Pre-operative laboratory testing: A prospective study on comparison and cost analysis.

Pre-operative testing is a standard part of surgical preparation. Yet, in many regions, including India, there are no clear guidelines to determine which tests are necessary. Prior research has shown that some tests are performed routinely without clear evidence of benefit. This gap motivated a closer look at how often these tests align with established standards like NICE guidelines. No prior work had resolved how much of this testing is unnecessary or how much it costs. This uncertainty drove the need for a study focused on test relevance and financial impact. The absence of a structured framework for pre-operative testing is a recognized issue in surgical planning. This paper addresses the lack of evidence-based guidance for routine pre-operative investigations. The study aims to clarify whether these tests are truly necessary or if they add unnecessary cost.

This study aimed to evaluate the relevance of commonly ordered pre-operative laboratory tests in a clinical setting. The focus was on comparing these tests with NICE guidelines to determine if they were indicated. The motivation came from the lack of standardized guidelines in India for pre-operative testing. The researchers wanted to assess how often tests were ordered unnecessarily. They also sought to quantify the financial impact of these unindicated tests. The study’s goal was to inform better decision-making for clinicians ordering tests. By analyzing test results and guidelines, the team aimed to highlight inefficiencies. The ultimate purpose was to improve cost-effectiveness in pre-operative care.

The study was conducted at a tertiary care hospital and involved 163 patients undergoing elective surgery. Researchers collected data on all pre-operative tests ordered for these patients. They categorized each test result as normal or abnormal. The NICE guidelines were used to determine if the tests were indicated or unindicated. Surgeons and anaesthesiologists were not informed about the study. This ensured unbiased data collection from clinical practice. A total of 984 tests were analyzed across all patients. The researchers focused on identifying tests that did not align with NICE recommendations.

Out of 984 tests, 515 were unindicated, representing 52% of all tests. Only 43 patients (26%) had tests aligned with NICE guidelines. Among the unindicated tests, 7 (1.3%) returned abnormal results. None of these abnormal results led to changes in anaesthetic plans or interventions. The most frequently unindicated tests were chest X-rays and echocardiograms. Chest X-rays were unindicated in 93% of cases, and echocardiograms in 92.5%. The cost of unindicated tests was 63% of the total testing cost. These findings suggest a significant financial burden from unnecessary testing.

The authors suggest that pre-operative testing often includes unnecessary investigations. Based on the study, most unindicated tests did not impact clinical decisions. The researchers propose that patient-specific factors should guide test ordering. They emphasize the need for guidelines to reduce unnecessary costs. The study highlights that many tests are ordered routinely without clear justification. The authors suggest that aligning with NICE guidelines could improve cost efficiency. They propose that clinicians should consider surgical grade and patient history before ordering tests. The findings imply that current practices may not be evidence-based.