Risk assessment and subsequent nursing interventions in a forensic mental health inpatient setting: Associations and impact on aggressive behaviour

Aim and objectives

To examine associations between risk of aggression and nursing interventions designed to prevent aggression.

Background

There is scarce empirical research exploring the nature and effectiveness of interventions designed to prevent inpatient aggression. Some strategies may be effective when patients are escalating, whereas others may be effective when aggression is imminent. Research examining level of risk for aggression and selection and effectiveness of interventions and impact on aggression is necessary.

Design

Archival case file.

Methods

Data from clinical files of 30 male and 30 female patients across three forensic acute units for the first 60 days of hospitalisation were collected. Risk for imminent aggression as measured by the Dynamic Appraisal of Situational Aggression, documented nursing interventions following each assessment, and acts of aggression within the 24‐hours following assessment were collected. Generalised estimating equations were used to investigate whether intervention strategies were associated with reduction in aggression.

Results

When a Dynamic Appraisal of Situational Aggression assessment was completed, nurses intervened more frequently compared to days when no Dynamic Appraisal of Situational Aggression assessment was completed. Higher Dynamic Appraisal of Situational Aggression assessments were associated with a greater number of interventions. The percentage of interventions selected for males differed from females; males received more pro re nata medication and observation, and females received more limit setting, one‐to‐one nursing and reassurance. Pro re nata medication was the most commonly documented intervention (35.9%) in this study. Pro re nata medication, limit setting and reassurance were associated with an increased likelihood of aggression in some risk bands.

Conclusions

Structured risk assessment prompts intervention, and higher risk ratings result in more interventions. Patient gender influences the type of interventions. Some interventions are associated with increased aggression, although this depends upon gender and risk level.

Relevance to clinical practice

When structured risk assessments are used, there is greater likelihood of intervention. Intervention should occur early using least restrictive interventions.

     

The effectiveness of two interventions in the management of patient violence in acute mental inpatient settings: report on a pilot study

Systematic risk assessment and training courses have been suggested as interventions to deal with patient violence in psychiatric institutions. A dual centre prospective feasibility study was conducted on two Swiss psychiatric admission wards to test the hypothesis that such interventions will reduce the frequency and severity of violent events and coercion. A systematic aggression risk assessment, in combination with a standardized training course in aggression management was administered and the frequency and severity of aggressive incidents and the frequency of coercive measures were registered. The incidence rates of aggressive incidents and attacks showed no significant reduction from the baseline through risk prediction and staff training, but the drop in coercive measures was highly significant. A 'ward effect' was detected with one ward showing a decline in attacks with unchanged incidence rates of coercion and the other ward showing the opposite. The severity of the incidents remained unchanged whilst the subjective severity declined after the training course. We conclude that a systematic risk assessment and a training course may assist in reducing the incidence rate of coercive measures on psychiatric acute admission wards. Further testing of the interventions is necessary to measure the effect of the training alone and to counteract 'ward effects'.     

The effect of a training course on mental health nurses' attitudes on the reasons of patient aggression and its management

Aggression in healthcare systems poses a major problem for nurses because they are the most susceptible to suffer violence. Studies demonstrate that attitudes of nurses influence their behaviour regarding aggression and violence. Training programmes can positively change nurses' attitudes. This quasi-experimental study aimed to examine the effects of a systematic training course in aggression management on mental health nurses' attitudes about the reasons for patients' aggression and on its management. Sixty-three nurses (29 in the intervention and 34 in the control group) participated in this quasi-experimental pre-test and post-test study. The attitude of the participants of a training course was recorded by the German version of the Management of Aggression and Violence Attitude Scale (MAVAS). No significant attitude changes occurred in the intervention group at post-test. It is concluded that trainings intending to influence attitudes regarding the reason for patient aggression should consider the impact of the pedagogical quality of the training course, organizational support, and the user's perception. Moreover, it remains questionable to what extent a single instrument of measurement can record attitude changes.     

Prevalence and predictors of verbal aggression in a secure mental health service: Use of the HCR‐20

Despite evidence about the negative effects of verbal aggression in mental health wards there is little research about its prevalence or about the factors that predict the behaviour among inpatients. This study aimed to determine the prevalence of verbal aggression in a secure mental health service, and to examine the relationship of verbal aggression with risk factors for aggression in the risk assessment tool HCR‐20 in order to establish whether, and with which factors, the behaviour can be predicted. Verbal aggression was measured using the Overt Aggression Scale (OAS) over a 3‐month period across a heterogeneous patient group (n = 613). Over half the patients (n = 341, 56%) engaged in 1594 incidents of verbal aggression. The HCR‐20 total, clinical, and risk management subscale scores predicted verbal aggression, though effect sizes were not large. Item‐outcome analysis revealed that impulsivity, negative attitudes, and non‐compliance with medication were the best predictors of verbal aggression and, therefore, should be targeted for intervention. There are key synergies between factors predicting verbal aggression and the core mental health nursing role. Nurses, therefore, are in a prime position to develop and implement interventions that may reduce verbal aggression in mental health inpatients.     

