# Brief psychological intervention for the prevention of deliberate self-poisoning: A randomized controlled trial from Sri Lanka

**Authors:** Lakmini De Silva, Judi Kidger, Sampath Tennakoon, Andrew Dawson, Indika Gawarammana, Thilini Rajapakse, Jenna Scaramanga, Johanna Pruller

PMC · DOI: 10.1371/journal.pmen.0000562 · PLOS Mental Health · 2026-02-20

## TL;DR

A brief psychological intervention delivered by trained nurses reduced anxiety and improved coping strategies in patients after self-poisoning in Sri Lanka.

## Contribution

This study demonstrates the feasibility and effectiveness of training nurses to deliver brief psychological interventions for self-poisoning patients.

## Key findings

- The intervention significantly reduced anxiety and promoted positive coping strategies.
- Qualitative feedback showed participants found the counseling valuable for emotional support.
- No significant changes were observed in depression or alcohol use disorder rates.

## Abstract

Previous work suggests that many nurses in Sri Lanka, particularly those who work in primary care, involved in the medical treatment of persons who attempt self-poisoning already approach their role holistically and consider ‘providing mental health support as a part of nursing. However, at present, nurses are not given formal training on the delivery of such support, nor has the efficacy or feasibility of such an intervention been assessed in Sri Lanka. A mixed-method design was employed: a pilot randomized controlled trial with embedded qualitative methods. Participants (n = 300) were admitted to Teaching Hospital Peradeniya after non-fatal self-poisoning incidents. The brief psychological intervention consisted of a counselling session that encouraged participants to explore alternative strategies for managing emotional distress and future stressors. Ward nurses received training to deliver the intervention to assigned patients. Quantitative and qualitative data were collected at baseline and follow-up. At the six-month follow-up, the trail demonstrated the intervention’s effectiveness in significantly reducing anxiety and promoting positive coping strategies, although no significant differences were observed in depression rates or alcohol use disorder. Qualitative interviews indicated that participants, found the counselling valuable for emotional support and guidance in managing future interpersonal conflicts and stressors. Overall, this study suggests that brief psychological interventions can support the mental health of those at risk of self-poisoning and encouraging alternative coping strategies. When offering mental health support to individuals who have attempted self-poisoning, it is more feasible to assign dedicated, trained nurses than to expect all nurses to contribute.

## Linked entities

- **Diseases:** depression (MONDO:0002050)

## Full-text entities

- **Diseases:** overdose (MESH:D062787), distress (MESH:D012128), GAD-7 (MESH:C537955), DSH (MESH:D012652), dementia (MESH:D003704), Depressed (MESH:D003866), dengue (MESH:D003715), suicidal ideation (MESH:D001072), Anxiety (MESH:D001007), toxicity (MESH:D064420), DSP (MESH:D011041), mental illness (MESH:D001523), Alcohol Use Disorder (MESH:D000437), intellectual disability (MESH:D008607)
- **Chemicals:** alcohol (MESH:D000438), TAU (MESH:C000609666), BPI (-)
- **Species:** Homo sapiens (human, species) [taxon 9606]

## Full text

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## Figures

3 figures with captions in the complete paper: https://tomesphere.com/paper/PMC12922979/full.md

## References

47 references — full list in the complete paper: https://tomesphere.com/paper/PMC12922979/full.md

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Source: https://tomesphere.com/paper/PMC12922979