Aggressive behaviour in an acute general adult psychiatric unit

Prevalence and correlates of aggressive behavior in psychiatric inpatient populations

Aggressive behavior in patients with psychiatric disorders is attracting increasing research interest. One reason for this is that psychiatric patients are generally considered more likely to be aggressive, which raises a related question of whether diagnoses of psychiatric disorders predict the prevalence of aggressive behavior. Predicting aggression in psychiatric wards is crucial, because aggressive behavior not only endangers the safety of both patients and staff, but it also extends the hospitalization times. Predictions of aggressive behavior also need careful attention to ensure effective treatment planning. This literature review explores the relationship between aggressive behavior and psychiatric disorders and syndromes (dementia, psychoactive substance use, acute psychotic disorder, schizophrenia, bipolar affective disorder, major depressive disorder, obsessive-compulsive disorder, personality disorders and intellectual disability). The prevalence of aggressive behavior and its underlying risk factors, such as sex, age, comorbid psychiatric disorders, socioeconomic status, and history of aggressive behavior are discussed as these are the components that mostly contribute to the increased risk of aggressive behavior. Measurement tools commonly used to predict and detect aggressive behavior and to differentiate between different forms of aggressive behavior in both research and clinical practice are also reviewed. Successful aggression prevention programs can be developed based on the current findings of the correlates of aggressive behavior in psychiatric patients.

Aggression on the psychiatric ward: Prevalence and risk factors. A systematic review of the literature

INTRODUCTION

On psychiatric wards, aggressive behaviour displayed by patients is common and problematic. Understanding factors associated with the development of aggression offers possibilities for prevention and targeted interventions. This review discusses factors that contribute to the development of aggression on psychiatric wards.

METHOD

In Pubmed and Embase, a search was performed aimed at: prevalence data, ward characteristics, patient and staff factors that are associated with aggressive behaviour and from this search 146 studies were included.

RESULTS

The prevalence of aggressive behaviour on psychiatric wards varied (8-76%). Explanatory factors of aggressive behaviour were subdivided into patient, staff and ward factors. Patient risk factors were diagnosis of psychotic disorder or bipolar disorder, substance abuse, a history of aggression, younger age. Staff risk factors included male gender, unqualified or temporary staff, job strain, dissatisfaction with the job or management, burn-out and quality of the interaction between patients and staff. Staff protective factors were a good functioning team, good leadership and being involved in treatment decisions. Significant ward risk factors were a higher bed occupancy, busy places on the ward, walking rounds, an unsafe environment, a restrictive environment, lack of structure in the day, smoking and lack of privacy.

CONCLUSION

Despite a lack of prospective quantitative data, results did show that aggression arises from a combination of patient factors, staff factors and ward factors. Patient factors were studied most often, however, besides treatment, offering the least possibilities in prevention of aggression development. Future studies should focus more on the earlier stages of aggression such as agitation and on factors that are better suited for preventing aggression such as ward and staff factors. Management and clinicians could adapt staffing and ward in line with these results.

Aggressive incidents on a psychiatric intensive care unit

Aims and Method

This study looked at patient aggressive behaviour on an Irish psychiatric intensive care unit, and whether it was related to diagnosis, patient's insight and symptomatology. Each aggressive incident was recorded throughout the patient's stay using the Staff-Observed Aggression Scale.

Results

Ninety-nine individuals were admitted to the unit during the study. We recorded 82 aggressive incidents, with most occurring during the daytime and on weekdays. There was no statistical difference in BPRS scores between the aggressive and non-aggressive groups. the aggressive patient group had a lower insight score than the non-aggressive group (P < 0.05) as measured on the Schedule of the Assessment of Insight. However, when gender and verbal aggression only were included in the analysis, the difference in insight was less significant (P=0.07).

Clinical Implications

Aggression is common on a psychiatric intensive care unit. Low levels of insight in patients may increase the risk of aggression.

