Factors influencing antiretroviral adherence are multifactorial. They can be internal – pertaining to the person, and external – pertaining to those providing the care and to the medicines themselves. (14) External factors affecting an individual’s adherence can also be structural and systemic.
The advent of the COVID-19 pandemic in 2020 brought with it a multitude of unforeseen challenges for People Living with HIV (PLHIV). Aside from the impacts on daily life caused directly by the pandemic and associated restrictions, many health services limited face-to-face appointments and converted to telehealth. Despite this, HIV care continued albeit in a new hybrid model, with access to ART and adherence largely uninterrupted. (15, 16)
Nursing interventions depend on the setting and the patient population. There is no single guideline or recommendation that will prove beneficial for all patient groups; therefore, a variety of strategies may need to be trialled until one or more are successfully adopted by the patient.
Nursing strategies to encourage, improve and maintain adherence include discussing potential antiretroviral regimens with consideration to lifestyle, comorbidities, family history, evidence surrounding early treatment and continuing therapy once commenced. (17-19)
Long-acting injectable antiviral therapy (LA ART) provides another avenue for nurses to work with and support patients around adherence, whilst providing an alternative to taking a daily oral tablet for those reluctant to do so. Given the frequency of injections and the role of nurses in primary care and hospital outpatient departments already in administering immunisations and other injectable medication to PLHIV, there is a strong argument that nurses lead the delivery of LA ART and associated adherence education and support within their health services.
Table 8 summarises internal or individual factors affecting adherence and nursing interventions. Table 9 summarises external factors relating to the medication affecting adherence and nursing interventions and Table 10 summarises external factors relating to health-care providers and the broader system.
Table 8: Individual factors affecting adherence and nursing interventions (20)
Individual -related factors influencing adherence | Comments and evidence | Nursing interventions |
Younger age at HIV diagnosis | Shown to predict poorer antiretroviral adherence. (21) |
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Ambivalence around commitment to life-long treatment | Regardless of age, starting a medication that requires life-long commitment can be daunting. | Explore the concerns behind ambivalence.
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Alternative or poorly informed health beliefs | There are many myths surrounding both HIV and antiretroviral therapy. These may contribute to an individual’s reluctance to start and adhere to therapy. (22-24) |
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Stigma related to taking antiretroviral therapy | HIV-related stigma can affect a person’s willingness to start and adhere to antiretroviral therapy. (25) |
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Occupational | Shift work or regular travel may make daily adherence to medication difficult. |
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Lack of support network and poor engagement in health care | Social isolation and poor engagement in health care have been identified as a predictor of poor medication adherence. |
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Financial barriers | Despite universal health care and subsidised antiretroviral therapy in Australia, evidence shows that 3% of Australians cease antiretroviral therapy each year. (27)
Cost of living crisis in Australia at time of update to guideline (2024) may also impact access to care and ART. |
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Mental illness | Depression and mental illness are predictors of poor adherence. (29-31) |
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Psychosocial factors | Family violence, unstable housing, food insecurity contributes to suboptimal adherence. | Explore the client’s priorities which may be different from assumed or caregiver priorities.
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Alcohol and other drug use | The use of amphetamine-type stimulants (ATS: such as methamphetamine) has been identified as playing an important role in difficulties with adherence to antiretroviral therapy.
ATS use has been described as a barrier to adherence among gay and bisexual men. This may be both planned and unplanned non-adherence. (32) |
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Cognitive impairment and ageing | As Australia’s population ages, so too are PLHIV, many of whom have been living with HIV in the pre- antiretroviral therapy era. (33) |
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Level of health literacy | Poor health literacy is a strong predictor of poor health and negative treatment outcomes, and as such needs to be explored with the client and accounted for during adherence counselling sessions.(34, 35) It is important to help the person understand the need to continue taking treatment when they feel well, and to understand health jargon terminology and meaning e.g. undetectable viral load does not mean the virus has gone. (36) |
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Ethnicity and cultural influences | People from different cultures hold varying beliefs around ill health and medication and may influence a person’s acceptance of their HIV diagnosis and willingness to accept treatment. |
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CALD: culturally and linguistically diverse; CNS: central nervous system; HAND: HIV-associated neurocognitive disorder
Table 9: Medication-related factors affecting adherence and nursing interventions.
Medication-related factors | Comments and evidence | Nursing interventions |
Pill burden | As the HIV population ages, concomitant medication use accumulates and can lead to suboptimal antiretroviral therapy adherence. |
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Adverse effects/ Toxicities | Undesirable effects attributed to ART can have a negative effect on the capacity of the individual to maintain daily activities and life events.
Poorly managed symptoms or early toxicities can lead to poor adherence and influence people’s decisions to seek and remain engaged in care. (37) |
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Drug-drug interactions | Actual or potential drug-drug interactions can introduce complexity affecting adherence. |
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Food requirements | The food requirements associated with some antiretroviral therapy regimens may act as a barrier to optimal adherence. |
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Table 10: Provider, health system and socio-political factors affecting adherence and nursing interventions.
Provider, health system and socio-political factors | Comments and evidence | Nursing interventions |
Service access | Access to health services may provide a barrier for clients living in remote and rural regions.
Physical access to a service may also pose a barrier for an individual living with a disability. Specific settings such as prison, immigration detention or other institutional settings may thwart or support adherence. (38) |
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Cost | See Financial barriers | |
Provider attitude | Institutionalised stigma may prevent people with HIV engaging in their care. (39) |
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Incorrect prescribing, dispensing or administration. (42) | Prescriber errors can contribute to suboptimal adherence as can incorrectly dispensing from a pharmacy,
dosing errors and drug interactions. (43)
Consequences can include: o Drug resistance o Treatment failure o Toxicities o Loss of trust o Increased costs o Legal implications. (44) |
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Fragmented or uncoordinated care | Poor continuity of care may contribute to poor adherence. |
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Other psychosocial and socio-political factors | Examples:
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