Anemia in pediatric day-surgery patients: prevalence and detection

Preoperative tests recommendations in adult patients for ambulatory surgery

Anesthetic assessment traditionally included a series of laboratory tests intended to detect undiagnosed diseases, and to ensure that the patient undergoes surgery following safety criteria. These tests, without a specific clinical indication, are expensive, of questionable diagnostic value and often useless. In the context of outpatient surgery, recent evidence suggests that patients of any age without significant comorbidity, ASA physical status gradei and grade ii, do not need additional preoperative tests routinely. The aim of the present recommendations is to determine the general indications in which these tests should be performed in ASA gradei and grade ii patients undergoing ambulatory surgery.

Laboratory tests in children undergoing ambulatory surgery: a review of clinical practice and scientific studies

The drive for cost containment in the United States has lead anesthesiologists to re-assess the benefits of routine pre-operative laboratory and radiological testing. The value of routine tests has been questioned not only by insurance companies but also by physicians. Common pre-operative laboratory and radiological tests are reviewed in the following analysis. Specifically, the use of such tests in children scheduled for ambulatory surgery is discussed. Current clinical practice patterns of pediatric anesthesiologists are included so that physicians may make conclusions on the basis of published literature and clinical practice of peers.

Preoperative laboratory testing in children undergoing elective surgery: analysis of current practice

STUDY OBJECTIVE

To evaluate current practice in preoperative testing of healthy children undergoing elective surgery that is not expected to result in significant blood loss.

DESIGN

Survey of members of the Society for Pediatric Anesthesia.

SETTING

Anesthesiologists practicing in North America.

POPULATION

A total of 1,200 questionnaires were mailed.

INTERVENTIONS

Questionnaires were mailed to all members of the Society for Pediatric Anesthesia. All members were asked to specify which tests were routinely performed and to state why. Specific questions were asked about performing complete blood count (CBC), hemoglobin (Hb), hematocrit (Hct), and urine analysis (UA) in all patients, pregnancy test in adolescents, prothrombin time (PT) and activated partial thrombin time (PTT) prior to tonsillectomy, and sickle cell testing in black and/or Mediterranean children.

MEASUREMENTS AND MAIN RESULTS

685 of 1,200 (57%) questionnaires were returned. No attempt was made to identify and follow-up with nonresponders. Hb testing is routinely performed in 27% to 48% of the children depending on the age of the patient. UA is ordered preoperatively in less than 15% of the children. Pregnancy test was ordered by 43% of the respondents. Hemostatic tests prior to tonsillectomy were conducted by 45% of the anesthesiologists.

CONCLUSION

The results indicate the present practice of routine preoperative laboratory testing for children undergoing elective outpatient surgery. In spite of the many studies that indicate no specific benefits of performing routine preoperative testing in healthy children undergoing scheduled surgery, many physicians continue to order these tests in all such children.

"Routine" preoperative studies. Which studies in which patients?

The utility of mass screening of preoperative patients has never been demonstrated for the majority of tests. Although screening patients to uncover occult disease appears logical, in reality it has resulted in excessive expenditure of our health care dollars with limited benefit. More than $30 billion is spent annually on preoperative examinations, 60% of which are unnecessary. In addition, iatrogenic injury has resulted from the further evaluation and treatment of false-positive results. A selective utilization of routine examinations can accurately supplement the clinician's evaluation, providing the patient with a complete preoperative assessment. The benefits of selective testing must be balanced against the possible omission of warranted examinations, highlighting the need for a more reliable system for test ordering.