The late-presenting HIV-infected patient 30 years after the introduction of HIV testing: spectrum of opportunistic diseases and missed opportunities for early diagnosis

OBJECTIVES

The aim of the study was to describe the characteristics of HIV-infected late presenters, opportunistic diseases at diagnosis and missed opportunities to diagnose HIV infection earlier.

METHODS

In a retrospective cohort study, we reviewed the medical records of all adults with newly diagnosed HIV infection admitted to the Department of Infectious Diseases of the Vivantes Auguste-Viktoria Hospital, Berlin, Germany.

RESULTS

In the 5-year period from 2009 to 2013, 270 late presenters were identified. The most common AIDS-defining conditions were oesophageal candidiasis (n = 136; 51%), wasting syndrome (n = 106; 40%) and pneumocystis pneumonia (n = 91; 34%). Fifty-five patients (21%) had presented with at least one HIV indicator condition on prior contact with health care services without being offered testing for HIV. Female patients and heterosexual men [not men who have sex with men ('non-MSM')] had a significantly higher chance of being among patients previously presenting with indicator conditions and not being tested [odds ratio (OR) 4.7; 95% confidence interval (CI) 2.2-10.0; P < 0.001; and OR 2.4; 95% CI 1.2-5.1; P < 0.01, respectively]. The most commonly missed indicator conditions were leucocytopenia (n = 13; 24%), thrombocytopenia (n = 12; 22%), oral candidiasis (n = 9; 16%), unexplained weight loss (n = 7; 13%), herpes zoster (n = 5; 9%) and cervical dysplasia/cancer (n = 4; 20% of women). The median time between presentation with an indicator condition and the diagnosis of HIV infection was 158.5 days [interquartile range (IQR) 40-572 days]. Patients with oral candidiasis and unexplained weight loss had the shortest time between the "missed opportunity" and the diagnosis of HIV infection. Fifty-five hospital admissions with a total cost of over EUR 500 000 and - most importantly - six in-hospital deaths might have been prevented if HIV testing had been performed in patients with documented indicator conditions.

CONCLUSIONS

Indicator conditions are still missed by clinicians. Women and 'non-MSM' are at highest risk of presenting with an indicator condition but not being tested for HIV infection.

Missed opportunities for HIV testing persist despite a single educational intervention: how can we close this evidence-practice gap?

BACKGROUND

In Australia, one-third of human immunodeficiency virus (HIV) diagnoses occur late, with an estimated 11% of people with HIV unaware of their diagnosis. Undiagnosed and untreated HIV infection increases morbidity in the HIV positive person and allows onward transmission of HIV.

AIM

To determine the rate of HIV testing in acute general medicine patients with HIV indicator conditions (IC) and evaluate the effectiveness of an educational intervention in improving testing rates.

METHODS

Single-centre, tertiary hospital, before-after study of general medicine inpatients with IC for 12 weeks prior and 10 weeks post an educational intervention focusing on recommendations for HIV testing including IC. The REASON Cohort Discovery Tool was used to search for the IC using ICD-10 codes and laboratory data. The presence of IC was estimated, and HIV testing rates before and after the intervention were compared. Regression analysis was utilised to identify characteristics associated with HIV testing.

RESULTS

Of 1414 admissions in the baseline period and 946 in the post-period, 161 (11.4%) and 132 (14.0%) had at least one IC present respectively. There were 18 (11.2%) HIV tests performed for admissions with IC in the pre-period which increased to 27 (20.5%) (P = 0.028) in the post-period. Younger patients were more likely to be tested and regression analysis identified the educational intervention (adjusted odds ratio) 2.2 (1.1, 4.4) to be significantly associated with testing.

CONCLUSIONS

Although HIV testing rates for IC doubled following the intervention, they remained unacceptably low. The recently introduced electronic medical record presents opportunities to prompt HIV testing.

Opportunities for improved indicator-based HIV testing in the hospital setting: a structural equation model analysis

Indicator condition (IC)-guided HIV testing, i.e., testing when diagnosing a condition associated with HIV, is a feasible and cost-effective testing strategy to identify undiagnosed individuals. Assessing determinants for IC-guided testing may identify opportunities for improvement. A survey study based on the Theory of Planned Behaviour (TPB) was conducted among 163 hospital physicians from five specialties in Amsterdam, the Netherlands. Structural equation models were used to determine the association between the TPB domains (i.e., attitude, belief, norms, self-efficacy and behavioural control) and (1) the intention to test as a mediator for HIV testing behaviour (intentional model) and (2) actual HIV testing behaviour (direct model). Both models accounted for the effect of guideline recommendations. Behaviour scored lower than intention on a five-point scale (mean score of 2.8, SD = 1.6 versus 3.8, SD = 1.1; p<0.0001). The direct model had a better fit than the intentional model based on fit statistics. Discrepancies between the determinants most important for intention versus those for behaviour led to the following recommendations: interventions to improve IC-guided testing in hospitals should primarily focus on implementation of guideline recommendations, followed by improving physicians' attitude towards IC-guided HIV testing and self-efficacy, as these were the most important correlates of actual HIV testing behaviour.