Risk assessment and management: a community forensic mental health practice model

In Victoria, the Crimes (Mental Impairment and Unfitness to be Tried) Act (1997) reformed legal practice in relation to the detention, management and release of persons found by a court to be not guilty on the grounds of insanity or unfit to be tried. This Act provides a legal structure for such 'forensic patients' to move from secure inpatient facilities into the community. This new legislative landscape has generated challenges for all stakeholders and has provided the impetus for the development of a risk assessment and management model. The key components of the model are the risk profile, assessment and management plan. The discussion comprises theory, legislation, practice implications and limitations of the model. Practice implications concern the provision of objective tools, which identify risk and document strategic interventions to support clinical management. Some of the practice limitations include the model's applicability to risk assessment and management and its dependence on a mercurial multi-service interface in after-hours crisis situations. In addition to this, the paper articulates human limitations implicit in the therapeutic relationship that necessarily underpins the model. The paper concludes with an exploration of the importance of evaluative processes as well as the need for formal support and education for clinicians.     

The role of interpersonal style in aggression and its containment in a forensic mental health setting: A correlational and pseudoprospective study of patients and nursing staff

Inpatient aggression on mental health wards is common and staff–patient interactions are frequently reported antecedents to aggression. However, relatively little is known about the precise relationship between aggression and these interactions, or their relationships with aggression and staff containment responses such as restraint and seclusion. This study aimed to determine the roles of anger and interpersonal style among mental health nurses and between nurses and patients in the occurrence of aggression and its containment. A correlational, pseudoprospective study design was employed. n = 85 inpatients and n = 65 nurses were recruited from adult, low‐ and medium‐secure wards of a secure forensic mental health service. Participants completed validated self‐report anger and transactional interpersonal style measures. Inpatient aggression and containment incident data for a 3‐month follow‐up period were extracted from clinical records. Dyadic nurse–patient relationships were anticomplementary. Patients' self‐reported anger and staff‐rated hostile interpersonal style were significantly positively correlated; staff self‐reported anger and patient‐rated dominant interpersonal style were also positively correlated. Patient anger predicted aggression and their interpersonal style predicted being subject to containment in the form of restraint and seclusion. There were no statistically significant differences identified on measures between staff who were and were not involved in containment. More targeted intervention for patients' anger may have a positive impact on interpersonal style and lead to the reduction of incidents. Staff education and skills training programmes should emphasize the importance of interpersonal styles which could help to promote and enhance positive interactions.     

An evaluation of staff and patient views of and strategies employed to manage inpatient aggression and violence on one mental health unit: a pluralistic design

Following an initial springboard study, a further more extensive piece of research was conducted to identify and evaluate approaches used to manage patient aggression and violence on three acute mental health wards. Data were gathered using an incident form, a questionnaire and interviews. The views of patients (n = 80), nurses (n = 72) and medical staff (n = 10) were explored. Findings revealed a clear distinction between the way staff and patients view both the problem and the response. Patients' view present staff approaches as 'controlling' and believe that environmental and poor communication factors underpin aggressive behaviour. Staff, conversely, attribute aggressive behaviour to internal patient and external factors, which may explain the reason for approaches used. A strong correlation was found between type of patient aggression and response (r = 0.36, P < 0.000) and a high percentage of incidents reported were of an aggressive, as opposed to violent, nature. For example 70% of incidents involved verbal abuse or threat. Despite this, 47% (n = 103) of approaches incorporated the use of medication, restraint or seclusion. These are commonly referred to as traditional methods. Patients clearly view this controlling style as a part of the problem and an emphasis upon control and symptom reduction may be inappropriate given the type of aggression encountered. Key issues were further analysed using an internal, external and situational model, each of which endeavour to explain reasons for patient aggression from different perspectives. It is this emphasis upon sole perspectives that may both contribute to and result in the use of a limited number of management approaches adopted in practice. The integration of all three models to examine the complex nature of patient aggression and violence from a variety of perspectives may be the way forward. As a result, approaches to deal with this problem could be more meaningful and subsequently effective.     

