14. ICU Diaries — Prevention of Post-Traumatic Stress

Quick Recap

Cross-cutting protocol — companion to Goals of Care & Palliative Care Integration and Post-Intensive Care Syndrome (PICS) & Long-Term Follow-Up protocols. Addresses the specific intervention of ICU diaries — a simple, low-cost, low-resource intervention with a genuinely more consistently positive evidence base than several of the more elaborate communication interventions addressed in the Goals of Care protocol, though with an important, underpowered gap specifically regarding family-authored diaries and family-member benefit.

1. Definition

ICU diary: a written (or increasingly, photograph-supplemented) narrative account of a patient's ICU stay, documenting daily events, the patient's condition, and context for gaps in the patient's own memory — traditionally authored by nursing staff, though family-authored variants have also been studied (Section 11). Given to the patient after ICU discharge (commonly at approximately one month post-discharge, per the foundational Jones et al. trial protocol), intended to help patients construct a coherent narrative of their critical illness experience, filling gaps left by sedation, delirium, or amnesia, and providing context for any frightening or delusional memories from the ICU stay.

Proposed mechanism: rather than a vague, unexplained gap in autobiographical memory (which can itself be a source of distress and disorientation), or unintegrated, potentially frightening delusional/hallucinatory memories from delirium (cross-reference Delirium Screening & Management protocol) left unexplained, the diary provides a coherent, factual narrative that can be assimilated into the patient's autobiographical memory through rereading over the months following discharge — theorized to reduce the ongoing distress associated with these memory gaps and unintegrated fragments.

2. Pathophysiology / Conceptual Framework

There is no organ-system pathophysiology here; the relevant conceptual framework concerns memory processing and psychological integration following trauma. ICU patients, particularly those who experienced delirium (cross-reference Delirium Screening & Management protocol), frequently have significant gaps in factual memory of their ICU stay alongside vivid, sometimes frightening delusional or hallucinatory memories — the combination of missing factual context and unintegrated frightening fragments is theorized to be a specific, identifiable contributor to post-ICU PTSD development, distinct from simply "having been critically ill" as a general traumatic experience. The diary's proposed mechanism directly targets this specific gap: providing the missing factual narrative that allows delusional memories to be recontextualized and integrated, rather than remaining as unexplained, free-floating traumatic fragments.

3. Immediate Stabilization (ABCDE) — Not Applicable

This protocol addresses a supportive, longitudinal intervention rather than acute stabilization; cross-reference Delirium Screening & Management and Goals of Care & Palliative Care Integration protocols for the acute-phase and communication frameworks this intervention complements.

Checklist — for implementing an ICU diary program:

4. Focused History — Not a Primary Component

Relevant history includes delirium occurrence/severity during the ICU stay (a specific risk factor for the memory gaps and delusional memories the diary specifically targets, cross-reference Delirium Screening & Management protocol) and prior psychiatric history relevant to PTSD risk stratification.

5–10. [Not Separately Applicable for This Focused, Supportive-Intervention Protocol]

Given this protocol's narrow, specific scope, the standard examination, syndrome-identification, differential-diagnosis, severity-scoring, and investigation sections are not separately applicable in the way they are for disease-specific protocols elsewhere in this library. Cross-reference Post-Intensive Care Syndrome (PICS) & Long-Term Follow-Up protocol for the broader psychological-domain screening and assessment framework this specific intervention sits within.

11. Evidence-Based Management — A More Consistently Positive Evidence Base Than Several Related Interventions

The Foundational, Positive Trial — Jones et al.

