the question whether routine preoperative investigation affected health outcomes; and to construct clinical practice guidelines for preoperative complete blood count (CBC) and urinalysis (UA). The guidelines were prepared for elective, non-cardiothoracic surgery in adult patients. Methods of the study were Medline search (1980-1998) and a search of studies published in Thailand. Criteria for high validity and reliability were applied to paper selection. The results of the systematic review were discussed among anesthesiologists and other specialists and the guidelines were drawn by consensus. Results from the systematic review found that there were no randomized controlled trials to answer the question and no studies reported health outcomes. Routine preoperative CBC and urinalysis yielded few clinically significant positive results and was not very useful for patient care. From this review and the consensus, we proposed a guidelines, which consisted of a history questionnaire, physical examination and indication for investigation. For the pre-operative CBC the indication were: age > 60 years, would have an operation that needed blood transfusion, had acute or chronic blood loss, malnutrition, pregnancy, heart disease, cancer, chronic renal failure, liver disease, severe infection, SLE, connective tissue disease, radiotherapy or chemotherapy. The guidelines for preoperative UA were: pregnancy, diabetes, abnormal urination, chronic renal failure, SLE or connective tissue disease. Preoperative CBC and UA requests according to these guidelines should be more cost-effective and routine preoperative investigation should be abandoned.

Renal transplantation in Thai children.

Renal transplantation in children has been performed for over 25 years in developed countries but has never been reported in Thai children. We report an 8 year-old girl with end-stage renal disease due to chronic glomerulonephritis who had been transplanted at Siriraj Hospital. She was treated with continuous peritoneal dialysis for 9 months and developed several episodes of bacterial peritonitis and hypertension. She was transplanted using her father’s kidney and her serum creatinine level was normal within 7 postoperative days. The patient developed severe hypertension which was controlled with 4 antihypertensive agents. Five weeks postoperation her new ureter leaked. Although surgery was performed with internal stent placed, the patient continued to have urinary leakage and ureteric reconstruction using bladder flap or her own ureter will be done later. The patient’s renal function was normal on follow up.