Handoff Communication Failures and Their Contribution to Patient Safety Incidents

Introduction

Handoff communication, defined as the real-time transfer of patient information, professional responsibility, and accountability between caregivers during transitions of care, occurs with substantial frequency throughout a typical hospital admission. Shift changes, unit transfers, procedural transports, and temporary coverage arrangements each require the accurate and complete transmission of clinical information from one caregiver to another, and each represents a discrete opportunity for information to be omitted, distorted, or misunderstood. The Joint Commission has consistently identified communication failure as one of the most frequently cited contributing factors in reported sentinel events, with handoff-related communication breakdowns implicated in a substantial proportion of cases involving delayed treatment, medication error, and wrong-site or wrong-patient incidents (The Joint Commission, 2023).

Unlike many other contributors to patient safety incidents, handoff communication failure is frequently characterized not by the absence of information transfer, but by its incompleteness, ambiguity, or lack of structure. Verbal handoffs conducted without a standardized format have been shown to vary substantially in content, sequence, and emphasis depending on the individual communicating, resulting in inconsistent transmission of critical information such as pending diagnostic results, code status, or early warning signs of clinical deterioration (Starmer et al., 2019). This variability introduces the possibility that receiving clinicians form an incomplete or inaccurate mental model of the patient’s condition, a phenomenon that has been described in the human factors literature as a breakdown in shared situational awareness (Patterson & Wears, 2020).

Structured handoff frameworks, most notably SBAR (Situation-Background-Assessment-Recommendation) and its derivatives, have been developed and widely promoted as a means of standardizing the content and sequence of information exchanged during handoff, with the stated goal of reducing variability and ensuring that essential clinical information is reliably communicated regardless of which individuals are involved in the exchange. A number of studies have reported improvements in handoff completeness and receiving-clinician satisfaction following implementation of structured frameworks (Müller et al., 2018), and several have reported associated reductions in adverse events or near-miss incidents (Starmer et al., 2019). However, much of this evidence has been generated in physician-to-physician handoff contexts, particularly resident sign-out in academic medical centers, with comparatively less rigorous evidence available describing the effect of structured handoff implementation on nurse-to-nurse shift handoff, despite nursing handoff occurring with substantially greater frequency across the course of a hospital admission.

Given the frequency with which nursing handoff occurs and the plausible mechanistic link between information loss during handoff and downstream patient safety incidents, further evidence directly examining the relationship between handoff communication quality and incident occurrence, and evaluating the effect of structured handoff protocol implementation specifically within nursing practice, is warranted. The purpose of this study was to examine the association between handoff communication quality and the occurrence of patient safety incidents on adult inpatient nursing units, and to evaluate whether implementation of a standardized, SBAR-based handoff protocol was associated with a reduction in handoff-related incident rates.

Methods

This study employed a prospective, pre-post observational design conducted across five adult inpatient units, including medical-surgical, telemetry, and general surgical units, located within two acute care hospitals in the same regional health system. Data collection occurred over a continuous 10-month period, consisting of a 4-month baseline period during which units continued their existing, unstructured verbal handoff practice, followed by a 2-month implementation and training period, and a subsequent 4-month post-implementation period during which units used a standardized, SBAR-based structured handoff protocol supported by a printed and electronic handoff template.

Handoff encounters were directly observed by trained research assistants who were not members of unit nursing staff, using a validated handoff quality assessment tool adapted from prior handoff evaluation research. The tool scored each observed handoff across five domains: completeness of clinical status information, explicit statement of pending tasks and anticipated concerns, opportunity for the receiving nurse to ask questions, absence of interruption during the exchange, and overall organization and sequencing of information. A random sample of handoff encounters was observed on each participating unit during both the baseline and post-implementation periods, stratified to ensure representation across day and night shifts.

The structured handoff protocol implemented during the intervention period consisted of three core components:

1.A standardized SBAR-based verbal handoff script, requiring the outgoing nurse to address patient situation, relevant background, current clinical assessment, and specific recommendations or anticipated needs for the incoming shift, in a fixed sequence for every patient.

2.A printed and electronic handoff template embedded within the electronic health record, pre-populated with key clinical data fields including code status, allergy information, pending diagnostic results, and active safety concerns, to be reviewed jointly by outgoing and incoming nurses at the bedside.

3.A designated, interruption-protected handoff period at each shift change, during which non-urgent interruptions to the handoff process were actively discouraged through unit-level workflow adjustments and visual signage.

Patient safety incidents were identified through the hospitals’ electronic voluntary incident reporting system and supplemented by structured chart review, and were classified by a two-nurse review panel as handoff-related if the incident occurred within 24 hours of a nursing shift handoff and involved information that would plausibly have been communicated during that handoff, such as a missed pending laboratory result, an unaddressed change in clinical status, or an omitted safety precaution. The primary outcome was the rate of handoff-related patient safety incidents, expressed as incidents per 1,000 patient days. Multivariate Poisson regression was used to compare incident rates between the baseline and post-implementation periods, adjusting for unit type, shift, and patient acuity, with the natural logarithm of patient days included as an offset term. Handoff quality scores were compared between periods using independent-samples t-tests. Statistical significance was set at p < .05, and analyses were conducted using Stata version 18.

Results

A total of 612 handoff encounters were directly observed across the study period, 298 during the baseline period and 314 during the post-implementation period, with representation from all five participating units and both day and night shifts. Across the full 10-month study period, the participating units accounted for 41,120 patient days, during which 214 patient safety incidents were identified and reviewed for relationship to handoff communication.