• Jones et al. RCT (n=352, randomized at 1 month post-ICU): patients received their ICU diary at approximately 1 month following critical care discharge, with final PTSD assessment at 3 months
• Result: new-onset PTSD significantly reduced in the diary group compared to control — 5% vs. 13%, p=0.02 — a clear, statistically significant, clinically meaningful reduction in new PTSD cases
• Trial authors' direct conclusion: "the provision of an ICU diary is effective in aiding psychological recovery and reducing the incidence of new PTSD"
• Mechanistic framing offered by the investigators: the diary may work by allowing patients "to change how they think about their experience of the ICU by providing a coherent narrative that can then be assimilated into autobiographical memory," through rereading over the months following discharge
• A specific, important nuance regarding how the benefit manifested: an earlier, related finding from the same broader research program noted a reduction in new-onset PTSD specifically when comparing diary vs. no-diary groups, but no significant difference when comparing mean PTSD symptom scores — suggesting the diary's benefit may be more about preventing new PTSD cases from developing at all, rather than reducing symptom severity across the board in patients who develop some degree of symptoms regardless — a genuinely useful distinction for understanding what kind of benefit to expect from this intervention

Nurse-Authored Diaries — Additional Supporting Evidence

• A dedicated RCT of a nurse-initiated diary intervention found the total mean PTSD score was significantly lower in the intervention group (p<0.0001), and patients in the intervention group more clearly recalled their ICU admission and stay (also p<0.0001) — reinforcing both the PTSD-reduction finding and the diary's proposed memory-integration mechanism directly, via improved recall clarity as a measurable outcome
• A smaller RCT (n=36) found the diary reduced anxiety and depression specifically, extending the demonstrated benefit beyond PTSD alone to a broader set of psychological outcomes

Family-Authored Diaries — A Genuinely Less Mature, More Mixed Evidence Base

• DRIP study (multicenter, block-randomized, blinded-data-entry RCT): tested the hypothesis that a diary written by a close relative (rather than nursing staff) would reduce PTSD symptoms in both patients and relatives at 3 months post-ICU
• A specific, important, acknowledged power limitation: the trial's own sensitivity analysis (doubling the number of relatives studied and assuming the same observed outcomes) found the confidence interval widened to 10.9–43.9%, "suggesting that the study could have been underpowered to show differences in actual PTSD cases in relatives" — a direct, honest acknowledgment from the investigators themselves that their trial may not have had adequate statistical power to detect a real effect, rather than providing confident evidence of no effect
• A separate pilot study specifically focused on family members (medical ICU patients' relatives): post-traumatic stress symptom scores trended downward over time in the intervention group, but no significant differences were detected in PTSD risk between intervention and control — again, a pilot-scale, likely underpowered result rather than a confident null finding, with the investigators' own conclusion specifically calling this "a simple gesture...requires further investigation" rather than declaring the approach ineffective
• FAID Fear pilot RCT (family-authored diaries specifically for cardiac arrest survivors' family members, n=16): a feasibility-focused pilot — found promising recruitment, retention, and acceptability metrics, with fear nonsignificantly lower in intervention participants — explicitly framed by its own authors as "a first step in building theory-based dyadic interventions," not a confirmatory efficacy trial

Practical Synthesis

ICU diaries, particularly nurse-authored diaries provided to patients at approximately 1 month post-discharge, represent one of the more consistently evidence-supported, low-cost, low-resource-intensity interventions for reducing new-onset PTSD in ICU survivors — a notably more consistently positive evidence base than several of the more elaborate, specialist-intensive communication interventions addressed in the Goals of Care & Palliative Care Integration protocol (where, notably, both a specialist-led family meeting intervention and a condolence letter intervention were found to potentially worsen psychological outcomes despite good intentions). The specific benefit appears concentrated in preventing new PTSD cases from developing, rather than necessarily reducing symptom severity across all patients uniformly — a useful distinction for setting realistic expectations about this intervention's likely effect. Family-authored diaries and family-member-focused benefit remain a genuinely less mature, underpowered evidence area — several dedicated trials in this specific application have found trends consistent with benefit but have explicitly, honestly acknowledged inadequate statistical power to confirm this, rather than providing confident negative evidence; this represents a promising but not yet confirmed extension of the more established nurse-authored, patient-focused diary evidence base.

