The effectiveness of treatment depending on an adherence to dispensary observation and antiretroviral therapy in patients with HIV infection

Aim. Determination of the causes of deaths and analysis of the survival of people living with HIV, depending on an adherence to dispensary observation and treatment.

 Materials and methods. The analysis of socio-demographic characteristics and clinical and laboratory data of 284 adult HIV patients observed in 1999–2011 at the Lomonosov Interdistrict Hospital named after I. N. Yudchenko was carried out. Patients who followed the prescribed monitoring regimen (at least 2 times a doctor’s visit during the year) were considered committed to dispensary supervision. Patients who observed the regularity and continuity of monitoring and receiving antiretroviral therapy (ART) were considered committed to treatment. Among the patients included in the study, 115 people were committed to treatment or follow-up and 169 patients were non-committed. Objective (biological) indicators of adherence and effectiveness of treatmentwere the number of CD4 lymphocytes and the level of HIV viral load. Based on the method of comparing survival curves, factors related to the life expectancy of HIV patients were assessed, taking into account the gender of patients, their adherence to monitoring and treatment, indicators of HIV viral load and the number of CD4 lymphocytes and the outcome of the disease from the moment of registration at the dispensary and over the next 120 months (after 3 months, 6 months, 1.5 years, 2 years, 5, 7 and 10 years).

 Results and discussion. Significant differences were found in the survival curves of patients who received and did not receive ART (117.9 and 91.4 months, p<0.005) and patients who were committed and non-committed to therapy (116.9 and 83.8 months, p<0.005). Regardless of adherence to outpatient follow-up and therapy, the survival time of women compared to men for the entire follow-up period was longer (105.0 and 92.4 months, respectively, p<0.005). Among those committed to treatment, 21% of patients died due to concomitant somatic pathology, 5% from injuries incompatible with life. In the group of those committedto follow–up, the causes of deaths in 12% were various somatic pathology, brain lymphoma — in 1% and injuries incompatible with life — in 3% of cases. The highest mortality rates were recorded among patients who were not exposed to ART (71%) and the routine of follow-up (52%). Almost half of these patients (49%) died from secondary HIV infections, of which 85% of cases were posthumously diagnosed with tuberculosis, mainly the pulmonary form of the disease. The second most common cause of death was violent death, including drug poisoning.

 Conclusion. Regular dispensary observation, timely initiation of ART and adherence to therapy make it possible to control the disease, prevent the development of opportunistic pathology, and improve the quality and life expectancy of patients with HIV infection. Despite the increased availability of ART and strategies for active involvement and retention of patients in dispensary care, issues of patient adherence to therapy remain key in the management of HIV patients.

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