Characteristics of Patients Involved in Physical Assault in an Acute Inpatient Psychiatric Setting

BACKGROUND

Although aggressive behavior in psychiatric settings is a major concern, very few studies have focused exclusively on physical assault in a general inpatient psychiatric population.

OBJECTIVES

This study had 3 main goals: (1) to evaluate the prevalence of assaultive behavior in an acute psychiatric hospital; (2) to identify the clinical and socio-demographic factors associated with assaultive behavior during hospitalization; and (3) to explore whether a diagnosis of schizophrenia spectrum disorder increases the risk of assaultive behavior.

METHODS

We conducted a retrospective chart review of patients admitted to acute units in a psychiatric hospital between 2009 and 2012. A subset of occurrence reports identified by a multidisciplinary team as "physical assault" was included in the analysis. Using logistic multivariate regression analysis, these patients were compared with a randomly selected nonassaultive control group, matched for length of stay to identify factors associated with assaultive behavior.

RESULTS

Of 757 occurrence reports, 613 met criteria for significant assault committed by 356 patients over 309,552 patient days. The assault incident density was 1.98 per 1000 patient days. In the logistic regression model of best fit, the factors significantly associated with assaultive behavior were age, legal status, and substance use. A diagnosis of schizophrenia spectrum disorder was not significantly associated with assaultive behavior.

CONCLUSIONS

Clinicians should take extra precautions for involuntarily admitted young patients with a history of substance use, as they are more likely to exhibit assaultive behavior. A diagnosis of schizophrenia spectrum disorder in itself is not significantly associated with assaultive behavior. Screening instruments such as the Dynamic Appraisal of Situational Aggression may be useful in assessing risk of assault.

Workplace Violence and Training Required by New Legislation Among NJ Nurses

OBJECTIVE

The aim of this study was to examine nurses' knowledge of the state of New Jersey (NJ) Violence Prevention in Health Care Facilities Act, workplace violence training, and experience with workplace violence.

METHODS

In 2013, 309 (22.5% response rate) nurses returned a mailed survey. Univariate and multivariate analyses were conducted.

RESULTS

Ninety percent of respondents were female. When the perpetrator was a patient or a family member, the respondents experienced verbal abuse the most (57.8%), followed by threats (52.3%), and physical assault (38.3%). Respondents who had heard of the regulation (89.6%) received a higher proportion of training than those who had not heard of the regulation (57.9%) (P < 0.0001).

CONCLUSIONS

Nurses who received at least 80% of the required training components were more likely to feel more secure at work, suggesting that training is an important tool to address workplace violence.

Violence and self-harm in severe mental illness: inpatient study of associations with ethnicity, cannabis and alcohol

OBJECTIVE

We examined the extent to which ethnicity, cannabis and alcohol use could predict prevalence of violence and self-harm in an inpatient psychiatric sample.

METHOD

We collected demographic and clinical data in a series of 141 adult psychiatric inpatients in Hamilton, New Zealand. The Alcohol Use Disorders Identification Test (AUDIT) and Cannabis Use Disorders Identification Test, Revised (CUDIT-R) were used to measure substance use. Clinical assessment and file review were used to verify histories of self-harm and violence.

RESULTS

It was found that 66% had a history of violence, 54% of self-harm, and 40% of both; only 20% had neither. Cannabis use was found to significantly predict lifetime history of violence ( p = 0.02); other independent variables (gender, age, ethnicity, alcohol use, psychiatric diagnosis) did not. Self-harm was strikingly predicted by female gender ( p < 0.001), as well as by measures both of cannabis ( p = 0.025) and alcohol use ( p = 0.036); age, ethnicity and diagnosis did not reach significance. Less than 10% of patients were engaged with drug or alcohol services.

CONCLUSIONS

Cannabis use is a significant predictor of lifetime violence among the severely mentally ill, while both alcohol and cannabis use predict self-harm. Few affected patients receive specific treatment for substance use comorbidity.