12–20. [Organ Support / Therapy / Consultation / Monitoring / Bundle / Complications / Escalation / Discharge / Documentation — Addressed Collectively]

Given this protocol's focused scope, these sections are addressed collectively: ICU diaries have no organ-support or pharmacotherapy component; implementation is a nursing/unit-level program decision rather than an individual-patient prescriptive intervention. No significant complications or adverse effects have been identified in this literature — this is, distinctively among many interventions addressed in this library, a low-risk intervention where the primary practical consideration is program implementation and staff/family engagement rather than patient safety monitoring. Documentation consideration: diary initiation and provision to the patient (with timing) can be noted as part of standard PICS-prevention/ICU Liberation Bundle documentation (cross-reference Post-Intensive Care Syndrome protocol's discharge-planning checklist), though this is a low-stakes, low-medicolegal-risk documentation item relative to most other content in this library.

21. Key Guidelines

• ICU diaries are increasingly incorporated into comprehensive ICU Liberation/PICS-prevention frameworks (cross-reference Post-Intensive Care Syndrome (PICS) & Long-Term Follow-Up protocol) as a low-cost, evidence-supported supportive intervention, though not universally mandated by major critical care society guidelines with the same formal weight as core ABCDEF bundle elements

22. Landmark Trials

23. Controversies

• This protocol's evidence base stands in instructive contrast to the Goals of Care & Palliative Care Integration protocol's more cautionary findings on family/psychological interventions: while that protocol details two well-conducted RCTs (Carson et al.'s specialist-led family meetings, and Kentish-Barnes et al.'s condolence letters) where well-intentioned interventions were found to potentially worsen psychological outcomes, the core nurse-authored ICU diary literature shows a more consistently positive signal — worth holding both findings together as evidence that intervention design and delivery mechanism matter enormously in this domain, rather than assuming all well-intentioned psychological/communication interventions carry similar risk-benefit profiles; a simple, patient-controlled, retrospectively-reviewed narrative document appears to behave differently than a specialist-led, real-time, emotionally-loaded conversation or a formulaic bereavement gesture.
• The family-authored diary evidence gap deserves particular attention rather than being treated as equivalent to the more established nurse-authored evidence: multiple, independent trials specifically testing family-authored diaries have explicitly, honestly acknowledged inadequate statistical power rather than providing confident null results — this is a genuinely different evidentiary situation than a well-powered negative trial, and this protocol treats the family-authored variant as a promising, plausible, but not yet adequately tested extension of the core finding, rather than either endorsing it with the same confidence as nurse-authored diaries or dismissing it based on the underpowered null results available so far.
• The "new PTSD cases prevented" vs. "symptom severity reduced" distinction noted in Section 11 is a genuinely useful, underappreciated nuance for setting realistic clinical and patient expectations — the diary appears most clearly supported as a prevention tool for patients who might otherwise develop new PTSD, rather than as a treatment expected to substantially reduce symptoms in patients who develop some degree of psychological distress regardless of the intervention.

24. References

1. Jones C, Bäckman C, Capuzzo M, et al. Intensive care diaries reduce new onset post traumatic stress disorder following critical illness: a randomised, controlled trial. Crit Care. 2010;14(5):R168.
2. Nurse-initiated diary intervention on posttraumatic stress disorder and recall of memories in ICU survivors: a randomized controlled trial. [journal citation per source]. 2024.
3. Knowles RE, Tarrier N. Evaluation of the effect of prospective patient diaries on emotional well-being in intensive care unit survivors: a randomized controlled trial. Crit Care Med. 2009;37(1):184-191.
4. Nielsen AH, Angel S. How diaries written for critically ill influence the relatives: a systematic review of the literature. Nurs Crit Care. 2016.
5. The effect of family-authored diaries on posttraumatic stress disorder in intensive care unit patients and their relatives: a randomised controlled trial (DRIP-study). Aust Crit Care. 2019.
6. Use of diaries for family members of intensive care unit patients to reduce long-term PTSD: a pilot study. AACN Adv Crit Care. 2022.
7. Family-authored ICU diaries to reduce fear in patients experiencing a cardiac arrest (FAID Fear): a pilot randomized controlled trial. 2023.
8. The Washington Manual of Critical Care, 4th ed. 2025 — comprehensive ICU care and family engagement content.
9. ICU Protocols: A Step-wise Approach, 2nd ed. — relevant comprehensive ICU care content.