Incidence and risk factors of preanesthetic abnormality of complete blood count, blood chemistry, chest radiography and electrocardiography in low-risk patients
Keywords:
preoperative testing, incidence, low-risk patientAbstract
Background: Although it is generally agreed that a medical history and physical examination should be obtained as part of preoperative evaluation, there is still substantial controversy about the additional benefits of preoperative screening tests especially in low-risk patient.
Objectives: The aim of this study was to evaluate the incidence and factors contribute to abnormal preoperative testing in low-risk patients undergoing non-cardiac surgery.
Methods: This cross-sectional study was conducted in Phichit Hospital. The data of patient with ASA class 1 and 2 were collected from October 2019 to December 2019. Incidence of abnormal test were analyzed. Studied risk factors (age group, ASA class, comorbid condition, emergency operation, type of operation and anesthetic technique) were analyzed for correlation to each test. Factors contributed to abnormal results in significant of p<0.05 were further analyzed in Fisher’s exact test and Logistic regression
Result: 1,404 patients were enrolled in this study. Hematocrit was the most preoperative testing about 98%. The most ratio of abnormal testing was Liver function test about 12%.The ASA class 2 was significantly related to incidence of abnormal preoperative testing. In a logistic regression analysis, age ≥ 45years old, ASA class 2, comorbid condition ≥ 1 were associated with abnormal preoperative hematocrit and chest radiography. Comorbid disease ≥ 2 was predictive factor of abnormal electrocardiogram.
Conclusions: Age more than 45 years old and higher ASA class patients should have any preoperative testing. Electrocardiogram was recommended in patient who have more than 2 comorbid conditions.
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