Abstract
Objective To analyze the factors influencing HIV transmission during ultrasonic periodontal scaling for HIV-infected patients. Methods Fifty male patients with HIV infection in the Infectious Diseases Department of Beijing Youan Hospital were selected to record SBI (sulcus bleeding index) and CD4+ T lymphocyte counts. the blood viral load (BVL) and blood–saliva mixture viral load (BSMVL) of HIV during the ultrasound scaling were measured by the EasyQ analyzer. The best cut-off value of continuous variables was defined by ROC curve. The influencing factors of BSMVL were explored by logistic regression. Results There were significant differences in SBI level and BVL between the two groups with and without viral load in BSM (P<0.05). The best cut-off values of SBI and BVL were 3 and 6 000 copies/mL. Logistic regression showed that BVL was an independent risk factor for BSMVL (OR=21.0, 95% CI: 4.0, 110.1). Conclusions BSMVL is the key index to evaluate the risk of HIV transmission during ultrasound scaling. The elevated SBI and BVL caused higher risk of HIV transmission by increasing BSMVL. CD4+ T lymphocyte count should not be the reference for the risk of HIV transmission. Key words: HIV; Ultrasonic periodontal scaling; Risk of transmission; Sulcus bleeding index; Viral load
Published Version
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