Inpatient Violence

Inpatient violence constitutes a major concern for staff, patients, and administrators. Violence can cause physical injury and psychological trauma. Although violence presents a challenge to inpatient clinicians, it should not be viewed as inevitable. By looking at history of violence, in addition to clinical and other historical factors, clinicians can identify which patients present the most risk of exhibiting violent behavior and whether the violence would most likely flow from psychosis, impulsivity, or predatory characteristics. With that information, clinicians can provide environmental and treatment modifications to lessen the likelihood of violence.

Prevalence of aggression in hospitalized patients with schizophrenia in China: A meta-analysis

INTRODUCTION

Aggression is a major concern in psychiatric inpatient care. Variations in study designs, settings, populations and data collection methods render comparisons of the prevalence of aggressive behavior in high-risk settings difficult. We proposed to estimate the pooled prevalence of aggression among inpatients with schizophrenia in China.

METHODS

Reports on aggressive behaviour involving physical contact or risks of interpersonal violence, in schizophrenia in Chinese general psychiatric wards were retrieved by using computer-assisted searches and manual searches of the reference lists of the relevant literature. Statistical analyses were conducted using the Comprehensive Meta-Analysis V2 software. Potential sources of heterogeneity were analyzed with Cochrane's Q analysis.

RESULTS

The search yielded 19 eligible studies involving a total of 3,941 schizophrenia patients. The prevalence of aggressive behavior in psychiatric wards ranged between 15.3% and 53.2%. The pooled prevalence of aggression was 35.4% (95% CI: 29.7%, 41.4%). The most commonly reported significant risk factors for aggression were positive psychotic symptoms: hostility or suspiciousness, 78.9% (15 studies); delusions, 63.2% (12 studies); disorganized behavior, 26.3% (5 studies); and auditory hallucinations, 10.5% (2 studies); together with: past history of aggression, 42.1% (8 studies); and involuntary admission, 10.5% (2 studies).

CONCLUSIONS

Aggressive behaviour is common in Chinese inpatients with schizophrenia. The prevalence figures indicate the need to identify reliable clinical and illness predictors for aggression in inpatient psychiatric wards and to test investigations aimed at reducing aggressive episodes and their adverse outcomes.

Rapid tranquillisation of acutely disturbed and violent patients: a retrospective cohort examination of 24 patients on a psychiatric intensive care unit

The prevalence of violent behaviour within acute psychiatric services is about 10%.

Aim

To identify the pharmacological management of acutely disturbed behaviour in patients requiring rapid tranquillisation (RT) on a psychiatric intensive care unit (PICU). Socio-demographic and clinical characteristics were also identified in these patients.

Method and objectives

A retrospective cohort examination was carried out of 24 patients receiving RT, average age of 38.8 years (7 women and 17 men), admitted to the PICU between 1 January 2011 and 31 December 2011. Patient records and hospital incident reporting system were used to obtain relevant data for analysis.

Results

The majority of patients were detained (95%); suffering from schizophrenia (45.8%); bipolar disorder (25%) and substance misuse disorders (12.5%). Verbal aggression (58.3%) and threatening behaviour (29.2%) were the most common factors leading to RT. Fourteen patients (58.3%) were medicated with a combination of haloperidol and lorazepam; nine (37.5%) with zuclopenthixol acetate only; and one (4.2%) with a combination of zuclopenthixol and promethazine.

Conclusion

Haloperidol in combination with lorazepam was the most common medication utilised for RT. Nevertheless, zuclopenthixol acetate alone, or combined with other drugs, was used in over 40% of cases. This finding is in considerable variation with recommended guidelines.