The rate of handoff-related patient safety incidents was significantly lower following implementation of the structured handoff protocol. During the baseline period, handoff-related incidents occurred at a rate of 6.8 per 1,000 patient days, compared to 3.2 per 1,000 patient days during the post-implementation period. In the adjusted Poisson regression model, implementation of the structured handoff protocol was associated with a 53% reduction in handoff-related incident rate (incidence rate ratio = 0.47, 95% CI 0.34–0.65, p < .001), after adjusting for unit type, shift, and patient acuity.

Directly observed handoff quality scores improved significantly following protocol implementation, rising from a mean of 61.3 (SD = 12.1) during the baseline period to 75.9 (SD = 9.8) during the post-implementation period (t(610) = 15.84, p < .001). The largest gains were observed in completeness of clinical status information and explicit statement of pending tasks and anticipated concerns, domains directly targeted by the structured SBAR script and pre-populated handoff template. Interruption during the handoff exchange declined substantially, from 38% of observed baseline handoffs to 11% of post-implementation handoffs, coinciding with the designated interruption-protected handoff period introduced as part of the intervention. Analysis of incident type revealed that the largest reduction was observed in incidents related to missed or delayed follow-up on pending diagnostic results and unaddressed changes in clinical status, while incidents related to medication discrepancy showed a more modest, though still statistically significant, reduction.

Discussion

The findings of this study demonstrate a substantial and statistically significant reduction in handoff-related patient safety incidents following implementation of a standardized, SBAR-based handoff protocol, with the post-implementation incident rate less than half that observed during the unstructured baseline period. This finding extends prior handoff research, much of which has focused on physician sign-out in academic settings (Starmer et al., 2019; Müller et al., 2018), by demonstrating a comparable benefit within nursing shift handoff, a transition point that occurs with substantially greater frequency across the course of a hospital admission and therefore may carry a correspondingly larger cumulative safety impact.

The pattern of improvement observed across specific handoff quality domains offers insight into the likely mechanism underlying the reduction in incident rate. The largest gains in handoff quality were observed in completeness of clinical status information and explicit statement of anticipated concerns, and the largest reductions in incident rate were correspondingly observed in categories directly tied to these domains, namely missed follow-up on pending results and unaddressed changes in clinical status. This alignment suggests that the structured protocol’s benefit derived not from a general improvement in communication rapport, but from its specific success in ensuring that concrete, actionable clinical information was reliably transmitted and explicitly acknowledged by the receiving nurse, consistent with the theoretical basis for structured handoff frameworks as tools for standardizing content rather than merely encouraging communication (Patterson & Wears, 2020).

The marked reduction in handoff interruption observed following implementation of the designated interruption-protected handoff period is also noteworthy, given that interruption during high-stakes communication has been independently associated with information loss and error in prior human factors research (Westbrook et al., 2021). This finding suggests that the structural and environmental conditions surrounding a handoff, not merely its verbal content, meaningfully influence the reliability of information transfer, and that interventions addressing handoff communication should attend to workflow and environmental design in addition to standardizing verbal content.

This study has several limitations. The pre-post design, without a concurrent control group, limits the ability to fully exclude the influence of secular trends or concurrent quality initiatives on the observed reduction in incident rate, though no other major safety interventions were implemented on the participating units during the study period. Classification of incidents as handoff-related relied on retrospective panel review and, despite the use of a structured classification process, may be subject to some degree of reviewer judgment. The two-site setting may limit generalizability to hospitals with substantially different unit structures, staffing models, or existing handoff practices. Future research employing a stepped-wedge or cluster-randomized design across a larger number of sites would strengthen causal inference regarding the relationship between structured handoff implementation and patient safety incident reduction. Despite these limitations, the magnitude and consistency of the findings, together with the coherent relationship observed between specific handoff quality improvements and corresponding incident-category reductions, support the continued adoption of standardized, structured handoff communication protocols as a core patient safety practice within nursing shift transitions.

References

The Joint Commission. (2023). Sentinel event data: Root causes by event type. Joint Commission Sentinel Event Statistics.

Starmer, A. J., Spector, N. D., Srivastava, R., West, D. C., Rosenbluth, G., Allen, A. D., & Landrigan, C. P. (2019). Changes in medical errors after implementation of a handoff program. New England Journal of Medicine, 371(19), 1803–1812.

Patterson, E. S., & Wears, R. L. (2020). Patient handoffs: Standardized and reliable measurement tools remain elusive. Joint Commission Journal on Quality and Patient Safety, 36(2), 52–61.

Müller, M., Jürgens, J., Redaèlli, M., Klingberg, K., Hautz, W. E., & Stock, S. (2018). Impact of the communication and patient hand-off tool SBAR on patient safety: A systematic review. BMJ Open, 8(8), e022202.

Westbrook, J. I., Li, L., Hooper, T. D., Raban, M. Z., Middleton, S., & Lehnbom, E. C. (2021). Effectiveness of a ‘do not interrupt’ bundled intervention to reduce interruptions during medication administration. BMJ Quality & Safety, 30(4), 316–326.

Riesenberg, L. A., Leitzsch, J., & Cunningham, J. M. (2010). Nursing handoffs: A systematic review of the literature. American Journal of Nursing, 110(4), 24–34.

Abraham, J., Kannampallil, T., & Patel, V. L. (2014). A systematic review of the literature on the evaluation of handoff tools: Implications for research and practice. Journal of the American Medical Informatics Association, 21(1), 154–162.

Streeter, A. R., & Harrington, N. G. (2017). Nurse handoff communication: Assessment of a novel evidence-based protocol. MEDSURG Nursing, 26(4), 261–267.

Randell, R., Wilson, S., & Woodward, P. (2011). The importance of the verbal shift handover report: A multi-site case study. International Journal of Medical Informatics, 80(11), 803–812.

Staggers, N., & Blaz, J. W. (2013). Research on nursing handoffs for medical and surgical settings: An integrative review. Journal of Advanced Nursing, 69(2), 247–262.

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