Crowding and violent behavior: the influence of patient density on violent and self-harming behaviour at a medium secure unit

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.

Modifiable factors affecting inpatient violence in an acute child and adolescent psychiatric unit: A 16-year retrospective study

Violent incidents in acute inpatient units for children and adolescents are a major and persistent problem. The demographic, clinical, and modifiable (environmental-organizational) risk factors that affect inpatient violence in an Acute Child and Adolescent Psychiatric Unit were investigated via a retrospective study. Data were collected from nursing and medical reports and the unit's census and included 100 days per year for 16 years. Incidents of violence and assault types were recorded, and variables such as the diagnostic category of assailants, total number of patients, and staffing factors during the incident were examined. Of the 2390 violent incidents recorded, 50% were attributed to cases of physical violence towards another patient, 17% to physical violence towards nursing staff, 19% to physical violence towards self and 14% to destruction of property. According to the final multivariable model, for each additional patient in the unit, the risk of a violent event increased by 9.51%; for each additional offender patient, the risk increased by 14.06%; the number of assistant nurses was associated with a 25.03% increased risk; and, after 2006, the risk increased by 68.99%. The most significant factor associated with a 59.98% decreased risk was the total number of nursing staff. All variables significantly and independently contributed to the model. Acute inpatient psychiatric units with a small number of hospitalized patients, adequate, well-trained and specialized nursing staff, and the hospitalization of different types of patients in separate wards or units are expected to facilitate a reduction in the frequency of violent incidents.

Overcrowding in psychiatric wards and physical assaults on staff: data-linked longitudinal study

BACKGROUND

Patient overcrowding and violent assaults by patients are two major problems in psychiatric healthcare. However, evidence of an association between overcrowding and aggressive behaviour among patients is mixed and limited to small-scale studies.

AIMS

This study examined the association between ward overcrowding and violent physical assaults in acute-care psychiatric in-patient hospital wards.

METHOD

Longitudinal study using ward-level monthly records of bed occupancy and staff reports of the timing of violent acts during a 5-month period in 90 in-patient wards in 13 acute psychiatric hospitals in Finland. In total 1098 employees (physicians, ward head nurses, registered nurses, licensed practical nurses) participated in the study. The outcome measure was staff reports of the timing of physical assaults on both themselves and ward property.

RESULTS

We found that 46% of hospital staff were working in overcrowded wards, as indicated by >10 percentage units of excess bed occupancy, whereas only 30% of hospital personnel were working in a ward with no excess occupancy. An excess bed occupancy rate of >10 percentage units at the time of an event was associated with violent assaults towards employees (odds ratio (OR) = 1.72, 95% CI 1.05-2.80; OR = 3.04, 95% CI 1.51-6.13 in adult wards) after adjustment for confounding factors. No association was found with assaults on ward property (OR = 1.06, 95% CI 0.75-1.50).

CONCLUSIONS

These findings suggest that patient overcrowding is highly prevalent in psychiatric hospitals and, importantly, may increase the risk of violence directed at staff.

Personal safety in the accident and emergency department

Violence and aggression continues to be a significant problem for staff practising in accident and emergency (A&E) areas. In recent years the number of articles examining factors related to violence and aggression in the A&E department have steadily increased, allowing for a more in-depth examination of data. This article considers the characteristics of individuals who assault A&E staff, introducing the reader to the "recreational fighter", an individual who enjoys and is attracted to violent confrontations. The article goes on to consider the role of gender, alcohol, age and social history in relation to the characteristics of individuals who assault nursing staff practising in A&E and offers a number of strategies for nursing staff to consider when attempting to minimize the risk of personal physical assault.

Crowding and violence on psychiatric wards: explanatory models

OBJECTIVE

Violence is widely prevalent on acute-care psychiatric wards, and crowding has been identified as a major risk factor. This paper explores why patients may respond to crowding with violence.

METHOD

We carried out a literature review on Medline, using the key words "violence" and "crowding." We conducted an additional hand search of the references collected from the reviewed papers.

RESULTS

Factors specific to the relation between crowding on acute-care inpatient psychiatric wards and violence can be divided under the following headings: 1) patient density, privacy, and control; 2) ward architecture; 3) the social organization of psychiatric wards; 4) interpersonal space; 5) phylogenic theories; and 6) anthropological theories of human behaviour.

CONCLUSIONS

We offer explanatory models for this relation and suggest strategies to counter the effects of crowding. Recommendations are made for future studies.