Characteristics of international assaultive psychiatric patients: review of published findings, 2000-2012

In international reviews of psychiatric inpatient violence, one study of all types of patient violence found hostility, involuntary admission, and longer hospital stays associated with violence. A second study of comparison-group papers of patient assaults found younger males with schizophrenia, past violence, and substance abuse assaultive. The present review of raw assault data studies assessed characteristics of assaultive patients worldwide. It was hypothesized that patients with schizophrenia would present greatest assault risk. There were three analyses: International/no American studies (reviewed earlier), European studies, and merged International/American studies. Results revealed that male and female patients with schizophrenia, affective disorders, personality disorders, and other diagnoses presented greatest worldwide risk. Results partially support earlier findings. Given that individual institutional studies in this review reported significant assailant characteristics, a second finding is the absence of most of these institutional characteristics in this international review. Possible explanations for findings and a detailed methodological review are presented.

Identification of the "minimal triangle" and other common event-to-event transitions in conflict and containment incidents

Although individual conflict and containment events among acute psychiatric inpatients have been studied in some detail, the relationship of these events to each other has not. In particular, little is known about the temporal order of events for individual patients. This study aimed to identify the most common pathways from event to event. A sample of 522 patients was recruited from 84 acute psychiatric wards in 31 hospital locations in London and the surrounding areas during 2009-2010. Data on the order of conflict and containment events were collected for the first two weeks of admission from patients' case notes. Event-to-event transitions were tabulated and depicted diagrammatically. Event types were tested for their most common temporal placing in sequences of events. Most conflict and containment occurs within and between events of the minimal triangle (verbal aggression, de-escalation, and PRN medication), and the majority of these event sequences conclude in no further events; a minority transition to other, more severe, events. Verbal abuse and medication refusal were more likely to start sequences of disturbed behaviour. Training in the prevention and management of violence needs to acknowledge that a gradual escalation of patient behaviour does not always occur. Verbal aggression is a critical initiator of conflict events, and requires more detailed and sustained research on optimal management and prevention strategies. Similar research is required into medication refusal by inpatients.

Shift climate profiles and correlates in acute psychiatric inpatient units

PURPOSE

Inpatient psychiatric units are dynamic in nature, potentially creating a different treatment experience for each person, which may be difficult to quantify. Among the goals of this multi-centre service evaluation project was an assessment of shift-to-shift changes in unit-level events and their impact on the social-emotional environment.

METHODS

Over 1 year, various nurse-completed logs were used within the 11 participating Australian psychiatric units (n = 5,546 admissions) to record patient- and unit-level events per shift, including ratings of the overall social-emotional climate using a novel shift climate ratings (SCR) scale (n = 8,176 shifts). These were combined with admission-level patient characteristics to investigate shift climate profiles and correlates.

RESULTS

Occupancy rates averaged 88% and two-thirds of admissions were involuntary. The psychometric performance of the SCR scale was considered to be satisfactory (e.g., high internal consistency, unidimensional factor structure, and evidence of discriminant and predictive validity). A series of hierarchical regressions revealed considerable variation in SCR total scores, with poorer climates being significantly associated with: day/afternoon shifts; higher occupancy levels; higher proportions of experienced staff, and male, older, or involuntary patients; higher rates of less serious aggressive incidents; reporting of additional staffing demands; and unit location in a stand-alone psychiatric hospital.

CONCLUSIONS

The day-to-day social-emotional climate can have important consequences for patient engagement and recovery. Improved understanding of the role played by unit, staff and patient characteristics, together with routine monitoring, should facilitate the development and evaluation of targeted interventions to reduce adverse incidents and improve the overall social-emotional climate.

Understanding inpatient violence in a New Zealand child and adolescent psychiatric setting

This paper describes the rate of violent episodes at a youth psychiatric unit, identifies significant clinical and demographic differences between service users who had admissions with violent episodes and those who did not, and describes characteristics of violent incidents, including antecedents, consequences, victim type, and severity of violence. A retrospective file audit over a 2-year period reviewed 303 admissions. Characteristics of violent incidents (n = 242) and service users (violent/non-violent) were recorded. Of 263 service users, 21.7% exhibited violent behaviour. Significant differences between admissions with and without violent episodes were found in terms of ethnicity, legal status, length of admission, and diagnosis. Staff were the most frequent victims and less severe incidents were most common. The most frequent antecedents to violence were positive symptoms of psychosis, hostility, and agitation, while the most common consequences were seclusion, physical restraint and 'as-required' medication. This study has identified that violent incidents are a common and significant issue. The findings might help staff in reviewing current management approaches. Future areas of study have been identified.

