2022 Volume 56 Issue 1 Pages 127-129
To understand the importance of preoperative blood tests, we investigated the positive rate of hepatitis B (HBs antigen), hepatitis C (HCVIII antibody), and syphilis (RPR) in 3,277 cases at Osaka Dental University during the past five years. This is an important part of a patient's medical history. We also examined the self-assessment rate from questionnaires and medical interviews. The self-assessment rates for the questionnaires were 20% for RPR, 25% for HBs antigen, and 44% for HCVIII antibody. The prior determination rates, by questionnaires and medical interview, were RPR 20%, HBs antigen 50%, and HCVIII antibody 70%. The positive rates for the preoperative blood tests for syphilis, hepatitis B, and hepatitis C were 0.61%, 0.61% and 2.44% respectively. We found that it was difficult to grasp the positive cases for these infectious diseases by questionnaires and medical interviews, confirming the need for preoperative blood tests. (J Osaka Dent Univ 2022; 56: 127-129)