Predicting aggressive behaviour in acute forensic mental health units: A re‐examination of the dynamic appraisal of situational aggression's predictive validity

In the present study, we explored the predictive validity of the Dynamic Appraisal of Situational Aggression (DASA) assessment tool in male (n = 30) and female (n = 30) patients admitted to the acute units of a forensic mental health hospital. We also tested the psychometric properties of the original DASA bands and novel risk bands. The first 60 days of each patient's file was reviewed to identify daily DASA scores and subsequent risk‐related nursing interventions and aggressive behaviour within the following 24 hours. Risk assessments, followed by documented nursing interventions, were removed to preserve the integrity of the risk‐assessment analysis. Receiver–operator characteristics were used to test the predictive accuracy of the DASA, and generalized estimating equations (GEE) were used to account for repeated risk assessments, which occurs when analysing short‐term risk‐assessment data. The results revealed modest predictive validity for males and females. GEE analyses suggested the need to adjust the DASA risk bands to the following (with associated odds ratios (OR) for aggressive behaviour): 0 = low risk; 1, 2, 3 = moderate‐risk OR, 4.70 (95% confidence interval (CI): 2.84–7.80); and 4, 5, 6, 7 = high‐risk OR, 16.13 (95% CI: 9.71–26.78). The adjusted DASA risk bands could assist nurses by prompting violence‐prevention interventions when the level of risk is elevated.     

The effect of a training course in aggression management on mental health nurses' perceptions of aggression: a cluster randomised controlled trial

Nurses' attitudes towards patient aggression may influence their behaviour towards patients. Thus, their enhanced capacity to cope with aggressive patients may nurture more positive attitudes and alleviate adverse feelings emanating from patient aggression. This cluster randomised controlled trial conducted on six psychiatric wards tested the hypotheses that a 5 day training course in aggression management would positively influence the following outcome measures: Nurses' perception and tolerance towards patient aggression and resultant adverse feelings. A repeated measures design was employed to monitor change. No effect was found. The short time frame between the training course and the follow up measurement or non-responsiveness of the measurement instruments may explain this finding.     

Promoting positive and safe care in forensic mental health inpatient settings: Evaluating critical factors that assist nurses to reduce the use of restrictive practices

Reducing and eliminating the use of restrictive practices, such as seclusion and restraint, is a national priority for Australia's mental health services. Whilst legislation, organization and practice changes have all contributed to a reduction in these practices, forensic mental health services continue to report high rates. This paper details the findings of research that examined the experiences of nurses working in the inpatient forensic mental health setting. The research aimed to (i) document the experiences of nurses working in the forensic mental health setting, (ii) articulate their perceived unique skill set to manage challenging patient behaviours, and (iii) determine how their experiences and skill set can inform practice changes to reduce the use of restrictive practices. Thirty‐two nurses were recruited from one Australian forensic mental health service. Data were collected using semi‐structured interviews and analysed using inductive content analysis. Four categories were identified that influenced practice experiences: (i) working in a challenging but interesting environment, (ii) specialty expertize, (iii) exposure to aggression and resilience as a protective factor, and (iv) the importance of effective teamwork and leadership. Forensic mental health care is complex, highly specialized, and often delivered in an unpredictable environment. Whilst high rates of restrictive practices may be linked to the unique characteristics of forensic patients, training, teamwork, and leadership are critical factors influencing their use in this setting. Nurses working in this area need to be educated and supported to work confidently and safely with this high‐risk patient cohort.     

Verbal and non-verbal behaviour immediately prior to aggression by mentally disordered people: enhancing the assessment of risk

In this study we seek to enhance the assessment of imminent violence risk by providing empirical data on the types of verbal and non-verbal behaviour exhibited by 31 psychiatric inpatients immediately prior to assaulting a staff member, and 31 non-aggressive controls. Verbal abuse, high overall activity level and standing uncomfortably close to the intended victim were the most common behaviours immediately prior to the assault, but most preassault behaviours were also exhibited when patients were not assaulting staff. In the 3 days prior to the assault, aggressive patients differed from non-aggressors in terms of verbal abuse, abnormal activity level ( P <0.05), threatening gestures and threatening stance ( P <0.01). Only one patient was aggressive in the absence of any predictive behaviours. We conclude that most patients exhibit easily identifiable signs of imminent aggression, but that many of these signs occur in the absence of aggression.     