Aggression in psychiatry wards: a systematic review

Although fairly frequent in psychiatric in-patient, episodes of aggression/violence are mainly limited to verbal aggression, but the level of general health is significantly lower in nurses who report 'frequent' exposure to violent incidents, and there is disagreement between patients and staff concerning predictors of these episodes. We searched the Pubmed, Embase and PsychInfo databases for English, Italian, French or German language papers published between 1 January 1990 and 31 March 2010 using the key words "aggress*" (aggression or aggressive) "violen*" (violence or violent) and "in-patient" or "psychiatric wards", and the inclusion criterion of an adult population (excluding all studies of selected samples such as a specific psychiatric diagnosis other than psychosis, adolescents or the elderly, men/women only, personality disorders and mental retardation). The variables that were most frequently associated with aggression or violence in the 66 identified studies of unselected psychiatric populations were the existence of previous episodes, the presence of impulsiveness/hostility, a longer period of hospitalisation, non-voluntary admission, and aggressor and victim of the same gender; weaker evidence indicated alcohol/drug misuse, a diagnosis of psychosis, a younger age and the risk of suicide. Alcohol/drug misuse, hostility, paranoid thoughts and acute psychosis were the factors most frequently involved in 12 studies of psychotic patients. Harmony among staff (a good working climate) seems to be more useful in preventing aggression than some of the other strategies used in psychiatric wards, such as the presence of male nurses.

An evaluation of nurses' interpersonal styles and their experiences of violence

Nursing is a demanding and stressful occupation. Nursing staff is required and expected to develop an interpersonal style that conveys concern for mentally ill patients. This study is aimed at investigating whether staff attitudes and behaviours are related to assaults on nurses in psychiatric settings. One hundred, sixty-two nurses working in psychiatric hospitals participated in this descriptive and analytical study. The data were gathered with an Interview Form and The Interpersonal Style Inventory. The statistical analysis shows that nurses who are less social and less tolerant are more exposed to physical assaults from patients, however nurses who are more help-seeking are more exposed to verbal assaults and have a concern of being assaulted. The findings of this research suggest that nurses' interpersonal styles may contribute to aggressive behaviours of patients/relatives.

Patient and staff perspectives on the use of seclusion

OBJECTIVES

This paper investigates the perceptions and experience of patients and staff on the use of seclusion in psychiatric services.

METHOD

A purpose designed questionnaire was distributed to staff and patients in a general adult mental health service.

RESULTS

Staff and patients both attributed more negative than positive feelings to patients' experience of seclusion.

CONCLUSIONS

Monitoring and evaluation of the use of seclusion may be insufficient to prevent or ameliorate its emotional impact. More comfortable alternatives to seclusion need to be utilized whenever possible.

Reflections on masculinity, culture and the diagnosis of depression

OBJECTIVE

To inform the debate on the relationship between gender and depression by examining clinicians' ratings on selected HoNos items in two cultural groups.

METHOD

Scores on items 1 (overactivity/aggression) and 2 (depression) as recorded by clinicians in the CAOS study of more than 12,000 unselected New Zealand psychiatric service users were analysed by gender and self identified ethnicity.

RESULTS

The lowest ratings for depression and highest for overactivity/agression were assigned to Māori males. Female Māori, were rated next, followed by male non-Māori. Female non-Māori were rated highest on depression and lowest on overactivity/agression.

CONCLUSIONS

Amongst the hypotheses to explain these findings are those relating to service utilization, rater bias, criteria bias, and cultural pathoplastic effects. These questions need answers.