Screening for risk of violence using service users’ self‐perceptions: A prospective study from an acute mental health unit

Service users’ self‐perception of risk has rarely been emphasized in violence risk assessments. A recent review pointed to the importance of a multidisciplinary approach, because different perspectives may provide a deeper and improved understanding of risk assessment. The aim of this study was to investigate service users’ perceptions of their own risk of committing violence, using a self‐report risk scale, to determine the feasibility and efficacy of this potential violence risk marker during acute mental health hospitalization. All service users admitted to a psychiatric emergency hospital in Norway during one calendar year were included (N = 512). Nearly 80% self‐reported no risk or low risk; only seven (1.4%) reported moderate risk or high risk. Service users who reported moderate risk, high risk, don't know, or won't answer were more likely to be violent (OR = 4.65, 95% CI = 2.79–7.74) compared with those who reported no risk or low risk. There was a significant gender interaction with higher OR for women on both univariate and multivariate analyses. Although the OR was higher for women, women's violence rate (11.0%) was almost half that of men (21.8%). For women, sensitivity and specificity were 0.55 and 0.88, respectively; corresponding values for men were 0.40 and 0.80. Inclusion of self‐perception of violence risk is the first step towards service users’ collaborative involvement in violence prediction; these results indicate that self‐perception can contribute to violence risk assessments in acute mental health settings. Findings also indicate that there are gender differences in these assessments.     

Association of methamphetamine use and restrictive interventions in an acute adult inpatient mental health unit: A retrospective cohort study

The aim of the present study was to describe incidences of restrictive interventions and the association of methamphetamine use at an acute adult inpatient mental health unit in metropolitan Melbourne, Victoria, Australia. A total of 232 consecutive consumer admissions to the inpatient unit across a 3‐month period were described for illicit substance use and the use of restrictive interventions (seclusion, mechanical restraint, and physical restraint) prior to and during admission. Of all admissions, 25 (10.8%) involved consumers subjected to a restrictive intervention. Methamphetamine use was either self‐reported or detected by saliva test for 71 (30.6%) consumers. Following multivariate analyses, methamphetamine use (odds ratio (OR): 7.83, 95% confidence interval (CI): 2.33–26.31) and restrictive intervention in the emergency department prior to admission (OR: 8.85, 95% CI: 2.83–27.70) were significant independent predictors of the use of restrictive interventions after inpatient admission. Anecdotal observations provided by clinical mental health staff that consumers intoxicated with methamphetamine appear to require restrictive intervention more frequently than other consumers was confirmed with the results of the current study. As the state of Victoria in Australia is on a pathway to the elimination of the use of restrictive interventions in mental health services, clinicians need to develop management strategies that provide specialist mental health care using the least‐restrictive interventions. Although 26.8% of methamphetamine users were secluded after admission, restrictive interventions should not be the default management strategy for consumers who present with self‐report or positive screen for methamphetamine use.     

Understanding the social context of violent and aggressive incidents on an inpatient unit

The English National Service Framework for Mental Health stipulates that the highest quality of health care should be provided for mental health service users. Incidents of aggression and violence militate against achieving that goal, yet such incidents are frequently reported in inpatient settings. Much research in this area reflects a dualistic, perpetrator/victim conceptualization of incidents. This study aimed to take a more systemic approach by treating violent and aggressive incidents as social interactions and by seeking to understand the social contexts in which they took place. In this paper we describe and discuss the main themes to emerge from 15 staff accounts of 11 incidents on one ward. A striking theme reflected throughout the interview data was the lack of staff engagement with clients, and particularly an inability to look at the world through clients' eyes in interpreting their behaviour. We conclude that the 'zero tolerance' campaigns currently being conducted in the UK in relation to aggression towards NHS staff are unlikely to succeed without attention to understanding why aggressive behaviour arises and identifying features of the caring environment that may contribute to it. Rather than adopting a position of 'zero tolerance', we argue that three steps are required following an aggressive incident: emotional support; critical reflection and learning; and the pursuit of accountability.     

Developing a non-aversive intervention strategy in the management of aggression and violence for people with learning disabilities using natural therapeutic holding

This paper builds upon a previous piece of research regarding the development of 'natural therapeutic holding' as a non-aversive alternative to control and restraint (C and R) in managing aggression and violence in people with learning disabilities. This paper represents aspects of an ongoing programme of research and explains the aims and values which underpin natural therapeutic holding by describing the theory, aims, values and practical application. The concepts of individual risk management and pro-active intervention strategies are discussed with illustrations of practical application given by means of a case study. The case study shows that over a relatively short period of time, an individual with severe learning disabilities who is aggressive and violent, learns alternative coping strategies to aggression and violence through the application of natural therapeutic holding. The article concludes that natural therapeutic holding is a very effective intervention strategy in the management of violence in people with learning disabilities from two perspectives: (a) it provides staff with safe, professional and ethical skills with which they can manage aggressive and violent clients and (b) as a therapy, natural therapeutic holding gives clients the opportunity to learn coping strategies which are more effective than violence.